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09aa5d3f69
query with VALUES() A table value constructor can be used in all contexts where a select can be used. In particular an ORDER BY clause or a LIMIT clause or both of them can be attached to a table value constructor to produce a new query. Unfortunately execution of such queries was not supported. This patch fixes the problem.
2507 lines
67 KiB
Plaintext
2507 lines
67 KiB
Plaintext
SET sql_mode=ORACLE;
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create table t1 (a int, b int);
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insert into t1 values (1,2),(4,6),(9,7),
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(1,1),(2,5),(7,8);
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# just VALUES
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values (1,2);
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1 2
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1 2
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values (1,2), (3,4), (5.6,0);
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1 2
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1.0 2
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3.0 4
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5.6 0
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values ('abc', 'def');
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abc def
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abc def
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# UNION that uses VALUES structure(s)
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select 1,2
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union
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values (1,2);
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1 2
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1 2
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values (1,2)
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union
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select 1,2;
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1 2
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1 2
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select 1,2
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union
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values (1,2),(3,4),(5,6),(7,8);
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1 2
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1 2
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3 4
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5 6
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7 8
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select 3,7
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union
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values (1,2),(3,4),(5,6);
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3 7
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3 7
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1 2
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3 4
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5 6
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select 3,7,4
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union
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values (1,2,5),(4,5,6);
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3 7 4
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3 7 4
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1 2 5
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4 5 6
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select 1,2
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union
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values (1,7),(3,6.5);
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1 2
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1 2.0
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1 7.0
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3 6.5
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select 1,2
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union
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values (1,2.0),(3,6);
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1 2
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1 2.0
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3 6.0
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select 1.8,2
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union
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values (1,2),(3,6);
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1.8 2
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1.8 2
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1.0 2
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3.0 6
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values (1,2.4),(3,6)
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union
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select 2.8,9;
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1 2.4
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1.0 2.4
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3.0 6.0
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2.8 9.0
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values (1,2),(3,4),(5,6),(7,8)
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union
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select 5,6;
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1 2
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1 2
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3 4
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5 6
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7 8
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select 'ab','cdf'
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union
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values ('al','zl'),('we','q');
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ab cdf
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ab cdf
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al zl
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we q
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values ('ab', 'cdf')
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union
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select 'ab','cdf';
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ab cdf
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ab cdf
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values (1,2)
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union
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values (1,2),(5,6);
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1 2
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1 2
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5 6
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values (1,2)
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union
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values (3,4),(5,6);
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1 2
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1 2
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3 4
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5 6
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values (1,2)
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union
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values (1,2)
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union values (4,5);
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1 2
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1 2
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4 5
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# UNION ALL that uses VALUES structure
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values (1,2),(3,4)
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union all
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select 5,6;
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1 2
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1 2
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3 4
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5 6
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values (1,2),(3,4)
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union all
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select 1,2;
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1 2
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1 2
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3 4
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1 2
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select 5,6
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union all
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values (1,2),(3,4);
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5 6
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5 6
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1 2
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3 4
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select 1,2
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union all
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values (1,2),(3,4);
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1 2
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1 2
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1 2
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3 4
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values (1,2)
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union all
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values (1,2),(5,6);
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1 2
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1 2
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1 2
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5 6
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values (1,2)
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union all
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values (3,4),(5,6);
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1 2
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1 2
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3 4
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5 6
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values (1,2)
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union all
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values (1,2)
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union all
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values (4,5);
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1 2
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1 2
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1 2
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4 5
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values (1,2)
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union all
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values (1,2)
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union values (1,2);
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1 2
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1 2
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values (1,2)
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union
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values (1,2)
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union all
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values (1,2);
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1 2
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1 2
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1 2
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# EXCEPT that uses VALUES structure(s)
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select 1,2
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except
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values (3,4),(5,6);
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1 2
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1 2
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select 1,2
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except
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values (1,2),(3,4);
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1 2
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values (1,2),(3,4)
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except
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select 5,6;
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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select 1,2;
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (5,6);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (1,2);
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1 2
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3 4
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# INTERSECT that uses VALUES structure(s)
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select 1,2
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intersect
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values (3,4),(5,6);
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1 2
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select 1,2
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intersect
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values (1,2),(3,4);
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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select 5,6;
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1 2
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values (1,2),(3,4)
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intersect
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select 1,2;
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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values (5,6);
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1 2
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values (1,2),(3,4)
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intersect
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values (1,2);
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1 2
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1 2
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# combination of different structures that uses VALUES structures : UNION + EXCEPT
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values (1,2),(3,4)
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except
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select 1,2
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union values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (1,2)
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union
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values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (1,2)
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union
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values (3,4);
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1 2
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3 4
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values (1,2),(3,4)
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union
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values (1,2)
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except
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values (1,2);
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1 2
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3 4
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# combination of different structures that uses VALUES structures : UNION ALL + EXCEPT
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values (1,2),(3,4)
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except
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select 1,2
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union all
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values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (1,2)
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union all
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values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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except
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values (1,2)
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union all
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values (3,4);
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1 2
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3 4
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3 4
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values (1,2),(3,4)
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union all
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values (1,2)
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except
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values (1,2);
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1 2
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3 4
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# combination of different structures that uses VALUES structures : UNION + INTERSECT
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values (1,2),(3,4)
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intersect
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select 1,2
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union
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values (1,2);
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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values (1,2)
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union
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values (1,2);
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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values (1,2)
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union
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values (3,4);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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union
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values (1,2)
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intersect
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values (1,2);
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1 2
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1 2
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# combination of different structures that uses VALUES structures : UNION ALL + INTERSECT
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values (1,2),(3,4)
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intersect
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select 1,2
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union all
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values (1,2);
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1 2
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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values (1,2)
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union all
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values (1,2);
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1 2
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1 2
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1 2
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values (1,2),(3,4)
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intersect
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values (1,2)
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union all
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values (3,4);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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union all
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values (1,2)
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intersect
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values (1,2);
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1 2
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1 2
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# combination of different structures that uses VALUES structures : UNION + UNION ALL
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values (1,2),(3,4)
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union all
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select 1,2
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union
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values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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union all
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values (1,2)
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union
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values (1,2);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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union all
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values (1,2)
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union
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values (3,4);
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1 2
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1 2
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3 4
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values (1,2),(3,4)
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union
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values (1,2)
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union all
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values (1,2);
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1 2
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1 2
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3 4
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1 2
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values (1,2)
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union
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values (1,2)
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union all
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values (1,2);
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1 2
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1 2
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1 2
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# CTE that uses VALUES structure(s) : non-recursive CTE
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with t2 as
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(
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values (1,2),(3,4)
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)
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select * from t2;
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1 2
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1 2
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3 4
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with t2 as
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(
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select 1,2
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union
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values (1,2)
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)
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select * from t2;
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1 2
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1 2
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with t2 as
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(
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select 1,2
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union
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values (1,2),(3,4)
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)
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select * from t2;
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1 2
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1 2
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3 4
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with t2 as
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(
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values (1,2)
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union
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select 1,2
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)
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select * from t2;
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1 2
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1 2
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with t2 as
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(
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values (1,2),(3,4)
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union
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select 1,2
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)
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select * from t2;
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1 2
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1 2
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3 4
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with t2 as
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(
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values (5,6)
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union
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values (1,2),(3,4)
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)
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select * from t2;
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5 6
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5 6
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1 2
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3 4
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with t2 as
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(
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values (1,2)
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union
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values (1,2),(3,4)
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)
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select * from t2;
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1 2
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1 2
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3 4
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with t2 as
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(
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select 1,2
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union all
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values (1,2),(3,4)
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)
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select * from t2;
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1 2
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1 2
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1 2
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3 4
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with t2 as
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(
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values (1,2),(3,4)
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union all
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select 1,2
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)
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select * from t2;
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1 2
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1 2
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3 4
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1 2
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with t2 as
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(
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values (1,2)
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union all
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values (1,2),(3,4)
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)
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select * from t2;
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1 2
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1 2
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1 2
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3 4
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# recursive CTE that uses VALUES structure(s) : singe VALUES structure as anchor
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with recursive t2(a,b) as
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(
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values(1,1)
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union
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select t1.a, t1.b
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from t1,t2
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where t1.a=t2.a
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)
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select * from t2;
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a b
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1 1
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1 2
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with recursive t2(a,b) as
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(
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values(1,1)
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union
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select t1.a+1, t1.b
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from t1,t2
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where t1.a=t2.a
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)
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select * from t2;
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a b
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1 1
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2 2
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2 1
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3 5
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# recursive CTE that uses VALUES structure(s) : several VALUES structures as anchors
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with recursive t2(a,b) as
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(
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values(1,1)
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union
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values (3,4)
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union
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select t2.a+1, t1.b
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from t1,t2
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where t1.a=t2.a
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)
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select * from t2;
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a b
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1 1
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3 4
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2 2
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2 1
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3 5
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# recursive CTE that uses VALUES structure(s) : that uses UNION ALL
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with recursive t2(a,b,st) as
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(
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values(1,1,1)
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union all
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select t2.a, t1.b, t2.st+1
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from t1,t2
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where t1.a=t2.a and st<3
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)
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select * from t2;
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a b st
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1 1 1
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1 2 2
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1 1 2
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1 2 3
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1 2 3
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1 1 3
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1 1 3
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# recursive CTE that uses VALUES structure(s) : computation of factorial (first 10 elements)
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with recursive fact(n,f) as
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(
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values(1,1)
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union
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select n+1,f*n from fact where n < 10
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)
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select * from fact;
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n f
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1 1
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2 1
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3 2
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4 6
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5 24
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6 120
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7 720
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8 5040
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9 40320
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10 362880
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# Derived table that uses VALUES structure(s) : singe VALUES structure
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select * from (values (1,2),(3,4)) as t2;
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1 2
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1 2
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3 4
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# Derived table that uses VALUES structure(s) : UNION with VALUES structure(s)
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select * from (select 1,2 union values (1,2)) as t2;
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1 2
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1 2
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select * from (select 1,2 union values (1,2),(3,4)) as t2;
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1 2
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1 2
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3 4
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select * from (values (1,2) union select 1,2) as t2;
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1 2
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1 2
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select * from (values (1,2),(3,4) union select 1,2) as t2;
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1 2
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1 2
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3 4
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select * from (values (5,6) union values (1,2),(3,4)) as t2;
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5 6
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5 6
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1 2
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3 4
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select * from (values (1,2) union values (1,2),(3,4)) as t2;
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1 2
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1 2
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3 4
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# Derived table that uses VALUES structure(s) : UNION ALL with VALUES structure(s)
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select * from (select 1,2 union all values (1,2),(3,4)) as t2;
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1 2
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1 2
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1 2
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3 4
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select * from (values (1,2),(3,4) union all select 1,2) as t2;
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1 2
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1 2
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3 4
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1 2
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select * from (values (1,2) union all values (1,2),(3,4)) as t2;
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1 2
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1 2
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1 2
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3 4
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# CREATE VIEW that uses VALUES structure(s) : singe VALUES structure
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create view v1 as values (1,2),(3,4);
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select * from v1;
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1 2
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1 2
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3 4
|
|
drop view v1;
|
|
# CREATE VIEW that uses VALUES structure(s) : UNION with VALUES structure(s)
|
|
create view v1 as
|
|
select 1,2
|
|
union
|
|
values (1,2);
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
drop view v1;
|
|
create view v1 as
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
create view v1 as
|
|
values (1,2)
|
|
union
|
|
select 1,2;
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
drop view v1;
|
|
create view v1 as
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
create view v1 as
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
select * from v1;
|
|
5 6
|
|
5 6
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
# CREATE VIEW that uses VALUES structure(s) : UNION ALL with VALUES structure(s)
|
|
create view v1 as
|
|
values (1,2)
|
|
union
|
|
values (1,2),(3,4);
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
create view v1 as
|
|
select 1,2
|
|
union all
|
|
values (1,2),(3,4);
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
create view v1 as
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
1 2
|
|
drop view v1;
|
|
create view v1 as
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
select * from v1;
|
|
1 2
|
|
1 2
|
|
1 2
|
|
3 4
|
|
drop view v1;
|
|
# IN-subquery with VALUES structure(s) : simple case
|
|
select * from t1
|
|
where a in (values (1));
|
|
a b
|
|
1 2
|
|
1 1
|
|
select * from t1
|
|
where a in (select * from (values (1)) as tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
explain extended select * from t1
|
|
where a in (values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" semi join ((values (1)) "tvc_0") where "test"."t1"."a" = "tvc_0"."1"
|
|
explain extended select * from t1
|
|
where a in (select * from (values (1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" semi join ((values (1)) "tvc_0") where "test"."t1"."a" = "tvc_0"."1"
|
|
# IN-subquery with VALUES structure(s) : UNION with VALUES on the first place
|
|
select * from t1
|
|
where a in (values (1) union select 2);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
select * from t1
|
|
where a in (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where a in (values (1) union select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union /* select#3 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2))))
|
|
explain extended select * from t1
|
|
where a in (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union /* select#4 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2))))
|
|
# IN-subquery with VALUES structure(s) : UNION with VALUES on the second place
|
|
select * from t1
|
|
where a in (select 2 union values (1));
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
select * from t1
|
|
where a in (select 2 union
|
|
select * from (values (1)) tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where a in (select 2 union values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2) union /* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
explain extended select * from t1
|
|
where a in (select 2 union
|
|
select * from (values (1)) tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2) union /* select#3 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
# IN-subquery with VALUES structure(s) : UNION ALL
|
|
select * from t1
|
|
where a in (values (1) union all select b from t1);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
7 8
|
|
select * from t1
|
|
where a in (select * from (values (1)) as tvc_0 union all
|
|
select b from t1);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
7 8
|
|
explain extended select * from t1
|
|
where a in (values (1) union all select b from t1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union all /* select#3 */ select "test"."t1"."b" from "test"."t1" where <cache>("test"."t1"."a") = "test"."t1"."b")))
|
|
explain extended select * from t1
|
|
where a in (select * from (values (1)) as tvc_0 union all
|
|
select b from t1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union all /* select#4 */ select "test"."t1"."b" from "test"."t1" where <cache>("test"."t1"."a") = "test"."t1"."b")))
|
|
# NOT IN subquery with VALUES structure(s) : simple case
|
|
select * from t1
|
|
where a not in (values (1),(2));
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
select * from t1
|
|
where a not in (select * from (values (1),(2)) as tvc_0);
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
explain extended select * from t1
|
|
where a not in (values (1),(2));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a","test"."t1"."a" in ( <materialize> (/* select#3 */ select "tvc_0"."1" from (values (1),(2)) "tvc_0" ), <primary_index_lookup>("test"."t1"."a" in <temporary table> on distinct_key where "test"."t1"."a" = "<subquery3>"."1"))))
|
|
explain extended select * from t1
|
|
where a not in (select * from (values (1),(2)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a","test"."t1"."a" in ( <materialize> (/* select#2 */ select "tvc_0"."1" from (values (1),(2)) "tvc_0" ), <primary_index_lookup>("test"."t1"."a" in <temporary table> on distinct_key where "test"."t1"."a" = "<subquery2>"."1"))))
|
|
# NOT IN subquery with VALUES structure(s) : UNION with VALUES on the first place
|
|
select * from t1
|
|
where a not in (values (1) union select 2);
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
select * from t1
|
|
where a not in (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
explain extended select * from t1
|
|
where a not in (values (1) union select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
4 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") = "tvc_0"."1") union /* select#3 */ select 2 having trigcond(<cache>("test"."t1"."a") = <ref_null_helper>(2)))))
|
|
explain extended select * from t1
|
|
where a not in (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") = "tvc_0"."1") union /* select#4 */ select 2 having trigcond(<cache>("test"."t1"."a") = <ref_null_helper>(2)))))
|
|
# NOT IN subquery with VALUES structure(s) : UNION with VALUES on the second place
|
|
select * from t1
|
|
where a not in (select 2 union values (1));
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
select * from t1
|
|
where a not in (select 2 union
|
|
select * from (values (1)) as tvc_0);
|
|
a b
|
|
4 6
|
|
9 7
|
|
7 8
|
|
explain extended select * from t1
|
|
where a not in (select 2 union values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having trigcond(<cache>("test"."t1"."a") = <ref_null_helper>(2)) union /* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") = "tvc_0"."1"))))
|
|
explain extended select * from t1
|
|
where a not in (select 2 union
|
|
select * from (values (1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION <derived4> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where !<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having trigcond(<cache>("test"."t1"."a") = <ref_null_helper>(2)) union /* select#3 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") = "tvc_0"."1"))))
|
|
# ANY-subquery with VALUES structure(s) : simple case
|
|
select * from t1
|
|
where a = any (values (1),(2));
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
select * from t1
|
|
where a = any (select * from (values (1),(2)) as tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where a = any (values (1),(2));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" semi join ((values (1),(2)) "tvc_0") where "test"."t1"."a" = "tvc_0"."1"
|
|
explain extended select * from t1
|
|
where a = any (select * from (values (1),(2)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" semi join ((values (1),(2)) "tvc_0") where "test"."t1"."a" = "tvc_0"."1"
|
|
# ANY-subquery with VALUES structure(s) : UNION with VALUES on the first place
|
|
select * from t1
|
|
where a = any (values (1) union select 2);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
select * from t1
|
|
where a = any (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where a = any (values (1) union select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union /* select#3 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2))))
|
|
explain extended select * from t1
|
|
where a = any (select * from (values (1)) as tvc_0 union
|
|
select 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1" union /* select#4 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2))))
|
|
# ANY-subquery with VALUES structure(s) : UNION with VALUES on the second place
|
|
select * from t1
|
|
where a = any (select 2 union values (1));
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
select * from t1
|
|
where a = any (select 2 union
|
|
select * from (values (1)) as tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where a = any (select 2 union values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2) union /* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
explain extended select * from t1
|
|
where a = any (select 2 union
|
|
select * from (values (1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 2 having <cache>("test"."t1"."a") = <ref_null_helper>(2) union /* select#3 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
# ALL-subquery with VALUES structure(s) : simple case
|
|
select * from t1
|
|
where a = all (values (1));
|
|
a b
|
|
1 2
|
|
1 1
|
|
select * from t1
|
|
where a = all (select * from (values (1)) as tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
explain extended select * from t1
|
|
where a = all (values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
3 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <not>(<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#3 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") <> "tvc_0"."1")))))
|
|
explain extended select * from t1
|
|
where a = all (select * from (values (1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <not>(<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") <> "tvc_0"."1")))))
|
|
# ALL-subquery with VALUES structure(s) : UNION with VALUES on the first place
|
|
select * from t1
|
|
where a = all (values (1) union select 1);
|
|
a b
|
|
1 2
|
|
1 1
|
|
select * from t1
|
|
where a = all (select * from (values (1)) as tvc_0 union
|
|
select 1);
|
|
a b
|
|
1 2
|
|
1 1
|
|
explain extended select * from t1
|
|
where a = all (values (1) union select 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
4 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <not>(<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") <> "tvc_0"."1") union /* select#3 */ select 1 having trigcond(<cache>("test"."t1"."a") <> <ref_null_helper>(1))))))
|
|
explain extended select * from t1
|
|
where a = all (select * from (values (1)) as tvc_0 union
|
|
select 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <not>(<expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select "tvc_0"."1" from (values (1)) "tvc_0" where trigcond(<cache>("test"."t1"."a") <> "tvc_0"."1") union /* select#4 */ select 1 having trigcond(<cache>("test"."t1"."a") <> <ref_null_helper>(1))))))
|
|
# ALL-subquery with VALUES structure(s) : UNION with VALUES on the second place
|
|
select * from t1
|
|
where a = any (select 1 union values (1));
|
|
a b
|
|
1 2
|
|
1 1
|
|
select * from t1
|
|
where a = any (select 1 union
|
|
select * from (values (1)) as tvc_0);
|
|
a b
|
|
1 2
|
|
1 1
|
|
explain extended select * from t1
|
|
where a = any (select 1 union values (1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 1 having <cache>("test"."t1"."a") = <ref_null_helper>(1) union /* select#4 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
explain extended select * from t1
|
|
where a = any (select 1 union
|
|
select * from (values (1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","test"."t1"."b" AS "b" from "test"."t1" where <expr_cache><"test"."t1"."a">(<in_optimizer>("test"."t1"."a",<exists>(/* select#2 */ select 1 having <cache>("test"."t1"."a") = <ref_null_helper>(1) union /* select#3 */ select "tvc_0"."1" from (values (1)) "tvc_0" where <cache>("test"."t1"."a") = "tvc_0"."1")))
|
|
# prepare statement that uses VALUES structure(s): single VALUES structure
|
|
prepare stmt1 from '
|
|
values (1,2);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
deallocate prepare stmt1;
|
|
# prepare statement that uses VALUES structure(s): UNION with VALUES structure(s)
|
|
prepare stmt1 from '
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
select 1,2
|
|
union
|
|
values (3,4)
|
|
union
|
|
values (1,2);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
';
|
|
execute stmt1;
|
|
5 6
|
|
5 6
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
5 6
|
|
5 6
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
# prepare statement that uses VALUES structure(s): UNION ALL with VALUES structure(s)
|
|
prepare stmt1 from '
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
1 2
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
1 2
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
select 1,2
|
|
union all
|
|
values (3,4)
|
|
union all
|
|
values (1,2);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
1 2
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
3 4
|
|
1 2
|
|
deallocate prepare stmt1;
|
|
prepare stmt1 from '
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
';
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
1 2
|
|
3 4
|
|
execute stmt1;
|
|
1 2
|
|
1 2
|
|
1 2
|
|
3 4
|
|
deallocate prepare stmt1;
|
|
# explain query that uses VALUES structure(s): single VALUES structure
|
|
explain
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
explain format=json
|
|
values (1,2);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<unit1>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# explain query that uses VALUES structure(s): UNION with VALUES structure(s)
|
|
explain
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
|
|
explain
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
|
|
explain
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
|
|
explain format=json
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain format=json
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain format=json
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain
|
|
select 1,2
|
|
union
|
|
values (3,4)
|
|
union
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2,3> ALL NULL NULL NULL NULL NULL
|
|
explain format=json
|
|
select 1,2
|
|
union
|
|
values (3,4)
|
|
union
|
|
values (1,2);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2,3>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 3,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# explain query that uses VALUES structure(s): UNION ALL with VALUES structure(s)
|
|
explain
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
|
|
explain
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
explain
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
explain format=json
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain format=json
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain format=json
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
explain
|
|
select 1,2
|
|
union all
|
|
values (3,4)
|
|
union all
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
explain format=json
|
|
select 1,2
|
|
union all
|
|
values (3,4)
|
|
union all
|
|
values (1,2);
|
|
EXPLAIN
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2,3>",
|
|
"access_type": "ALL",
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 3,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# analyze query that uses VALUES structure(s): single VALUES structure
|
|
analyze
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
analyze format=json
|
|
values (1,2);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<unit1>",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"r_rows": null,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# analyze query that uses VALUES structure(s): UNION with VALUES structure(s)
|
|
analyze
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
|
|
analyze
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
|
|
analyze
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 3.00 NULL NULL
|
|
analyze format=json
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 2,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze format=json
|
|
values (1,2),(3,4)
|
|
union
|
|
select 1,2;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 2,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze format=json
|
|
values (5,6)
|
|
union
|
|
values (1,2),(3,4);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 3,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze
|
|
select 1,2
|
|
union
|
|
values (3,4)
|
|
union
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2,3> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
|
|
analyze format=json
|
|
select 1,2
|
|
union
|
|
values (3,4)
|
|
union
|
|
values (1,2);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2,3>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 2,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 3,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# analyze query that uses VALUES structure(s): UNION ALL with VALUES structure(s)
|
|
analyze
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
|
|
analyze
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
analyze
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
analyze format=json
|
|
values (1,2),(3,4)
|
|
union all
|
|
select 1,2;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"r_rows": null,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze format=json
|
|
select 1,2
|
|
union
|
|
values (1,2),(3,4);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 2,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze format=json
|
|
values (1,2)
|
|
union all
|
|
values (1,2),(3,4);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"r_rows": null,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
analyze
|
|
select 1,2
|
|
union all
|
|
values (3,4)
|
|
union all
|
|
values (1,2);
|
|
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
analyze format=json
|
|
select 1,2
|
|
union all
|
|
values (3,4)
|
|
union all
|
|
values (1,2);
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<union1,2,3>",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"r_rows": null,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 3,
|
|
"operation": "UNION",
|
|
"table": {
|
|
"message": "No tables used"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
# different number of values in TVC
|
|
values (1,2),(3,4,5);
|
|
ERROR HY000: The used table value constructor has a different number of values
|
|
# illegal parameter data types in TVC
|
|
values (1,point(1,1)),(1,1);
|
|
ERROR HY000: Illegal parameter data types geometry and int for operation 'TABLE VALUE CONSTRUCTOR'
|
|
values (1,point(1,1)+1);
|
|
ERROR HY000: Illegal parameter data types geometry and int for operation '+'
|
|
# field reference in TVC
|
|
select * from (values (1), (b), (2)) as new_tvc;
|
|
ERROR HY000: Field reference 'b' can't be used in table value constructor
|
|
select * from (values (1), (t1.b), (2)) as new_tvc;
|
|
ERROR HY000: Field reference 't1.b' can't be used in table value constructor
|
|
drop table t1;
|
|
#
|
|
# MDEV-15940: cursor over TVC
|
|
#
|
|
DECLARE
|
|
v INT;
|
|
CURSOR cur IS VALUES(7);
|
|
BEGIN
|
|
OPEN cur;
|
|
FETCH cur INTO v;
|
|
SELECT v;
|
|
END;
|
|
|
|
|
v
|
|
7
|
|
DECLARE
|
|
v INT DEFAULT 0;
|
|
BEGIN
|
|
FOR a IN (VALUES (7)) LOOP
|
|
SET v = v + 1;
|
|
END LOOP;
|
|
SELECT v;
|
|
END;
|
|
|
|
|
v
|
|
1
|
|
#
|
|
# MDEV-16038: empty row in TVC
|
|
#
|
|
with t as (values (),()) select 1 from t;
|
|
ERROR HY000: Row with no elements is not allowed in table value constructor in this context
|
|
#
|
|
# MDEV-17017: TVC in derived table
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (9), (3), (2);
|
|
select * from (values (7), (5), (8), (1), (3), (8), (1)) t;
|
|
7
|
|
7
|
|
5
|
|
8
|
|
1
|
|
3
|
|
8
|
|
1
|
|
explain select * from (values (7), (5), (8), (1), (3), (8), (1)) t;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
select * from (values (1,11), (7,77), (3,31), (4,42)) t;
|
|
1 11
|
|
1 11
|
|
7 77
|
|
3 31
|
|
4 42
|
|
explain select * from (values (1,11), (7,77), (3,31), (4,42)) t;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
select * from (values (7), (5), (8), (1) union values (3), (8), (1)) t;
|
|
7
|
|
7
|
|
5
|
|
8
|
|
1
|
|
3
|
|
explain select * from (values (7), (5), (8), (1) union values (3), (8), (1)) t;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
|
|
select * from (values (7), (5), (8), (1) union select * from t1) t;
|
|
7
|
|
7
|
|
5
|
|
8
|
|
1
|
|
9
|
|
3
|
|
2
|
|
explain select * from (values (7), (5), (8), (1) union select * from t1) t;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION t1 ALL NULL NULL NULL NULL 3
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
|
|
drop table t1;
|
|
#
|
|
# MDEV-16930: expression in the first row of TVC specifying derived table
|
|
#
|
|
SELECT 1 + 1, 2, 'abc';
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
SELECT * FROM (SELECT 1 + 1, 2, 'abc') t;
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
WITH cte AS (SELECT 1 + 1, 2, 'abc') SELECT * FROM cte;
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
SELECT 1 + 1, 2, 'abc' UNION SELECT 3+4, 3, 'abc';
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
7 3 abc
|
|
CREATE VIEW v1 AS SELECT 1 + 1, 2, 'abc';
|
|
SELECT * FROM v1;
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
DROP VIEW v1;
|
|
VALUES(1 + 1,2,'abc');
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
SELECT * FROM (VALUES(1 + 1,2,'abc')) t;
|
|
1 + 1 2 abc
|
|
2 2 abc
|
|
#
|
|
# MDEV-17894: tvc with ORDER BY ... LIMIT
|
|
#
|
|
values (5), (7), (1), (3), (4) limit 2;
|
|
5
|
|
5
|
|
7
|
|
explain extended values (5), (7), (1), (3), (4) limit 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 values (5),(7),(1),(3),(4) limit 2
|
|
values (5), (7), (1), (3), (4) limit 2 offset 1;
|
|
5
|
|
7
|
|
1
|
|
explain extended values (5), (7), (1), (3), (4) limit 2 offset 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 values (5),(7),(1),(3),(4) limit 1,2
|
|
values (5), (7), (1), (3), (4) order by 1 limit 2;
|
|
5
|
|
1
|
|
3
|
|
explain extended values (5), (7), (1), (3), (4) order by 1 limit 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 values (5),(7),(1),(3),(4) order by 1 limit 2
|
|
values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1;
|
|
5
|
|
3
|
|
4
|
|
explain extended values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 values (5),(7),(1),(3),(4) order by 1 limit 1,2
|
|
values (5), (7), (1), (3), (4) order by 1;
|
|
5
|
|
1
|
|
3
|
|
4
|
|
5
|
|
7
|
|
explain extended values (5), (7), (1), (3), (4) order by 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 values (5),(7),(1),(3),(4) order by 1
|
|
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 2;
|
|
5 90
|
|
4 10
|
|
7 20
|
|
3 50
|
|
1 70
|
|
5 90
|
|
explain extended values (5,90), (7,20), (1,70), (3,50), (4,10) order by 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 values (5,90),(7,20),(1,70),(3,50),(4,10) order by 2
|
|
select 2 union (values (5), (7), (1), (3), (4) limit 2);
|
|
2
|
|
2
|
|
5
|
|
7
|
|
explain extended select 2 union (values (5), (7), (1), (3), (4) limit 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 2 AS "2" union (values (5),(7),(1),(3),(4) limit 2)
|
|
select 2 union (values (5), (7), (1), (3), (4) limit 2 offset 1);
|
|
2
|
|
2
|
|
7
|
|
1
|
|
explain extended select 2 union (values (5), (7), (1), (3), (4) limit 2 offset 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 2 AS "2" union (values (5),(7),(1),(3),(4) limit 1,2)
|
|
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2);
|
|
2
|
|
2
|
|
1
|
|
3
|
|
explain extended select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 2 AS "2" union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
|
|
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1);
|
|
2
|
|
2
|
|
3
|
|
4
|
|
explain extended select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 2 AS "2" union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,2)
|
|
(values (5), (7), (1), (3), (4) limit 2) union select 2;
|
|
5
|
|
5
|
|
7
|
|
2
|
|
explain extended (values (5), (7), (1), (3), (4) limit 2) union select 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 2) union /* select#2 */ select 2 AS "2"
|
|
(values (5), (7), (1), (3), (4) limit 2 offset 1) union select 2;
|
|
5
|
|
7
|
|
1
|
|
2
|
|
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 1) union select 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union /* select#2 */ select 2 AS "2"
|
|
(values (5), (7), (1), (3), (4) order by 1 limit 2) union select 2;
|
|
5
|
|
1
|
|
3
|
|
2
|
|
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2) union select 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2) union /* select#2 */ select 2 AS "2"
|
|
(values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1) union select 2;
|
|
5
|
|
3
|
|
4
|
|
2
|
|
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1) union select 2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,2) union /* select#2 */ select 2 AS "2"
|
|
select 3 union all (values (5), (7), (1), (3), (4) limit 2 offset 3);
|
|
3
|
|
3
|
|
3
|
|
4
|
|
explain extended select 3 union all (values (5), (7), (1), (3), (4) limit 2 offset 3);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 3 AS "3" union all (values (5),(7),(1),(3),(4) limit 3,2)
|
|
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3;
|
|
5
|
|
3
|
|
4
|
|
3
|
|
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 3,2) union all /* select#2 */ select 3 AS "3"
|
|
select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2);
|
|
3
|
|
3
|
|
1
|
|
3
|
|
explain extended select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 3 AS "3" union all (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
|
|
(values (5), (7), (1), (3), (4) order by 1 limit 2) union all select 3;
|
|
5
|
|
1
|
|
3
|
|
3
|
|
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2) union all select 3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2) union all /* select#2 */ select 3 AS "3"
|
|
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union
|
|
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
|
|
5
|
|
7
|
|
1
|
|
3
|
|
explain extended ( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union
|
|
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
|
|
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union all
|
|
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
|
|
5
|
|
7
|
|
1
|
|
1
|
|
3
|
|
explain extended ( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union all
|
|
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union all (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
|
|
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3 order by 1;
|
|
5
|
|
3
|
|
3
|
|
4
|
|
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3 order by 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 (values (5),(7),(1),(3),(4) limit 3,2) union all /* select#2 */ select 3 AS "3" order by 1
|
|
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3 order by 1;
|
|
5
|
|
3
|
|
3
|
|
4
|
|
5
|
|
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3 order by 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,3) union all /* select#2 */ select 3 AS "3" order by 1
|
|
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3
|
|
order by 1 limit 2 offset 1;
|
|
5
|
|
3
|
|
4
|
|
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3
|
|
order by 1 limit 2 offset 1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
|
|
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,3) union all /* select#2 */ select 3 AS "3" order by 1 limit 1,2
|
|
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
|
|
ERROR 42S22: Unknown column '3' in 'order clause'
|
|
create view v1 as values (5), (7), (1), (3), (4) order by 1 limit 2;
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE VIEW "v1" AS values (5),(7),(1),(3),(4) order by 1 limit 2 latin1 latin1_swedish_ci
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select * from v1;
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|
5
|
|
1
|
|
3
|
|
drop view v1;
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|
create view v1 as
|
|
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union
|
|
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
|
|
show create view v1;
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|
View Create View character_set_client collation_connection
|
|
v1 CREATE VIEW "v1" AS (values (5),(7),(1),(3),(4) limit 1,2) union (values (5),(7),(1),(3),(4) order by 1 limit 2) latin1 latin1_swedish_ci
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|
select * from v1;
|
|
5
|
|
7
|
|
1
|
|
3
|
|
drop view v1;
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|
create view v1 as values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
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|
ERROR 42S22: Unknown column '3' in 'order clause'
|
|
create view v1 as
|
|
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
|
|
union
|
|
( values (5), (7), (1), (3), (4) order by 2 limit 2 );
|
|
ERROR 42S22: Unknown column '2' in 'order clause'
|