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https://github.com/MariaDB/server.git
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592 lines
16 KiB
Plaintext
592 lines
16 KiB
Plaintext
--disable_warnings
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drop table if exists t0, t1, t2, t3, t4;
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--enable_warnings
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#
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# 1. Subquery with GROUP/HAVING
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#
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create table t1 (oref int, grp int, ie int) ;
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insert into t1 (oref, grp, ie) values
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(1, 1, 1),
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(1, 1, 1),
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(1, 2, NULL),
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(2, 1, 3),
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(3, 1, 4),
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(3, 2, NULL);
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# Ok, for
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# select max(ie) from t1 where oref=PARAM group by grp
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# we'll have:
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# PARAM subquery result
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# 1 -> {(1), (NULL)} matching + NULL
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# 2 -> {(3)} non-matching
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# 3 -> {(3), (NULL)} non-matching + NULL
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# 4 -> {} empty set
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create table t2 (oref int, a int);
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insert into t2 values
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(1, 1),
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(2, 2),
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(3, 3),
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(4, NULL),
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(2, NULL);
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# true, false, null, false, null
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select a, oref, a in (select max(ie)
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from t1 where oref=t2.oref group by grp) Z from t2;
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# This must have a trigcond
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explain extended
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select a, oref, a in (select max(ie)
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from t1 where oref=t2.oref group by grp) Z from t2;
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# This must not have a trigcond:
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explain extended
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select a, oref from t2
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where a in (select max(ie) from t1 where oref=t2.oref group by grp);
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select a, oref, a in (
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select max(ie) from t1 where oref=t2.oref group by grp union
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select max(ie) from t1 where oref=t2.oref group by grp
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) Z from t2;
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# Non-correlated subquery, 2 NULL evaluations
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create table t3 (a int);
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insert into t3 values (NULL), (NULL);
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flush status;
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select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
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show status like 'Handler_read_rnd_next';
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select ' ^ This must show 11' Z;
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# This must show trigcond:
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explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
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drop table t1, t2, t3;
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#
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# 2. Subquery handled with 'index_subquery':
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#
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create table t1 (a int, oref int, key(a));
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insert into t1 values
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(1, 1),
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(1, NULL),
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(2, 3),
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(2, NULL),
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(3, NULL);
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create table t2 (a int, oref int);
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insert into t2 values (1, 1), (2,2), (NULL, 3), (NULL, 4);
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select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
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# The next explain shows "using index" but that is just incorrect display
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# (there is a bug filed about this).
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explain extended
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select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
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flush status;
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select oref, a from t2 where a in (select a from t1 where oref=t2.oref);
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# This will only show access to t2:
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show status like '%Handler_read_rnd_next';
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# Check that repeated NULL-scans are not cached (subq. is not correlated):
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delete from t2;
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insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0);
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flush status;
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select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
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show status like '%Handler_read%';
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select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z;
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drop table t1, t2;
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#
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# 3. Subquery handled with 'unique_index_subquery':
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#
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create table t1 (a int, b int, primary key (a));
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insert into t1 values (1,1), (3,1),(100,1);
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create table t2 (a int, b int);
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insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
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select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
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drop table t1, t2;
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#
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# 4. Subquery that is a join, with ref access
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#
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create table t1 (a int, b int, key(a));
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insert into t1 values
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(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
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create table t2 like t1;
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insert into t2 select * from t1;
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update t2 set b=1;
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create table t3 (a int, oref int);
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insert into t3 values (1, 1), (NULL,1), (NULL,0);
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select a, oref,
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t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
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from t3;
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# This must have trigcond in WHERE and HAVING:
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explain extended
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select a, oref,
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t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
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from t3;
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drop table t1, t2, t3;
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#
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# BUG#24085: Wrong query result for "NULL IN (SELECT ... UNION SELECT ...)"
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#
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# case 1: NULL IN (SELECT not_null_val FROM ...) w/o HAVING/GROUP-BY/etc
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create table t1 (a int NOT NULL, b int NOT NULL, key(a));
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insert into t1 values
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(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
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create table t2 like t1;
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insert into t2 select * from t1;
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update t2 set b=1;
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create table t3 (a int, oref int);
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insert into t3 values (1, 1), (NULL,1), (NULL,0);
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select a, oref,
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t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
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from t3;
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--echo This must show a trig_cond:
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explain extended
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select a, oref,
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t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
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from t3;
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drop table t1,t2,t3;
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# case 2: NULL IN (SELECT not_null_val FROM) where SELECT has GROUP BY
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create table t1 (oref int, grp int);
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insert into t1 (oref, grp) values
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(1, 1),
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(1, 1);
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# Ok, for
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# select count(*) from t1 group by grp having grp=PARAM
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# we'll have:
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# PARAM subuqery result
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# 1 -> {(2)}
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# 2 -> {} - empty set
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create table t2 (oref int, a int);
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insert into t2 values
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(1, NULL),
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(2, NULL);
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select a, oref,
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a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
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--echo This must show a trig_cond:
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explain extended
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select a, oref,
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a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
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drop table t1, t2;
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create table t1 (a int, b int, primary key (a));
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insert into t1 values (1,1), (3,1),(100,1);
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create table t2 (a int, b int);
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insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
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select a,b, a in (select a from t1 where t1.b = t2.b union select a from
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t1 where t1.b = t2.b) Z from t2 ;
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select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
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drop table t1, t2;
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#
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# BUG#24127: Incorrect results of row-based subqueries with NULLs on the left side.
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#
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create table t3 (a int);
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insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t2 (a int, b int, oref int);
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insert into t2 values (NULL,1, 100), (NULL,2, 100);
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create table t1 (a int, b int, c int, key(a,b));
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insert into t1 select 2*A, 2*A, 100 from t3;
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# First test index subquery engine
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explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
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select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
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# Then check that we do turn off 'ref' scans in the subquery
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create table t4 (x int);
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insert into t4 select A.a + 10*B.a from t1 A, t1 B;
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explain extended
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select a,b, oref,
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(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
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from t2;
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select a,b, oref,
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(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
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from t2;
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drop table t1,t2,t3,t4;
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# More tests for tricky multi-column cases, where some of pushed-down
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# equalities are used for index lookups and some arent.
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create table t1 (oref char(4), grp int, ie1 int, ie2 int);
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insert into t1 (oref, grp, ie1, ie2) values
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('aa', 10, 2, 1),
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('aa', 10, 1, 1),
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('aa', 20, 2, 1),
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('bb', 10, 3, 1),
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('cc', 10, 4, 2),
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('cc', 20, 3, 2),
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('ee', 10, 2, 1),
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('ee', 10, 1, 2),
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('ff', 20, 2, 2),
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('ff', 20, 1, 2);
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create table t2 (oref char(4), a int, b int);
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insert into t2 values
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('ee', NULL, 1),
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('bb', 2, 1),
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('ff', 2, 2),
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('cc', 3, NULL),
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('bb', NULL, NULL),
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('aa', 1, 1),
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('dd', 1, NULL);
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alter table t1 add index idx(ie1,ie2);
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# cc 3 NULL NULL
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ;
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insert into t2 values ('new1', 10,10);
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insert into t1 values ('new1', 1234, 10, NULL);
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# new1, 10, 10, NULL,
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
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explain extended
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
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drop table t1, t2;
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# Now test different column types:
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create table t1 (oref char(4), grp int, ie int);
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insert into t1 (oref, grp, ie) values
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('aa', 10, 2),
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('aa', 10, 1),
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('aa', 20, NULL),
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('bb', 10, 3),
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('cc', 10, 4),
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('cc', 20, NULL),
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('ee', 10, NULL),
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('ee', 10, NULL),
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('ff', 20, 2),
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('ff', 20, 1);
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create table t2 (oref char(4), a int);
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insert into t2 values
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('ee', NULL),
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('bb', 2),
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('ff', 2),
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('cc', 3),
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('aa', 1),
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('dd', NULL),
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('bb', NULL);
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select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
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select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
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select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
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select oref, a from t2 where
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a in (select min(ie) from t1 where oref=t2.oref group by grp);
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select oref, a from t2 where
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a not in (select min(ie) from t1 where oref=t2.oref group by grp);
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#
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update t1 set ie=3 where oref='ff' and ie=1;
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select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
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grp) Z from t2;
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select oref, a from t2 where a in (select min(ie) from t1 where
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oref=t2.oref group by grp);
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select oref, a from t2 where a not in (select min(ie) from t1 where
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oref=t2.oref group by grp);
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select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
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grp having min(ie) > 1) Z from t2;
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select oref, a from t2 where a in (select min(ie) from t1 where
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oref=t2.oref group by grp having min(ie) > 1);
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select oref, a from t2 where a not in (select min(ie) from t1 where
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oref=t2.oref group by grp having min(ie) > 1);
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#
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alter table t1 add index idx(ie);
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explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
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select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
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alter table t1 drop index idx;
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alter table t1 add index idx(oref,ie);
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explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
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select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
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explain
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select oref, a,
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a in (select min(ie) from t1 where oref=t2.oref
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group by grp having min(ie) > 1) Z
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from t2;
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select oref, a,
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a in (select min(ie) from t1 where oref=t2.oref
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group by grp having min(ie) > 1) Z
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from t2;
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select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref
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group by grp having min(ie) > 1);
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select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref
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group by grp having min(ie) > 1);
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drop table t1,t2;
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create table t1 (oref char(4), grp int, ie1 int, ie2 int);
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insert into t1 (oref, grp, ie1, ie2) values
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('aa', 10, 2, 1),
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('aa', 10, 1, 1),
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('aa', 20, 2, 1),
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('bb', 10, 3, 1),
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('cc', 10, 4, 2),
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('cc', 20, 3, 2),
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('ee', 10, 2, 1),
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('ee', 10, 1, 2),
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('ff', 20, 2, 2),
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('ff', 20, 1, 2);
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create table t2 (oref char(4), a int, b int);
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insert into t2 values
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('ee', NULL, 1),
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('bb', 2, 1),
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('ff', 2, 2),
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('cc', 3, NULL),
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('bb', NULL, NULL),
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('aa', 1, 1),
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('dd', 1, NULL);
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
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select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
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select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
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select oref, a, b,
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(a,b) in (select min(ie1),max(ie2) from t1
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where oref=t2.oref group by grp) Z
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from t2;
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select oref, a, b from t2 where
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(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
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select oref, a, b from t2 where
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(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
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alter table t1 add index idx(ie1,ie2);
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explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
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select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
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select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
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explain extended
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select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
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drop table t1,t2;
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create table t1 (oref char(4), grp int, ie int primary key);
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insert into t1 (oref, grp, ie) values
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('aa', 10, 2),
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('aa', 10, 1),
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('bb', 10, 3),
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('cc', 10, 4),
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('cc', 20, 5),
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('cc', 10, 6);
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create table t2 (oref char(4), a int);
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insert into t2 values
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('ee', NULL),
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('bb', 2),
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('cc', 5),
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('cc', 2),
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('cc', NULL),
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('aa', 1),
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('bb', NULL);
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explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
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select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
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select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
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explain
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select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
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select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
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drop table t1,t2;
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#
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# BUG#24420: row-based IN suqueries with aggregation when the left operand
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# of the subquery predicate may contain NULL values
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#
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create table t1 (a int, b int);
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insert into t1 values (0,0), (2,2), (3,3);
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create table t2 (a int, b int);
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insert into t2 values (1,1), (3,3);
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select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
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insert into t2 values (NULL,4);
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select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
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drop table t1,t2;
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#
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# Bug #24484: Aggregate function used in column list subquery gives erroneous
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# error
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#
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CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
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INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),
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(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'),
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(1,9,'m');
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CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
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INSERT INTO t2 SELECT * FROM t1;
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|
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# Gives error, but should work since it is (a, b) is the PK so only one
|
|
# given match possible
|
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SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b))
|
|
as test FROM t1 GROUP BY a;
|
|
SELECT * FROM t1 GROUP by t1.a
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HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c
|
|
HAVING MAX(t2.b+t1.a) < 10));
|
|
|
|
SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c;
|
|
|
|
SELECT a, MAX(b),
|
|
(SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)
|
|
LIMIT 1)
|
|
as cnt,
|
|
(SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1)
|
|
as t_b,
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1)
|
|
as t_b,
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1)
|
|
as t_b
|
|
FROM t1 GROUP BY a;
|
|
|
|
SELECT a, MAX(b),
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test
|
|
FROM t1 GROUP BY a;
|
|
|
|
|
|
DROP TABLE t1, t2;
|
|
|
|
|
|
#
|
|
# Bug #27870: crash of an equijoin query with WHERE condition containing
|
|
# a subquery predicate of the form <join attr> NOT IN (SELECT ...)
|
|
#
|
|
|
|
CREATE TABLE t1 (a int);
|
|
CREATE TABLE t2 (b int, PRIMARY KEY(b));
|
|
INSERT INTO t1 VALUES (1), (NULL), (4);
|
|
INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6);
|
|
|
|
EXPLAIN EXTENDED
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4));
|
|
|
|
DROP TABLE t1,t2;
|
|
|
|
#
|
|
# Bug #28375: crash for NOT IN subquery predicate when left operand becomes NULL
|
|
#
|
|
|
|
CREATE TABLE t1 (id int);
|
|
CREATE TABLE t2 (id int PRIMARY KEY);
|
|
CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10));
|
|
INSERT INTO t1 VALUES (2), (NULL), (3), (1);
|
|
INSERT INTO t2 VALUES (234), (345), (457);
|
|
INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa');
|
|
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id);
|
|
SELECT * FROM t1
|
|
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id);
|
|
|
|
SELECT (t1.id IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id)) AS x
|
|
FROM t1;
|
|
|
|
DROP TABLE t1,t2,t3;
|
|
|
|
#
|
|
# Bug #22855: Optimizer doesn't rewrite NOT IN subselects to a correlated
|
|
# subquery
|
|
#
|
|
CREATE TABLE t1 (a INT NOT NULL);
|
|
INSERT INTO t1 VALUES (1),(-1), (65),(66);
|
|
|
|
CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY);
|
|
INSERT INTO t2 VALUES (65),(66);
|
|
|
|
SELECT a FROM t1 WHERE a NOT IN (65,66);
|
|
SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
|
|
EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
|
|
|
|
DROP TABLE t1;
|
|
|
|
--echo End of 5.0 tests
|