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68 lines
3.4 KiB
Plaintext
68 lines
3.4 KiB
Plaintext
# Test cases for MCOL-4543
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# The test cases demonstrate that non-referenced subquery columns
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# (by non-reference we mean the subquery column is not
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# referenced/used by the outer query) which are optimized out
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# by the patch for MCOL-4543 do not impact the query results.
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-- source ../include/have_columnstore.inc
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--disable_warnings
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DROP DATABASE IF EXISTS mcol4543;
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--enable_warnings
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CREATE DATABASE mcol4543;
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USE mcol4543;
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CREATE TABLE t1 (a int, b int) engine=columnstore;
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INSERT INTO t1 values (1, 1), (2, 1), (3, 2), (4, 2), (5, 2);
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# Test subquery columns referenced/not-referenced in simple projections
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SELECT "123" FROM (SELECT * FROM t1) q;
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SELECT "123" FROM (SELECT "234" FROM t1) q;
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SELECT a FROM (SELECT * FROM t1) q;
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SELECT b FROM (SELECT * FROM t1) q;
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SELECT a,b FROM (SELECT * FROM t1) q;
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SELECT b,a FROM (SELECT * FROM t1) q;
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SELECT a FROM (SELECT * FROM (SELECT * FROM (SELECT * FROM t1) q1) q2) q3;
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SELECT b FROM (SELECT * FROM (SELECT * FROM (SELECT * FROM t1) q1) q2) q3;
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SELECT a FROM (SELECT b,a FROM (SELECT * FROM t1) q1) q2;
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SELECT b FROM (SELECT b,a FROM (SELECT * FROM t1) q1) q2;
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# Test subquery columns referenced/not-referenced in group by's and aggregates
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SELECT "123" FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
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SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
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SELECT "123" FROM (SELECT * FROM t1) q GROUP BY a,b ORDER BY a,b;
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SELECT COUNT(a) FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
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SELECT COUNT(b) FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
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SELECT COUNT(a) FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
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SELECT COUNT(b) FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
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SELECT c1 FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c1;
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SELECT c2 FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c2;
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SELECT * FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c1,c2;
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# Test subquery columns referenced/not-referenced in joins
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SELECT tab1.a FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.a=tab2.a ORDER BY tab1.a;
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SELECT tab1.a FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.b=tab2.b ORDER BY tab1.a;
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SELECT tab1.a FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.b=tab2.b and tab1.a=tab2.a ORDER BY tab1.a;
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SELECT tab1.a, tab2.b FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.a=tab2.a ORDER BY tab1.a,tab2.b;
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# Test subquery columns referenced/not-referenced when subqueries contain unions
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SELECT COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
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SELECT COUNT(b) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
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SELECT COUNT(b), COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
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SELECT COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q GROUP BY b ORDER BY b;
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SELECT q1.a FROM (SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q1_1) q1 JOIN
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(SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q2_1) q2 ON q1.a=q2.a ORDER BY 1;
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SELECT q1.a, q2.b FROM (SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q1_1) q1 JOIN
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(SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q2_1) q2 ON q1.a=q2.a ORDER BY 2 desc, 1 asc;
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# Patch for MCOL-4543 also optimizes out an unnecessary BPS projection in PrimProc
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# that was happening earlier. The following 2 queries trigger this optimization.
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# To see the optimization, run "select calgettrace();" after the query execution.
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SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
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SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b;
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DROP DATABASE mcol4543;
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