mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-28 06:45:06 +03:00
68 lines
3.4 KiB
Plaintext
68 lines
3.4 KiB
Plaintext
# Test cases for MCOL-4543
|
|
# The test cases demonstrate that non-referenced subquery columns
|
|
# (by non-reference we mean the subquery column is not
|
|
# referenced/used by the outer query) which are optimized out
|
|
# by the patch for MCOL-4543 do not impact the query results.
|
|
|
|
-- source ../include/have_columnstore.inc
|
|
|
|
--disable_warnings
|
|
DROP DATABASE IF EXISTS mcol4543;
|
|
--enable_warnings
|
|
|
|
CREATE DATABASE mcol4543;
|
|
|
|
USE mcol4543;
|
|
|
|
CREATE TABLE t1 (a int, b int) engine=columnstore;
|
|
|
|
INSERT INTO t1 values (1, 1), (2, 1), (3, 2), (4, 2), (5, 2);
|
|
|
|
# Test subquery columns referenced/not-referenced in simple projections
|
|
SELECT "123" FROM (SELECT * FROM t1) q;
|
|
SELECT "123" FROM (SELECT "234" FROM t1) q;
|
|
SELECT a FROM (SELECT * FROM t1) q;
|
|
SELECT b FROM (SELECT * FROM t1) q;
|
|
SELECT a,b FROM (SELECT * FROM t1) q;
|
|
SELECT b,a FROM (SELECT * FROM t1) q;
|
|
SELECT a FROM (SELECT * FROM (SELECT * FROM (SELECT * FROM t1) q1) q2) q3;
|
|
SELECT b FROM (SELECT * FROM (SELECT * FROM (SELECT * FROM t1) q1) q2) q3;
|
|
SELECT a FROM (SELECT b,a FROM (SELECT * FROM t1) q1) q2;
|
|
SELECT b FROM (SELECT b,a FROM (SELECT * FROM t1) q1) q2;
|
|
|
|
# Test subquery columns referenced/not-referenced in group by's and aggregates
|
|
SELECT "123" FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
|
|
SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
|
|
SELECT "123" FROM (SELECT * FROM t1) q GROUP BY a,b ORDER BY a,b;
|
|
SELECT COUNT(a) FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
|
|
SELECT COUNT(b) FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
|
|
SELECT COUNT(a) FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
|
|
SELECT COUNT(b) FROM (SELECT * FROM t1) q GROUP BY a ORDER BY a;
|
|
SELECT c1 FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c1;
|
|
SELECT c2 FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c2;
|
|
SELECT * FROM (SELECT a AS c1, COUNT(a) AS c2 FROM t1 GROUP BY c1) q ORDER BY c1,c2;
|
|
|
|
# Test subquery columns referenced/not-referenced in joins
|
|
SELECT tab1.a FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.a=tab2.a ORDER BY tab1.a;
|
|
SELECT tab1.a FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.b=tab2.b ORDER BY tab1.a;
|
|
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;
|
|
SELECT tab1.a, tab2.b FROM t1 tab1 JOIN (SELECT * FROM t1) tab2 ON tab1.a=tab2.a ORDER BY tab1.a,tab2.b;
|
|
|
|
# Test subquery columns referenced/not-referenced when subqueries contain unions
|
|
SELECT COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
|
|
SELECT COUNT(b) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
|
|
SELECT COUNT(b), COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q;
|
|
SELECT COUNT(a) FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q GROUP BY b ORDER BY b;
|
|
SELECT q1.a FROM (SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q1_1) q1 JOIN
|
|
(SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q2_1) q2 ON q1.a=q2.a ORDER BY 1;
|
|
SELECT q1.a, q2.b FROM (SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q1_1) q1 JOIN
|
|
(SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) q2_1) q2 ON q1.a=q2.a ORDER BY 2 desc, 1 asc;
|
|
|
|
# Patch for MCOL-4543 also optimizes out an unnecessary BPS projection in PrimProc
|
|
# that was happening earlier. The following 2 queries trigger this optimization.
|
|
# To see the optimization, run "select calgettrace();" after the query execution.
|
|
SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b ORDER BY b;
|
|
SELECT "123" FROM (SELECT * FROM t1) q GROUP BY b;
|
|
|
|
DROP DATABASE mcol4543;
|