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Fixed LP bug #886145.

Browse Source 
The bug happened because in some cases the function JOIN::exec
did not save the value of TABLE::pre_idx_push_select_cond in
TABLE::select->pre_idx_push_select_cond for the sort table.

Noticed and fixed a bug in the function make_cond_remainder
that builds the remainder condition after extraction of an index
pushdown condition from the where condition. The code
erroneously assumed that the function make_cond_for_table left
the value of ICP_COND_USES_INDEX_ONLY in sub-condition markers.
Adjusted many result files from the regression test suite
after this fix .
This commit is contained in:
Igor Babaev
2011-11-06 01:23:03 -07:00
parent 928e94fb98
commit e0c1b3f242
14 changed files with 162 additions and 32 deletions
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27
mysql-test/include/icp_tests.inc
View File

@@ -697,3 +697,30 @@ SELECT * FROM t1
ORDER BY a;
DROP TABLE t1;
--echo #
--echo # Bug#886145: join with ICP + ORDER BY
--echo #
CREATE TABLE t1 (b int NOT NULL, c int, a varchar(1024), PRIMARY KEY (b));
INSERT INTO t1 VALUES (1,4,'Ill');
CREATE TABLE t2 (a varchar(1024), KEY (a(512)));
INSERT INTO t2 VALUES
('Ill'), ('eckqzsflbzaffti'), ('w'), ('she'), ('gxbwypqtjzwywwer'), ('w');
SET SESSION optimizer_switch='index_condition_pushdown=off';
EXPLAIN
SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
HAVING t1.c != 5 ORDER BY t1.c;
SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
HAVING t1.c != 5 ORDER BY t1.c;
SET SESSION optimizer_switch='index_condition_pushdown=on';
EXPLAIN
SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
HAVING t1.c != 5 ORDER BY t1.c;
SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
HAVING t1.c != 5 ORDER BY t1.c;
DROP TABLE t1,t2;