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Fixed bug mdev-4209

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Do not include BLOB fields into the key to access the temporary
table created for a materialized view/derived table.
BLOB components are not allowed in keys.
This commit is contained in:
Igor Babaev 2013-02-28 14:35:46 -08:00
commit 90c0f3d3ab
3 changed files with 86 additions and 1 deletions
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34
mysql-test/t/derived_view.test
View file

@ -1511,6 +1511,40 @@ WHERE b >= a
set optimizer_switch=@save3912_optimizer_switch;
drop table t1, t2, t3;
--echo #
--echo # MDEV-4209: equi-join on BLOB column from materialized view
--echo # or derived table
--echo #
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_with_keys=on';
CREATE TABLE t1 (c1 text, c2 int);
INSERT INTO t1 VALUES ('a',1), ('c',3), ('g',7), ('d',4), ('c',3);
CREATE TABLE t2 (c1 text, c2 int);
INSERT INTO t2 VALUES ('b',2), ('c',3);
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
EXPLAIN EXTENDED
SELECT v1.c1, v1.c2 FROM v1, t2 WHERE v1.c1=t2.c1 AND v1.c2=t2.c2;
SELECT v1.c1, v1.c2 FROM v1, t2 WHERE v1.c1=t2.c1 AND v1.c2=t2.c2;
EXPLAIN EXTENDED
SELECT t2.c1, t2.c2 FROM (SELECT c1 g, MAX(c2) m FROM t1 GROUP BY c1) t, t2
WHERE t.g=t2.c1 AND t.m=t2.c2;
SELECT t2.c1, t2.c2 FROM (SELECT c1 g, MAX(c2) m FROM t1 GROUP BY c1) t, t2
WHERE t.g=t2.c1 AND t.m=t2.c2;
EXPLAIN EXTENDED
SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1;
SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1;
DROP VIEW v1;
DROP TABLE t1,t2;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # end of 5.3 tests
--echo #