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MDEV-8785 Wrong results for EXPLAIN EXTENDED...WHERE NULLIF(latin1_col, _utf8'a' COLLATE utf8_bin) IS NOT NULL

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This commit is contained in:
Alexander Barkov
2015-09-10 15:01:44 +04:00
parent 4278d6d402
commit 8e553c455c
7 changed files with 132 additions and 7 deletions
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8
mysql-test/t/explain_json.test
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@@ -286,3 +286,11 @@ CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET latin1);
INSERT INTO t1 VALUES ('a'),('b');
EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE a=_latin1 0xDF;
DROP TABLE t1;
--echo #
--echo # MDEV-8785 Wrong results for EXPLAIN EXTENDED...WHERE NULLIF(latin1_col, _utf8'a' COLLATE utf8_bin) IS NOT NULL
--echo #
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET latin1);
INSERT INTO t1 VALUES ('a'),('A');
EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE NULLIF(a,_utf8'a' COLLATE utf8_bin);
DROP TABLE t1;