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MDEV-8613 Full table scan for WHERE indexed_varchar_column <=> 'bad-character'

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This commit is contained in:
Alexander Barkov
2015-08-13 16:41:02 +04:00
parent 60985e5375
commit 0750b2df37
3 changed files with 22 additions and 1 deletions
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9
mysql-test/t/range.test
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@ -1795,6 +1795,15 @@ SELECT * FROM t1 WHERE 10<>a;
DROP TABLE t1;
--echo #
--echo # MDEV-8613 Full table scan for WHERE indexed_varchar_column <=> 'bad-character'
--echo #
SET NAMES utf8;
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8, KEY(a)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('a'),('b'),('c'),('d'),('e');
EXPLAIN SELECT * FROM t1 WHERE a<=>'😎';
DROP TABLE t1;
--echo #
--echo # End of 10.1 tests
--echo #