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Bug#56716 InnoDB locks a record gap without locking the table

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row_search_for_mysql(): Acquire an intention lock on the table
before locking the first record gap.
This commit is contained in:
Marko Mäkelä
2010-10-04 13:05:21 +03:00
parent 282eee8879
commit 678bc90ed8
3 changed files with 50 additions and 36 deletions
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4
mysql-test/suite/innodb/r/innodb_bug56716.result Normal file
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CREATE TABLE bug56716 (a INT PRIMARY KEY,b INT,c INT,INDEX(b)) ENGINE=InnoDB;
SELECT * FROM bug56716 WHERE b<=42 ORDER BY b DESC FOR UPDATE;
a b c
DROP TABLE bug56716;