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MDEV-25433: SKIP LOCKED should imply NOWAIT

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This also means SKIP LOCKED is compatible with the NOWAIT/
WAIT n syntax consisten with the MySQL-8.0 implementation.
This commit is contained in:
Daniel Black
2021-04-18 09:31:21 +10:00
parent bfedf1eb4b
commit af418bb9ef
5 changed files with 21 additions and 24 deletions
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4
mysql-test/main/locking_clause.test
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@ -65,6 +65,10 @@ SELECT * FROM t1 FOR SHARE WAIT NOWAIT;
--error ER_PARSE_ERROR
SELECT * FROM t1 FOR SHARE WAIT SKIP LOCKED;
--error ER_PARSE_ERROR
SELECT * FROM t1 FOR SHARE WAIT 3 SKIP LOCKED;
--error ER_PARSE_ERROR
SELECT * FROM t1 FOR SHARE NOWAIT SKIP LOCKED;
--error ER_PARSE_ERROR
SELECT 1 FOR UPDATE UNION SELECT 2;
--error ER_PARSE_ERROR
SELECT 1 LOCK IN SHARE MODE UNION SELECT 2;