A SELECT ... FOR UPDATE reads the latest available data, setting exclusive locks on each row it reads. Thus, it sets the same locks a searched ... ... <看更多>

A query is always in a transaction even if you don't start it explicitly. SELECT FOR UPDATE acquires an exclusive lock on rows it matches. ... <看更多>

SELECT FOR UPDATE 쿼리는 가정 먼저 LOCK을 획득한 SESSION의 SELECT 된 ROW ... mysql> START TRANSACTION; Query OK, 0 rows affected (0.00 sec) ... ... <看更多>

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