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MySQL SELECT ... FOR SHARE 会不会分配事务id ? #2682
kaiser20106
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A transaction ID is only needed for a transaction that might perform write operations or locking reads such as SELECT ... FOR UPDATE.
加了for share 跟普通select trx_id一样，如果说不分配事务id，那上面的mysql原文怎么理解，locking reads包括for share和 FOR UPDATE啊
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