MySQL transaction and triggers?

I thought that single operation of insert is atomic and table is locked while transaction is in progress Either table is locked (MyISAM is used) or records may be locked (InnoDB is used), not both Since you mentioned "transaction", I assume that InnoDB is in use. One of InnoDB advantages is absence of table locks, so nothing will prevent many triggers' bodies to be executed simultaneously and produce the same result.

I thought that single operation of insert is atomic and table is locked while transaction is in progress Either table is locked (MyISAM is used) or records may be locked (InnoDB is used), not both. Since you mentioned "transaction", I assume that InnoDB is in use. One of InnoDB advantages is absence of table locks, so nothing will prevent many triggers' bodies to be executed simultaneously and produce the same result.

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