Re: is a .sql file transactional
- Date: Thu, 19 Feb 2015 12:05:45 +0100 (CET)
- From: Johan De Meersman <vegivamp@xxxxxxxxx>
- Subject: Re: is a .sql file transactional
----- Original Message -----
> From: "thufir" <hawat.thufir@xxxxxxxxx>
> Subject: is a .sql file transactional
> when you run a .sql file, which modifies a schema, is it transactional?
> Specifically, is it an all-or-nothing proposition? Or, can some commands
> get executed, some fail?
A file is nothing more than just another input method, it has no impact on transactionality or any other parameters.
DDL (schema modification) cannot be done inside a transaction - mysql will automatically commit your open transaction before proceeding, if you have one.
Every DDL statement individually is, however, all-or-nothing - the server (mostly) makes a copy of the table you're operating on, and only switches them out if the change was successful.
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