Re: Foreign Key in MySQL (was: Newbie Question: Convert SELECT to DEL ETE)
| From: | Heikki Tuuri | Date: | Thu, 18 Oct 2001 20:35:28 +0000 |
| Subject: | Re: Foreign Key in MySQL (was: Newbie Question: Convert SELECT to DEL ETE) | ||
| References: | 1 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-13509@lists.php.net to get a copy of this message | ||
Hi!
MySQL-3.23.44 and MySQL-4.0.0 support foreign keys
through transactional InnoDB type tables.
See http://www.innodb.com for more info.
Regards,
Heikki
Innobase Oy
Rita Mikusch wrote in message
<10C5C8152BD5D31181AC006008AD5F416886AD@NEWCA2>...
>Foreign Keys? No such luck! You need to check the for the child records,
>then delete them if they exist.
>
>rita.
>
>-----Original Message-----
>From: Rick Emery [mailto:remery@excel.com]
>Sent: Wednesday, October 17, 2001 6:09 AM
>To: php-db@lists.php.net
>Subject: Foreign Key in MySQL (was: Newbie Question: Convert SELECT to
>DEL ETE)
>
>
>MySQL also does not support FOREIGN keys. The term "FOREIGN KEY" is
>accepted in the syntax, but it is ignored.
>
>-----Original Message-----
>From: Ted Rolle [mailto:ted@acacia.datacomm.com]
>Sent: Tuesday, October 16, 2001 6:37 PM
>To: Sheila Myers
>Cc: php-db@lists.php.net
>Subject: Re: [PHP-DB] Newbie Question: Convert SELECT to DELETE
>statement in mysql
>
>
>MySQL doesn't have a CASCADE option AFAIK; PostgreSQL does.B
>
>On Tue, 16 Oct 2001, Sheila Myers wrote:
>
>> I haven't done a lot of mySql, but does it have a 'cascade' option when
>> you're creating tables? This allows you to define a foreign key
>> relationship, so that when you delete your master record, the associated
>> child records are also deleted.
>>
>> Sheila
>>
>
>
>
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