RE: Enhancement Request

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От Hajek, Nick
Тема RE: Enhancement Request
Дата
Msg-id CH0PR02MB81063B5272D9663465788281E57C2@CH0PR02MB8106.namprd02.prod.outlook.com
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Ответ на Re: Enhancement Request  (M Sarwar <sarwarmd02@outlook.com>)
Ответы Re: Enhancement Request  (M Sarwar <sarwarmd02@outlook.com>)
Re: Enhancement Request  (Ron Johnson <ronljohnsonjr@gmail.com>)
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// Are you confirming that DELETE FROM - LIMIT is working?

 

No, I don’t believe you can use limit in the delete itself but you can use it in a subselect and accomplish the same thing as shown in the example below.

 

 

// It would be nice if the DELETE FROM supported LIMIT. I can already feel the dislike for this post coming back in my direction.

 

// I have had numerous times over the years where I need to delete a lot of rows from a table but because each row is linked to so many other tables it will cause // a problem in performance if I don’t limit the size of the deletion.

 

I use a query like this to accomplish a limited deletion –

 

Delete from table1 where table1.id in (select table1.id from table1 limit yourlimitnumber)

 

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