count number of rows to be affected before update in trigger

Posted by tomaszsobczak on Stack Overflow See other posts from Stack Overflow or by tomaszsobczak
Published on 2010-04-01T13:41:26Z Indexed on 2010/04/01 13:53 UTC
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postgresql

Hi,

I want to know number of rows that will be affected by UPDATE query in BEFORE per statement trigger . Is that possible?

The problem is that i want to allow only queries that will update up to 4 rows. If affected rows count is 5 or more i want to raise error.

I don't want to do this in code because i need this check on db level. Is this at all possible?

Thanks in advance for any clues on that

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count number of rows to be affected before update in trigger - Developer IT

count number of rows to be affected before update in trigger

postgresql

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