Обсуждение: Using triggers with non-C functions

Now that I know that triggers can call non-C functions, I would like to
know how non-C functions access information about the triggered row.

I see plpgsql has an interface to the trigger information.  Do SQL
functions us OLD/NEW to reference that information, like they do in
rules?

The trigger programmers guide page says PROCEDURE is a C function, so I
will need to correct that:
Procedure     The procedure name is the C function called. 


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On Wed, 17 May 2000, Bruce Momjian wrote:

Well, I know that with PL/pgSQL you use NEW and OLD, but I'm not
sure how this works with other languages.

> Now that I know that triggers can call non-C functions, I would like to
> know how non-C functions access information about the triggered row.
> 
> I see plpgsql has an interface to the trigger information.  Do SQL
> functions us OLD/NEW to reference that information, like they do in
> rules?
> 
> The trigger programmers guide page says PROCEDURE is a C function, so I
> will need to correct that:
> 
>     Procedure
>     
>          The procedure name is the C function called. 
> 
> 
> 

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