Re: Return Value of a Function

We will be upgrading soon. Thanks for all the great advice.

On Monday 02 February 2004 01:58 pm, Tom Lane wrote:
> Terry Lee Tucker <terry(at)esc1(dot)com> writes:
> > My version is: 7.2.3-RH
> > Is this my problem?
>
> Probably. I don't recall the exact state of play of functions returning
> rows in 7.2, but certainly Joe Conway has greatly improved it in the
> last couple of releases. You should think about updating to 7.4.
>
> > I'm trying to write a function that will return the last record in a
> > sequence of logs, "last" being defined by an ORDER BY statement
> > containing time stamp criteria in conjuction with other data. The
> > function would always be called by trigger code.
>
> You could try declaring the function to return the specific rowtype of
> the log table, rather than the generic RECORD type. I'm quite certain
> generic RECORD didn't do anything useful in 7.2. But even then, the
> most useful way to call it (namely, a function call in SELECT's FROM
> clause) wasn't there in 7.2.
>
> Probably what you should do as long as you're on 7.2 is just have the
> function determine and return the primary key of the correct log table
> entry, and then SELECT using that key in the calling trigger functions.
>
> regards, tom lane
>
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