Re: plpgsql: Bush becomes a null,

Thank you very much. Also thanks for Josh.

I have to say that I'm really impressed with the speed of this list and
dedication of the people who develop postgres.

Twice I have asked a question on this list and twice I've got absolutely
correct answer in less than one day - even when both of my questions have
been kind of RTFM questions, had I just thought them out!

The only two places I've got answers so fast have been Datavision and
Inetd-software.

> Mauri Sahlberg <Mauri.Sahlberg@claymountain.com> writes:
>> If the following is executed in context, where the dynamic query returns
>> data with every iteration everythin goes fine. If the the dynamic query
>> returns nothing - bush becomes null and everything fails. I do not
>> undestand why bush becomes null when the query returns nothing.
>
> If "latest" is null then the result of the series of concatenations is
> also null.  Perhaps what you really want is to assign to "latest" inside
> the inner FOR-loop.
>
>             regards, tom lane
>
>