From: Andreas <maps.on@gmx.net>
To: pgsql-sql@postgresql.org
Subject: problem with selecting from a function
Date: Tue, 21 Jun 2011 03:55:50 +0200
Message-ID: <4DFFFA26.6010003@gmx.net> (raw)
Hi,
I've got a table with a couple of objects.
Primary key object_id.
There is a function that fetches some values from another table that
relate to an object_id.
Like fctX ( 7 ) --> set of typX ... ( 14, 'bla' ), ( 17, 'blu' ), (
21, 'ble' ), ...
The result of the function can have 0 or more lines of a defined
result-type typX.
Those resulting numbers are not object_ids.
Now I'd need a SELECT that lists all function results of all object_ids.
Like:
...
6, ...
7, 14, 'bla'
7, 17, 'blu'
7, 21, 'ble'
8, ...
Actually it was enough to get just the numerical column of the function
result.
I tried
select object_id, fctX (object_id) from objects;
Then I get:
7, (14, 'bla')
7, (17, 'blu')
7, (21, 'ble') <--- round brackets
This looks like an array but how can I split it up to columns or at
least extract the number-column?
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To: pgsql-sql@postgresql.org
Cc: maps.on@gmx.net
Subject: Re: problem with selecting from a function
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