On Tuesday 17 February 2004 20:05, [EMAIL PROTECTED] wrote: > I should probably be punished for even asking this question, but a > simplified version of what I want is this... > > I have 2 tables: > floorplans > floorplan_id | description > -------------------------- > 2240 | test floorplan > > and a table elevations > floorplan_id | elevation > ------------------------ > 2240 | A > 2240 | B > 2240 | C > > I want to perform a query that returns this result set: > baseplan_id | elevations > 2240 | A,B,C
You've got two options here: 1. Write a set-returning function in plpgsql (or whatever) to do your looping and build the CSV value. Perhaps look in the contrib/ folder too - might be something in the tablefunc section. 2. Write a custom aggregate function (like sum()) to do the concatenation. This is easy to do, but the order your ABC get processed in is undefined. You can find info on both in the archives, probably with examples. Also - check techdocs. -- Richard Huxton Archonet Ltd ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
