Обсуждение: Using COALESCE nside function
Is it possible to use COALESCE function inside a function as a cursor variable? test cursor (myvar varchar) for (coalesce(SELECT...<snip>,0)); I get a syntax error when trying this...ERROR: syntax error at or near "COALESCE"...is there a way to do this? -- Robert
am Mon, dem 23.07.2007, um 13:58:22 -0400 mailte Robert Fitzpatrick folgendes: > Is it possible to use COALESCE function inside a function as a cursor > variable? Yes, why not? > > test cursor (myvar varchar) for > (coalesce(SELECT...<snip>,0)); I guess: wrong syntax. Try instead select coalesce(coll,0) from ... Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
On Jul 23, 2007, at 12:58 , Robert Fitzpatrick wrote: > Is it possible to use COALESCE function inside a function as a cursor > variable? > > test cursor (myvar varchar) for > (coalesce(SELECT...<snip>,0)); > > I get a syntax error when trying this...ERROR: syntax error at or > near > "COALESCE"...is there a way to do this? I don't know if there's a way to handle this using COALESCE, but could you do it using something like SELECT INTO cursor_pos -- rest of query IF NOT FOUND THEN cursor_pos := 0; END IF; Note I haven't used cursors before, and I'm assuming you're using PL/ pgSQL. Michael Glaesemann grzm seespotcode net