Обсуждение: (non)zero function
Hi folks, is there an function returning true if the argument is null or zero (just to make some queries more concise). Of course its trivial to implement as SQL function, but if postgresql already provides such a function, I would prefer using it. cu -- ---------------------------------------------------------------------Enrico Weigelt == metux IT service phone: +49 36207 519931 www: http://www.metux.de/ fax: +49 36207 519932 email: contact@metux.decellphone: +49 174 7066481 ----------------------------------------------------------------------- DSL ab 0 Euro. -- statische IP -- UUCP -- Hosting-- Webshops -- ---------------------------------------------------------------------
On Sun, Mar 27, 2005 at 17:58:07 +0200, Enrico Weigelt <weigelt@metux.de> wrote: > > Hi folks, > > > is there an function returning true if the argument is null or > zero (just to make some queries more concise). Of course its > trivial to implement as SQL function, but if postgresql already > provides such a function, I would prefer using it. No.
Hi, On Sun, 27 Mar 2005, Enrico Weigelt wrote: > > Hi folks, > > > is there an function returning true if the argument is null or > zero (just to make some queries more concise). Of course its > trivial to implement as SQL function, but if postgresql already > provides such a function, I would prefer using it. Lookup the documentation on COALESCE() http://www.postgresql.org/docs/current/static/functions-conditional.html 9.13.2. COALESCE Greetings Christian -- Christian Kratzer ck@cksoft.de CK Software GmbH http://www.cksoft.de/ Phone: +49 7452 889 135 Fax: +49 7452 889 136