Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id h8Q3kAl11237 for ; Thu, 25 Sep 2003 22:46:10 -0500 X-ClientAddr: 66.27.56.213 Received: from www2.fatcity.com (rrcs-west-66-27-56-213.biz.rr.com [66.27.56.213]) by ensim.rackshack.net (8.11.6/8.11.6) with ESMTP id h8Q3kAc11232 for ; Thu, 25 Sep 2003 22:46:10 -0500 Received: (from root@localhost) by www2.fatcity.com (8.11.6/8.11.6) id h8Q17Gx05260 for oracle-l@orafaq.net; Thu, 25 Sep 2003 18:07:16 -0700 Received: by fatcity.com (05-Jun-2003/v1.0g-b73/bab) via fatcity.com id 005D1168; Thu, 25 Sep 2003 18:04:40 -0800 Message-ID: Date: Thu, 25 Sep 2003 18:04:40 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: Vladimir Begun Sender: ml-errors@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: Vladimir Begun Subject: Re: equivalent for isdate, isnumeric Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 73; ListGuru (c) 1996-2003 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Tanel Poder wrote: > Boolean is a datatype existing and usable in Oracle. > Deterministic is an Oracle way to tell a function is deterministic, i.e. > always returning the same result on the same input. Required for FBIs for > example. > http://tahiti.oracle.com Could you please kindly provide an example of its usage in SQL. Please create an FBI using the original function below (as is, no modifications or wrappers). It would be really intersting how "deterministic" functionality would work for a PL/SQL function that returns BOOLEAN datatype. Thank you! -- Vladimir Begun The statements and opinions expressed here are my own and do not necessarily represent those of Oracle Corporation. >>boolean is not SQL datatype and it's unclear what "deterministic" >>means here. >> >>Mladen Gogala wrote: >> >>>create or replace function >>>isnumeric(str varchar2) return boolean deterministic >>>as >>> num number:=0; >>>begin >>> num:=to_number(str); >>> return(true); >>>exception >>> when others then >>>return(false); >>>end; >>>/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Vladimir Begun INET: Vladimir.Begun@oracle.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).