I sometime used this kind of aproach when I dinamically build the WHERE expression. Something like this:
where_condition := ' WHERE 1 = 1 ' LOOP where_condition := ' AND ' || new_condition END LOOP The point is if there are any condition to add the first condition is always true so it won't affect the final where_condition. The same is when there aren't any condition to add. And in some cases there are really no conditions to add, thus your final query will have only a condition like ' WHERE 1 = 1 '. If you need to connect all the intermediate condition by OR operator probably you will use the WHERE 1 = 0. I hope I'll make my point clear enough and of course is any related to your case. Maybe if you show us the entire query, someone can tell you more about it. Regards Iulian Ilies -----Original Message----- Sent: Friday, October 26, 2001 2:20 AM To: Multiple recipients of list ORACLE-L ********************************************************************** This email has been tested for viruses by F-Secure Antivirus administered by IT Network Department. ********************************************************************** I was monitoring a load test of my company's new application when I came across something interesting. One of the more monstrous queries had the following as part of its WHERE clause: 'AND 1 = 1' Has anyone seen this used before? What is it supposed to achieve? __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ed Bittel INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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). ****************************************************************************** The information contained in this communication is confidential and may be legally privileged. It is intended solely for the use of the individual or entity to whom it is addressed and others authorised to receive it. If you are not the intended recipient you are hereby notified that any disclosure, copying, distribution or taking action in reliance of the contents of this information is strictly prohibited and may be unlawful. Mobil Rom is neither liable for the proper, complete transmission of the information contained in this communication nor any delay in its receipt. ****************************************************************************** -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
