Should be more efficient to do something like: SELECT Main_ID FROM Table1 WHERE Source1_Name = 'name' UNION SELECT Main_ID FROM Table2 WHERE Source2_Name = 'name' UNION SELECT Main_ID FROM Table3 WHERE Source3_Name = 'name'
-----Original Message----- From: João Cândido de Souza Neto [mailto:j...@consultorweb.cnt.br] Sent: Monday, July 27, 2009 1:09 PM To: mysql@lists.mysql.com Subject: Re: SELECT query question select * from MainTable MT left join Table1 T1 on MT.Main_ID = T1.MainID left join Table2 T2 on MT.Main_ID = T2.MainID left join Table3 T3 on MT.Main_ID = T3.MainID where T1.Source1_Name = "anything" or T2.Source2_Name = "anything" or T3.Source3_Name = "anything" Not tested. -- João Cândido de Souza Neto SIENS SOLUÇÕES EM GESTÃO DE NEGÓCIOS Fone: (0XX41) 3033-3636 - JS www.siens.com.br ""Rytsareva, Inna (I)"" <irytsar...@dow.com> escreveu na mensagem news:3c9bdf0e91897443ad3c8b34ca8bdca80218f...@usmdlmdowx028.dow.com... Hello. I have 4 tables: MainTable (Main_ID, Main_Name) Table1 (Source1_ID, Source1_Name, Main_ID) Table2 (Source2_ID, Source2_Name, Main_ID) Table3 (Source3_ID, Source3_Name, Main_ID) And a search box. A user can type any names from Source1_Name or Source2_Name or Source3_Name. I need to get Main_ID How to make it? Thanks, Inna -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=gto...@ffn.com The information contained in this transmission may contain privileged and confidential information. It is intended only for the use of the person(s) named above. If you are not the intended recipient, you are hereby notified that any review, dissemination, distribution or duplication of this communication is strictly prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
