Hello, > the join column, lsid, is a poor choice for a join column as it is a > long varchar value (avg length 101 characters) that us only gets > unique way out on the right hand side. Would a join on subtring on the 'way out on the right hand side' (did you mean 'rightmost characters' or 'only when we take almost all the 101 characters'?) together with a function based index help? Regards, Jayadevan DISCLAIMER: "The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect." -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
