> I'm trying to update existing records in one table so that value of a > column winds up matching the value of a column in a second table, based on > a match in a second column in each table. > > I'm not sure if I'm taking the wrong approach on this, of if I'm missing > something simple in the SQL syntax (like this being illegal), but I'd > appreciate any feedback on why MySQL is returning the "Unknown table" error > when the table does indeed exist (see output below). I can do this > manually (v. small number of records involved) but for cases where doing it > by hand would be impractical, it would be helpful to be able to do this > without writing a script. > > Thanks, > > Ted > > mysql> UPDATE dp_populate_vals > -> SET dp_populate_vals.tbl_id=dp_populate_tables.tbl_id > -> WHERE dp_populate_tables.tgt_tbl=dp_populate_vals.tgt_tbl;
I think: update dg_populate_vals v set v.tbl_id = (select t.tbl_id from dp_populate_tables t where t.tgt_tlb = v.tgt_table) With regards, Martijn Tonies Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL Server. Upscene Productions http://www.upscene.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
