mysql> SELECT entry FROM OBDB.creature_names,OBDB2.creature_names WHERE OBDB.creature_names.entry != OBDB2.creature_names.entry; ERROR 1052 (23000): Column 'entry' in field list is ambiguous mysql> mysql> SELECT OBDB.creature_names.entry FROM OBDB.creature_names,OBDB2.creature_names WHERE OBDB.creature_names.entry != OBDB2.creature_names.entry; mysql(26878) malloc: *** vm_allocate(size=3895296) failed (error code=3) mysql(26878) malloc: *** error: can't allocate region mysql(26878) malloc: *** set a breakpoint in szone_error to debug mysql: Out of memory (Needed 3894228 bytes) ERROR 2008 (HY000): MySQL client ran out of memory mysql>