Hi, I have 3 tables foo foo_loading_source1 foo_loading_source2 which is something like create table foo (a int, b int, c int) create table foo_loading_source1 (a int, b int, c int) create table foo_loading_source2 (a int, b int, c int) Is there a way which can be made easier to keep these 3 tables DDL in sync? the loading_sourceX tables are just a temporary-in-transit table for data \copy'ied into the DB before being inserted into the main foo table. Currently, each time I add a new column to foo, I have to "remember" to add the same to the other 2 table. Can I use inheritance? References? or will I have to create a procedural function such that it will add the same ddl to all 3 tables each time a new column is defined? ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster