Gordon wrote: > At first I thought INSERT INTO table_name SELECT * from table_name > where primary_key = unique_value would do it, but that would obviously > violate the primary key uniqueness constraint. I'm wondering if > there's a way to do this where I only grab the data to be copied and > let the database work out the new primary key itself. Well, try INSERT INTO table_name SELECT col1, col2, ... FROM table_name WHERE primary_key = unique_value where the colX list excludes the primary key columns. Perhaps add DEFAULT specification for those so that they are generated from a sequence or whatever default generator you have. -- Alvaro Herrera Valdivia, Chile ICBM: S 39º 49' 18.1", W 73º 13' 56.4" "A wizard is never late, Frodo Baggins, nor is he early. He arrives precisely when he means to." (Gandalf, en LoTR FoTR) ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq