Hi I sent this message to the SQL-related mailing but nobody has replied for three days now. Can anyone help? Kostas ---------- Forwarded message ---------- Date: Sat, 18 Jul 1998 14:14:28 +0100 (BST) From: Konstantinos Vassiliadis <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Hello, I have the following two tables create table protein (structures setof pdb); create table pdb (identifier text); That is, I express the fact that a protein has many pdb's as a nested relation. I then try to insert values into a protein insert into protein values (pdb('..'),pdb('..')); but it does not work. How can I insert values? Does Postgres support this feature? Thanks Kostas Vassiliadis NB I also tried create table temp (numbers setof int); and tried to insert but couldn't.