Fellow postgresers: According to the web site the following syntax is permitted: PRIMARY KEY clause SQL92 specifies some additional capabilities for PRIMARY KEY: Table Constraint definition: [ CONSTRAINT name ] PRIMARY KEY ( column [, ...] ) [ {INITIALLY DEFERRED | INITIALLY IMMEDIATE} ] [ [ NOT ] DEFERRABLE ] My snytax is: constraint base_pos_pkey primary key (base, pos) initially deferred Postgres complained about the "initially" Are deferrable primary keys not supported by Postgres? Thanks! Merrill