Vincent De Groote <vdg.encelade@xxxxxxxxx> writes: > I have a composite type with 2 fields. I would like to check that one > of these fields exists in another table. > Foreign keys on a composite field does not seem to be supported. Works for me, in 8.4 and up. Whether it's a good idea is a different issue (I think it'll be pretty inefficient, compared to a multicolumn primary/foreign key on native datatypes), but it works. regression=# create type cx as (r float8, i float8); CREATE TYPE regression=# create table p (id cx primary key); NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "p_pkey" for table "p" CREATE TABLE regression=# create table s (c cx references p); CREATE TABLE regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general