I have a requirement. Created table called a. CREATE TABLE a(no int primary key,name text); Need to create reference key for no field of array. which is belongs to b table. The postgresql is not allowing to create a reference for incompatible type. CREATE TABLE d(no int[] references a,name text); ERROR: foreign key constraint "d_no_fkey" cannot be implemented DETAIL: Key columns "no" and "no" are of incompatible types: integer[] and integer. Is there any solution to setting foreign key for an array. NOTE: Kindly ensure that I don't want to change the int to int[] in a table. -- View this message in context: http://postgresql.1045698.n5.nabble.com/setting-foreigh-key-for-an-array-tp3384263p3384263.html Sent from the PostgreSQL - admin mailing list archive at Nabble.com. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin