Hello there! [Please Cc: me in followups.] I tried the following: CREATE TABLE a ( int4 id ); CREATE TABLE b ( int4 id CHECK (id = ANY(SELECT a.id FROM a)) ); Tables are created ok, checking with '\d table' confirms it. But when I try to insert into table b, e.g.: INSERT INTO b (id) VALUES (0); I get: ERROR: ExecEvalExpr: unknown expression type 108 Of course, the tuple is not inserted. As quick dig of code showed, type 108 is T_SubLink which is created for ANY() subselect, and ExecEvalExpr() function does not handle this type of node. Is it intentional or a bug? I use 7.0.3, but 7.1.2 code looks pretty the same in ExecEvalExpr(). The platform is FreeBSD 4.3-R. TIA for responses, Alexey. -- -------------------------------------------------+--------------------------- Yes. We have good news! | Regards, Alexey V. Neyman Well, that is to say, we have no news. | mailto: [EMAIL PROTECTED] ----------------------------------( Pkunk, SC2 )-+--------------------------- ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly