Hi, I have a question about the UNIQUE constraint. The documentation describes this example:
CREATE TABLE example ( a integer, b integer, c integer, UNIQUE (a, c) ); But it is not clean to me. Does the above example mean that the list of pairs must be unique or is it only a short version for this constraint: CREATE TABLE example ( a integer UNIQUE, b integer, c integer UNIQUE ); Does the following table fullfill the UNIQUE clause of the example from the Postgres documentation? a b c ----- 1 2 3 1 1 1 cu Sascha -- secunet Security Networks AG, Im Teelbruch 116, 45219 Essen Tel: +49-2054-123-408 Fax: +49-2054-123-123 PGP: FBE2 A49B 6526 C1B4 7F10 24E4 5004 7C27 6E9A 9698 ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings