On 12/13/2012 5:32 AM, seil...@so-net.net.tw wrote:
I am trying to implement a mechanism that prohibits the last row of a data set from being deleted.CREATE TABLE t1 (c1 INTEGER,c2 INTEGER, PRIMARY KEY (c1,c2)); INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
Which row is the last row? relations are sets, not ordered lists. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
