Achmad Nizar Hidayanto wrote: > The two records are identical. But if i display the ctid, the two > records differ as they > have different ctid (suppose i display the ctid in the first column): > R1: 8888, 1001, 1, 02-25-2008, Present, 1 > R2: 9999, 1001, 1, 02-25-2008, Present, 1 This would be a bug. Please post the unmodified output of select ctid, xmin, xmax, cmin, cmax, id_absensi, id_user, tanggal from absensi The ctid column must differ because it is the physical address of the tuple. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general