Re: [GENERAL] many row updates
Uroš Gruber wrote: Hi! I have table with row named rank and some other rows. I have about 900.000 rows in table and I need to update all rows with the same value of rank, so I run update table set rank = 1; The only problem is speed. I'm waiting about 30 minutes and it's still running. My system is pg8.1 with one SATA HD and P43GHz And is your disk very busy? Has this table been updated a lot without being vacuumed regularly? -- Richard Huxton Archonet Ltd ---(end of broadcast)--- TIP 1: 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
[GENERAL] many row updates
Hi! I have table with row named rank and some other rows. I have about 900.000 rows in table and I need to update all rows with the same value of rank, so I run update table set rank = 1; The only problem is speed. I'm waiting about 30 minutes and it's still running. My system is pg8.1 with one SATA HD and P43GHz I think there must be some configuration option or something to be update so slow. I also remove index from this row but doesn't help. Maybe somone have an idea what parameter to tune or what can I check to see why the update is so slow. regards Uros ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
