Thanks for the reply. I tested the issue and found out that the row has moved to another page, which means that the index was rebuilt.
Now the question is about the cost of such rebuild: is it the same as update with different value or update with the same value costs less.
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Vick Khera Sent: Tuesday, April 05, 2011 8:46 PM To: pgsql-general@postgresql.org Subject: Re: [GENERAL] Is index rebuilt upon updating table with the same values as already existing in the table?