On 2013-03-06 09:11:38 +0530, abhinav batra wrote:
> Hey
> I want to work towards the follwing feature in TODO list:
> Prevent index uniqueness checks when UPDATE does not modify the
> columnUniqueness
> (index) checks are done when updating a column even if the column is not
> modified by the UPDATE. However, HOT already short-circuits this in common
> cases, so more work might not be helpful.
I'd be interested in something slightly related that is doing HOT on a
per-index basis. Currently we don't do hot if any index is updated even
though quite possibly most of the indexes don't change.
I think that might result in some quite nice speedups...
Greetings,
Andres Freund
-- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services
