Re: Do cast affects index usage?

"Anibal David Acosta" <aa@devshock.com> writes:
> I have a table with a column of type timestamp with time zone, this column
> has an index

> If I do a select like this
> select * from mytable where cast(my_date as timestamp without time zone) >
> '2012-10-12 20:00:00'
> this query will use the index over the my_date column?

No.  The cast seems rather pointless though ...

            regards, tom lane