How to convert postgres timestamp to date: yyyy-mm-dd

Hi All,

I'm a novice but learning quickly and I'm stumped on how to do this.

I need to convert postgres timestamp to date format yyyy-mm-dd in a
sql statement.
pt.created_date below is timestamp format

i.e ... WHERE pt.created_date >=  '2008-01-21'

Any help would be greatly appreciated.

Thanks, Case