PostgreSQL: Select data with a like on timestamp field

Question

I am trying to select data from a table, using a \"like\" on date field \"date_checked\" (timestamp). But I have this error :

SQLSTATE[42883]: Undefined func         


        

Answer 1

Perhaps the date_trunc function would be more to your liking:

... WHERE date_trunc('month', my_table.date_checker) = '2011-01-01'

You can also put an index on that expression, if needed.