How to round to nearest X minutes with PL/pgSQL?

Question

How I can round to nearest X minutes?

Here\'s my attempt:

DECLARE
  _stamp ALIAS FOR $1; -- timestamp
  _nearest ALIAS FOR $2; -- minutes (integer)
         


        

Answer 1

Use the function date_trunc('src', timestamp [value]).

See the documentation: http://www.postgresql.org/docs/9.1/static/functions-datetime.html