SQL

postgresql between month

WHERE date >= DATE '2012-01-01' 
  AND date < DATE ('2013-04-01' + INTERVAL '1 MONTH')

postgresql between month

CREATE OR REPLACE FUNCTION public.fn_getlastofmonth (
  date
)
RETURNS date AS
$body$
begin
    return (to_char(($1 + interval '1 month'),'YYYY-MM') || '-01')::date - 1;
end;
$body$
LANGUAGE 'plpgsql'
VOLATILE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;

postgresql between month

CREATE OR REPLACE FUNCTION public.fn_getlastofmonth (
  date
)
RETURNS date AS
$body$
begin
    return (to_char(($1 + interval '1 month'),'YYYY-MM') || '-01')::date - 1;
end;
$body$
LANGUAGE 'plpgsql'
VOLATILE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;
--------------------------------------------------------------------------------
WHERE date >= '2012-01-01' 
  AND date < fn_getlastofmonth('2013-04-01') 

postgresql between month

WHERE date >= DATE '2012-01-01' 
  AND date < DATE '2013-05-01'      --- first date of the next month