Answers for "postgresql interval"

psql datetime grather than

SELECT *
FROM table
WHERE update_date >= '2013-05-03'::date
AND update_date < ('2013-05-03'::date + '1 day'::interval);

postgresql today - 1 year

select now() - INTERVAL '1 YEAR';

setval in postgres

SELECT setval('tbl_tbl_id_seq', max(tbl_id)) FROM tbl;