Re: query failed , don't know why

> UPDATE members m,payments p SET m.status = 2
>  WHERE p.paydate > 'now'::datetime - '1 month'::timespan
>   and p.productid = 'xxxxxxx' and m.gid = p.gid

Try

UPDATE members set status = 2FROM payments pWHERE p.paydate > timestamp 'now' - interval '1 month' AND p.productid =
'xxxxxxx'and members.gid = p.gid;