On Mon, May 19, 2008 at 03:36:39PM -0600, Scott Marlowe wrote: > On Mon, May 19, 2008 at 4:51 AM, jrivero <godsea@xxxxxxxxx> wrote: > > My problem is not that make update query. > > > >> update table set date=(select year || '-' || month || '-' || day || ' 01:00:00' as newdate from table) > > Cast the output of those concatenations to date: > > update table set date=(select (year || '-' || month || '-' || day || ' > 01:00:00')::date as newdate from table) I'd guess the OP doesn't want the sub-query, if he posted the error message we'd know for sure. I'd guess something like: update table set date=(year||'-'||month||'-'||day||'01:00:00')::date; If the "date" column really is of date type, then the final "||'01:00:00'" is somewhat superfluous. Sam
