On Mon, May 19, 2008 at 4:51 AM, jrivero <godsea@xxxxxxxxx> wrote: > Hi, i need help for a query. I have three fields, year, month and day > into table and need join and update another field named date on same > table. > > My problem is not that make update query. > > With this query have the value of the update: >> select year || '-' || month || '-' || day || ' 01:00:00' as newdate from table > > but this another query not have correct syntax... >> 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) Does that help?
