Re: type conversion?
| От | Jean-Luc Lachance |
|---|---|
| Тема | Re: type conversion? |
| Дата | |
| Msg-id | 3CB32A0D.D02958A6@nsd.ca обсуждение исходный текст |
| Ответ на | type conversion? (Peter Atkins <Peter.Atkins@nextcard.com>) |
| Список | pgsql-sql |
Try: SELECT SUM(int4(total_hours)) AS hours FROM my_table WHERE flag='$flag'; JLL Peter Atkins wrote: > > All, > > I have a column "total_hours | character varying(5) " and I am unable to > perform the aggrigate function SUM() because of the column type. > Without changing the type is there a way to convert the datatype by using > CAST(), to_char() or something simular? So that I may calculate the SUM(). > > SELECT SUM(total_hours) AS hours FROM my_table WHERE flag='$flag'; > > Thanks! > -p > > ---------------------------(end of broadcast)--------------------------- > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
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