Re: max (timestamp,timestamp)

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От A. Kretschmer
Тема Re: max (timestamp,timestamp)
Дата
Msg-id 20061113140828.GD14281@a-kretschmer.de
обсуждение исходный текст
Ответ на max (timestamp,timestamp)  (T E Schmitz <mailreg@numerixtechnology.de>)
Ответы Re: max (timestamp,timestamp)
Список pgsql-sql
am  Mon, dem 13.11.2006, um 13:46:00 +0000 mailte T E Schmitz folgendes:
> I tried the following query but the query fails as
> "function max (timestamp w. timezone,timestamp w. timezone) does not exist"
> 
> SELECT id,
> 
> MAX(last_updated,
> (SELECT MAX (last_updated) FROM  product_category_member WHERE
> product_category_member.id =  product_category.id))
> 
> FROM product_category
> 
> 
> product_category.last_updated and product_category_member.last_updated
> are timestamps with timezone.

Really, there are no such function. Perhaps this can help you:

SELECT id, MAX(product_category.last_updated),
MAX(product_category_member.last_updated) from product_category,
product_category_member WHERE product_category_member.id =
product_category.id;

**untested**



Your fault is that there are no max(timestamp,timestamp) - funktion and
i think, you should read more about JOINs.


Andreas
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