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SQL Select problem

Author

Topic

liuyang
Starting Member

6 Posts

Posted - 2003-01-29 : 22:54:47

Dear experts:
i have a table call productpricehistory which consists three columns
productID,PublishDate,Price
there are many records with same productID but different PublishDate
so how to get a list with the latest publishdate for each product
thank you

robvolk
Most Valuable Yak

15732 Posts

Posted - 2003-01-29 : 23:05:17

SELECT ProductID, Max(PublishDate) FROM ProductPriceHistory
GROUP BY ProductID

liuyang
Starting Member

6 Posts

Posted - 2003-01-29 : 23:13:30

Thanks but if i also want to get the latest price for each product then what should i do?
there is an error of:
Column 'Price' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
when i add price in

nr
SQLTeam MVY

12543 Posts

Posted - 2003-01-29 : 23:13:52

You probably want the price as well?

SELECT ProductID, PublishDate, Price
FROM ProductPriceHistory t1
where t1.PublishDate = (select max(t2.PublishDate) from ProductPriceHistory t2 where t2.ProductID = t1.ProductID)

==========================================
Cursors are useful if you don't know sql.
DTS can be used in a similar way.
Beer is not cold and it isn't fizzy.

liuyang
Starting Member

6 Posts

Posted - 2003-01-29 : 23:20:46

Thank you very much

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