How to write query to find maximum value of table

Question

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SQL

id	User	Bid_ID	Amount
id1	manu	bid67	3000
id2	vinu	bid68	4000
id3	anu	bid67	6000
id4	aju	bid68	5500
id5	amal	bid80	3500
id6	vinu	bid80	8000

this is my table i want to find details who raise the maximum Amount of each Bid_ID
my Desired output is of above table is

SQL

id	User	Bid_ID	Amount
id3	anu	bid67	6000
id4	aju	bid68	5500
id6	vinu	bid80	8000

how can i write query for this ?

but when I write query

SQL

SELECT     bid_ID, user, MAX(Amount) AS Amount
FROM         dbo.tbl_BidOffer
GROUP BY bid_ID, user

i got wrong result...

Posted 13-May-13 16:02pm

manuthebos

Updated 13-May-13 16:17pm

v2

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Sergey Alexandrovich Kryukov 13-May-13 22:06pm

What prevents you from simply reading the SQL reference?
—SA

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_Damian S_ · Accepted Answer · 2013-05-13T16:27:00

Solution 1

You get the wrong result because your query will return the maximum bid for each user and Bid_ID combination. You will need to restructure your query so that you can find the maximum bid for an individual Bid_ID, then link it back to get the user details.

Posted 13-May-13 16:27pm

_Damian S_