Sql server MAX value row get

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CustomerID   StartWeight   EndWeight    Charges    AddWeight    AddCharges
1              0.00          0.50        50          0            0
1              0.60          1.00        100         1            70
2              0.00          0.50        60          0            0
2              0.60          1.00        110         1            80
3              0.00          1.00        120         1            100

select * from table where CustomerID=1
this show the result of first two line.

What I have tried:

select * from table where CustomerAccountID=1 and EndWeight=(select MAX(EndWeight) from table)

This show null value while i want to show the second row

Posted 30-Jan-18 5:23am

Member 10028394

Updated 30-Jan-18 5:32am

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David_Wimbley 30-Jan-18 11:28am

EDIT: I missed your customer Id condition

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David_Wimbley · Answer 1 · 2018-01-30T05:30:00

Not entirely sure what the problem is with your query/why you are getting incorrect data, i mocked up your data set and the query provides expected results.

SQL

DECLARE @CpMaxValueRow TABLE (
	CustomerId INT NULL,
	EndWeight FLOAT NULL
);

INSERT INTO @CpMaxValueRow
        ( CustomerId, EndWeight )
VALUES  ( 1, -- CustomerId - int
          0.5  -- EndWeight - float
          )
INSERT INTO @CpMaxValueRow
        ( CustomerId, EndWeight )
VALUES  ( 1, -- CustomerId - int
          1  -- EndWeight - float
          )
INSERT INTO @CpMaxValueRow
        ( CustomerId, EndWeight )
VALUES  ( 2, -- CustomerId - int
          .5  -- EndWeight - float
          )
INSERT INTO @CpMaxValueRow
        ( CustomerId, EndWeight )
VALUES  ( 2, -- CustomerId - int
          1  -- EndWeight - float
          )
INSERT INTO @CpMaxValueRow
        ( CustomerId, EndWeight )
VALUES  ( 2, -- CustomerId - int
          1  -- EndWeight - float
          )

		  SELECT * FROM @CpMaxValueRow AS A WHERE CustomerId = 1 AND EndWeight = (SELECT MAX(B.EndWeight) FROM @CpMaxValueRow AS B)