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  #1  
Old May 27th, 2004, 09:41 PM
Bren
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I am tracking river levels for three rivers. I have set up a query to give me the latest reading for each river. However, it is giving me the first readings, not the last.
Here is what I have:

SELECT TOP 3 tblriverlevel.ID, tblriverlevel.River, tblriverlevel.Date, tblriverlevel.[Levelft], tblriverlevel.[Levelin], tblriverlevel.Remarks, tblriverlevel.EventName
FROM tblriverlevel
WHERE (((tblriverlevel.Date) In (SELECT TOP 1
[Self].[date]
FROM
[tblriverlevel] AS [Self]
WHERE
[Self].[river] = [tblriverlevel].[river])))
ORDER BY tblriverlevel.Date DESC;

I am not sure what I am doing wrong.
  #2  
Old May 27th, 2004, 10:16 PM
Gerald Stanley
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It looks as if the ORDER BY clause is applied to the first
SELECT not the second. You could also use the Max function
e.g.
WHERE (((tblriverlevel.Date) In (SELECT Max([Self].[date])
FROM
[tblriverlevel] AS [Self]
WHERE
[Self].[river] = [tblriverlevel].[river])))


Hope This Helps
Gerald Stanley MCSD
-----Original Message-----
I am tracking river levels for three rivers. I have set

up a query to give me the latest reading for each river.
However, it is giving me the first readings, not the last.
Here is what I have:

SELECT TOP 3 tblriverlevel.ID, tblriverlevel.River,

tblriverlevel.Date, tblriverlevel.[Levelft],
tblriverlevel.[Levelin], tblriverlevel.Remarks,
tblriverlevel.EventName
FROM tblriverlevel
WHERE (((tblriverlevel.Date) In (SELECT TOP 1
[Self].[date]
FROM
[tblriverlevel] AS [Self]
WHERE
[Self].[river] = [tblriverlevel].[river])))
ORDER BY tblriverlevel.Date DESC;

I am not sure what I am doing wrong.
.

  #3  
Old May 28th, 2004, 03:31 PM
Bren
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That worked great. Thank you.
 




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