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Posted by Roy Harvey on 07/26/07 20:46
I think you have columns and rows confused in your first paragraph. I
also can't quite figure out what you mean by variables, as A is both
(apparently) a column in the table and something you are trying to
SET.
This query might give you something to play with.
SELECT X.A +
(SELECT X
FROM YourTable as Y
WHERE Y.ID =
(select max(ID) FROM YourTable as Z
where Z.ID < A.ID))
FROM YourTable as X
WHERE A.ID =
(select max(ID) FROM YourTable)
Roy Harvey
Beacon Falls, CT
On Thu, 26 Jul 2007 20:08:43 -0000, mcolson <mcolson1590@gmail.com>
wrote:
>Is it possible to set a variable in a stored procedure equal to a
>value from a column when that column's respective ID is equal to
>max(id)-1
>
>
>ID A B
>1 24 24
>2 53 29
>3 76 47
>4 32 32
>
>What I am trying to do is update A in the last column to be equal to B
>from the 4th row, plus A from the 3rd row. If I could set a variable
>equal to A in row 3 (in this case 76) I could easily add the variable
>to the existing value.
>
>I've tried something like this before. I'm sure some of you will say
>right away, "of coarse that doesn't work". I'm new to sql.
>
>Set A = A + select( B from mytable where ID = (select (max(ID)-1) from
>mytable))
>where ID = (select (max(ID)) from mytable)
>
>Thanks
>
>Matt
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