March 7, 2013 at 6:47 am
Can I use max(VisitID) to get the most recent VisitID from a table? VisitID is a sequential "number" but, is stored as varchar.
March 7, 2013 at 7:00 am
Think you have to convert it to a number first...
DECLARE @t_tbl TABLE (VisitId VARCHAR(50));
INSERT INTO @t_tbl (VisitId) VALUES ('1'), ('2'), ('5'), ('7'), ('11');
SELECT MAX(VisitId) FROM @t_tbl;
-- returns 7
SELECT MAX(CONVERT(INT,VisitId)) FROM @t_tbl;
-- returns 11
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- Nate
March 7, 2013 at 7:05 am
Thanx.
March 7, 2013 at 7:28 am
And then I would recommend changing the datatype to an int or whatever number type makes the most sense.
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