Computing varchar value in sql

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I have a varchar field in my table name as attendance

Its value as 25/25;

I need to get its answer as 1 while executing this value...
How it is possible???

Posted 8-Apr-13 19:46pm

Aswathi Narayan

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Karthik Harve 9-Apr-13 1:56am

your question is not clear. improve your question and tell us, what exactly, you are trying to do ? and where you stuck ?

2 solutions

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Mehdi Gholam · Answer 1 · 2013-04-08T19:59:00

Solution 1

You are better off breaking up the values in your database into separate columns so you can compute easily in Sql Server, or you can compute in c# code.

Posted 8-Apr-13 19:59pm

Mehdi Gholam

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Maciej Los 9-Apr-13 2:12am

+5!

Mehdi Gholam 9-Apr-13 2:12am

Thanks Maciej!

Maciej Los · Answer 2 · 2013-04-08T20:13:00

As Mehdi Gholam wrote, bad design of table, but still you can find solution (hard coded).

See example:

SQL

DECLARE @val VARCHAR(30)
DECLARE @search VARCHAR(5)

SET @val = '25/25'
SET @search = '/'

SELECT MyFirstVal, MySecondVal, CONVERT(FLOAT, MyFirstVal/MySecondVal) AS Result
FROM (
    SELECT  CONVERT(INT, LEFT(@val, CHARINDEX(@search, @val)-1)) AS MyFirstVal,
            CONVERT(INT, RIGHT(@val, LEN(@val)- CHARINDEX(@search, @val))) AS MySecondVal
)AS T