You can use a CTE or a Derived table like this
; WITH cte_Students AS
(
SELECT*,
CASE WHEN SUBSTRING(rate, 1, 1) = '*' THEN '10' ELSE SUBSTRING(rate, 1, 1) END AS game1,
CASE WHEN SUBSTRING(rate, 2, 1) = '*' THEN '10' ELSE SUBSTRING(rate, 2, 1) END AS game2,
CASE WHEN SUBSTRING(rate, 3, 1) = '*' THEN '10' ELSE SUBSTRING(rate, 3, 1) END AS game3,
CASE WHEN SUBSTRING(rate, 4, 1) = '*' THEN '10' ELSE SUBSTRING(rate, 4, 1) END AS game4,
CASE WHEN SUBSTRING(rate, 5, 1) = '*' THEN '10' ELSE SUBSTRING(rate, 5, 1) END AS game5
FROMstudents
)
SELECT*, ( game1 + game2 + game3 + game4 + game5 ) / 5 AS [percent]
FROMcte_Students
How to post data/code on a forum to get the best help - Jeff Moden
http://www.sqlservercentral.com/articles/Best+Practices/61537/