how that happen SP sql server

Question

I get something weird. i ran this sql:

SELECT   Id , GameTypeId , PlayerId , BetAmount , Profit ,
         DateAndTime
FROM     Results
WHERE    DateAndTime >         


        

Answer 1

Because you're using variables for your values, the query optimizer doesn't know how selective your WHERE clause is, and decides to use a table scan. Try creating a clustered index on your DateAndTime field.