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

I've found that when the estimated number of rows is vastly different from the actual number, you're either missing statistics somewhere or the statistics that you have are out of date. You should be able to look at a query plan in SSMS and find out which statistics are either missing or out of date based on cardinality estimates for the different operators.