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

Try

declare @d DATETIME2(7) 
set @d = DATEADD (DAY , -1 , SYSDATETIME ())
declare  @d2 DATETIME2(7)
set @d2  = SYSDATETIME ()

SELECT   Id , GameTypeId , PlayerId , BetAmount , Profit ,
         DateAndTime
FROM     Results
WHERE    DateAndTime >= @d
         AND
         DateAndTime < @d2
ORDER BY DateAndTime ASC
OPTION (RECOMPILE);

This will recompile the plan for the statement once the value of the variables are known and so allow accurate cardinality estimates to be used. If you know you will always be selecting a very small percentage you could just use the FORCESEEK (if SQL Server 2008) hint instead to avoid the recompiles but using this hint may be catastrophically bad for larger ranges because of the number of key lookups!