Question

I am trying to produce a sql query based report that will allow a date range to be inserted in order to get a selection of the data available.

The problem I am having is that when I try this I get the error:

Must declare the scalar variable “@DateFrom”.

the sql i am using is below:

SELECT
  [Cost Category ID]
FROM 
   SRVS.dbo.PACostCategories
WHERE
    (@DateFrom IS NULL OR alias.myDate>= @DateFrom) AND
    (@DateTo IS NULL OR alias.MyDate < DATEADD(d, 1, @DateTo))

Any pointers to get me in the right direction much appreciated.

Answer 1

You have to declare the variable before you try to run your query. You need to do the following to get this to work:

DECLARE @DateFrom datetime
DECLARE @DateTo datetime

SET @DateFrom = yourDateFromValue
SET @@DateTo= yourDateToValue

SELECT [Cost Category ID]
FROM  SRVS.dbo.PACostCategories
WHERE (@DateFrom IS NULL OR alias.myDate>= @DateFrom) AND
      (@DateTo IS NULL OR alias.MyDate < DATEADD(d, 1, @DateTo))