Working with datetime with dynamic query in SQL Server

Question

I am using a dynamic query wherein I want to use the variable which holds the datetime, whenever I execute the query it says cannot convert datetime from string, when I cast that variable to varchar(max), it takes it as string and not datetime, so how should I execute the query..

Below is my SQL query which I am trying to execute.

SET @SQL1 = 'SELECT B.FacId, B.FacName, B.BookCode, B.BookName, B.Quantity, 
CONVERT(VARCHAR(10), B.TillDate, 104) AS TILLDATE FROM '+@TABLE+' B
WHERE B.TillDate BETWEEN CONVERT(VARCHAR(10),'+@FROMDATE+', 101) and 
CONVERT(VARCHAR(10), DATEADD(DD,1,'+@TODATE+'), 101)'

EXEC SP_EXECUTESQL @SQL1

here @fromdate and @todate are the datetime type coming from different temp table. and stored in these variable..

How should I execute this query?

Answer 1

You need to quote your dates..

SET @SQL1 = 
   'SELECT B.FacId, 
           B.FacName, 
           B.BookCode, 
           B.BookName, 
           B.Quantity, 
           CONVERT(VARCHAR(10), B.TillDate, 104) AS TILLDATE 
           FROM '+@TABLE+' B 
           WHERE B.TillDate BETWEEN ''' + CONVERT(VARCHAR(10),@FROMDATE, 101) + ''' and ''' + CONVERT(VARCHAR(10),DATEADD(DD,1,@TODATE), 101) + ''''