Question

how to assign the integer value to nvarchar or varchar datatype in stored procedure

DECLARE @SQLString nvarchar(max)

SET @SQLString = N'declare @Identifier int;
                   SELECT  COUNT(*) FROM ' + @batch+' where Identifier = @Identifier'

i need to check whether the @SQLString is 0 or not.

i.e i want to check —–> if(@SQLString =0). how to assign a integer val to nvarchar or varchar

Answer 1

You’re setting @SQLString to a query… if you want to see if it’s ‘0’, then you can just do:

IF @SQLString = '0'

But I think you’re trying to find out if there are 0 rows in your batch, in which case, you mean something more like:

DECLARE @Res TABLE (cnt int);
INSERT @Res exec sp_executesql @SQLString;

IF (SELECT MAX(cnt) FROM @Res) = 0 /* Means empty batch */