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I created the procedure listed below:
CREATE procedure getdata ( @ID int, @frm varchar(250), @to varchar(250) ) AS BEGIN DECLARE @SQL nvarchar(500) set @SQL = 'select' set @SQL = @SQL + ' EmpName, Address, Salary from Emp_Tb where 1=1 ' IF (@ID <> '' and @ID is not null) Begin SET @sql=@sql+' AND Emp_Id_Pk=' +@ID End END print @sql --execute (@sql) I try to execute it using:
**execute getdata 3,'','';** But I'm getting the following error:
Conversion failed when converting the nvarchar value 'select EmpName, Address, Salary from Emp_Tb where 1=1 AND Emp_Id_Pk=' to data type int
Please help.
705
1 Answer. "CONVERT" considers the column name, not the string that has the column name; your current expression is attempting to convert the string A. my_NvarcharColumn to an integer instead of the column content. SELECT convert (int, N'A.
nvarchar [ ( n | max ) ] Variable-size string data. n defines the string size in byte-pairs and can be a value from 1 through 4,000. max indicates that the maximum storage size is 2^30-1 characters (2 GB). The storage size is two times n bytes + 2 bytes.
The NVARCHAR data type stores character data in a variable-length field. Data can be a string of single-byte or multibyte letters, digits, and other characters that are supported by the code set of your database locale.
You are trying to concatenate a string and an integer.
You need to cast @ID as a string.
try:
SET @sql=@sql+' AND Emp_Id_Pk=' + CAST(@ID AS NVARCHAR(10)) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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