• Article

MSSQLSERVER_137

Details

Product Name

SQL Server

Product Version

10.0

Product Build Number

 

Event ID

137

Event Source

MSSQLSERVER

Component

SQLEngine

Symbolic Name

P_SCALAR_VAR_NOTFOUND

Message Text

Must declare the scalar variable "%.*ls".

Explanation

This error occurs when a variable is used in a SQL script without first declaring the variable. The following example returns error 137 for both the SET and SELECT statements because @mycol is not declared.

SET @mycol = 'ContactName';

SELECT @mycol;

One of the more complicated causes of this error includes the use of a variable that is declared outside the EXECUTE statement. For example, the variable @mycol specified in the SELECT statement is local to the SELECT statement; thus it is outside the EXECUTE statement.

USE AdventureWorks;

GO

DECLARE @mycol nvarchar(20);

SET @mycol = 'Name';

EXECUTE ('SELECT @mycol FROM Production.Product;');

User Action

Verify that any variables used in a SQL script are declared before being used elsewhere in the script.

Rewrite the script so that it does not reference variables in the EXECUTE statement that are declared outside of it. For example:

USE AdventureWorks;

GO

DECLARE @mycol nvarchar(20) ;

SET @mycol = 'Name';

EXECUTE ('SELECT ' + @mycol + ' FROM Production.Product';) ;