SQL CASE and local variables

Question

I would like to know how I can use local variables in CASE statements in SQL?

This script gives me an error:

    DECLARE @Test int;
    DE         


        

Answer 1

In SQL Server I would write it like this:

DECLARE @Test int;
DECLARE @Result char(10);
SET @Test = 10;

SET @Result = CASE @Test
WHEN 10
 THEN 'OK test'
END
Print @Result;

The WHEN clause does not have @Test = 10, as the @Test variable is stated in the CASE clause.

See the CASE documentation for SQL Server.