I wrote a SQL Query but not Run,WHY? [closed]

Answer 1

It is not working because you can't put a single string into the in clause and expect the engine to parse that.

You can only put in there multiple single values like you did when you used it in the first query.

where id in ('1','2')  -- works beause that are two SEPERATE values
where id in ('1,2')    -- works not because it is ONE string

Answer 2

If you are in SQL Server you likely need to use dynamic sql; that needs you to build your query up as a string then execute it when its complete

Change your empid declaration to

  DECLARE @Empid VARCHAR(MAX) = 'SELECT * FROM cmsEmployee WHERE EmployeeID IN( '

When you have selected it add a close bracket (you could build the string up in steps if you want to.)

select @empid = @empid + ')'

If you take your print statement it should run when you have it right; to run it in your code

exec sp_exectutesql @empID

Answer 3

If you write a direct query that consists of multiple sections, you should not forget to add GO to execute each section.

Select ... 
GO
Print ... 
GO
Select ...