T-SQL VARCHAR(MAX) Truncated

Question

DECLARE @str VARCHAR (MAX);

SELECT @str = COALESCE(@str + CHAR(10), \'\') +
       \'EXECUTE CreateDeno \' + CAST(ID AS VARCHAR) 
FROM   GL_To_Batch_Details
WHERE           


        

Answer 1

The default length of a varchar is 30 characters:

CAST (ID AS VARCHAR) 

Is it possible that id is longer than 30 characters?