Fixes MicrosoftDocs/sql-docs#3433

Author: rothja

docs/t-sql/language-elements/variables-transact-sql.md

@@ -26,6 +26,9 @@ A Transact-SQL local variable is an object that can hold a single data value of
 > [!NOTE]
 > The names of some Transact-SQL system functions begin with two *at* signs (\@\@). Although in earlier versions of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)], the \@\@functions are referred to as global variables, they are not variables and do not have the same behaviors as variables. The \@\@functions are system functions, and their syntax usage follows the rules for functions.
 
+> [!NOTE]
+> Variables can not be used in views.
+
 The following script creates a small test table and populates it with 26 rows. The script uses a variable to do three things: 
 
 * Control how many rows are inserted by controlling how many times the loop is executed.