SR0012: Avoid using reserved words for type names
You should avoid using a reserved word as the name of a user-defined type because readers will have a harder time understanding your database code. You can use reserved words in SQL Server as identifiers and object names only if you use delimited identifiers. For a full list of reserved keywords, see this page on the Microsoft Web site: Reserved Keywords (Transact-SQL).
You must rename the user-defined type or object name. You can use database refactoring to easily replace all instances of the name throughout your database project. For more information, see Rename All References to a Database Object.
The first example shows the definition for a user-defined type that will trigger this warning. The second example shows one way to correct the user-defined type and resolve the issue.
-- Potential misuse of a keyword as a type name CREATE TYPE Alter FROM varchar(11) NOT NULL ; -- Corrected type name CREATE TYPE AlterType FROM varchar(11) NOT NULL ;