How to add an index or primary key to a user-defined table type in SQL Server?

Question

I have this user-defined type that I would like to add a primary key or index to:

IF NOT EXISTS (
  SELECT * 
  FROM sys.types st 
  JOIN sys.schemas ss 
    ON          


        

Answer 1

Why not this?

CREATE TYPE [dbo].[DistCritGroupData] AS TABLE
  (
    [DistCritTypeId] [int] NOT NULL PRIMARY KEY CLUSTERED,
    [ItemAction] [int] NOT NULL,        
    [ObjectId] [int] NOT NULL,
    [OperatorType] [int] NOT NULL     
  );

or

CREATE TYPE [dbo].[DistCritGroupData] AS TABLE
  (
    [DistCritTypeId] [int] NOT NULL,
    [ItemAction] [int] NOT NULL,        
    [ObjectId] [int] NOT NULL,
    [OperatorType] [int] NOT NULL,
    PRIMARY KEY CLUSTERED ([DistCritTypeId] ASC)        
  );

CREATE TYPE does not allow naming of contraints. Like table variables.