Question

I know that user defined types are stored in information_schema.domains, but is it possible to get the definitions for types which are of type table type?

To be clear I am looking for the actual table type definition:

e.g. I want to get the column definitions for myTableType

CREATE TYPE myTableType AS TABLE(
     Id INT,
     SomeValue NVARCHAR(20)
);

Answer 1

To get the list of columns for a user-defined table type, run this. You’ll need to substitute your table name for some_table_type:

SELECT *
FROM sys.columns
WHERE object_id IN (
  SELECT type_table_object_id
  FROM sys.table_types
  WHERE name = 'some_table_type'
);