Displays properties of user-defined table types in SQL Server. A table type is a type from which table variables or table-valued parameters could be declared. Each table type has a type_table_object_id that is a foreign key into the sys.objects catalog view. You can use this ID column to query various catalog views, in a way that is similar to an object_id column of a regular table, to discover the structure of the table type such as its columns and constraints.
|Column name||Data type||Description|
|<inherited columns>||For a list of columns that this view inherits, see sys.types (Transact-SQL).|
|type_table_object_id||int||Object identification number. This number is unique within a database.|
|is_memory_optimized||bit||Applies to: SQL Server 2014 (12.x) through SQL Server 2017.
The following are the possible values:
0 = is not memory optimized
1 = is memory optimized
A value of 0 is the default value.
Table types are always created with DURABILITY = SCHEMA_ONLY. Only the schema is persisted on disk.
The visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.