sys.periods (Transact-SQL)
Applies to: 
SQL Server 2016 (13.x) and later versions
Returns a row for each table for which periods have been defined.
| Column header | Data type | Description |
|---|---|---|
| name | sysname | Name of the period |
| period_type | tinyint | The numeric value representing the type of period: 1 = system-time period |
| period_type_desc | nvarchar(60) | The text description of the type of column: SYSTEM_TIME_PERIOD |
| object_id | int | The id of the table containing the period_type column |
| start_column_id | int | The id of the column that defines the lower period boundary |
| end_column_id | int | The id of the column that defines the upper period boundary |
Permissions
The visibility of the metadata in catalog views is limited to securables that a user either owns, or on which the user was granted some permission. For more information, see Metadata Visibility Configuration.
See Also
System Views (Transact-SQL)
Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)
sys.all_columns (Transact-SQL)
sys.system_columns (Transact-SQL)
Querying the SQL Server System Catalog FAQ
Temporal Tables