9.15. Starburst SQL Server Connector#
The Starburst SQL Server Connector is an extended version of the SQL Server Connector with configuration and usage identical.
The following improvements are included:
The SQL Server connector supports user impersonation.
User impersonation can be enabled in the catalog file:
User impersonation in SQL Server connector is based on
EXECUTE AS USER.
For more details visit: docs.microsoft.com.
SQL Server connector supports table and column statistics, as documented in Table Statistics. The statistics are collected by SQL Server and retrieved by the connector. Currently, the connector can use information stored in single-column statistics. SQL Server Database can automatically create column statistics for certain columns. If column statistics were not created automatically for a certain column, you can create them by executing the following statement in SQL Server Database.
CREATE STATISTICS my_statistics_name ON table_schema.table_name (column_name);
SQL Server Database routinely updates the statistics. In some cases, you may want to force statistics update (e.g. after defining new column statistics or after changing data in the table). You can do that by executing the following statement in SQL Server Database.
UPDATE STATISTICS table_schema.table_name;
Refer to SQL Server documentation for information about options, limitations and additional considerations.
||Enables table and column statistics.||
||Duration for which table and column statistics are cached.||
||Cache the fact that table statistics are not available.||