SAS/ACCESS 9.2 for Relational Databases: Reference, Fourth Edition

Performance Considerations 4 Pushing Updates 39General Temporary Table UseFollow these steps to use temporary tables on the DBMS.1 Establish a global connection to the DBMS that persists across SAS procedure andDATA step boundaries.2 Create a DBMS temporary table and load it with data.3 Use the DBMS temporary table with SAS.Closing the global connection causes the DBMS temporary table to close as well.Pushing Heterogeneous JoinsFollow these steps to push heterogeneous joins to the DBMS.1 Establish a global connection to the DBMS that persists across SAS procedure andDATA step boundaries.2 Create a DBMS temporary table and load it with data.3 Perform a join on the DBMS using the DBMS temporary and DBMS permanenttables.4 Process the result of the join with SAS.Pushing UpdatesFollow these steps to push updates (process transactions) to the DBMS.1 Establish a global connection to the DBMS that persists across SAS procedure andDATA step boundaries.2 Create a DBMS temporary table and load it with data.3 Issue SQL that uses values in the temporary table to process against theproduction table.4 Process the updated DBMS tables with SAS.Although these processing scenarios are purposely generic, they apply to each DBMSthat supports temporary tables. For details, see the “DBMSTEMP= LIBNAME Option”on page 131.