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

38 Temporary Table Support for SAS/ACCESS 4 Chapter 43 The database does not guarantee sort stability when you use PROC SORT. Sortstability means that the ordering of the observations in the BY statement isexactly the same every time the sort is run against static data. If you absolutelyrequire sort stability, you must place your database data into a SAS data set, andthen use PROC SORT.3 When you use PROC SORT, be aware that the sort rules for SAS and for yourDBMS might be different. Use the Base SAS system option SORTPGM to specifywhich rules (host, SAS, or DBMS) are applied:SORTPGM=BESTsorts data according to the DBMS sort rules, then the host sort rules, andthen the SAS sort rules. (Sorting uses the first available and pertinentsorting algorithm in this list.) This is the default.SORTPGM=HOSTsorts data according to host rules and then SAS rules. (Sorting uses the firstavailable and pertinent sorting algorithm in this list.)SORTPGM=SASsorts data by SAS rules.Temporary Table Support for SAS/ACCESSOverviewDBMS temporary table support in SAS consists of the ability to retain DBMStemporary tables from one SAS step to the next. This ability is a result of establishinga SAS connection to the DBMS that persists across multiple SAS procedures and DATAsteps.Temporary table support is available for these DBMSs.3 Aster nCluster3 DB2 under UNIX and PC Hosts3 DB2 under z/OS3 Greenplum3 HP Neoview3 Informix3 Netezza3 ODBC3 OLE DB3 Oracle3 Sybase3 Sybase IQ3 TeradataThe value of DBMS temporary table support in SAS is increased performancepotential. By pushing processing to the DBMS in certain situations, you can achieve anoverall performance gain. These processes provide a general outline of how to useDBMS temporary tables.