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

142 DIRECT_EXE= LIBNAME Option 4 Chapter 10SyntaxDIMENSION=YES | NOSyntax DescriptionYESspecifies that the database creates dimension tables.NOspecifies that the database creates fact tables.DIRECT_EXE= LIBNAME OptionAllows an SQL delete statement to be passed directly to a DBMS with pass-through.Default value:Valid in:noneSAS/ACCESS LIBNAME statementDBMS support: Aster nCluster, DB2 under UNIX and PC Hosts, DB2 under z/OS,Greenplum, HP Neoview, Informix, Microsoft SQL Server, MySQL, Netezza, ODBC,OLE DB, Oracle, Sybase, Sybase IQ, TeradataSyntaxDIRECT_EXE=DELETESyntax DescriptionDELETEspecifies that an SQL delete statement is passed directly to the DBMS for processing.DetailsPerformance improves significantly by using DIRECT_EXE=, because the SQL deletestatement is passed directly to the DBMS, instead of SAS reading the entire result setand deleting one row at a time.ExamplesThe following example demonstrates the use of DIRECT_EXE= to empty a table froma database.libname x oracle user=scott password=tigerpath=oraclev8 schema=dbitestdirect_exe=delete; /* Create an Oracle table of 5 rows. */data x.dbi_dft;