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

426 Syntax for the SQL Pass-Through Facility for Relational Databases 4 Chapter 13Not all SAS/ACCESS interfaces support this feature, however. To determine whetherit is available in your environment, see “Introduction” on page 75.Here are the tasks that you can complete by using the SQL pass-through facility.3 Establish and terminate connections with a DBMS using its CONNECT andDISCONNECT3 Send dynamic, non-query, DBMS-specific SQL statements to a DBMS using itsEXECUTE statement.3 Retrieve data directly from a DBMS using its CONNECTION TO component inthe FROM clause of a PROC SQL SELECT statement.You can use SQL pass-through facility statements in a PROC SQL query, or you canstore them in an SQL view. When you create an SQL view, any arguments that youspecify in the CONNECT statement are stored with the view. Therefore, when you usethe view in a SAS program, SAS can establish the appropriate connection to the DBMS.Syntax for the SQL Pass-Through Facility for Relational DatabasesOverviewThis section presents the syntax for the SQL pass-through facility statements andthe CONNECTION TO component. For DBMS-specific details, see the documentationfor your SAS/ACCESS interface.PROC SQL ;CONNECT TO dbms-name ;DISCONNECT FROM dbms-name | alias;EXECUTE (dbms-specific-SQL-statement) BYdbms-name | alias;SELECT column-list FROM CONNECTION TO dbms-name | alias (dbms-query)Return CodesAs you use the PROC SQL statements that are available in the SQL pass-throughfacility, any error return codes and error messages are written to the SAS log. Thesecodes and messages are available to you through these SAS macro variables:SQLXRCcontains the DBMS return code that identifies the DBMS error.SQLXMSGcontains descriptive information about the DBMS error that the DBMS generates.The contents of the SQLXRC and SQLXMSG macro variables are printed in the SASlog using the %PUT macro. They are reset after each SQL pass-through facilitystatement has been executed.See “Macro Variables for Relational Databases” on page 401 for more informationabout these return codes.