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

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

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600 Passing <strong>SAS</strong> Functions to Microsoft SQL Server 4 Chapter 20Passing <strong>SAS</strong> Functions to Microsoft SQL Server<strong>SAS</strong>/<strong>ACCESS</strong> Interface to Microsoft SQL Server passes the following <strong>SAS</strong> functionsto the data source <strong>for</strong> processing if the DBMS server supports this function. For morein<strong>for</strong>mation, see “Passing Functions to the DBMS Using PROC SQL” on page 42.ABSARCOSARSINATANAVGCEILCOSEXPFLOORLOGLOG10LOWCASEMAXMINSIGNSINLocking in the Microsoft SQL Server InterfaceThe following LIBNAME and data set options let you control how the Microsoft SQLServer interface handles locking. For general in<strong>for</strong>mation about an option, see“LIBNAME Options <strong>for</strong> <strong>Relational</strong> <strong>Databases</strong>” on page 92.READ_LOCK_TYPE= ROW | TABLE | NOLOCKUPDATE_LOCK_TYPE= ROW | TABLE | NOLOCKREAD_ISOLATION_LEVEL= S | RR | RC | RU | VThe Microsoft SQL Server ODBC driver manager supports the S, RR, RC, RU, andV isolation levels, as defined in this table.Table 20.3Isolation Levels <strong>for</strong> Microsoft SQL ServerIsolation LevelS (serializable)RR (repeatable read)RC (read committed)DefinitionDoes not allow dirty reads, nonrepeatable reads, orphantom reads.Does not allow dirty reads or nonrepeatable reads; doesallow phantom reads.Does not allow dirty reads or nonrepeatable reads; doesallow phantom reads.

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