SQL Pass-Through and the ODBC Interface
2011
Does SAS ® implicit SQL pass-through sometimes fail to meet your needs? Do you sometimes need to communicate directly with your Oracle ® or DB2 ® database in that database's native language? Explicit SQL pass-through might be your solution. The author briefly introduces syntax for explicit SQL pass-through queries before showing examples of specific situations when explicit pass-through queries solve problems when extracting data. The author discusses the relationship between processing location and processing speed. She also gives specific examples of how differences between Oracle, DB2, and SAS sometimes make it necessary to do the initial extraction or transformation of data via pass-through. The examples used to illustrate the differences between the RDBMS and SAS include numeric precision and naming conventions. A brief discussion of differences in SQL dialects and functions between systems is also included.
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