Dynamic Select

LANSA Technical

Dynamic Select

Mandatory.

Specify whether or not any select/omit tests specified on the lower portion of the screen are to be done at execution time.

Default=NO

Rules

  • NO (unchecked/not selected), indicates that the dynamic select feature should not be used. In this case the access path associated with the logical file will contain only records that match the select/omit criteria specified.
  • YES (checked/selected) , indicates that the dynamic select feature should be used. In this case the access path associated with the logical file will contain all records in the file. The select/omit testing should be done when the program reads the records from the file.

Tips & Techniques

  • If you specify YES (checked/selected), then do not specify any select/omit tests or else the value will be automatically changed back to NO.

Platform Considerations

  • IBM i: The dynamic select facility is a feature of the operating system. Using it can have significant overall performance benefits in some situations. For more information about this facility refer to the appropriate IBM supplied manual.

 

Ý 3.4.1 Logical View Definition