HP 3000 Manuals HP 3000 Manuals
Sets The unique identification of a Record Type is made using sets of "include" and "omit" Record Type Specifications. These sets may be used singly or intermixed to include or omit data records in the current section according to their characteristics. (Multiple characteristics within a set must be tied together using the AND operation.) An Include set defines the characteristics of a Record Type that is to be included (accepted) in the current section. (Consecutive include sets must be tied together using the OR operation on the first line of the set.) An Omit set defines the characteristics of a Record Type that is to be omitted (rejected) from the current section. (Consecutive omit sets must be tied together using the OR operation on the first line of the set.) Within a section, include/omit sets are used in order of their appearance to evaluate the current input record. If the record matches the characteristics defined for a set (Record Type), it is immediately "accepted" or "rejected" for inclusion in the section, and so no more include/omit sets will be evaluated. If the record does not match the set's characteristics, XSORT moves on to the next include/omit set for evaluation. Additional information concerning record types, sets and sections and an example of how they are used appear in Section 8. This information is primarily useful for advanced sorts. Typically, users are concerned with simple identification of different Record Types for inclusion or omission.