Hp Integrity NonStop J-Series Instrukcja Użytkownika Pobierz pdf (Strona 168)

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101

USING AN ENABLE APPLICATION

READ APPROXIMATE

READ APPROXIMATE (F6)

To read the first record (or records) in sequence whose key value

is equal to or greater than that of a key value you have entered,

request a READ APPROXIMATE operation.

Suppose that you request a READ APPROXIMATE operation for the

following group key field:

+ DEPT

REGNUM __

BRANCHNUM __

If you enter a value of 01 or 1 in REGNUM, the application will

return the first record (or records) with a REGNUM value equal to

or greater than 1 (if you enter a leading zero with the 1, the

zero is ignored). The BRANCHNUM field of the returned record

will be the lowest in value of any records with a REGNUM value of

If you request a READ APPROXIMATE operation on an alphanumeric or

alphabetic field, the application will return records in

alphanumeric sequence. For example, assume a file contains two

records with alternate key name fields: JACK WILSON and JANE

ADAMS. If you enter J or JA in the name field and press F6 to

request a READ APPROXIMATE operation, the application will return

JACK WILSON as the first record.

READ APPROXIMATE Operation for an Outermost Box

To perform a READ APPROXIMATE operation, do the following:

1. Enter a value in the desired key field.

2. Press F6.

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