Substring Example
This screen demonstrates the use of the "Substring of a field/record" option and how it may be used in breaking down a field/record after input from a file.
Using the example of the accounting file ACCMST and the chart of accounts field CHTACC described in the last section, the "virtual" field COMPNO can be derived from the "real" field CHTACC as follows:
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DC@P201605 Substringing of a Field/Record
File: ACCMST Accounts Master file
Virtual field: COMPNO Company number (first 2 digits of CHTACC)
Derive "virtual" field on input from file . . : YES YES, NO Setup "real" field before output to file . . : NO YES, NO
Field to substring from . . . . . . . . . . . . CHTACC
Start position . . . . . . . . . . . . . . . . 1
Fnn=Help Fnn=Exit Fnn=Cancel Fnn=Messages Fnn=Change Fnn=Delete
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A similar substringing operation could be performed on CHTACC to derive virtual fields DIVNUM and COSTCT simply by specifying a start position of 3 for DIVNUM and 5 for COSTCT.