z/OS Version 2 Release 3 DFSORT: Getting Started IBM SC23-6880-30 Note Before using this information and the product it supports, read the information in “Notices” on page 185. This edition applies to Version 2 Release 3 of z/OS (5650-ZOS) and to all subsequent releases and modifications until otherwise indicated in new editions. Last updated: 2019-02-16 © Copyright International Business Machines Corporation 1983, 2017. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents List of Figures...................................................................................................... vii List of Tables........................................................................................................ ix About this document...........................................................................................xiii How to use this document.........................................................................................................................xiii Required product knowledge.................................................................................................................... xiii How to send your comments to IBM......................................................................xv If you have a technical problem.................................................................................................................xv Part 1. Introduction............................................................................................... 1 Chapter 1. What is DFSORT?........................................................................................................................3 DFSORT on the World Wide Web............................................................................................................3 DFSORT FTP site.....................................................................................................................................3 Data sets, records and fields..................................................................................................................3 Sorting data sets.....................................................................................................................................4 Merging data sets................................................................................................................................... 5 Copying data sets................................................................................................................................... 5 Joining data sets.....................................................................................................................................5 What else can you do with DFSORT?..................................................................................................... 5 Creating and running DFSORT jobs........................................................................................................6 Writing jobs....................................................................................................................................... 6 Summary of DFSORT control statements........................................................................................ 6 Running jobs......................................................................................................................................7 Creating and using the sample data sets...............................................................................................7 Part 2. Learning to write JCL and DFSORT control statements.................................9 Chapter 2. Sorting, merging, and copying data sets................................................................................. 11 Sorting data sets...................................................................................................................................11 Sorting by multiple fields................................................................................................................13 Fields...............................................................................................................................................15 Continuing a statement.................................................................................................................. 15 Comment statements..................................................................................................................... 15 JCL for sorting data sets directly....................................................................................................15 Merging data sets................................................................................................................................. 16 Writing the MERGE control statement........................................................................................... 17 JCL for merging data sets directly..................................................................................................18 FIELDS.............................................................................................................................................19 FORMAT...........................................................................................................................................19 VB data set considerations.................................................................................................................. 19 Starting positions............................................................................................................................19 Short control fields......................................................................................................................... 20 Copying data sets................................................................................................................................. 20 Specifying COPY on the SORT, MERGE, or OPTION statement..................................................... 20 JCL for copying data sets directly...................................................................................................20 Chapter 3. Including or omitting records.................................................................................................. 23 Writing the INCLUDE statement.......................................................................................................... 23 Writing the OMIT statement.................................................................................................................26 Allowable comparisons for INCLUDE and OMIT................................................................................. 26 iii Writing constants..................................................................................................................................28 Character strings.............................................................................................................................28 Hexadecimal strings....................................................................................................................... 28 Decimal numbers............................................................................................................................28 Numeric tests for INCLUDE and OMIT.................................................................................................29 Alphanumeric Tests for INCLUDE and OMIT....................................................................................... 29 Substring search for INCLUDE and OMIT............................................................................................ 30 VB data set considerations.................................................................................................................. 30 Starting positions............................................................................................................................30 Short control fields......................................................................................................................... 31 Summary.............................................................................................................................................. 31 Chapter 4. Summing records.....................................................................................................................33 Writing the SUM statement.................................................................................................................. 33 Suppressing records with duplicate control fields..............................................................................35 Handling overflow................................................................................................................................ 36 VB data set considerations.................................................................................................................. 36 Starting positions............................................................................................................................36 Short summary fields......................................................................................................................36 Chapter 5. Reformatting records with fixed fields.................................................................................... 39 Reformatting records after sorting with BUILD or FIELDS..................................................................40