Compaq COBOL AAQ2G1FTK - Manual (Page 8)

9 Using the SORT and MERGE Statements
9.1 Sorting Data with the SORT Statement . . . . . . . . . . . . . . . . . . . . . . . . . . 9–1
9.1.1 File Organization Considerations for Sorting . . . . . . . . . . . . . . . . . . . . 9–2
9.1.2 Specifying Sort Parameters with the ASCENDING and
DESCENDING KEY Phrases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9–3
9.1.3 Resequencing Files with the USING and GIVING Phrases . . . . . . . . . 9–3
9.1.4 Manipulating Data Before and After Sorting with the INPUT
PROCEDURE and OUTPUT PROCEDURE Phrases . . . . . . . . . . . . . .
9–3
9.1.5 Maintaining the Input Order of Records Using the WITH
DUPLICATES IN ORDER Phrase . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9–6
9.1.6 Specifying Non-ASCII Collating Sequences with the COLLATING
SEQUENCE IS Alphabet-Name Phrase . . . . . . . . . . . . . . . . . . . . . . . .
9–7
9.1.7 Multiple Sorting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–7
9.1.8 Sorting Variable-Length Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–8
9.1.9 Preventing I/O Aborts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–9
9.1.10 Sorting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–9
9.1.11 Sorting at the Operating System Level . . . . . . . . . . . . . . . . . . . . . . . . 9–9
9.2 Merging Data with the MERGE Statement . . . . . . . . . . . . . . . . . . . . . . . . 9–10
9.3 Sample Programs Using the SORT and MERGE Statements . . . . . . . . . . 9–10
10 Producing Printed Reports
10.1 Designing a Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–1
10.2 Components of a Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–1
10.3 Accumulating and Reporting Totals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–4
10.4 The Logical Page and the Physical Page . . . . . . . . . . . . . . . . . . . . . . . . . . 10–5
10.5 Programming a Conventional File Report . . . . . . . . . . . . . . . . . . . . . . . . . 10–6
10.5.1 Defining the Logical Page in a Conventional Report . . . . . . . . . . . . . . 10–6
10.5.2 Controlling the Spacing in a Conventional Report . . . . . . . . . . . . . . . . 10–7
10.5.3 Advancing to the Next Logical Page in a Conventional Report . . . . . . 10–7
10.5.3.1 Programming for the Page-Overflow Condition in a Conventional
Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10–7
10.5.3.2 Using a Line Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–8
10.5.4 Printing the Conventional Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–9
10.5.5 A Conventional File Report Example . . . . . . . . . . . . . . . . . . . . . . . . . . 10–9
10.6 Programming a Linage-File Compaq COBOL Report . . . . . . . . . . . . . . . . . 10–12
10.6.1 Defining the Logical Page in a Linage-File Report . . . . . . . . . . . . . . . . 10–13
10.6.2 Controlling the Spacing in a Linage-File Report . . . . . . . . . . . . . . . . . 10–14
10.6.3 Using the LINAGE-COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–14
10.6.4 Advancing to the Next Logical Page in a Linage-File Report . . . . . . . . 10–14
10.6.5 Programming for the End-of-Page and Page-Overflow Condition . . . . . 10–15
10.6.6 Printing a Linage-File Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–19
10.6.7 A Linage-File Report Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–20
10.7 Modes for Printing Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–23
10.7.1 Directly Allocating a Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–23
10.7.2 Spooling to a Mass Storage Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–24
10.8 Programming a Report Writer Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–24
10.8.1 Using the REPORT Clause in the File Section . . . . . . . . . . . . . . . . . . 10–25
10.8.2 Defining the Report Section and the Report File . . . . . . . . . . . . . . . . . 10–25
10.8.3 Defining a Report Writer Logical Page with the PAGE Clause . . . . . . 10–25
10.8.4 Describing Report Group Description Entries . . . . . . . . . . . . . . . . . . . 10–26
10.8.5 Vertical Spacing for the Logical Page . . . . . . . . . . . . . . . . . . . . . . . . . . 10–29
10.8.6 Horizontal Spacing for the Logical Page . . . . . . . . . . . . . . . . . . . . . . . 10–30
10.8.7 Assigning a Value in a Print Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–31
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