cobol-java-v3/benchmark-programs/08-keybreak-aggregate/README.md

08-keybreak-aggregate — Key Break Aggregate

电信业务场景

套餐统计。按套餐代码进行key切聚合，计算各套餐的合同数、最大/最小金额、总量等统计信息。

Demonstrates key break processing with four statistical aggregates:

• COUNT: Number of records in each key group
• MIN: Minimum VALUE in each group
• MAX: Maximum VALUE in each group
• TOTAL: Sum of VALUE in each group

Same control-break logic as 07-keybreak-summary, extended with min/max tracking using IF comparisons.

Files

File	Purpose
main-08-keybreak-aggregate.cbl	COBOL program (fixed format)
data-gen.sh	Generate sorted test data
run.sh	Compile, run, verify output

Input Record

Field	Type	Length
KEY	PIC X	10
VALUE	PIC 9	10

Output Record

Field	Type
KEY	PIC X(10)
COUNT	PIC Z(5)9
MIN	PIC Z(9)9
MAX	PIC Z(9)9
TOTAL	PIC Z(9)9