NB-076
41 lines
1017 B
Markdown
41 lines
1017 B
Markdown
# 08-keybreak-aggregate — Key Break Aggregate
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## 电信业务场景
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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。
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Demonstrates key break processing with four statistical aggregates:
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- **COUNT**: Number of records in each key group
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- **MIN**: Minimum VALUE in each group
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- **MAX**: Maximum VALUE in each group
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- **TOTAL**: Sum of VALUE in each group
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Same control-break logic as 07-keybreak-summary, extended with
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min/max tracking using IF comparisons.
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## Files
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| File | Purpose |
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|------|---------|
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| `main-08-keybreak-aggregate.cbl` | COBOL program (fixed format) |
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| `data-gen.sh` | Generate sorted test data |
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| `run.sh` | Compile, run, verify output |
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## Input Record
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| Field | Type | Length |
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|-------|------|--------|
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| KEY | PIC X | 10 |
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| VALUE | PIC 9 | 10 |
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## Output Record
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| Field | Type |
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|-------|------|
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| KEY | PIC X(10) |
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| COUNT | PIC Z(5)9 |
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| MIN | PIC Z(9)9 |
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| MAX | PIC Z(9)9 |
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| TOTAL | PIC Z(9)9 |
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