---
document_id: agent.dataset.tmall.task.bc_shop_comparison
schema_version: 1
---

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# B/C shop comparison / B/C 店铺比较

Compare monthly atomic sales metrics across normalized B/C shop groups.

按归一化后的 B/C 店铺分组比较月度原子销售指标。

## Required inputs / 必要输入

- `time` — `user_required`; required: Analysis time range
  分析时间范围

## Steps / 步骤

1. `query_bc_groups` · `query_metrics` — Group sales by B/C shop type.
   按 B/C 店铺类型分组查询销售。
   - metrics: `gmv`, `units`
   - group_by: `bc_type`
   - time: `${time}`

## Output requirements / 输出要求

- Show B, C, and unknown as separate returned groups.
  分别展示 B、C 和未知分组。

## Limitations / 限制

- The shop label is descriptive and does not establish causality.
  店铺标签仅作描述，不构成因果结论。

## Stop conditions / 停止条件

- Stop if the requested time range is missing.
  缺少时间范围时停止并追问。