{
  "说明": "全部为合成输入与拟定制工作表，未连接真实系统，预期不是实测结果。",
  "研究日期": "2026-10-24",
  "题目": "报表关联一张明细表后数量翻倍，Agent 怎样找出连接放大的依据",
  "工作表字段": [
    "事实键",
    "原粒度",
    "关联键",
    "匹配集合",
    "展开行",
    "计数对象",
    "合法明细依据",
    "改写候选",
    "审核决定"
  ],
  "samples": [
    {
      "case_id": "W079-01",
      "input": "工单T1一行，标签有A/B两行，连接后COUNT工单成2",
      "expected": "指出一对多展开及计数口径，提交去重/预聚合候选待数据人员确认",
      "actual": "",
      "human_review": "由本场景授权业务或技术负责人核对；本表不自动给出批准、上线或安全通过结论。",
      "reviewer": "",
      "evidence_location": ""
    },
    {
      "case_id": "W079-02",
      "input": "工单T2两条合法执行明细，关联工单头后有两行",
      "expected": "保留合法粒度，不机械去重",
      "actual": "",
      "human_review": "由本场景授权业务或技术负责人核对；本表不自动给出批准、上线或安全通过结论。",
      "reviewer": "",
      "evidence_location": ""
    },
    {
      "case_id": "W079-03",
      "input": "两张事实表按日期连接，某日各2与3行",
      "expected": "提供6条组合可复算输入，结果填写栏留空",
      "actual": "",
      "human_review": "由本场景授权业务或技术负责人核对；本表不自动给出批准、上线或安全通过结论。",
      "reviewer": "",
      "evidence_location": ""
    }
  ],
  "补充业务输入": {
    "W079-01": {
      "ticket": [
        {
          "id": "T1"
        }
      ],
      "tags": [
        {
          "ticket": "T1",
          "tag": "A"
        },
        {
          "ticket": "T1",
          "tag": "B"
        }
      ],
      "expected_pairs": [
        [
          "T1",
          "A"
        ],
        [
          "T1",
          "B"
        ]
      ],
      "expected": "标签关联2行，工单不同身份仍1项"
    },
    "W079-02": {
      "ticket": "T2",
      "executions": [
        {
          "id": "X1",
          "ticket": "T2"
        },
        {
          "id": "X2",
          "ticket": "T2"
        }
      ],
      "expected": "两次合法执行不能被按工单ID去重删除"
    },
    "W079-03": {
      "left": [
        {
          "event": "E1",
          "date": "2026-10-24"
        },
        {
          "event": "E2",
          "date": "2026-10-24"
        }
      ],
      "right": [
        {
          "item": "D1",
          "date": "2026-10-24"
        },
        {
          "item": "D2",
          "date": "2026-10-24"
        },
        {
          "item": "D3",
          "date": "2026-10-24"
        }
      ],
      "join_key": "date",
      "expected_pairs": [
        [
          "E1",
          "D1"
        ],
        [
          "E1",
          "D2"
        ],
        [
          "E1",
          "D3"
        ],
        [
          "E2",
          "D1"
        ],
        [
          "E2",
          "D2"
        ],
        [
          "E2",
          "D3"
        ]
      ],
      "expected": "6配对；不等于6工单事件"
    },
    "actual": ""
  },
  "source_support": [
    {
      "url": "https://learn.microsoft.com/en-us/power-bi/transform-model/desktop-many-to-many-relationships",
      "support": "多对多与桥接关系需要明确关联键和过滤传播；本文不把桥接表当作自动消除重复的通用办法。",
      "opened_on": "2026-10-24"
    },
    {
      "url": "https://learn.microsoft.com/en-us/power-bi/guidance/star-schema",
      "support": "事实表粒度、维度键与Type 2有效期/代理键支持历史归属；Power Query不能凭当前值恢复丢失历史。",
      "opened_on": "2026-10-24"
    }
  ]
}