{
    "summary": [
        {
            "name": "opportunity_predictions",
            "title": "商机预测表",
            "primary": "id",
            "catelog": "indication"
        }
    ],
    "fields": [
        {
            "name": "id",
            "title": "预测记录ID",
            "type": "str",
            "length": 32,
            "nullable": "no",
            "comments": "主键 - UUID格式"
        },
        {
            "name": "opportunity_id",
            "title": "商机ID",
            "type": "str",
            "length": 32,
            "nullable": "no",
            "comments": "关联的商机ID"
        },
        {
            "name": "predicted_amount",
            "title": "预测金额",
            "type": "decimal",
            "length": 15,
            "dec": 2,
            "nullable": "no",
            "default": "0.00",
            "comments": "基于历史转化率计算的预测成交金额"
        },
        {
            "name": "confidence_level",
            "title": "置信度",
            "type": "decimal",
            "length": 5,
            "dec": 4,
            "nullable": "no",
            "default": "0.0000",
            "comments": "预测的置信度（0-1）"
        },
        {
            "name": "prediction_date",
            "title": "预测日期",
            "type": "date",
            "nullable": "no",
            "comments": "预测生成日期"
        },
        {
            "name": "actual_amount",
            "title": "实际金额",
            "type": "decimal",
            "length": 15,
            "dec": 2,
            "nullable": "yes",
            "comments": "实际成交金额（成交后更新）"
        },
        {
            "name": "deviation_rate",
            "title": "偏差率",
            "type": "decimal",
            "length": 5,
            "dec": 4,
            "nullable": "yes",
            "comments": "预测与实际的偏差率"
        },
        {
            "name": "created_at",
            "title": "创建时间",
            "type": "timestamp",
            "nullable": "no",
            "comments": "记录创建时间"
        }
    ],
    "indexes": [
        {
            "name": "idx_predictions_opportunity",
            "idxtype": "unique",
            "idxfields": ["opportunity_id", "prediction_date"]
        },
        {
            "name": "idx_predictions_date",
            "idxtype": "index",
            "idxfields": ["prediction_date"]
        }
    ]
}