{
    "table_name": "receivables",
    "fields": [
        {"name": "id", "type": "varchar(64)", "not_null": true, "comment": "主键ID"},
        {"name": "order_id", "type": "varchar(64)", "comment": "订单ID"},
        {"name": "contract_id", "type": "varchar(64)", "comment": "合同ID"},
        {"name": "customer_id", "type": "varchar(64)", "comment": "客户ID"},
        {"name": "receivable_amount", "type": "decimal(15,2)", "comment": "应收金额"},
        {"name": "received_amount", "type": "decimal(15,2)", "comment": "已收金额"},
        {"name": "due_date", "type": "date", "comment": "到期日期"},
        {"name": "status", "type": "varchar(32)", "comment": "状态"},
        {"name": "description", "type": "varchar(500)", "comment": "描述"},
        {"name": "org_id", "type": "varchar(64)", "comment": "组织ID"},
        {"name": "created_at", "type": "timestamp", "comment": "创建时间"},
        {"name": "updated_at", "type": "timestamp", "comment": "更新时间"}
    ],
    "indexes": [
        {"name": "idx_receivables_customer", "fields": ["customer_id"]},
        {"name": "idx_receivables_contract", "fields": ["contract_id"]},
        {"name": "idx_receivables_status", "fields": ["status"]},
        {"name": "idx_receivables_due_date", "fields": ["due_date"]}
    ]
}