{
  "summary": [
    {
      "name": "sync_state",
      "title": "同步状态跟踪",
      "primary": "id",
      "classification": "system"
    }
  ],
  "fields": [
    {
      "name": "id",
      "type": "VARCHAR(32)",
      "nullable": false,
      "default": "",
      "comment": "主键"
    },
    {
      "name": "entity_type",
      "type": "VARCHAR(32)",
      "nullable": false,
      "default": "",
      "comment": "实体类型: users/pricing/llmage/uapi"
    },
    {
      "name": "entity_id",
      "type": "VARCHAR(64)",
      "nullable": true,
      "default": "",
      "comment": "实体标识（全量同步时为空）"
    },
    {
      "name": "last_sync_time",
      "type": "DATETIME",
      "nullable": true,
      "default": null,
      "comment": "最后同步时间"
    },
    {
      "name": "sync_version",
      "type": "VARCHAR(32)",
      "nullable": true,
      "default": "",
      "comment": "Sage返回的版本标识"
    },
    {
      "name": "sync_status",
      "type": "VARCHAR(16)",
      "nullable": false,
      "default": "success",
      "comment": "同步状态: success/pending/failed"
    },
    {
      "name": "error_msg",
      "type": "TEXT",
      "nullable": true,
      "default": null,
      "comment": "失败原因"
    },
    {
      "name": "retry_count",
      "type": "INT",
      "nullable": false,
      "default": 0,
      "comment": "重试次数"
    },
    {
      "name": "created_at",
      "type": "DATETIME",
      "nullable": false,
      "default": "CURRENT_TIMESTAMP",
      "comment": "创建时间"
    },
    {
      "name": "updated_at",
      "type": "DATETIME",
      "nullable": false,
      "default": "CURRENT_TIMESTAMP",
      "comment": "更新时间"
    }
  ],
  "idxfields": [
    {
      "name": "idx_entity_type",
      "fields": [
        "entity_type"
      ],
      "unique": false
    },
    {
      "name": "idx_entity_type_id",
      "fields": [
        "entity_type",
        "entity_id"
      ],
      "unique": true
    },
    {
      "name": "idx_sync_status",
      "fields": [
        "sync_status"
      ],
      "unique": false
    }
  ],
  "codes": []
}