阶段性更新

etl_billiards/database/operations.py

@@ -7,6 +7,7 @@ class DatabaseOperations:
     """数据库批量操作封装"""
     
     def __init__(self, connection):
+        self._connection = connection
         self.conn = connection.conn
     
     def batch_execute(self, sql: str, rows: list, page_size: int = 1000):
@@ -75,3 +76,24 @@ class DatabaseOperations:
         if isinstance(rec, dict):
             return bool(rec.get("inserted"))
         return False
+
+    # --- pass-through helpers -------------------------------------------------
+    def commit(self):
+        """提交事务（委托给底层连接）"""
+        self._connection.commit()
+
+    def rollback(self):
+        """回滚事务（委托给底层连接）"""
+        self._connection.rollback()
+
+    def query(self, sql: str, args=None):
+        """执行查询并返回结果"""
+        return self._connection.query(sql, args)
+
+    def execute(self, sql: str, args=None):
+        """执行任意 SQL"""
+        self._connection.execute(sql, args)
+
+    def cursor(self):
+        """暴露原生 cursor，供特殊操作使用"""
+        return self.conn.cursor()