Add identity column check and manage IDENTITY_INSERT state during sync

run_incremental_sync.py

@@ -15,6 +15,20 @@ LoggerManager("run_incremental_sync", log_prefix="incremental")
 uptime_monitor = UptimeKumaMonitor(UPTIME_KUMA_CONFIG)
 uptime_monitor.set_logger(log_warning)
 
+# ================= 辅助函数 =================
+
+def has_identity_column(sql_cursor, schema, table):
+    """检查表是否包含标识列"""
+    query = """
+        SELECT COUNT(*)
+        FROM sys.columns c
+        JOIN sys.tables t ON c.object_id = t.object_id
+        JOIN sys.schemas s ON t.schema_id = s.schema_id
+        WHERE s.name = ? AND t.name = ? AND c.is_identity = 1
+    """
+    sql_cursor.execute(query, (schema, table))
+    return sql_cursor.fetchone()[0] > 0
+
 # ================= 主逻辑 =================
 
 def process_sync_task():
@@ -141,13 +155,27 @@ def process_sync_task():
                     # 2. 插入
                     if new_rows:
                         insert_sql = db_utils.generate_insert_sql(target_schema, target_table, acc_cols)
-                        try: sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} ON")
-                        except: pass
-                        
+
+                        # 检查并启用 IDENTITY_INSERT
+                        has_identity = has_identity_column(sql_cursor, target_schema, target_table)
+                        identity_enabled = False
+
+                        if has_identity:
+                            try:
+                                sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} ON")
+                                identity_enabled = True
+                            except Exception as id_err:
+                                log_error(f"无法启用 IDENTITY_INSERT: {id_err}")
+                                raise
+
                         sql_cursor.executemany(insert_sql, new_rows)
-                        
-                        try: sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} OFF")
-                        except: pass
+
+                        # 关闭 IDENTITY_INSERT
+                        if identity_enabled:
+                            try:
+                                sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} OFF")
+                            except Exception as id_err:
+                                log_warning(f"关闭 IDENTITY_INSERT 时警告: {id_err}")
 
                     # 3. 标记日志 Synced = 1
                     log_placeholders = ','.join(['?'] * len(log_ids))
@@ -165,6 +193,11 @@ def process_sync_task():
                     file_total_records += len(record_ids)
 
                 except Exception as tbl_err:
+                    # 确保清理 IDENTITY_INSERT 状态
+                    try:
+                        sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} OFF")
+                    except:
+                        pass
                     log_error(f"表 [{acc_table}] 同步失败: {tbl_err}")
                     sql_conn.rollback()
                     file_error_count += 1