first commit

db_utils.py

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+# db_utils.py
+import pyodbc
+import config
+
+def get_sql_conn():
+    """获取 SQL Server 连接"""
+    c = config.SQL_SERVER_CONN
+    # 显式添加 TrustServerCertificate=yes 以兼容 ODBC Driver 18+
+    conn_str = (
+        f"DRIVER={c['driver']};SERVER={c['server']};"
+        f"DATABASE={c['database']};UID={c['uid']};PWD={c['pwd']};"
+        "Encrypt=yes;TrustServerCertificate=yes;" 
+    )
+    return pyodbc.connect(conn_str)
+
+def get_access_conn(file_path):
+    """获取 Access 连接"""
+    conn_str = f"DRIVER={config.ACCESS_DRIVER};DBQ={file_path};"
+    return pyodbc.connect(conn_str)
+
+def fmt_table(schema, table):
+    """格式化 SQL Server 表名 [schema].[table]"""
+    return f"[{schema}].[{table}]"
+
+def get_columns(cursor, table_name):
+    """获取 Access 表的列名"""
+    # Access 查询表名加 []
+    cursor.execute(f"SELECT TOP 1 * FROM [{table_name}]")
+    return [column[0] for column in cursor.description]
+
+def generate_insert_sql(target_schema, target_table, columns):
+    """生成带架构的 INSERT 语句"""
+    full_table_name = fmt_table(target_schema, target_table)
+    col_str = ",".join([f"[{col}]" for col in columns])
+    placeholders = ",".join(["?"] * len(columns))
+    return f"INSERT INTO {full_table_name} ({col_str}) VALUES ({placeholders})"