sql 执行语句函数

# sql 语句执行函数

def get_access(request):
   uid=request
   cursor=connection.cursor()
   cursor.execute("select a.username ,b.role_name,c.node_id,d.node_name from user a LEFT JOIN role b on a.role_id=b.id LEFT JOIN access c on b.id =c.node_id LEFT JOIN node d on c.node_id=d.id where a.id=%s"%uid)
   result=cursor.fetchall() # 列表形式返回
   return result