无法使用flask框架pymysql查询数据

Can't query data using flask framework pymysql

pythonflask框架下无法使用pymy查询数据sql:

def sql_query (commit_ip):
    with db.cursor() as cursor:
        sql = "select client_ip, result, date_time from ipset where client_ip = 'commit_ip'"
        cursor.execute (sql)
        dict_ipset = cursor.fetchall ()
        return dict_ipset

变量commit_ip需要替换为具体IP后才能查询。 date_time也是如此。 client_ip的数据类型是char(15)。这个sql应该怎么写?

您应该将变量值作为元组作为第二个参数传递给执行。来自 PyMySql's doc 的示例:

    sql = "SELECT `id`, `password` FROM `users` WHERE `email`=%s"
    cursor.execute(sql, ('webmaster@python.org',))

所以对你来说是:

    sql = "select client_ip, result, date_time from ipset where client_ip = %s"
    cursor.execute(sql, (commit_ip,))