数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order by ordering desc limit 20' at line 1]
select * from demo_product where channelId=551 and spec= order by ordering desc limit 20
数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order by ordering desc limit 5' at line 1]
select * from demo_product where channelId=549 and spec= order by ordering desc limit 5