发生了一个数据库错误

Error Number: 1064

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 '-30, 15' at line 5

SELECT * FROM `s_articles` WHERE `catalog_id` = '45' ORDER BY `is_top` desc, `published_at` desc, `id` desc LIMIT -30, 15

Filename: core/BaseModel.php

Line Number: 104