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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 'and rht< order by listorder asc' at line 1

select * from category where class="" and lft> and rht< order by listorder asc

Filename: /home/wwwroot/cxszmd/wwwroot/models/model_category.php

Line Number: 117