SXING! info: MySQL Query Error

Time: 2018-3-24 3:58pm
Script: /classical.php

SQL: SELECT a.* FROM 9191mr_tieba.zxsq_topic as a left join 9191mr_tieba.zxsq_user as b on = b.username where a.recommend=1 and b.identity in(2,3) and a.class in (2,3) order by id desc limit 5;
Error: Array
Errno.: 42000

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