有时候会用到查询倒数第二条记录
代码如下: last=HolderChangeHistory.find_by_sql ([" SELECT * FROM holder_change_histories where treasure_id = ? order by id desc limit 1,1 ", @hch.treasure_id])
代码如下: select * from tablename a 代码如下:
select * from tb1 order by tb1.id desc limit 1,1;
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