今天，对多个实体查询去重，发现直接用uniq就可以了，如:
Conversation.search(:params[:search]).uniq.paginate
就行了，而且有分页的效果，但是：查看后台日志中的sql语句，并没有看到其产生limit语句。为什么却实现了分页？
Created
September 1, 2010 07:10
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