摘要:
select count(*) from (select name from student group by name); 阅读全文
posted @ 2013-01-16 10:25 JasmineLiu 阅读(630) 评论(0) 推荐(0) 编辑
posted @ 2013-01-16 10:25 JasmineLiu 阅读(630) 评论(0) 推荐(0) 编辑
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