摘要:
查询所有列1.select * from info查特定列2.select code,name from info查出列后加别名,再查姓名3.select code as '代号',name as '姓名' from info条件查询,单条件查询4.select * from info where 阅读全文
posted @ 2016-12-05 09:54
风中摇曳的小花朵
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