11.25 MySQL学习记录
摘要：
select * from world.country; /*新建一列，upper将文本全部转为大写 lower全部转为小写*/select district, upper(district) as district_upcasefrom world.cityorder by district; / 阅读全文
posted @ 2017-11-25 11:31 vincenthe1 阅读(91) 评论(0) 推荐(0)
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