更新多行:update XX set XX=XX where xx=xx (set和where联合更改某一行)
添加1行: insert into XX values
删除1行: delete from XX
子查询:where 和 in 联合
posted on 2017-04-11 10:34 飞鸟各投林 阅读(139) 评论(0) 编辑 收藏 举报
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