Mysql學習-group by with rollup 函數 和order by field()自定義排序函數

今天看到同事的代碼，學習到了 group by with rollup 函數 和order by field()自定義排序函數html group by with rollup 函數 文章地址 https://www.cnblogs.com/Mr-Cxy/p/5923375.htmlweb order by field()自定義排序函數 文章地址 https://blog.csdn.net/u01

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