Mysql 中怎麼把輸出的浮點數轉換成百分比形式

原創 lian_li 2020-07-02 18:53


concat(truncate(royalties * 100,2),'%')


  TRUNCATE(X,D)；返回被捨去至小數點後D位的數字X。
  若D 的值爲 0, 則結果不帶有小數點或不帶有小數部分。

  可以將D設爲負數,若要截去(歸零) X小數點左起第D位開始後面所有低位的值.


concat爲mysql的系統函數，連接兩個字符串；






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