mysql 對varchar型數字排序

原創 xxt06097 2020-02-22 18:13

字段pageNum

1，6，9，11

 

希望排序順序爲1，6，9，11

但是實際排序爲1，11，6，9

 

後來發現是因爲pageNum這個字段是varchar類型的不是int型，所以排序會出問題。

 

網上的解決方法爲

order by pageNum+0

order by pageNum×1

 

不知道爲什麼order by pageNum×1 數據庫通不過

但是pageNum+0是好用的

xxt06097
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