MySQL在insert時遇到“Incorrect integer value: '' for column 'idx' at row 1“

 在之前一篇blog中有提到mysql常用數據庫語句時，使用過以下語句：

insert into new_table select NULL,a.phone,name,age,address,NULL, b.birth
from students a, info_table b 
where studentnum in (
    '20180722121735',
    '20180721174759',
    '20180720103621',
    '20180718122414'
  ) and a.phone= b.phone

前兩天用時還挺好，換了一臺mysql服務器後就突然報錯，錯誤信息是“Incorrect integer value: '' for column 'idx' at row 1”，萬能的www一搜發現是mysql服務器版本不一樣導致，mysql版本到5以上的就會這樣，插入空字符要使用NULL，因此正確的語句應該是：

insert into new_table select NULL,a.phone,name,age,address,NULL, b.birth
from students a, info_table b 
where studentnum in (
    '20180722121735',
    '20180721174759',
    '20180720103621',
    '20180718122414'
  ) and a.phone= b.phone

僅記之