sql字符串截取

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使用SUBSTR实现字符串截取：

 SUBSTR(string, Nstart, Nend) AS stringnew

比如：

（1）截取字符串前10位

string = '20190604080910'

Nbegin = 1

Nend = 10

SUBSTR(string, Nbegin, Nend) AS stringnew

则：

stringnew = '2019060408'

（2）截取字符串后6位

string = '20190604080910'

Nbegin = 9

Nend = 14

SUBSTR(string, Nbegin, Nend) AS stringnew

则：

stringnew = '080910'

文章来源: https://blog.csdn.net/weixin_41770169/article/details/90773166