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Oracle中的substr方法

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2016-06-07 17:20:301209browse

oracle中的substr比较给力,以字符串abcde为例

Oracle中的substr比较给力,以字符串abcde为例

select substr('abcde',1,3) as str from dual

结果abc

select substr('abcde',3,5) as str from dual

结果cde

select substr('abcde',3,50) as str from dual

不报错,结果cde

从1开始,,到几就是第几位,简单易用

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