我想定义一个oracle的函数，完成以下功能：3w0d: %CONTROLLER-5-UPDOWN: Controller E1 0/0/6, changed state to up
上面的字符串截取％后面的字符串返回，思路倒是有，就是不熟悉oracle的写法，请大家帮忙！
------解决方案--------------------
select substr( '3w0d: %CONTROLLER-5-UPDOWN: Controller E1 0/0/6, changed state to up ',
instr( '3w0d: %CONTROLLER-5-UPDOWN: Controller E1 0/0/6, changed state to up ', '% ')+1)
from dual