MySQL 字符串截取

substring_index(input,split,index)：input为要截bai取du的字符，split为分隔符，Index为要截取第index个分隔符左（index为正）或右(index为负zhi)的字符串。

举例dao：

'Provider="RiskManagement" finalScore="65" RGID="100397278"' //获取finalScore的值

1、获取finalScore右边的字符

select substring_index('Provider="RiskManagement" finalScore="65" RGID="100397278"','finalScore="',-1);

2、再获取" RGID="左边的字符

select substring_index(substring_index('Provider="RiskManagement" finalScore="65" RGID="100397278"','finalScore="',-1),'" RGID="',1);