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);