函数
REGEXP_SUBSTR函数格式如下:
function REGEXP_SUBSTR(String, pattern, position, occurrence, modifier)
__srcstr...select regexp_substr('60,70,80,90,100','[^,]+',1,1) result from dual; --60
select regexp_substr('60,70,80,90,100...','[^,]+',1,2) result from dual; --70
select regexp_substr('60,70,80,90,100','[^,]+',1,3) result from...dual; --80
select regexp_substr('60,70,80,90,100','[^,]+',4,1) result from dual; --70
select regexp_substr...^,]+', 1, LEVEL) AS STUDENT,
regexp_substr(temp.SUBJECT, '[^,]+', 1, LEVEL) AS SUBJECT,
regexp_substr