示例1:统计A出现次数,大小写敏感c,不敏感i
select regexp_count ('c means Case insensitive matching','A','1','c') "count(A)" from dual
select regexp_count ('c means Case insensitive matching','A','1','i') "count(A)" from dual
结果分别为0,3
---查询/36.0或者/00.4或者/88/5在字段zb出现的次数
REGEXP_COUNT(zb,'/36\.0|/00\.4|/88\.5','1','c')
---统计除了;,以外其他的
regexp_count(whole,'[^;,]+') as cnt