oracle中将驼峰格式转换为下划线格式

SELECT REGEXP_REPLACE('initCustMoney', '([[:upper:]])(.)', '_\1\2') "initCustMoney",
REGEXP_REPLACE('custID', '([[:upper:]])(.)', '_\1\2') "custID"
FROM DUAL;

select substr(replace(initcap('a' || 'init_cust_money'), '_', ''), 2) from dual;