摘要:
select id,s1,length(s1),lengthb(s1),length(substr(s1,1,2)),lengthb(substr(s1,1,2)),length(substrb(s1,1,2)),lengthb(substrb(s1,1,2)) from ( select 1 id 阅读全文
摘要:
--全角转半角 select to_single_byte('44619900715Xw') from dual; --半角转全角 select to_multi_byte('44619900715Xw') from dual; --全角转半角 select to_single_byte('4461 阅读全文