摘要: create or replace function f_op (p_n1 number , p_op varchar2 , p_n2 number ) return number as begin return case when p_op = '+' then p_n1 + p_n2 when 阅读全文
posted @ 2016-09-26 13:41 董永辉Bruno 阅读(190) 评论(0) 推荐(0) 编辑