oracle 不支持 =和!=
摘要:
-- Created on 2012/11/20 by JWW declare -- Local variables here i integer := 2; j integer := 2; k varchar2(60); op varchar2(45);begin -- Test statements here k := ''; if (i = j and k = '') then --能不能输出 op := 'k = ""有结果'; else op := 'k is null有结果'; end if;end 阅读全文
posted @ 2012-11-20 23:37 lovebeauty 阅读(537) 评论(0) 推荐(0) 编辑