摘要: 1.ASCII返回与指定的字符对应的十进制数;SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual; A A ZERO SPACE--------- --------- --------- -... 阅读全文
posted @ 2014-12-02 15:35 劃云 阅读(182) 评论(0) 推荐(0) 编辑