oracle 推断字符是否为字母

create or replace function ischar(chr varchar2) return varchar2 is ischr varchar2(5); begin select case when ascii(chr) between 65 and 122 THEN 'true' else 'false' end into ischr from dual; return ischr; end;

一.buffer overflow,limit of 10000 bytesdeclarebeginfor c in 1..1000 loop dbms_output.put_line('测试测试测试');end loop;end;缓冲区默认大小为10000 bytes.循环1000次就一共有6000个汉字,也就是12000 bytes.在SQL窗口的输出标签页中设置缓冲区大小. 二.数字或值错误:字符串缓冲区太小declarev varchar2(100):='';beginfor c in

Oracle 分割字符查询 select * from view_psbaseinfo where DECODE('410782001125,411100000043', '', NULL, '410782001125,411100000043') IS NULL or PSCODE in (SELECT REGEXP_SUBSTR('410782001125,411100000043', '[^,]+', 1, LEVEL) AS PSCODE FROM DUAL CONNECT BY LEV

ALTER DATABASE character set INTERNAL_USE ZHS16GBK;  ALTER DATABASE CHARACTER SET ZHS16GBK;  oracle修改字符编码    1 1    打开命令窗口    2 2    查看当前字符编码    3 3    执行命令    4 oracle修改字符编码 打开命令窗口 sqlplus shybt/[email protected]:1521/orcl 查看当前字符编码 select userenv('l

oracle查看字符集和修改字符集 : 查看数据库服务器的字符集: select userenv('language') from dual ; 登陆用dba: 停掉数据库 : shutdown immediate; 启动数据库到mount状态下 : STARTUP MOUNT; ALTER SESSION SET SQL_TRACE=TRUE; ALTER SYSTEM ENABLE RESTRICTED SESSION; ALTER SYSTEM SET JOB_QUEUE_PROCESSE

//php获取中文字符拼音首字母 function getFirstCharter($str){ if(empty($str)){ return ''; } $fchar = ord($str{0}); if($fchar >= ord('A') && $fchar <= ord('z')){ return strtoupper($str{0}); } $s1=iconv('UTF-8','gb2312',$str); $s2=iconv('gb2312','UTF-8',$s

from:http://blog.csdn.net/chid/article/details/6166506 Linux 下更改 oracle 客户端字符集和服务端字符集 1.Linux 下更改 oracle 客户端字符集,即设置环境变量" NLS_LANG" 的值 查看客户端字符集,在终端下执行: echo $NLS_LANG 修改客户端字符集: sudo gedit /etc/environment 在environment 文件中增加以下内容: NLS_LANG="SI

Oracle 切割字符查询 select * from view_psbaseinfo where DECODE('410782001125,411100000043', '', NULL, '410782001125,411100000043') IS NULL or PSCODE in (SELECT REGEXP_SUBSTR('410782001125,411100000043', '[^,]+', 1, LEVEL) AS PSCODE FROM DUAL CONNECT BY LEV

//php获取中文字符拼音首字母 public function getFirstWord($str){ if(empty($str)){return '';} $fchar=ord($str{0}); if($fchar>=ord('A')&&$fchar<=ord('z')) return strtoupper($str{0}); $s1=iconv('UTF-8','gb2312',$str); $s2=iconv('gb2312','UTF-8',$s1); $s=$s