oracle 字符转字符串函数

select cast('addd' as varchar(4)) from dual;…

花了点时间复习.了一下字符串函数希望对初学者有帮助 ----------连接字符串函数-----------------select concat('leiyi','hubei') from dual; -------------------------查找leiyi的位置并替换成后面的字符串---------------select translate('woshileiyi','leiyi','zhans') from dual; ----------------------------…

javascript 特定字符分隔字符串函数

function fn(num,div,token){//num需要分割的数字,div多少位分割 token分割字符 num=num+'',div=div||3,token=token||',' return num.replace(/\d/g,function(a,i,str){ var l=str.length%div; if(((i-l+1)%div==0&&i!==str.length-1)||i==l-1) return a+token; else return a; }); }…

WinAPI 字符及字符串函数(15): CharNext、CharPrev

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Button2: TButton; procedure Button1Click(Sender: TObject); pro…

WinAPI 字符及字符串函数(9): lstrcat - 合并字符串

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Button2: TButton; Button3: TButton; Button4: TButton; proc…

WinAPI 字符及字符串函数(5): IsCharAlpha - 是否是个字母

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Button2: TButton; Button3: TButton; Button4: TButton; Butt…

WinAPI 字符及字符串函数(10): lstrcpy - 复制字符串

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Button2: TButton; Button3: TButton; procedure Button1Click(Sen…

oracle如何去除字符串中的重复字符

create or replace function remove_rame_string(oldStr varchar2, sign varchar2) return varchar2 is /**************************************************** ** Oracle去掉重复字符串 ** 函数名称:RemoveSameStr ** 参数:[名称] [类型 ] [说明] ** oldStr varchar2 要处理的字符串 ** sign va…

C语言字符和字符串随记

==========================第11章字符和字符串函数==========================震惊:字符串常量属于静态存储类,常量引号中的内容作为指向该字符串存储位置的指针:printf("%s, %p, %c\n","we","are",*"young!");语句执行的结果如下:we, 0x4005e4, y 字符串的数组声明:char str[] = "string A&quo…

Oracle 去掉重复字符串

create or replace function remove_same_string(oldStr varchar2, sign varchar2) return varchar2 is /**************************************************** ** Oracle去掉重复字符串 ** 函数名称:RemoveSameStr ** 参数:[名称] [类型 ] [说明] ** oldStr varchar2 要处理的字符串 ** sign va…