分離字符，特殊字符，電子郵件編號

Question

嗨，大家回來一個有趣的問題。

假設我們有一個電子郵件ID是這樣的： -

Adventure2008Works.DW@microsoft.com

所以，現在的問題是拆分那些字符，特殊字符，數字，顯示他們在 在三個單獨的列如下所示。

Character      | Special Character | Numbers 
_____________________________________________________________ 
AdventureWorksDWmicrosoftcom | .@.    | 2008 

Answer 1

下面是函數：

create function f_tst 
(
@txt nvarchar(1000) 
) returns table 
as 
return (with x as 
(
select case when substring(@txt, number, 1) like '[a-zA-Z]' then substring(@txt, number, 1) 
else '' end a, 
case when substring(@txt, number, 1) like '[0-9]' then substring(@txt, number, 1) 
else '' end b, 
case when substring(@txt, number, 1) NOT like '[a-zA-Z0-9]' then substring(@txt, number, 1) 
else '' end c 
from 
master..spt_values 
where type = 'P' 
and number < len(@txt) 
) 

select distinct(select [a] 
     from x t1 
     for xml path(''), type 
    ).value('.', 'varchar(max)') [Character], 
    (select [c] 
     from x t1 
     for xml path(''), type 
    ).value('.', 'varchar(max)') [Special Character] , 
    (select [b] 
     from x t1 
     for xml path(''), type 
    ).value('.', 'varchar(max)') [Numbers] 
from x t) 

go 

您可以測試一行是這樣的：

declare @t table(txt nvarchar(1000)) 
insert @t values 
('Adventure2008Works.DW@microsoft.com'), 
('Adventure2008Wo12ks.DW@"t...') 

select * from @t cross apply dbo.f_tst(txt) 

結果：

select * from f_tst('Adventure2008Works.DW@microsoft.com') 

可以從這樣的表中獲取的列：

txt         Character    Special Character Numbers 
Adventure2008Works.DW@microsoft.com AdventureWorksDWmicrosoftco .@.   2008 
Adventure2008Wo12ks.DW@"t...  AdventureWoksDWt   .@"..   200812 

Answer 2

我會在.NET RegEx類上創建CLR包裝。這裏是an example。

Answer 3

你可以試試這個，

DECLARE @strAlphaNumericMain VARCHAR(256) 
DECLARE @strAlphaNumeric VARCHAR(256) 
DECLARE @Expr1 VARCHAR(255), @Expr2 VARCHAR(255), @Expr3 VARCHAR(255) 
DECLARE @OnlyCharacter VARCHAR(MAX),@OnlyNumber VARCHAR(MAX),@OnlySplChar VARCHAR(MAX) 

SET @strAlphaNumericMain = 'Adventure2008Works.DW@microsoft.com' 
SET @strAlphaNumeric = 'Adventure2008Works.DW@microsoft.com' 
SET @Expr1 = '%['+'@.'+']%' 
SET @Expr2 = '%['+'a-z0-9'+']%' 
SET @Expr3 = '%['+'^0-9'+']%' 

WHILE PatIndex(@Expr1, @strAlphaNumeric) > 0 
SET @strAlphaNumeric = Stuff(@strAlphaNumeric, PatIndex(@Expr1, @strAlphaNumeric), 1, '') 
SET @OnlyCharacter = @strAlphaNumeric 

SET @strAlphaNumeric = @strAlphaNumericMain 
WHILE PatIndex(@Expr2, @strAlphaNumeric) > 0 
SET @strAlphaNumeric = Stuff(@strAlphaNumeric, PatIndex(@Expr2, @strAlphaNumeric), 1, '') 
SET @OnlyNumber = @strAlphaNumeric 

SET @strAlphaNumeric = @strAlphaNumericMain 
WHILE PatIndex(@Expr3, @strAlphaNumeric) > 0 
SET @strAlphaNumeric = Stuff(@strAlphaNumeric, PatIndex(@Expr3, @strAlphaNumeric), 1, '') 
SET @OnlySplChar = @strAlphaNumeric 

SELECT @strAlphaNumericMain, @OnlyCharacter,@OnlyNumber,@OnlySplChar 

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