对号码进行分类的触发器

   在项目中用到的对号码的类别进行识别，如：AAAA,ABAB等待。
   保留以备后用。

SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO

CREATE TRIGGER [testTrigger] ON [dbo].[Phone] 
FOR INSERT, UPDATE
AS
declare     @Level2 char(10),
    @Level3 char(10),
    @phone char(11),
    @first             char(1),
         @second       char(1),
         @third            char(1),
         @last              char(1)

select @phone=phonenum from inserted
select @first = substring(@phone,8,1)
select @second = substring(@phone,9,1)
select @third = substring(@phone,10,1)
select @last = substring(@phone,11,1)




            -- 普号无4
            if (charindex('4', @phone )=0)
            begin
                set @Level2='普号'
                set @Level3='无4'
            end
                       --差号含4
            if (charindex('4', @phone)!=0)
            begin
                set @Level2='差号'
                set @Level3='号码含4'
            end

        --差号尾数含4
            if (charindex('4', substring(@phone,8,5) )!=0)
            begin
                set @Level2='差号'
                set @Level3='尾数含4'
            end
            --134
            if (substring(@phone,0,4) ="134")
            begin
                set @Level2='差号'
                set @Level3='134号段'
            end




                
            --ABAB
            if (@first=@third and @second=@last and @first<>@second )
            begin
                set @Level2='特号'
                set @Level3='ABAB'
            end
    
                                --AABB
            if (  @first=@second and @third=@last and @first<>@third )
            begin
                set @Level2='特号'
                set @Level3='AABB'
            end


            --ABC
            if (  convert(int,@last)=convert(int,@third)+1 and convert(int,@third)=convert(int,@second)+1  and  charindex('4',@phone)=0)
                begin
                    set @Level2='优选号码'
                    set @Level3='ABC'
                end
            

            --ABCD
            if ( convert(int,@last)=convert(int,@third)+1 and convert(int,@third)=convert(int,@second)+1 and convert(int,@second)=convert(int,@first)+1 )
            begin
                set @Level2='特号'
                set @Level3='ABCD'
            end
            
            

            --AAAB
            if (@first=@second and @second=@third and @third<>@last and  charindex('4',@phone)=0)
            begin
                set @Level2='优选号码'
                set @Level3='AAAB'
            end

            --ABBA
            if (@first=@last and @second=@third and @first<>@second and  charindex('4',@phone)=0)
            begin
                set @Level2='优选号码'
                set @Level3='ABBA'
            end


            --AA
            if (@third=@last and  charindex('4',@phone)=0)
                begin
                    set @Level2='优选号码'
                    set @Level3='AA'
                end
            
            --AAA
                if (@second=@third and @third=@last)
                begin
                    set @Level2='特号'
                    set @Level3='AAA'
                end

            --AAAA
            if (@first=@second and @second=@third and @third=@last)
            begin
                set @Level2='特号'
                set @Level3='AAAA'
            end
            






update phone set phone.hlr=PhoneNumLevel1.hlr,level1=ModelNum,level2=@level2,level3=@level3 
from PhoneNumLevel1 INNER JOIN phone on 
 right(NumRange,7)=left(phonenum,7)  where phonenum=@phone

GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO