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SQL ×Ö·û´®²ð·Ö

       ÓÐÕâÑùÒ»¸ö×Ö·û´®(ÖÐ,¹ú,ÖÐ,ÈËÃñ,¹ú,ÏÖ´ú¹¤Òµ»¯½ø³Ì,¹ú)
´¦Àí¹ýÖ®ºó±ä³É(ÖÐ,¹ú,ÈËÃñ,ÏÖ´ú¹¤Òµ»¯½ø³Ì)
 
        ÒÔÏÂÊÇÎҵķ½·¨,ÓÐʲô²»¶ÔµÄµØ·½»¹Çë¸÷λָµã
 ------------------ɾ³ýÖØ¸´µÄ×Ö·û
 declare
@v1 nvarchar
(100)
declare
@v2 nvarchar
(100)
declare
@v3 nvarchar
(100)
declare 
@split nvarchar
(100)
--N',,,,,ÖÐ,¹ú,ÖÐ,ÈËÃñ,,,,,¹ú,ÏÖ´ú¹¤Òµ»¯½ø³Ì,¹ú,,,'
set
@v1=N',  ,,     ,,ÖÐ,¹ú,ÖÐ,ÈËÃñ,  ,, ,    ,¹ú,ÏÖ´ú¹¤Òµ»¯½ø³Ì,¹ú,  ,,'
set
@v3=''
set
@split=','
/*
   @v1 :´æ´¢ÁÙʱ×Ö·û´®
   @v2 :»ñÈ¡Á½¸ö·Ö¸ô·ûÖеÄ×Ö·û´®
   @v3 :´æ´¢×îºóûÓÐÖØ¸´µÄ×Ö·û´®  
*/
if
left(@v1,1)<>@split
   set
@v1=@split+@v1
if
right(@v1,1)<>@split
   set
@v1=@v1+@split
while
len(@v1)>len(@split)*2
      begin
          set
@v2=substring
(@v1,len( @split),charindex
( @split,@v1,len
( @split)+1))
         if
len(@v2)>len
(@split)*2
            begin
              set
@v2=right
(@v2,len(@v2)-1);
              if
ltrim
(rtrim
(@v2))<>@split                
                 set
@v3=@v3+ltrim
(rtrim
(@v2));
              set
@v1= replace
(@v1,@v2,'')
            end
         else
--Èç¹ûÓÐÁ¬ÐøµÄ·Ö¸î·û,ɾ


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