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SELECT * from TB1 A, TB2 B  
WHERE CHARINDEX(','+A.ID+',',','+'aaaaaa£¬bbbbb£¬cccccc'+',')>0

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SQL code:
SELECT COL,
COL1 = PARSENAME(REPLACE(COL,',','.'),3), ----Ìæ»»Ò»Ï '.' ÒòΪ parsename Ö»ÈÏ '.'
COL2 = PARSENAME(REPLACE(COL,',','.'),2),
COL3 = PARSENAME(REPLACE(COL,',','.'),1)
from TB


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ʹÓÃLIKE »òÕßcharindex ½øÐбíÁª½Ó »òÕßÏȲð·ÖÔÙÁª½Ó
SQL code:
--a±íΪԴ±í b±íΪÄãÒªÁª½ÓµÄ±í
select *
from a join b on
a.id like '%'+b.id+'%'


SQL code:

declare @a varchar(20)
set @a = '¿ì,¿ì,¿ì,¿ì,¿ì,aa'
declare @tb table(id int identity ,c varchar(10))
set @a=@a+','
declare @i int
set @i=charindex(',',@a)
while(@i>1)
begin
insert into @tb select left(@a,@i-1)
set @a=right(@a,len(@a)-@i)
set @i=charindex(',',@a)
end

select * from @tb





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