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111111 ´ú±í == >> abcdef

create table a
(
id int not null,
FileName varchar(100) not null
)

insert into a values(1,'010101')
insert into a values(2,'100010 ')
insert into a values(3,'111100')

Æ©Èç:ÊäÈëÒ»¸ö FileNameµÄֵΪ 010101 --->>b;d;f

Èç:
select funs('010101') from a;
/**
b;d;f
*/

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SQL code:
case when substing(FileName,1,1)=0 then '' else 'a' end +';'+
case when substing(FileName,2,1)=0 then '' else 'b' end +';'+
case when substing(FileName,3,1)=0 then '' else 'c' end +';'+
......


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SQL code
case when substing(FileName,1,1)=0 then '' else 'a' end +';'+
case when substing(FileName,2,1)=0 then '' else 'b' end +';'+
case when substing(FileName,3,1)=0 then '' else 'c' end +';'+
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