create function f_union(@id varchar(20))
returns varchar(100)
as
begin
declare @sql varchar(100)
set @sql=''
select @sql=@sql+','+col_B from tb where col_a=@id
return(stuff(@sql,1,1,''))
end
goselect col_a,dbo.f_union(col_a) as col_b from tb group by col_a
returns varchar(100)
as
begin
declare @sql varchar(100)
set @sql=''
select @sql=@sql+','+col_B from tb where col_a=@id
return(stuff(@sql,1,1,''))
end
goselect col_a,dbo.f_union(col_a) as col_b from tb group by col_a
解决方案 »
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