十进制转换成二进制(如8转成1000)

alter proc prc_num @num bigint
as
declare @numstr varchar(50)
set @numstr=''
while (@num<>0)
begin
   set @numstr=@numstr+convert(char(1),@num%2)
   set @num=@num/2
end
select reverse(@numstr)


exec prc_num 8

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