十进制转36进制函数

create function [dbo].ufn_int2str36( @value int)
returns   varchar(20)
as  
begin

-- 转数字为36进制(数字+大写字母)的字符串

-- declare @value int 
-- set @value = 99999999

    DECLARE @radix int
    set @radix = 36
    DECLARE @seq CHAR(36)
    DECLARE @result VARCHAR(50)
    DECLARE @digit CHAR(1)
    
    -- SET @seq = '0123456789ABCDEF'
    SET @seq = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
    SET @result = SUBSTRING(@seq, (@value%@radix)+1, 1)
    
    --求十进制的@value除以的余数,找到余数对应进制的值
    WHILE @value > 0
    BEGIN
        SET @digit = SUBSTRING(@seq, ((@value/@radix)%@radix)+1, 1)
        SET @value = @value/@radix
        IF @value <> 0
            SET @result = @digit + @result
    END

    return    right( '00000000'+ @result,6)
END