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可执行任意进制转换，2进制，8进制，32进制，36进制，进制数依赖于所能表示的字典数，如下'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' 36个字母，最大是36进制，下面关键一句是SET @alldigits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'，用取字符串位置的方式得到结果。
IF OBJECT_ID('dbo.DecToBase') IS NOT NULLDROP FUNCTION dbo.DecToBase;GO
CREATE FUNCTION dbo.DecToBase(@val  BIGINT,@base  INT)RETURNS VARCHAR(63)ASBEGIN
    DECLARE @r AS VARCHAR(63),@alldigits AS VARCHAR(36)
    SET @alldigits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'    SET @r = ''
    WHILE @val > 0    BEGIN
        SET @r = SUBSTRING(@alldigits,@val%@base+1,1) + @r
        SET @val = @val / @base    END    RETURN @rENDgo