TSQL集理论

Question

这里是问题

你要用数字标记骰子边。每个骰子有6面。你有两个骰子。您必须标签，这样就可以显示（没有总结或产品）的数字0到31的完整输出：

00 
01 
02 
03 
04 
05 
06 
07 
08 
09 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 

我试图

(select 
     0 as dice1 union 
     select 1 union 
     select 2 union 
     select 3 union 
     select 4 union 
     select 5) 

    join 

(select 
     0 as dice2 union 
     select 1 union 
     select 2 union 
     select 3 union 
     select 4 union 
     select 5) 

我不知道如何进一步处理它。帮助表示赞赏。

Answer 1

正如马丁在他的评论中提到的，关键要解决这个问题是使用倒挂6一9参见：solution: calendar cubes

作为一个纲领性的T-SQL的解决方案，或许是：

declare @Dice1 table (
    side int 
) 

insert into @Dice1 
    (side) 
    select 0 union all 
    select 1 union all 
    select 2 union all 
    select 3 union all 
    select 4 union all 
    select 5 

declare @Dice2 table (
    side int 
) 

insert into @Dice2 
    (side) 
    select 0 union all 
    select 1 union all 
    select 2 union all 
    select 6 union all 
    select 7 union all 
    select 8 union all 
    select 9 /* Upside down 6 */ 


select CAST(d1.side as CHAR(1)) + CAST(d2.side as CHAR(1)) as MyDate 
    from @Dice1 d1 
     cross join @Dice2 d2 
    where d1.side * 10 + d2.side <= 31 
union 
select CAST(d2.side as CHAR(1)) + CAST(d1.side as CHAR(1)) as MyDate 
    from @Dice1 d1 
     cross join @Dice2 d2 
    where d2.side * 10 + d1.side <= 31 
order by MyDate