比较SQL Server表中的同一行

Question

如何显示结果，如印度与巴基斯坦，印度与斯里兰卡，印度与孟加拉国，孟加拉国与斯里兰卡，孟加拉国与巴基斯坦，巴基斯坦与斯里兰卡的结果如下表所示？

Teams
-------
India
Pakistan
Sri Lanka
Bangladesh

例如：

--Output:
Bangladesh vs. India
Bangladesh vs. Sri Lanka
Bangladesh vs. Pakistan
India vs. Sri Lanka
India vs. Pakistan
Pakistan vs. Sri Lanka

Answer 1

我猜你正在寻找不重复的团队比赛组合。请尝试以下：

CREATE TABLE temp
(
    Team VARCHAR(100)
)


INSERT INTO temp
VALUES ('India'),
('Bangladesh'),
('Sri Lanka'),
('Pakistan')


SELECT  t1.team + ' vs. ' + t2.team
FROM temp t1
CROSS JOIN  temp t2 
where t1.Team < t2.Team


DROP TABLE temp

    Result
    -----------
    India vs. Sri Lanka
    India vs. Pakistan
    Bangladesh vs. India
    Bangladesh vs. Sri Lanka
    Bangladesh vs. Pakistan
    Pakistan vs. Sri Lanka