如何选择列总和等于X的随机行 - MySQL

Question

当列的总和等于某个值时，如何选择表的随机行？ （MySQL的）

    Value : 3

    Name               Price
    ------------------------
    A                  1
    B                  2
    C                  1
    D                  3
    E                  2

我想得到所有可能性（A + B，D，E + C ......）。

我试过这样做：

SELECT * FROM table HAVING SUM(column) = 3 ORDER BY RAND();

感谢＆＃39; S Thibeault

Answer 1

您需要将表连接到自身以获取行对。

SELECT t1.name as name1, t1.price as price1, t2.name AS name2, t2.price AS price2
FROM yourTable AS t1
JOIN yourTable AS t2 ON t1.price + t2.price = 3
ORDER BY RAND()
LIMIT 1