从 SQL 数据库 table 中获取重复对、三元组、四元组等？

Question

我有一张 table 来自波兰 Lotto Multi Multi 20/80 的图纸历史记录。因此，每行包含 20 列，数字范围为 1 到 80，行内没有重复数字。

在最后一次开奖中，有几张牌同时出现了 80 和 77（查看图片 link），但在 SQL 结果上似乎没有任何 80 或什至77 个数字，最大的是 nr2 列上的 63 个（查看图片 link 了解详情）。我正在尝试这段 SQL 查询代码，但似乎它并没有 "catch" 所有列，而是检查最大列号 10（在这种情况下最大列数为 63）并且它不会进一步到第 20 列（其中存储的最大可能数为 80）。

这是我使用的完整 SQL 查询代码：

CREATE TABLE IF NOT EXISTS unpivot AS
SELECT *
FROM (
        SELECT DrawId, N1 as n_value FROM draws union all
        SELECT DrawId, N2 as n_value FROM draws union all
        SELECT DrawId, N3 as n_value FROM draws union all
        SELECT DrawId, N4 as n_value FROM draws union all
        SELECT DrawId, N5 as n_value FROM draws union all
        SELECT DrawId, N6 as n_value FROM draws union all
        SELECT DrawId, N7 as n_value FROM draws union all
        SELECT DrawId, N8 as n_value FROM draws union all
        SELECT DrawId, N9 as n_value FROM draws union all
        SELECT DrawId, N10 as n_value FROM draws union all
        SELECT DrawId, N11 as n_value FROM draws union all
        SELECT DrawId, N12 as n_value FROM draws union all
        SELECT DrawId, N13 as n_value FROM draws union all
        SELECT DrawId, N14 as n_value FROM draws union all
        SELECT DrawId, N15 as n_value FROM draws union all
        SELECT DrawId, N16 as n_value FROM draws union all
        SELECT DrawId, N17 as n_value FROM draws union all
        SELECT DrawId, N18 as n_value FROM draws union all
        SELECT DrawId, N19 as n_value FROM draws union all
        SELECT DrawId, N20 as n_value FROM draws
     ) as T;

SELECT nr1, nr2, count(*) as total
FROM
    (
    SELECT up1.n_value as nr1, up2.n_value as nr2
    FROM unpivot up1
    JOIN unpivot up2
      ON up1.DrawId = up2.DrawId
     AND up1.n_value < up2.n_value
   ) T
GROUP BY nr1, nr2
ORDER BY nr2 desc;
-- LIMIT 300;

Repeating pairs into the database

Query results

Answer 1

我怀疑问题是：

 CREATE TABLE IF NOT EXISTS unpivot AS . . .

也就是说，您有旧版本的 table 并且没有创建新版本。

相反，执行：

DROP TABLE IF EXISTS unpivot;

然后：

CREATE TABLE unpivot AS . . .

从 SQL 数据库 table 中获取重复对、三元组、四元组等？

Get repeating pairs, triples, quadruples and so on from an SQL database table?

sql

sqlite

unpivot