小编yun*_*ark的帖子

我在 SQLite 中对Codility / 练习 6 SQL / SqlEventsDelta 的解决方案在本地数据库浏览器中有效，但在在线 Codility 测试编辑器中无效。我该如何解决这个问题？我想使用我自己的 SQLite 代码：

WITH cte1 AS
(
    SELECT *, CASE WHEN e2.event_type = e2.prev THEN 0
                 WHEN e2.event_type = e2.next THEN 0
                 ELSE 1 END AS grp
    FROM (SELECT *, LAG(e1.event_type) OVER(ORDER BY (SELECT 1)) AS prev , LEAD(e1.event_type) OVER(ORDER BY (SELECT 1)) AS next FROM events e1) e2
)
,cte2 AS
(
    SELECT cte1.event_type, cte1.time, cte1.grp, cte1.value - LAG(cte1.value) OVER(ORDER BY cte1.event_type, cte1.time) AS value
    FROM …