我有一个表格，其中的数据格式
+---------------------+-------------------------------------+--------+
| Start Time | Name | Result |
+---------------------+-------------------------------------+--------+
| 19/09/2018 00:02:06 | Kevin Jones | WIN |
| 19/09/2018 00:21:44 | Claire Miley | LOSE |
| 19/09/2018 01:07:54 | Claire Miley | FISH |
| 19/09/2018 01:16:40 | Kevin Jones | WIN |
| 19/09/2018 01:14:01 | Kevin Jones | RED |
| 19/09/2018 01:11:12 | Claire Miley | LOSE |
| 19/09/2018 01:28:37 | Claire Miley | LOSE |
| 19/09/2018 01:09:42 | Kevin Jones | LOSE |
| 19/09/2018 01:05:50 | Kevin Jones | WIN |
| 19/09/2018 01:29:52 | Martyn Jones | BLUE |
| 19/09/2018 01:01:01 | Claire Miley | RED |
| 19/09/2018 01:00:21 | Claire Miley | WIN |
| 19/09/2018 00:57:01 | Kevin Jones | SOCK |
| 19/09/2018 01:39:52 | Margaret Weir | WIN |
| 19/09/2018 00:54:06 | Margaret Weir | CALL |
| 19/09/2018 00:53:16 | Martyn Jones | LOSE |
| 19/09/2018 00:50:47 | Kevin Jones | FREE |
| 19/09/2018 00:48:40 | Martyn Jones | WIN |
| 19/09/2018 00:30:14 | Claire Miley | WIN |
| 19/09/2018 00:25:09 | Kevin Jones | LOSE |
| 19/09/2018 02:07:20 | Margaret Weir | FISH |
| 19/09/2018 02:07:30 | Martyn Jones | WIN |
| 19/09/2018 02:09:03 | Kevin Jones | RED |
| 19/09/2018 00:24:11 | Claire Miley | LOSE |
| 19/09/2018 00:17:42 | Kevin Jones | LOSE |
| 19/09/2018 02:15:21 | Kevin Jones | LOSE |
| 19/09/2018 02:19:10 | Martyn Jones | WIN |
| 19/09/2018 00:15:49 | Martyn Jones | BLUE |
| 19/09/2018 00:14:25 | Kevin Jones | RED |
| 19/09/2018 00:11:03 | Kevin Jones | WIN |
| 19/09/2018 00:10:10 | Claire Miley | SOCK |
| 19/09/2018 00:09:56 | Martyn Jones | WIN |
| 19/09/2018 00:05:24 | Martyn Jones | CALL |
| 19/09/2018 00:03:01 | Margaret Weir | LOSE |
| 19/09/2018 00:01:17 | Martyn Jones | FREE |
| 19/09/2018 01:18:46 | Kevin Jones | WIN |
| 19/09/2018 01:23:21 | Margaret Weir | WIN |
| 19/09/2018 01:28:51 | Kevin Jones | BLUE |
| 19/09/2018 01:29:34 | Kevin Jones | RED |
| 19/09/2018 01:07:54 | Claire Miley | WIN |
+---------------------+-------------------------------------+--------+
还有很多对问题不重要的列。我想弄清楚的是，谁目前拥有最长的连胜记录而其中没有一个是 WIN 结果，以及该连胜记录有多长。这是我可以在 SQL 中做的事情，还是在将原始数据提取到另一个程序后最好做的事情？
在这个示例数据中，我想要的结果是
Kevin Jones
5 results in a row without a WIN result
感谢马丁·史密斯
最佳答案
应该这样做 ( Demo )
WITH T
AS (SELECT *,
ROW_NUMBER()
OVER (
PARTITION BY [Name]
ORDER BY [Start Time]) - ROW_NUMBER()
OVER (
PARTITION BY [Name], Win
ORDER BY [Start Time]) AS Grp
FROM Table1
CROSS APPLY (SELECT IIF([Result] = 'WIN', 1, 0))CA(Win))
SELECT TOP 1 [Name],
count(*),
MIN([Start Time]) AS StreakStart,
MAX([Start Time]) AS StreakEnd
FROM T
WHERE Win = 0
GROUP BY [Name],
Grp
ORDER BY count(*) DESC
关于sql - 从表中确定 "longest X streak"(SQL Server 2018)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52408230/