Question

我正在使用Microsoft SQL Server，我有3列：

Server                    State                     Date
SRV1                      True                      2019-01-01
SRV2                      False                     2019-01-01
SRV3                      False                     2019-01-01
SRV4                      True                      2019-01-01
SRV5                      False                     2019-01-01
SRV1                      True                      2019-01-02
SRV2                      True                      2019-01-02
SRV3                      False                     2019-01-02
SRV4                      True                      2019-01-02
SRV5                      False                     2019-01-02
SRV1                      True                      2019-01-03
SRV2                      False                     2019-01-03
SRV3                      False                     2019-01-03
SRV4                      True                      2019-01-03
SRV5                      True                      2019-01-03

如果服务器连续30天处于False状态，则我添加一列Alive否：

Server                    State                     Date               Alive
SRV1                      True                      2019-01-01         Yes
SRV2                      False                     2019-01-01         Yes
SRV3                      False                     2019-01-01         No
SRV4                      True                      2019-01-01         Yes
SRV5                      False                     2019-01-01         Yes
SRV1                      True                      2019-01-02         Yes
SRV2                      True                      2019-01-02         Yes
SRV3                      False                     2019-01-02         No
SRV4                      True                      2019-01-02         Yes
SRV5                      False                     2019-01-02         Yes
SRV1                      True                      2019-01-03         Yes
SRV2                      False                     2019-01-03         Yes
SRV3                      False                     2019-01-03         No
SRV4                      True                      2019-01-03         Yes
SRV5                      True                      2019-01-03         Yes

这里只有SRV3处于非活动状态，因为它的状态连续3天为False。

如何连续30天获得此输出？

Answer 1

检查此。请注意30天是固定的，并且在查询中使用了两次。如果要在不同的时间段上应用相同的逻辑，则需要在脚本中更改两个静态数字。

SELECT *, 
CASE 
    WHEN (
        SELECT COUNT(State) 
        FROM your_table B 
        WHERE B.State = 'False' 
        AND B.Server = A.Server 
        AND (B.Date BETWEEN DATEADD(DD,-30,A.Date)  AND A.Date)
    ) =30 THEN 'No'
    ELSE 'Yes'
END Alive
FROM your_table A
ORDER BY 1,3

Answer 2

尝试一下，可能有助于解决问题

with open(fig_file, "r") as f:
        for line in f:
            fields = line.split(" ")
            field1 = fields[0]
            print(field1)

with open("list.txt","w") as wp:
        wp.write(field1)

如何连续30天获取信息？

2 个答案: