Question

我有以下代码：

这是我的代码：

SELECT Datee, StartWeek, DATEADD(DAY, 6, StartWeek) AS EndWeek, (DayNo / 7) + 1 AS WeekNo
FROM t
CROSS APPLY (
    SELECT DATEADD(DAY, -CASE DATENAME(WEEKDAY, Datee)
        WHEN 'Thursday'  THEN 0
        WHEN 'Friday'    THEN 1
        WHEN 'Saturday'  THEN 2
        WHEN 'Sunday'    THEN 3
        WHEN 'Monday'    THEN 4
        WHEN 'Tuesday'   THEN 5
        WHEN 'Wednesday' THEN 6
    END, Datee) AS StartWeek
) AS ca1
CROSS APPLY (
    SELECT DATEADD(YEAR, DATEDIFF(YEAR, 0, StartWeek), 0) AS FDOY
) AS ca2
CROSS APPLY (
    SELECT DATEDIFF(DAY, FDOY, Datee) - CASE DATENAME(WEEKDAY, FDOY)
        WHEN 'Thursday'  THEN 0
        WHEN 'Friday'    THEN 6
        WHEN 'Saturday'  THEN 5
        WHEN 'Sunday'    THEN 4
        WHEN 'Monday'    THEN 3
        WHEN 'Tuesday'   THEN 2
        WHEN 'Wednesday' THEN 1
    END AS DayNo
) AS ca3

这就是我得到的：

print (start_timestamp)
start_timestamp_no_iso = datetime.strptime(start_timestamp, "%Y-%m-%dT%H:%M:%S.%f")

我了解这意味着什么，但我不明白为什么会发生。我只是将时间戳从iso格式转换为non iso。有什么问题吗？

Answer 1

您的格式字符串%Y-%m-%dT%H:%M:%S.%f是绝对正确的。我敢肯定，您在行尾有line feeds。尝试

start_timestamp_no_iso = datetime.strptime(start_timestamp.strip(' \t\r\n'), "%Y-%m-%dT%H:%M:%S.%f")

Python ValueError：保留未转换的数据：

1 个答案: