1

任何人都可以帮助我提取我整理的以下代码。错误似乎出现在CASE语句中，但我无法看到 THEN 之后的所有代码部分都在哪里单独测试并工作。

另请注意，所有日期的datetime数据类型均为yyyy-mm-dd hh:mm:ss.sss

SELECT 
    TICKET_ID,
    CAL_CR.a_DayName,
    CREATED, 
    CAL_CL.a_DayName,
    CLOSED,
    CASE
        WHEN CAL_CR.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NULL THEN (DATEDIFF(WEEKDAY,created, closed)*10*60 - (DATEDIFF(MINUTE,CURRENT_TIMESTAMP,CAST(CAST(CAST(CURRENT_TIMESTAMP AS DATE) AS VARCHAR) + ' 18:00' AS DATETIME))))
        WHEN CLOSED IS NULL THEN (DATEDIFF(WEEKDAY,created, closed)*10*60 - (DATEDIFF(MINUTE,CAST(CAST(CAST(CREATED AS DATE) AS VARCHAR) + ' 08:30' AS DATETIME),CREATED)) - (DATEDIFF(MINUTE,CURRENT_TIMESTAMP,CAST(CAST(CAST(CURRENT_TIMESTAMP AS DATE) AS VARCHAR) + ' 18:00' AS DATETIME))))
        WHEN CAL_CR.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NOT NULL THEN (DATEDIFF(WEEKDAY,created, closed)*10*60 - (DATEDIFF(MINUTE,CLOSED,CAST(CAST(CAST(CLOSED AS DATE) AS VARCHAR) + ' 18:00' AS DATETIME))))
        WHEN CAL_CL.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NOT NULL THEN (DATEDIFF(WEEKDAY,created, closed)*10*60 - (DATEDIFF(MINUTE,CAST(CAST(CAST(CREATED AS DATE) AS VARCHAR) + ' 08:30' AS DATETIME),CREATED)))
        WHEN (CAL_CR.A_DATE IN ('Saturday','Sunday')) AND (CAL_CL.A_DATE IN ('Saturday','Sunday')) AND CLOSED IS NOT NULL THEN (DATEDIFF(WEEKDAY,created, closed)*10*60)
        ELSE (DATEDIFF(WEEKDAY,created, closed)*10*60 - (DATEDIFF(MINUTE,CAST(CAST(CAST(CREATED AS DATE) AS VARCHAR) + ' 08:30' AS DATETIME),CREATED)) - (DATEDIFF(MINUTE,CLOSED,CAST(CAST(CAST(CLOSED AS DATE) AS VARCHAR) + ' 18:00' AS DATETIME))))
    END AS Open_Minutes
FROM 
    OST_TICKET 
LEFT JOIN
    AMI_STATIC.DBO.SB_CALENDAR CAL_CR
    ON
        CAL_CR.a_Date = CAST(CREATED AS DATE)
LEFT JOIN
    AMI_STATIC.DBO.SB_CALENDAR CAL_CL
    ON
        CAL_CL.a_Date = CAST(CLOSED AS DATE)

非常感谢您的任何帮助。

谢谢德姆斯，

采纳您的建议并进一步整理代码。见下文：

SELECT 
    TICKET_ID,
    CAL_CR.a_DayName,
    CREATED, 
    CAL_CL.a_DayName,
    CLOSED,
    CASE
        WHEN CAL_CR.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NULL THEN DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST(CURRENT_TIMESTAMP AS TIME),CAST('18:00' AS TIME))
        WHEN CLOSED IS NULL THEN DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST('08:30' AS TIME),CAST(CREATED AS TIME)) - DATEDIFF(MINUTE,CAST(CURRENT_TIMESTAMP AS TIME),CAST('18:00' AS TIME))
        WHEN CAL_CR.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NOT NULL THEN DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST(CLOSED AS TIME),CAST('18:00' AS TIME))
        WHEN CAL_CL.A_DATE IN ('Saturday','Sunday') AND CLOSED IS NOT NULL THEN DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST('08:30' AS TIME),CAST(CREATED AS TIME))
        WHEN (CAL_CR.A_DATE IN ('Saturday','Sunday')) AND (CAL_CL.A_DATE IN ('Saturday','Sunday')) AND CLOSED IS NOT NULL THEN DATEDIFF(WEEKDAY,created, closed)*10*60
        ELSE DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST('08:30' AS TIME),CAST(CREATED AS TIME)) - DATEDIFF(MINUTE,CAST(CLOSED AS TIME),CAST('18:00' AS TIME))
    END AS Open_Minutes
FROM 
    OST_TICKET 
LEFT JOIN
    AMI_STATIC.DBO.SB_CALENDAR CAL_CR
    ON
        CAL_CR.a_Date = CAST(CREATED AS DATE)
LEFT JOIN
    AMI_STATIC.DBO.SB_CALENDAR CAL_CL
    ON
        CAL_CL.a_Date = CAST(CLOSED AS DATE)

仍然得到同样的错误：

将字符串转换为 smalldatetime 数据类型时转换失败。

这开始有点烦人了。

将代码分开仍然有效

SELECT 
    DATEDIFF(WEEKDAY,created, closed)*10*60 - DATEDIFF(MINUTE,CAST('08:30' AS TIME),CAST(CREATED AS TIME)) - DATEDIFF(MINUTE,CAST(CLOSED AS TIME),CAST('18:00' AS TIME))
FROM 
    OST_TICKET
WHERE 
    TICKET_ID = 30374

谢谢，

马库斯

4

1 回答 1

3

您将 DATETIME 转换为 VARCHAR，然后返回 DATETIME，例如这里...
-CAST(CAST(CAST(CURRENT_TIMESTAMP AS DATE) AS VARCHAR) + ' 18:00' AS DATETIME)

至少你需要指定一个尺寸；VARCHAR(16)而不仅仅是VARCHAR. 如果你不这样做，你实际上最多只能获得 1 个字符。

但是，同样，如果你将日期和时间转换为字符串来操纵它们，你几乎总是在做一些“错误”的事情。我会推荐一些更像...
-DATEADD(hour, 18, CAST(CURRENT_TIMESTAMP AS DATE))

于 2012-02-07T15:12:23.287 回答