Question

我正在使用datediff来区分两个日期时间：

DATEDIFF(hh, CAST(CAST(dbo.QuickLabDump.[Date Entered] AS DATE) AS DATETIME) 
    + CAST(dbo.QuickLabDump.[Time Entered] AS TIME), 
   CAST(CAST(dbo.QuickLabDump.[Date Completed] AS DATE) AS DATETIME) 
    + CAST(dbo.QuickLabDump.[Time Completed] AS TIME)) AS [Hours TurnAround]

我不明白我从这句话中得到的行为，但我需要的是>= :30, round up, if not, round down,

问题如何在不到30分钟时将其向下舍入，如果大于或等于30分钟则将时间向上舍入？

Answer 1

您应该在几分钟内计算DATEDIFF，然后执行ROUND：

ROUND(CAST(DATEDIFF(MINUTES, CAST(CAST(dbo.QuickLabDump.[Date Entered] AS DATE) AS DATETIME) 
                      + CAST(dbo.QuickLabDump.[Time Entered] AS TIME), CAST(CAST(dbo.QuickLabDump.[Date Completed] AS DATE) AS DATETIME) 
                      + CAST(dbo.QuickLabDump.[Time Completed] AS TIME)) AS FLOAT)/60,0)  AS [Hours TurnAround]

DATEDIFF四舍五入到最近的30分钟

1 个答案: