SQL Server:将Datetime2转换为时间（7）

我正在尝试比较

datetime2

和

time（7）

我需要帮助转换

datatime2

这就是我尝试过的：

DECLARE @PracticeStartTime time(7)
DECLARE @PracticeEndTime time(7)

SET @PracticeStartTime = (
    SELECT PBH.StartTime
    FROM PracticePractitioner AS PP WITH (NOLOCK)
    LEFT JOIN PracticeBusinessHours AS PBH WITH (NOLOCK)
        ON PBH.PracticeId = PP.PracticeId
    WHERE PP.PractitionerId = @PractitionerId
    )
SET @PracticeEndTime = (
    SELECT PBH.EndTime
    FROM PracticePractitioner AS PP WITH (NOLOCK)
    LEFT JOIN PracticeBusinessHours AS PBH WITH (NOLOCK)
        ON PBH.PracticeId = PP.PracticeId
    WHERE PP.PractitionerId = @PractitionerId
    )

IF (
    (
        CONVERT(@ScheduledStart AS TIME) BETWEEN @PracticeStartTime
            AND @PracticeEndTime
        )
    AND (
        CONVERT(@ScheduledEnd AS TIME) BETWEEN @PracticeStartTime
            AND @PracticeEndTime
        )
    )
BEGIN
    PRINT 'Time within practice hours';
END
ELSE
BEGIN
    RETURN - 1
END

你的语法不正确

我会使用

CAST

cast(@ScheduledStart as time(7))

您可以使用

CONVERT

convert(time(7), @ScheduledStart)

---

你有错误吗？这是MSSQL吗？@JChao sql错误：Msg 102，级别15，状态1，过程指定ByModalCreate，第57行“@ScheduledStart”附近语法不正确。