從查詢

Question

返回了你們對這裏的幫助DateTime值刪除時，我有以下SQL查詢：

SELECT DataLog.TimestampUTC,MeterTags.Name,DataLog.Data 
FROM DataLog 
INNER JOIN MeterTags 
ON DataLog.MeterTagId = MeterTags.MeterTagId 
WHERE DataLog.TimeStampUTC between cast(getdate() - 1 as date) and cast(getdate() as date) and 
     DataLog.MeterTagId Between 416 AND 462; 

這將返回一列「TimestampUTC」以YYYY-MM-DD HH：MM ：SS。我想把時間放在這一欄內，只顯示YYYY-MM-DD。

你可以給任何幫助將非常感激。

在此先感謝。

Answer 1

SELECT convert(char(10), DataLog.TimestampUTC, 120) as TimestampUTC, 
MeterTags.Name,DataLog.Data 
FROM DataLog 
INNER JOIN MeterTags 
ON DataLog.MeterTagId = MeterTags.MeterTagId 
WHERE DataLog.TimeStampUTC between cast(getdate() - 1 as date) and cast(getdate() as date) and 
     DataLog.MeterTagId Between 416 AND 462; 

Answer 2

在SQL Server中，你可以轉換爲Date

select Convert(Date, Convert(datetime, '2013/01/01 12:53:45')) 

結果：

2013-01-01 

Answer 3

你應該使用： CAST(DataLog.TimestampUTC as date)

代碼如下：

SELECT CAST(DataLog.TimestampUTC as date),MeterTags.Name,DataLog.Data 
FROM DataLog 
INNER JOIN MeterTags 
ON DataLog.MeterTagId = MeterTags.MeterTagId 
WHERE DataLog.TimeStampUTC between cast(getdate() - 1 as date) and cast(getdate() as date) and 
     DataLog.MeterTagId Between 416 AND 462;