用于选择从昨天的特定日期/时间到当天的特定日期/时间的范围的 SQL 查询

Question

SELECT * 
FROM services 
WHERE service_date BETWEEN (dateadd(DD, -1, getdate())) AND (dateadd(DD, 1, getdate())) **---Gives us a last one day data.**

but what we really need is data from 07:00 AM yesterday to 06:59 AM current day, so I tried the following:

SELECT * 
FROM services 
WHERE service_date BETWEEN (dateadd(DD, -1,((DatePart(hh, getdate())) >= 7 ))) **-- Expecting to pull from yesterday 07:00** 
                   AND (dateadd(DD, -1,((DatePart(hh, getdate())) <= 6 ))) **-- to current day till 06:59**

but the system didn't like my SQL skills ...PLEASE HELP...!

Answer 1

These will get you the dates you are looking for...

Select DATEADD(HOUR,-17, (DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)))


Select DATEADD(HOUR,7, (DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)))

I'm not sure if this is the most effective way but it works.

Answer 2

Assuming you are on SQL Server:

Select *
From MyTable
Where MyDateColumn Between DATEADD(hh, 7, Cast(Cast(DATEADD(d, -1, CURRENT_TIMESTAMP) As Date) As DateTime)) 
                       And DATEADD(hh, 6, Cast(Cast(CURRENT_TIMESTAMP As Date) As DateTime))

Answer 3

UPDATE: I agree with Andy's solution. Similar approach but his solution is much more elegant and efficient.

Try something like that:

SELECT * 
FROM services 
WHERE service_date
      BETWEEN Convert(DateTime, Convert(nchar(4), DatePart(YYYY, GETDATE())) + '-' 
+ Convert(nchar(2), DATEPART(MM, GETDATE())) + '-' 
+ Convert(nchar(2), DATEPART(DD, Getdate())-1) + ' 7:00:00')
      AND Convert(DateTime, Convert(nchar(4), DatePart(YYYY, GETDATE())) + '-' 
+ Convert(nchar(2), DATEPART(MM, GETDATE())) + '-' 
+ Convert(nchar(2), DATEPART(DD, Getdate())) + ' 6:59:00')

The idea is to take the year, month and day from today (or yesterday), and form a new date by concatenate them.

Beware of the culture settings for date format and do some testing before put this code into production.

Answer 4

You could also use mi (minutes) with DateAdd . Adding 419 minutes to midnight to get 06:59 and a nice round 420 minutes to yesterday midnight for 07:00

Edit : Changed the DateDiff function to work with Sybase.

SELECT *
FROM services
WHERE service_date BETWEEN DATEADD(mi, 420, DATEADD(d, -1, DATEDIFF(d, DATE('1900-01-01'), GETDATE()))) 
                       AND DATEADD(mi, 419, DATEADD(d, -0, DATEDIFF(d, DATE('1900-01-01'), GETDATE())));

Edit : Removing DateDiff function

SELECT *
FROM services
WHERE service_date BETWEEN DATEADD(mi, 420, DATEADD(d, - 1, Convert(VARCHAR(10), GETDATE(), 111)))
                       AND DATEADD(mi, 419, DATEADD(d, - 0, Convert(VARCHAR(10), GETDATE(), 111)));