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How to query date ranges with SQL

Posted on 2016-11-16
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Last Modified: 2016-11-16
Hello, can some help me understand how to query the below date ranges with MS SQL?

The field is called "myDate" . So if Today's date is 11/16/16.....

I need to get records that were created from midnight of the current day, through right now. (11/16/16 12AM - now)

Next, I need to get records created from midnight of the previous day, to records created at midnight of the current day. (11/15/16 12am - 11/15/16 23:59pm)

Next, I need to get records created between 2 days ago and 14 days ago. (11/2/16 12am - 11/13/16 23:59pm)

I know this is confusing, but can someone assist? Thank you.
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Question by:earwig75
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6 Comments
 
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Accepted Solution

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Vitor Montalvão earned 2000 total points
ID: 41889699
Would help if you post your query so we can work it out for you.
Anyway, basically this should do for you:
I need to get records that were created from midnight of the current day, through right now
SELECT *
FROM tablename
WHERE myDate BETWEEN CAST(GETDATE() AS DATE) AND GETDATE()

Open in new window


I need to get records created from midnight of the previous day, to records created at midnight of the current day
SELECT *
FROM tablename
WHERE myDate >= CAST(GETDATE()-1 AS DATE) AND myDate < CAST(GETDATE() AS DATE)

Open in new window


I need to get records created between 2 days ago and 14 days ago.
SELECT *
FROM tablename
WHERE myDate >= CAST(GETDATE()-14 AS DATE) AND myDate < CAST(GETDATE()-1 AS DATE)

Open in new window

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LVL 51

Expert Comment

by:Vitor Montalvão
ID: 41889703
Btw, the above only works for MSSQL 2012 and superior.
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Author Comment

by:earwig75
ID: 41889721
Thank you. I have one more question if you don't mind, because I am confused about how this works. If i needed the records for 15-30 Days, would I use:

 WHERE myDate >= CAST(GETDATE()-30 AS DATE) AND myDate < CAST(GETDATE()-14 AS DATE)

?
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LVL 51

Expert Comment

by:Vitor Montalvão
ID: 41889724
Yes, you got it ;)
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Author Closing Comment

by:earwig75
ID: 41889728
Perfect, thank you.
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LVL 52

Expert Comment

by:_agx_
ID: 41889961
Btw, the above only works for MSSQL 2012 and superior.

Good approach. FWIW, should work in 2008+.  IIRC, that is when data type DATE was added.
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