SQL query to select dates between two dates

Question

I have a start_date and end_date. I want to get the list of dates in between these two dates. Can anyone help me pointing the mistake in my query.<

Answer 1

Try this:

select Date,TotalAllowance from Calculation where EmployeeId=1
             and [Date] between '2011/02/25' and '2011/02/27'

The date values need to be typed as strings.

To ensure future-proofing your query for SQL Server 2008 and higher, Date should be escaped because it's a reserved word in later versions.

Bear in mind that the dates without times take midnight as their defaults, so you may not have the correct value there.

Answer 2

Since a datetime without a specified time segment will have a value of date 00:00:00.000, if you want to be sure you get all the dates in your range, you must either supply the time for your ending date or increase your ending date and use <.

select Date,TotalAllowance from Calculation where EmployeeId=1 
and Date between '2011/02/25' and '2011/02/27 23:59:59.999'

OR

select Date,TotalAllowance from Calculation where EmployeeId=1 
and Date >= '2011/02/25' and Date < '2011/02/28'

OR

select Date,TotalAllowance from Calculation where EmployeeId=1 
and Date >= '2011/02/25' and Date <= '2011/02/27 23:59:59.999'

DO NOT use the following, as it could return some records from 2011/02/28 if their times are 00:00:00.000.

select Date,TotalAllowance from Calculation where EmployeeId=1 
and Date between '2011/02/25' and '2011/02/28'

Answer 3

we can use between to show two dates data but this will search the whole data and compare so it will make our process slow for huge data, so i suggest everyone to use datediff:

qry = "SELECT * FROM [calender] WHERE datediff(day,'" & dt & "',[date])>=0 and datediff(day,'" & dt2 & "',[date])<=0 "

here calender is the Table, dt as the starting date variable and dt2 is the finishing date variable.

Answer 4

Select 
    * 
from 
    Calculation 
where 
    EmployeeId=1 and Date between #2011/02/25# and #2011/02/27#;

Answer 5

This is very old, but given a lot of experiences I have had with dates, you might want to consider this: People use different regional settings, as such, some people (and some databases/computers, depending on regional settings) may read this date 11/12/2016 as 11th Dec 2016 or Nov 12, 2016. Even more, 16/11/12 supplied to MySQL database will be internally converted to 12 Nov 2016, while Access database running on a UK regional setting computer will interpret and store it as 16th Nov 2012.

Therefore, I made it my policy to be explicit whenever I am going to interact with dates and databases. So I always supply my queries and programming codes as follows:

SELECT FirstName FROM Students WHERE DoB >= '11 Dec 2016';

Note also that Access will accept the #, thus:

SELECT FirstName FROM Students WHERE DoB >= #11 Dec 2016#;

but MS SQL server will not, so I always use " ' " as above, which both databases accept.

And when getting that date from a variable in code, I always convert the result to string as follows:

"SELECT FirstName FROM Students WHERE DoB >= " & myDate.ToString("d MMM yyyy")

I am writing this because I know sometimes some programmers may not be keen enough to detect the inherent conversion. There will be no error for dates < 13, just different results!

As for the question asked, add one day to the last date and make the comparison as follows:

dated >= '11 Nov 2016' AND dated < '15 Nov 2016' 

Answer 6

Really all sql dates should be in yyyy-MM-dd format for the most accurate results.