I have some date range values from which I want to fetch last 3 month details. How can I fetch the last 3 month details?
You can try like this, Put your appropriate date column in this query.
SELECT *
FROM TABLE_NAME
WHERE DATEADD(MONTH, -3, GETDATE()) between txtFromDate and txtToDate
you can check against last 90 days.
SELECT *
FROM TABLE_NAME
WHERE DATEADD(DAY, -90, GETDATE()) between txtFromDate and txtToDate
this will gives you the last 3 month date (from 1st of the month)
WHERE date_column >= DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()) - 3, 0)
you have 3 date column there . . not sure which one you want use as reference
Related
I am trying to select records from today and the same day of each week for the last 4 weeks.
Today (Tuesday)
Last Tuesday
The Tuesday before that
The Tuesday before that
I need this to be tied to current date because I am going to run this query every day so I don't want to use a between or something where I manually specify the date range.
Everything I have found or tried so far has pulled the last month of data but not the last 4 weeks of the same weekday.
select *
from table
where thedatecolumn >= DATEADD(mm, -1, GETDATE())
This works but pulls everything from the last month.
If today's date is 7/10/2019 I need
Data from 7/10/2019
Data from 7/3/2019
Data from 6/26/2019
Data from 6/19/2019
Every day I will run this query, so I need it to be dynamic based on the current date.
I believe you want to look back 21 days and then filter those dates that have the same day of week:
select * from table
where thedatecolumn >= DATEADD(DAY, -21, CAST(GETDATE() AS DATE))
and DATEPART(WEEKDAY, thedatecolumn) = DATEPART(WEEKDAY, GETDATE())
You Can try using a recursive cte which starts today and repeatedly substracts 7 days - so you ensure you always land on the same weekday. Following an example:
WITH cteFromToday AS(
SELECT 0 AS WeeksBack, GETDATE() AS MyDate
UNION ALL
SELECT WeeksBack + 1 AS WeeksBack, DATEADD(d, -7, MyDate) AS MyDate
FROM cteFromToday
)
SELECT TOP 5 *
FROM cteFromToday
OPTION ( MaxRecursion 0 );
This is quite simple. Substitute CURRENT_TIMESTAMP here for any given date.
SELECT CONVERT(DATE,CURRENT_TIMESTAMP) AS Today,
DATEADD(DAY,-7,CONVERT(DATE,CURRENT_TIMESTAMP)) AS LastWeek ,
DATEADD(DAY,-14,CONVERT(DATE,CURRENT_TIMESTAMP)) AS TwoWeeksAgo,
DATEADD(DAY,-21,CONVERT(DATE,CURRENT_TIMESTAMP)) AS ThreeWeeksAgo
SO, if you want to get data for a set of ranges for one entire day with those dates:
SELECT something
WHERE
datetimecolumn >= CONVERT(DATE,CURRENT_TIMESTAMP) AND datetimecolumn < DATEADD(DAY,1, CONVERT(DATE,CURRENT_TIMESTAMP)) -- Todays range,
OR datetimecolumn >= DATEADD(DAY,-7,CONVERT(DATE,CURRENT_TIMESTAMP)) AND datetimecolumn < DATEADD(DAY,1,DATEADD(DAY,-7,CONVERT(DATE,CURRENT_TIMESTAMP)))-- LastWeek ,
OR datetimecolumn >= DATEADD(DAY,-14,CONVERT(DATE,CURRENT_TIMESTAMP)) AND datetimecolumn < DATEADD(DAY,1,DATEADD(DAY,-14,CONVERT(DATE,CURRENT_TIMESTAMP)))-- TwoWeeksAgo,
OR datetimecolumn >= DATEADD(DAY,-21,CONVERT(DATE,CURRENT_TIMESTAMP)) AND datetimecolumn < DATEADD(DAY,1, DATEADD(DAY,-21,CONVERT(DATE,CURRENT_TIMESTAMP))) -- ThreeWeeksAgo
I have 2 datetime fields, NEW_EMPLOYMENT_STARTDATE and NEW_EMPLOYMENT_ENDDATE
When I calculate the difference in months using datediff with these values for startdate and enddate:
NEW_EMPLOYMENT_STARTDATE = 2017-15-01
NEW_EMPLOYMENT_ENDDATE = 2018-14-01
With this query:
DATEDIFF(MONTH, NEW_EMPLOYMENT_STARTDATE, NEW_EMPLOYMENT_ENDDATE)
It returns 12 months, but when I have values like this:
NEW_EMPLOYMENT_STARTDATE = 2017-01-01
NEW_EMPLOYMENT_ENDDATE = 2017-31-12
It returns 11 months.
How can I get 12 months? I am using this query:
DATEDIFF(MONTH, NEW_EMPLOYMENT_STARTDATE, NEW_EMPLOYMENT_ENDDATE)-
CASE
WHEN DATEPART(DAY, NEW_EMPLOYMENT_ENDDATE) > DATEPART(DAY, NEW_EMPLOYMENT_STARTDATE)
THEN 0
ELSE 0 END AS MONTH_DIFF
It still returns 11 months.
EDIT:
According to my case, the value of the end date always less 1 day from start date, so i make a trick to check condition with case when like this:
CASE
WHEN DATEPART(DAY, NEW_EMPLOYMENT_ENDDATE) > DATEPART(DAY, NEW_EMPLOYMENT_STARTDATE)
THEN DATEDIFF(MONTH, NEW_EMPLOYMENT_STARTDATE, NEW_EMPLOYMENT_ENDDATE)+1
ELSE DATEDIFF(MONTH, NEW_EMPLOYMENT_STARTDATE, NEW_EMPLOYMENT_ENDDATE)
END AS DATEDIF
i add + 1 value to the end date so i ta can be round to next month, give feedback from my solution sir thanks
You're expectations are incorrect. When you do a DATEDIFF using MONTH, it does not consider the day portion of the dates. Consider that it is simply considering the difference in the month numbers only, regardless of the day specified.
This query:
SELECT DATEDIFF(MONTH, '20170101', '20171231') MonthsDiff
Is equivalent to this:
SELECT DATEPART(MONTH, '20171231') - DATEPART(MONTH, '20170101') MonthsDiff
The documentation for DATEDIFF states:
DATEDIFF ( datepart , startdate , enddate )
The first option is DATEPART:
datepart
Is the part of startdate and enddate that specifies the type of boundary crossed.
If you want something closer to what you expect, you can do a simple calculation based on performing the DATEDIFF in days, the dividing it by the approximate number of days in a month.
SELECT DATEDIFF(DAY, '20170101', '20171231') / ( 365 / 12 ) MonthsDiff
This will round the output to the closest month number, it all depends on how accurate you want to be. If you want months as a decimal for greater accuracy then run the below:
SELECT DATEDIFF(DAY, '20170101', '20171220') / ( 365.00 / 12 ) MonthsDiff
Note: This does not take into account leap years, for larger date ranges that might include leap years, which will make a minor difference to the accuracy.
datediff() does something very particular. It counts the number of "boundaries" between two date/time values. In your case, there are eleven boundaries -- one for each month in the year before December.
This behavior is not necessarily intuitive. If you add one day to each of your dates:
NEW_EMPLOYMENT_STARTDATE = '2017-01-02' (YYYY-MM-DD is standard format)
NEW_EMPLOYMENT_ENDDATE = '2018-01-01'
Then you will have 12 months.
If you want to round up, you can play with the dates. One method would be to normalize the first value to the beginning of the month and then add 15 days to the second value:
DATEDIFF(MONTH,
DATEADD(DAY, 1 - DAY(NEW_EMPLOYMENT_STARTDATE), NEW_EMPLOYMENT_STARTDATE)
DATEADD(DAY, 15 + 1 - DAY(NEW_EMPLOYMENT_STARTDATE), NEW_EMPLOYMENT_ENDDATE)
)
This would happen to work for the two examples you give.
Please use this select to achieve your desired result. You can use table columns instead of variables:
declare #new_employment_startdate datetime = convert (datetime, '2017-01-01', 121);
declare #new_employment_enddate datetime = convert (datetime, '2018-01-14', 121);
select
datediff(month, #new_employment_startdate, #new_employment_enddate)
+ case when
datediff(month, dateadd(ms, -3, dateadd(dd, datediff(dd, 0, #new_employment_startdate), 0)), #new_employment_startdate) = 1
and datediff(month,#new_employment_enddate , dateadd(dd, datediff(dd, 0, #new_employment_enddate) + 1, 0)) = 1
then 1
else 0
end;
Some explanations:
I check or start date is first month day AND end date is last month day. At this case I add +1 to standard datediff by month.
You can better understand my used datetime manipulations by using these example queries: https://gist.github.com/runnerlt/60636b029ab47845fdfd8924ed482e61
You need to add 1 more day in your End Date.
DATEDIFF(MONTH, NEW_EMPLOYMENT_STARTDATE, DATEADD(DD,1,NEW_EMPLOYMENT_ENDDATE))
You could match the output with MS Excel.
I need the number of records of last month. I used to use this approach so far:
select
count(ID)
from
table
where
col1 = 'somerule'
and
DateTimeOfInsert >= '20150901'
and
DateTimeOfInsert <= '20150930'
Now I'm about to atomate this task and therefore I have to pull the start and end dates of last month automatically. So here it is:
select
count(ID)
from
table
where
col1 = 'somerule'
and
DATEPART(m, DateTimeOfInsert) = DATEPART(m, DATEADD(m, -1, getdate()))
and
DATEPART(yyyy, DateTimeOfInsert) = DATEPART(yyyy, DATEADD(m, -1, getdate()))
My only issue is that at this very moment the first query returns 1073 and the second one 1124. So the question is obvious: what is the difference between them? Both should inlude the start and end date. I can't spot it.
This condition:
DateTimeOfInsert >= '20150901' and DateTimeOfInsert <= '20150930'
retrieves record that are between 2015-09-01 00:00:00.000 and 2015-09-30 00:00:00.000.
If DateTimeOfInsert is DATETIME, then this will return different result from your other condition.
The best way for this kind of queries is not to use BETWEEN but rather use
>= and <. In your case, you want to get records for the last month, so you want to use >= start of last month and < start of this month:
DateTimeOfInsert >= DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()) - 1, 0) -- Beginning of previous month
AND DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()), 0) -- Beginning of this month
The above condition also makes your query sargable.
For some common date routines, see this article.
The difference is in time component of datetime.
This:
DateTimeOfInsert >= '20150901' and DateTimeOfInsert <= '20150930'
will not select date like 20150930 15:30.
But this:
DATEPART(m, DateTimeOfInsert) = DATEPART(m, DATEADD(m, -1, getdate()))
will select it because you are checking for months and year part only. That`s why the second select returns more rows.
Both queries will return the same if you just change the first statement so that it will consider time component of last day of month:
DateTimeOfInsert >= '20150901' and DateTimeOfInsert < '20151001'
I have a SQL SERVER Table which has only one field "StartDate" the records are as follows
**
2011-07-28 19:30:00.000
2011-07-29 21:50:00.000
2011-07-25 09:20:00.000
**
What i want to do is :
SHOW RECORDS if its CURRENT DATE ( todays date ) and the time difference between current time the StartDate is not less then 5 minutes, i have written the following code but it doesnt show me the time difference ?
SELECT * FROM table WHERE DATEDIFF(day, StartDate, GETDATE()) <= 0
SELECT StartDate
FROM table
WHERE YEAR(StartDate)=YEAR(GETDATE())
AND MONTH(StartDate)=MONTH(GETDATE())
AND DAY(StartDate)=DAY(GETDATE())
AND (DATEDIFF(minute, StartDate, GETDATE()) >= 5
OR
DATEDIFF(minute, StartDate, GETDATE()) <= 5)
How about:
SELECT StartDate
,GETDATE()
,DATEDIFF(day, StartDate, GETDATE())
,DATEDIFF(minute, StartDate, GETDATE())
,*
FROM table
WHERE DATEDIFF(day, StartDate, GETDATE()) <= 0
AND DATEDIFF(minute, StartDate, GETDATE()) >= 5
There are two ways to do it one being DateDiff the other is DATEADD. Judging by the way I read your question DateAdd should do it. Here is an example;
SELECT *
FROM [dbo].[TABLE]
WHERE [LAST_UPDATE] > DATEADD(minute,-5,GetDate())
Using BETWEEN is probably a little more optimal than two AND statements (maybe not). Try not to do a calculation on each row if you don't have to. Doing DATEADD only on the current date will only be calculated once.
SELECT
whatever
FROM
table
WHERE
StartDate
BETWEEN FLOOR( CAST( GETDATE() AS FLOAT ) )
AND DATEADD(minute, -5, GETDATE())
I interpret the question as looking for rows where the date is today (between the start of today) but not within the last 5 minutes (and less than 5 minutes ago). That might not be what you were going for.
Hope that helps
I have a field in my table that holds a date and is in Datetime format.
I wish to select all records where the date in that field is greater than the date that is 40 days prior to the 1st of the current month.
Struggling to come up with the correct T-SQL syntax to do this.
This expression gives you the date you are looking for:
DATEADD(DAY, -DATEPART(d, GETDATE()) + 1 - 40, GETDATE())
Will this work
select #urdatecolumn > (getdate()- (DAY(getdate()) + 40-1))
Try this
where dt_blah > DATEADD(d,-40,DATEADD(wk, DATEDIFF(wk, 0, dateadd(dd, 6 - datepart(day, dt_blah), dt_blah)), 0)