My typical requirement is that I want to subtract two Dates cast as timestamp. The Minuend (First parameter) is the current date and the Subtrahend(second parameter) is stored separately as DD, MM and YYYY in three columns. The final output should be a discrete year as number. I am playing with something like :
SELECT (TO_DATE('05-DEC-2013') -
CASE LENGTH(CAND_DOB_DD)
WHEN 1 THEN
CAST(TO_DATE('0'||CAND_DOB_DD||'-'||CAND_DOB_MM||'- '||CAND_DOB_YYYY,'DD-MM-YY HH24:MI:SS')
AS TIMESTAMP)
ELSE
CAST(TO_DATE(CAND_DOB_DD||'-'||CAND_DOB_MM||'-'||CAND_DOB_YYYY,'DD-MM-YY HH24:MI:SS')
AS TIMESTAMP) / 365 END YEAR
FROM CANDIDATE
The Year part as Integer will be used for a very sensitive calculation. Please suggest if the above piece of SCRIPT will yield the desired result. Thanks in advance.
For most purposes you could just use the Months_Between() function to determine the number of months between two dates, and then divide by 12 etc.. Note that the number of months is an integer when comparing two dates that have the same day of the month or are both the last day of the month.
This is tricky when it comes to leap years.
Do you count 28th Feb 2015 to 28th Feb 2016 as exactly one year, when 28th Feb 2015 to 29th Feb 2016 is one day longer but plainly is a year?
What about 29th Feb 2016 to 28th Feb 2017, or 28th Feb 2016 to 28th Feb 2017?
Think carefully about these boundary cases, but Months_Between() is likely to be your best choice.
Related
I'm a bit rubbish on Google Sheets formulas... would anyone be so kind to tell me how to achieve this ?
I'd like to have a cell that returns the last Friday's date on Sat to Wed, and instead the current date for Thursdays and Fridays.
Is it possible ?
e.g. this coming days:
Sat to Wed returns Friday 12th of March
Thu 18th returns Thu 18th
Fri 19th return Fri 19th
... and so on.
Thanks!
There are many ways to accomplish this, but try this:
=IF((WEEKDAY(TODAY())=5)+(WEEKDAY(TODAY())=6),TODAY(),TODAY()-VLOOKUP(WEEKDAY(TODAY()),{7,1; 1,2; 2,3; 3,4; 4,5},2,FALSE))
This formula is based on the us default numbers for weekdays, where Sunday = 1. If this formula produces unexpected results, your locale may be one where Monday = 1. In this case, you'll need to adjust as follows:
=IF((WEEKDAY(TODAY())=4)+(WEEKDAY(TODAY())=5),TODAY(),TODAY()-VLOOKUP(WEEKDAY(TODAY()),{6,1; 7,2; 1,3; 2,4; 3,5},2,FALSE))
Other things to keep in mind:
The + in (WEEKDAY(TODAY())=5)+(WEEKDAY(TODAY())=6) means OR (where * would mean AND).
The VLOOKUP is looking up the weekday of TODAY() within a simple virtual array, which is formed between the curly brackets and which instructs how many days to subtract from TODAY() given the current weekday in order to arrive at the previous Friday.
I am trying to get week numbers ( resetting at 1 for each month) as per ISO format for each month in 2019.For example I am interested in getting
All dates in July 2019: week 1 to 4,
All dates in Aug 2019 : week 1 to 4 and so on.
I first created the calculated field (Week_Number_ISO) to get the overall week number in year 2019.I used the following formula;
DATEPART('iso-week',[ Date]) which works as intended.
To get the monthly week number I used the following formula
INT((DATEPART('day',[Created Date])-DATEPART('iso-weekday',[Created Date])+7)/7)+1.
(Idea was to calculate the date of the first day of each week & then divide by 7 and take the integer part)
As per the ISO format, shouldn't July 29 to 31st be a part of week 4 for July?But the formula is showing it as week 5 for July 2019.I feel I am missing something in the formula or am missing something about ISO week number resetting at 1 for each month.
Can someone help me?
Here is an example of the dates in July 2019 and the associated week numbers.
Why would July 28th-July 31st 2019 be considered week 4?
I've seen How can an ICS file be written for a recurring event? but I've got a rather complex recurrence and can't figure out a rule after looking at the syntax of RRULEs.
I want an event that happens on the Friday preceding the first Saturday of each month. This Friday-before-the-first-Saturday may of course be in the previous month. I assume that if I can get this to work, similar (but not identical) events for Friday-before-the-second-Saturday, and -third- and -fourth-, with Friday before 5th Saturdays undefined.
Obviously I'd have RRULE:FREQ=MONTHLY;BYDAY=FR; but if I try to follow some of the examples using BYMONTHDAY I run into trouble: 28 would be a valid Friday-before-a-first-Saturday in February, but in any other month, Friday 28th would be the Friday before a 5th Saturday. Similarly for 29 (in a leap year), 30 and 31.
The goal is to include this in a Google Calendar, which I know supports display of ICS RRULEs it can't edit. So, assuming it's possible, how can I create an RRULE for this event? I've considered a separate event and accompanying rule for each month length. 31: Jan, Mar, May, Jul, Aug, Oct, Dec and 30: Apr, Jun, Sep, Nov are OK, but leap years are still an issue: 28 Feb could be a Friday before a first Saturday or a 5th Saturday (e.g. 2020 so one of my first two cases fails).
You're on the right track with having to use BYDAY=FR, AND since you can do negative BYMONTHDAY, the following should do the trick:
RRULE:FREQ=MONTHLY;BYDAY=FR;BYMONTHDAY=-1,1,2,3,4,5,6
I need to create a field of previous year total sales in the current year column.
Here is an example based on it being 2018 today: in 2018, it should be 2017 total sales(full year), in 2019, it should be 2018 Sales(jan-apr would be only months in may), and 2020 should be blank, as there are no data in 2019 yet, etc.
Use the calculation to make it as "Date-1".
I've tried so many times to solve this, but failed.
Question:
I help on a solution on how to calculate Current Year divided by last year in our Fiscal Year, month by month, where last years date differs from this years date
Scenario
I want to see how we performed on revenue January 2017 vs. January 2016
I select these date filters; YEAR = 2017 and Month = January. This will generate the dates 1st January to 31st January 2017
But, the dates for 2016, is not 1st January to 31st January
My company's logic is; Which DAY NAME was the 1st January of 2017 and find this first DAY NAME in January 2016 and then see which DATE this has.
Scenario Example:
2017 = 1 - 31 January and the DAY NAME for 1st January is "Sunday"
2016 = The date for the first Sunday in 2016 is 3rd January, therefore, the dates for January 2016 = 3 January - 2. February
My problem is how to make a formula that takes this year and divide that on last year's date range logic
What have I done?
First I created a formula; CALCULATE(SUM(Append1[SalesAmount]);SAMEPERIODLASTYEAR(Append1[Date]);ALL(Append1);FILTERS(Append1[Channel]))
This worked perfectly, but this just calculates 1-31 January 2017 / 1-31 January 2016 (calendar year, not fiscal year).
Googled through many, many Power BI post regarding Rolling months, DAX, DATE DAX and such, but i still haven't been able to come up with a solution.
Hope some of you can help me in the right direction!
Regards Erik
You can create a calculated column that gives the corresponding date from the previous year as follows:
DateLastYear =
VAR CurrDate = Append1[Date]
VAR LastYear = DATE(YEAR(CurrDate)-1,MONTH(CurrDate),DAY(CurrDate))
VAR Offset = MOD(WEEKDAY(CurrDate) - WEEKDAY(LastYear),7)
RETURN LastYear + Offset
Given this, you can create a calculated column that looks up the sales amount on those dates:
LastYearSalesAmount =
LOOKUPVALUE(Append1[SalesAmount],Append1[Date],Append1[DateLastYear])
At this point, you should be able to create your ratio as follows:
DIVIDE(SUM(Append1[SalesAmount]), SUM(Append1[LastYearSalesAmount]))