Table Calculation In Blended Data Sources - tableau-api

I have 2 data sources:
1) Eligible Devices to be changed to a newer model
2) Devices actually changed to a new model
These could be for example computer devices which are after a certain time required to be changed to a newer version i.e. end of life of a product.
As this is a blended data source, so i cannot apply an LOD.
The calculation i am trying to achieve is:
Jan 2017: There are 100 eligible devices but actually only 85 got refreshed. hence there are 15 device which are carried forward to the next month
Feb 2017: There are 200 eligible devices but actually only 160 got refreshed, plus 15 from Jan 15 so the total opening bal for Feb = 200 + 15 = 215 and then 160 to be deducted i.e. 55.
The same process will continue for all the other months and year.
The challenge:
Lets say by actual - eligible is named as Diff. This number should only take actual - eligible for the first month. from second month onward it should take actual - eligible and then the balance from previous month i.e. look up
How do i write a calc which only shows the calculation as described above for first month and then a look up + actual - eligible from previous month from next month onwards.
There would be month and year columns in filters, if i remove any year or month filter, the carry forward from that period will not be accounted for.

Sounds like Running_Sum([Diff]) ahould do the trick as long as you set the partitioning and addressing correctly.

Related

Hi, I need to display data from a table (vw_tracking_resource_events), but only 14 days of data for a certain time (18:00 to 19:00)

I use PostgreSQL
I can run a single query per day, but it will take a long time to go through every day.
The "zone" and "reader" also changes, so to run single queries every time will keep me up until late.
If at best I can only change the "reader" and "zone" every time it would help. The main "PAIN" I have, is to change the dates every time. It will be from 2022 11 18 18:00 to 2022 12 01 19:00.
P.S - I'm new to SQL, please be gentle :)
My current query:
select * from vw_tracking_resource_events
where "when_enter_dt_timezone" between '2022 11 18 18:00:00' and '2022 11 18 19:00:00'
and "zone" = '085 Level'
and "site" = 'MK'
and "reader" = 'RV Shaft'
and "group" = 'Lamp'
If you cast your field to separate and compare the date part and the time part to desired ranges, it becomes super easy:
WHERE when_enter_dt_timezone BETWEEN '2022-11-18' AND '2022-12-01T23:59:59.999'
AND when_enter_dt_timezone::time BETWEEN '18:00' AND '19:00'
Edit:
#Stefanov.sm makes a very good point regarding the casting of the timestamp to type date (1st criterion above) if an index can be used to retrieve data.
I corrected the query to take his remark.
Disclaimer: With when_enter_dt_timezone::date BETWEEN ... AND 2022-12-01, you include e.g. 2021-12-01T18:30.
Without the cast, the upper bound 2022-12-01 is implicitly set to midnight (morning); you will either have to change the upper bound to 2022-12-02 (which #Stefanov.sm suggested and works very well since you have a condition on the time anyway) or set your upper bound to 2022-12-01T23:59:59.999 (which is what I did above, although only to draw your attention to this specific issue).
You can try something like this to get records for the last 14 days between 6:00 p.m. and 7:00 p.m.
select * from vw_tracking_resource_events
where when_enter_dt_timezone > current_date - interval '14' day and
when_enter_dt_timezone::time between time '18:00' AND time '19:00'
Demo in sqldaddy.io
Modified using #Atmo notes
and #a_horse_with_no_name

SAP Business Objects - Calculating services activity across months

I have a requirement to calculate a persons total activity, for each month that they have activity. I'll give a couple of examples to demonstrate my needs:
Client A - Service starts 15th April and ends 5th June. They are scheduled to receive 7 hours per week of activity.
Client B - Service Starts 15th April and ends 20th April. They are scheduled to receive 14 hours per week.
Given the above I would want a table that shows the following:
Clients
April Hrs
May Hrs
June Hrs
Client A
16
31
5
Client B
10
Total Activity
26
31
5
Currently we are having to calculate each month individually and stack up the table with each months data. Is there a way to generate this calculation across months, taking into account the start dates, end dates, and commissioned hours activity per week and calculate the actual received activity in each month?
Thanks in advance!

How the target response Date is calculate in an Entiltment Process Milestone?

I am new to the Entitlement Process and Milestones using the OOTB implementations. In my org, two business hours (1 for SLA and 1 for OLA) set with different timezone. Each business hours configured to work 9 AM to 6 PM.
Extending the question from link : What will be the time trigger value based on the Business hour in salesforce? .
I have some SLA which has 5 days of deadline. As per formula ((EOB-SOB) * MPH) * NOBD), I need to get clarification on below if its correct:
EOB = Assume 5 days deadline, so 14/05/17
SOB = Today, so 09/05/17
MPH = 60 minutes
NOB = 5, What do I need to consider here? As No. of business day means 5 days
here, as 5 days of deadline?? Please clarify.
One thing which is observed for 5 days business: as per formula 5*60*5=1500 or 5*60*9 (no of business hours)=2700. As per 2nd logic I implemented, but OOTB not showing 5 days, its only showing the 2 days why ?
First of all, regarding: What will be the time trigger value based on the Business hour in salesforce?
EOB, stood for end of Business day, so 19:00 or 7 PM
SOB, was 10 AM in your sample
I have cleared up my original answer on that question as well.
Current question
Target Response (Days) showing 2 for 45 hours....
Ah, eh, yes tricky and often asked for. The 2 is simple 45/24 and then rounded off...
It is not business days!
There are some ideas on the Idea Exchange for this, but for now this is how it is.

How to handle dates in neo4j

I'm an historian of medieval history and I'm trying to code networks between kings, dukes, popes etc. over a period of time of about 50 years (from 1220 to 1270) in medieval Germany. As I'm not a specialist for graph-databases I'm looking for a possibility to handle dates and date-ranges.
Are there any possibilities to handle over a date-range to an edge so that the edges, which represents a relationship, disappears after e.g. 3 years?
Are there any possibility to ask for relationships who have their date-tag in a date-range?
The common way to deal with dates in Neo4j is storing them either as a string representation or as millis since epoch (aka msec passed since Jan 01 1970).
The first approach makes the graph more easily readable the latter allows you to do math e.g. calculate deltas.
In your case I'd store two properties called validFrom and validTo on the relationships. You queries need to make sure you're looking for the correct time interval.
E.g. to find the king(s) in charge of France from Jan 01 1220 to Dec 31st 1221 you do:
MATCH (c:Country{name:'France'})-[r:HAS_KING]->(king)
WHERE r.validFrom >= -23667123600000 and r.validTo <=-23604051600000
RETURN king, r.validFrom, r.validTo
addendum
Since Neo4j 3.0 there's the APOC library which provides couple of functions for converting timestamps to/from human readable date strings.
You can also store the dates in their number representation in the following format: YYYYMMDD
In your case 12200101 would be Jan 1st 1220 and 12701231 would be Dec 31st 1270.
It's a useful and readable format and you can perform range searches like:
MATCH (h:HistoricEvent)
WHERE h.date >= 12200101 AND h.date < 12701231
RETURN h
It would also let you order by dates, if you need to.
As of Neo4J 3.4, the system handles duration and dates, see the official documentation. See more examples here.
An example related to the original question: Retrieve the historical events that happened in the last 30 days from now :
WITH duration({days: 30}) AS duration
MATCH (h:HistoricEvent)
WHERE date() - duration < date(h.date)
RETURN h
Another option for dates that keeps the number of nodes/properties you create fairly low is a linked list years (earliest year of interest - latest year), one of months (1-12), and one of dates in a month (1-31). Then every "event" in your graph can be connected to a year, month, and day. This way you don't have to create a new node for every new combination of a year month and day. You just have a single set of months, one of days, and one year. I scale the numbers to make manipulating them easier like so
Years are yyyy*10000
Months are mm*100
Date are dd
so if you run a query such as
match (event)-[:happened]->(t:time)
with event,sum(t.num) as date
return event.name,date
order by date
You will get a list of all events in chronological order with dates like Janurary 17th, 1904 appearing as 19040117 (yyyymmdd format)
Further, since these are linked lists where, for example,
...-(t0:time {num:19040000})-[:precedes]->(t1:time {num:19050000})-...
ordering is built into the nodes too.
This is, so far, how I have liked to do my event dating

How do I Loop through a schedule in Crystal Reports

I'm building a report in Crystal Reports 2008. The report is dealing with employee's schedules. There are time slots where the schedule is open, and time slots where the schedule is unavailable.
Currently, I've built my logic so that it finds the start and end of an unavailable time. The report them tells me how many hours that particular staff person was unavailable.
My issue is that sometimes, staff people have a block at the beginning of their schedule marked as 'unavailable', and a block at the end of the day as 'unavailable', but between the two they are 'open'. Thus, the report says that particular staff person was out the whole day, but they actually worked. It isn't an option to tell these particular staff people how to schedule their day - they decide their own schedule, and I write the report to accomodate their needs.
SCHEDULE_TIME EMP_ID UNAVAILABLE_CODE WORK_LENGTH
7/5/2011 11:00 100 NULL 15
7/5/2011 11:15 100 NULL 15
7/5/2011 11:30 100 NULL 15
7/5/2011 11:45 100 NULL 15
7/5/2011 12:00 100 15 5
7/5/2011 17:00 100 15 5
This example shows how somebody would have a 5 hour block calculated for unavailable time, but it's only 2 appointments. For the code, I'm using DATEDIFF between appointment times.
(Essentially, they have built in more than one 'unavailable' block, and my logic will only accomodate one 'unavailable' block per day).
I'm pretty sure that I need to run a type of DO...WHILE loop within the report in order to calculate the total hours unavailable. I'm just not sure how to structure the loop in Crystal Reports.
Maybe i'm missing something but what you want to do looks straight forward. Two obvious options:
Running total:
Set the field to {TABLE.WORK_LENGTH}
Set the type to sum
Set the evaluation formula to not(isnull({TABLE.UNAVAILABLE_CODE}))
Set the reset on change of group/field {TABLE.EMP_ID} (assuming you're looking for totals per employee)
Formula/sum:
Create a formula field unavailable_time with if not(isnull({TABLE.UNAVAILABLE_CODE})) then {TABLE.WORK_LENGTH} else 0
Create a group on {TABLE.EMP_ID}
Create a sum on your formula field in the group footer