i am currently trying to filter a report containing business trips and itineraries so it shows only those that have at least one business stop abroad.
In more general terms, i want to show all data for a specific value in column "Itinerary Key" if in one of two other columns "Departure Country" OR "Arrival Country" a certain condition ("<> Country") for the information connected to the value in column "Itinerary Key" is met.
So far i created a Query Calculation item ("[Itin Key if Trip abroad]") containing the expression:
CASE WHEN
([Departure Country]<>[Country]) OR ([Arrival Country]<>[Country])
THEN [Itinerary Key]
ELSE Null
END
So i have a column that contains the Itinerary key, but only in the lines where the condition is actually met.
I then created a filter with the following expression:
[Itinerary Key] in ([Itin Key if Trip abroad])
The idea here was to have a selection based on matching the itinerary key with the pool of itinerary keys that meet the condition on any line. However, it still only shows the lines where the Query calculation item actually generates a value.
I want to show all the lines for the columns "Departure Country" and "Arrival Country" for each Itinerary Key where the condition from the query calculation is true at least once.
How can this be done?
I think you can accomplish by using this filter instead of the one you mentioned:
count([Itin Key if Trip abroad] for [Itenerary]) > 0
For every unique itenerary key we will count the non-null values (nulls are ignored in counts). If a specific itenerary has no rows that match the criterion, the count will return 0 and its rows will be excluded. If a specific itenerary has one or more rows that match the criterion, its count will be 1 or more and all rows for that itenerary will be included.
Related
I have a huge dataset, this data set are students records frequently coming from the web.The column "count" as shown in the image below, will count how many subjects written by each student. As a rule the subjects count shouldnt exceed "2" buh some students have erroneously or deliberately written 3 and more. Please, how can i dynamically remove some selected column values corresponding to a particular StudentID to make the "count" column read 2 instead of manually removing subject scores, which to me will be a huge task and a burden in powerquery
See if this works for you
let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
x= Table.ReplaceValue(Source, each [cacrs], each if [Count]>2 then null else [cacrs] ,Replacer.ReplaceValue,{"cacrs"}),
x2= Table.ReplaceValue(x, each [examcrs], each if [Count]>2 then null else [cacrs] ,Replacer.ReplaceValue,{"examcrs"}),
x3= Table.ReplaceValue(x2, each [crs], each if [Count]>2 then null else [cacrs] ,Replacer.ReplaceValue,{"crs"})
in x3
it erases the values in the cacrs, examcrs and crs columns if [Count] on that row >2
Generally, I see we can limit the select by select * from table where predicate = value limit by N Am currently in a situation where I have 200 records falling under a predicate, but I want to update the first 100 like update table set column = 1 where predicate = value limit...? and the second half by update table set column = 2 where predicate = value. I think it could be done by having ranges <=,>= in the predicate section, unfortunately, I have none of them.
Currently, I don't think we have this feature as WHERE clause must identify the row or rows to be updated by primary key as per. However, you could further limit the number of rows to be updated by using IF EXISTS condition. Details can be found here
I have this table which has foreign keys from several other keys:
Basically, this table shows which students registered in which module run by which teacher in what term.
I want to query the following:
How many students have registered for more than one module run by a given tutor?
It will look something like this:
For example, Vasiliy Kuznetsov runs two modules: FunPro and NO. If one student registers for both of them, he is counted as one.
My sql oriented mind is telling me this: Count all the rows in which student_id and tutor_id are the same. For example, in one row student_id is 5 and tutor_id is 10, and the same is true for the third row. Then, I count it as one.
How can I do that with DAX formulas?
RowCount:=
COUNTROWS( ModuleRegistration )
StudentsWithTwoOrMoreRegistrations:=
COUNTROWS(
FILTER(
VALUES( ModuleRegistration[Student_ID] )
,[RowCount] >= 2
)
)
I refer to arguments positionally, thus the first argument to a function is (1), the second (2), and so on.
So, [RowCount] is trivial.
[StudentsWithTwoOrMoreRegistrations] is a bit more involved. DAX, being a functional language, is best understood inside-out.
FILTER() takes a table expression in (1) and evaluates a boolean predicate, (2), for each row in (1). It returns all rows from (1) for which (2) evaluates to true.
Our FILTER()'s (1) is VALUES( ModuleRegistration[Student_ID] ). VALUES() returns the unique rows from a field based on current filter context (it respects slicers and filters in the pivot table). Thus, we will return some subset of the unique list of [Student_ID]s.
Our FILTER()'s (2) is [RowCount] >= 2. For each [Student_ID] in (1), we'll evaluate [RowCount], checking how many times that student appears in ModuleRegistration. [RowCount] is evaluated in the combination of filter context from the pivot table (the [Faculty Name] field in your sample pivot provides filter context) and row context from FILTER()'s (1). Thus it counts how many times the student appears in ModuleRegistration for the [Faculty Name] on the pivot table row.
We check that [RowCount] is >= 2.
You've not indicated if your measure needs to handle grand totals, or how you might want to see that. If you need more help for the grand total to get it to behave the way you like, let me know.
Edit for grand total
There are a few ways you might want to handle grand totals. I'm gong to assume that you want a unique count of students.
StudentsWithTwoOrMoreRegistrations:=
COUNTROWS(
SUMMARIZE(
FILTER(
SUMMARIZE(
ModuleRegistration
,ModuleRegistration[Tutor_ID]
,ModuleRegistration[Student_ID]
)
,[RowCount] >= 2
)
,ModuleRegistration[Student_ID]
)
)
WTF happened to our measure?
Let's examine:
Starting with the innermost SUMMARIZE(). SUMMARIZE() navigates relationships outward from the table in (1) and groups by the columns listed in (2)-(N) (these don't have to be from the table in (1), but must be reachable by navigating relationships).
This is equivalent to the following in SQL:
SELECT
mr.Tutor_ID
,mr.Student_ID
FROM ModuleRegistration mr
We use FILTER() on this table like earlier. [RowCount] is evaluated in the combination of filter context from the pivot table and the row in the table, defined by our SUMMARIZE() above.
Now our row context is instead of just a student, a student-tutor pair. This pair will have a [RowCount] >= 2 when the student has taken more than one module from a tutor.
Our FILTER() returns the pairs which have a [RowCount] >= 2. This output table has two fields, [Tutor_ID] and [Student_ID], but we want to count distinct [Student_ID]s out of this.
Thus, we use the table from FILTER() as our (1) in the outer SUMMARIZE(). We group only by the values of [Student_ID]. We then count the rows of this table.
When only one [Faculty_Name] is in context, e.g. on a pivot table row, then our inner SUMMARIZE() is grouping by a single value of [Tutor_ID] and whatever [Student_ID]s are associated with it. This is identical to our earlier measure.
When we have many [Tutor_ID]s in context, like in the grand total, then we'll see the appropriate behavior of only counting each [Student_ID] once.
I have been melting my brain trying to work out the formula i need for a multiple conditional lookup.
I have two data sets, one is job data and the other is contract data.
The job data contains customer name, location of job and date of job. I need to find out if the job was contracted when it took place, and if it was return a value from column N in the contract data.
The problem comes when i try to use the date ranges, as there are frequently more than one contract per customer.
So for example, in my job data:-
CUSTOMER | LOCATION | JOB DATE
Cust A | Port A | 01/01/2014
Cust A | Port B | 01/02/2014
Customer A had a contract in port B that expired on 21st Feb 2014, so here i would want it to return the value from column N in my contract data as the job was under contract.
Customer A did not have a contract in port A at the time of the job, so i would want it to return 'no contract'.
Contract data has columns containing customer name, port name, and a start and end date value, as well as my lookup category.
I think i need to be using index / match but i can't seem to get them to work with my date ranges. Is there another type of lookup i can use to get this to work?
Please help, I'm losing the plot!
Thanks :)
You can use two approaches here:
In both result and source tables make a helper column that concatenates all three values like this: =A2&B2&C2. So that you get something like 'Cust APort A01/01/2014'. That is, you get a unique value by which you can identify the row. You can add delimiter if needed: =A2&"|"&B2&"|"&C2. Then you can perform VLOOKUP by this value.
You can add a helper column with row number (1, 2, 3 ...) in source table. Then you can use =SUMIFS(<row_number_column>,<source_condition_column_1>,<condition_1>,<source_condition_column_2>,<condition_2>,...) to return the row number of source table that matches all three conditions. You can use this row number to perform INDEX or whatever is needed. But BE CAREFUL: check that there are only unique combinations of all three columns in source table, otherwise this approach may return wrong results. I.e. if matching conditions are met in rows 3 and 7 it will return 10 which is completely wrong.
I have predefined item combination (for example brand1|brand2|brand3 etc) in the table.
i like to collect brands and check against with predefined table data.
For example i collected brand1|brand2|brand3 then i can do get some value form that predefined table(it meets the condition).
How can i check?
brands would be unlimited. also brand1|brand2|brand3 of brand1|brand2| exist then returns true.
Okay, taking a wild guess at what you're asking, you have a delimited field with brands in them separated by a | character. You want to return any row that has the right combination of the brands in there, but don't want to return rows with, for example, brand "testify" in them when you search for "test".
You have four search conditions (looking for brand3):
the brand exists by itself: "brand3"
the brand starts the delimited field: "brand3|brand4|brand6"
the brand is in the middle of the field: "brand1|brand3|brand6"
the brand is at the end of the field: "brand1|brand2|brand3"
so, in SQL:
SELECT *
FROM MyTable
WHERE BrandField = 'brand3'
OR BrandField LIKE 'brand3|%'
OR BrandField LIKE '%|brand3|%'
OR BrandField LIKE '%|brand3'
Repeat as required for multiple brands.