I am having the following problem and am completely new to DAX, so I don't know how to solve it. Should be pretty easy probably.
I have a table looking like this and I want to check for several values whethey they match for filter_id
id filter_id
1 5
1 17
2 5
3 5
3 17
4 9
4 17
5 17
For example, I want to get all ids which contain filter_id 5 and filter_id 17. Since the data is stored in different rows, I cannot compare with and, since one row cannot possibly have both values.
The result should be
id 1 and id 3
since only they have both values.
Thanks a lot for your help!
Create a separate table (Selected_FilterIDs) which comprises a single column (filter_id) containing your chosen filter_ids (e.g. 5 and 17).
You can then use the following measure:
MyMeasure :=
VAR SelectedValues =
VALUES( Selected_FilterIDs )
VAR SelectedValuesCount =
COUNTROWS( SelectedValues )
VAR T1 =
SUMMARIZE(
Main_Table,
Main_Table[id],
"MyCount",
SUMX(
DISTINCT( Main_Table[filter_id] ),
IF( Main_Table[filter_id] IN SelectedValues, 1 )
)
)
RETURN
CONCATENATEX(
FILTER( T1, [MyCount] = SelectedValuesCount ),
Main_Table[id],
", "
)
Related
I am building an ms access db to manage part numbers of mixtures. It’s pretty much a bill of materials. I have a table, tblMixtures that references itself in the PreMixture field. I set this up so that a mixture can be a pre-mixture in another mixture, which can in turn be a pre-mixture in another mixture, etc. Each PartNumber in tblMixture is related to many Components in tblMixtureComponents by the PartNumber. The Components and their associated data is stored in tblComponentData. I have put in example data in the tables below.
tblMixtures
PartNumber
Description
PreMixtures
1
Mixture 1
4, 5
2
Mixture 2
4, 6
3
Mixture 3
4
Mixture 4
3
5
Mixture 5
6
Mixture 6
tblMixtureComponents
ID
PartNumber
Component
Concentration
1
1
A
20%
2
1
B
40%
3
1
C
40%
4
2
A
40%
5
2
B
30%
6
2
D
30%
tblComponentData
ID
Name
Density
Category
1
A
1.5
O
2
B
2
F
3
C
2.5
I
4
D
1
F
I have built the queries needed to pull the information together for the final mixture and even display the details of the pre-mixtures and components used for each mixture. However, with literally tens of thousands of part numbers, there can be a lot of overlap in pre-mixtures used for mixtures. In other words, Mixture 4 can be used as a pre-mixture for Mixture 1 and Mixture 2 and a lot more. I want to build a query that will identify all possible mixtures that can be used as a pre-mixture in a selected mixture. So I want a list of all the mixtures that have the same components or subset of components as the selected mixtures. The pre-mixture doesn’t have to have all the components in the mixture, but it can’t have any components that are not in the mixture.
If you haven't solved it yet...
The PreMixtures column storing a collection of data is a sign that you need to "Normalize" your database design a little more. If you are going to be getting premixture data from a query then you do not need to store this as table data. If you did, you would be forced to update the premix data every time your mixtures or components changed.
Also we need to adress that tblMixtures doesn't have an id field. Consider the following table changes:
tblMixture:
id
description
1
Mixture 1
2
Mixture 2
3
Mixture 3
tblMixtureComponent:
id
mixtureId
componentId
1
1
A
2
1
B
3
1
C
4
2
A
5
2
B
6
2
D
7
3
A
8
4
B
I personally like to use column naming that exposes primary to foreign key relationships. tblMixtures.id is clearly related to tblMixtureComponenets.mixtureId. I am lazy so i would also probably abreviate everything too.
Now as far as the query, first lets get the components of mixture 1:
SELECT tblMixtureComponent.mixtureId, tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1
Should return:
mixtureId
componentId
1
A
1
B
1
C
We could change the WHERE clause to the id of any mixture we wanted. Next we need to get all the mixture ids with bad components. So we will build a join to compare around the last query:
SELECT tblMixtureComponent.mixtureId
FROM tblMixtureComponenet LEFT JOIN
(SELECT tblMixtureComponent.mixtureId,
tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1) AS GoodComp
ON tblMixtures.componentId = GoodComp.componentId
WHERE GoodComp.componentId Is Null
Should return:
mixtureId
2
Great so now we have ids of all the mixtures we don't want. Lets add another join to get the inverse:
SELECT tblMixture.id
FROM tblMix LEFT JOIN
(SELECT tblMixtureComponent.mixtureId
FROM tblMixtureComponenet LEFT JOIN
(SELECT tblMixtureComponent.mixtureId,
tblMixtureComponent.componentId
FROM tblMixtureComponent
WHERE tblMixtureComponent.mixtureId = 1) AS GoodComp
ON tblMixtures.componentId = GoodComp.componentId
WHERE GoodComp.componentId Is Null) AS BadMix
ON tblMixtures.id = BadMix.mixtureId
WHERE BadMix.mixtureId = Null AND tblMixture.id <> 1
Should return:
mixtureId
3
4
Whats left is all of the ids of that have similar components but not nonsimilar components to mixture 1.
Sorry i did this on a phone...
Suppose I have the following dataset lookup:
ID T001 T002 T002 T004 T005
1 0 1 2 3 4
2 1 2 3 4 5
And I want to merge this onto my main dataset main:
proc sql;
create table main as
select a.*, b.*
from main as a
left join lookup as b on a.ID = b.ID;
quit;
However, this will merge the variables at "T001", "T002", "T003" etc.
I am trying to rename the variables with the merge/join, without having to manually rename each of them as there are 100's of these variables in the dataset. I am looking to get something like
ID V1 V2 V3 V4 V5
1 0 1 2 3 4
2 1 2 3 4 5
You can change the variables names dynamically with a simple macro function after the join
data have;
input ID T001 T002 T003 T004 T005;
datalines;
1 0 1 2 3 4
2 1 2 3 4 5
;
%macro rn;
%do i = 1 %to 5;
T00&i. = V&i.
%end;
%mend;
proc datasets lib=work nolist;
modify have;
rename %rn;
run;quit;
EDIT:
data have;
array t T001-T586 (586*100);
run;
%macro rn;
%do i=1 %to 586;
T%sysfunc(putn(&i., z3.)) = V&i.
%end;
%mend;
proc datasets lib=work nolist;
modify have;
rename %rn;
run;quit;
So I have a standard users table structure, with a primary id key and what so not and the following persona table:
user_id | persona_id | time_inserted
2 1 x
2 2 x+1
2 3 x+2
1 1 x+3
5 8 x+6
5 9 x+1
What I'd like to do is retrieve the LAST inserted row and limit to ONE per user id. So, in that query, the result I want would be:
[2, 3] because the last inserted for 2 was persona_id 3 (x+2), [1, 1], and [5,8] because the last inserted for 5 was persona_id 8 (x+6)
This is my query:
to_return = Persona.select(to_get).where(to_condition)
This works, but retrieves them all. How can I restrict the query as asked? Thank you very much.
This should work:
to_return = Persona.select(to_get).where(to_condition).group('user_id').having('time_inserted = MAX(time_inserted)')
Update
You can't select a column if you don't put that in the group clause.
As you want to group by only user_id, one possible solution is, select the user_id s first with the maximum time_inserted like this:
users_ids_relation = Persona.select('user_id').group('user_id').having('time_inserted = MAX(time_inserted)')
Then, join it with the personas table based on the condition and then select the required columns:
users_ids_relation.joins('personas').where(to_condition).select(to_get)
It will give you the expected result.
Hi there,
I am trying to fetch last six months data in my query and need to represent 'Month-year' label on x-axis. So query works fine when there is data for a month but if it is unsuccesful in join and no data is returned for that month - there is no label.Hence I am unable to draw it on chart (report Builder 3.0) E.g.
ApptMonthYearname NotCompleteAppointments AppointmentYear AppointmentMonthInt
January-2012 118 2012 1
December-2011 88 2011 12
Query includes a join on three tables and then where clause checks that an appointment is falling between the selected range of month and year or not :
declare #SelectedMonth int
declare #SelectedYear int
declare #careprovider varchar(20)
DECLARE #intFlag INT
let's say
SET #SelectedMonth = 1
SET #SelectedYear =2012
declare #selectedDate datetime
declare #previoussixmonthsdate datetime
IF (#SelectedMonth = Datepart(mm,GETDate()) and #SelectedYear =Datepart(yyyy,GETDate()))
BEGIN
SET #selectedDate = CONVERT(datetime, CONVERT(varchar(2), datepart(DD,GETDATE())+ '/' + Convert(varchar(2),#SelectedMonth) + '/' +Convert(varchar(4),#SelectedYear), 103))
SET #previoussixmonthsdate= DATEADD(month, -6, #selectedDate)
END
ELSE
BEGIN
SET #selectedDate = CONVERT(datetime, '31'+ '/' + Convert(varchar(10),#SelectedMonth) + '/' +Convert(varchar(10),#SelectedYear), 103)
SET #previoussixmonthsdate= DATEADD(month, -6, #selectedDate)
END
select #selectedDate, #previoussixmonthsdate
SELECT dbo.Filteredals_clinicappointment.als_clinicappointmentid [AppointmentID],
dbo.Filteredals_clinicappointment.als_statusname [AppointmentStatus],
dbo.Filteredals_clinicappointment.als_appointmentdatetime [AppointmentBookingTime],
Datepart(mm,dbo.Filteredals_clinicappointment.als_appointmentdatetime) [AppointmentMonth],
Datepart(yyyy,dbo.Filteredals_clinicappointment.als_appointmentdatetime) [AppointmentYear],
DATENAME(month,dbo.Filteredals_clinicappointment.als_appointmentdatetime) [AppointmentMonthName],
DATENAME (year,dbo.Filteredals_clinicappointment.als_appointmentdatetime) [AppointmentyearName]
FROM dbo.Filteredals_clinicappointment LEFT OUTER JOIN
dbo.Filteredrbs_clinicinstance ON dbo.Filteredals_clinicappointment.als_clinicinstance = dbo.Filteredrbs_clinicinstance.rbs_clinicinstanceid LEFT OUTER JOIN
dbo.Filteredrbs_clinic ON dbo.Filteredrbs_clinicinstance.rbs_clinic = dbo.Filteredrbs_clinic.rbs_clinicid LEFT OUTER JOIN
dbo.Filteredrbs_careproviders ON dbo.Filteredrbs_clinic.rbs_careprovider = dbo.Filteredrbs_careproviders.rbs_careprovidersid
WHERE dbo.Filteredrbs_careproviders.rbs_careprovidersid= #careprovider
AND dbo.Filteredals_clinicappointment.als_appointmentdatetime <= #selectedDate AND
dbo.Filteredals_clinicappointment.als_appointmentdatetime >=#previoussixmonthsdate
,dbo.Filteredals_clinicappointment.als_appointmentdatetime)= #SelectedYear
GROUP BY YEAR(AppointmentList.AppointmentBookingTime), MONTH(AppointmentList.AppointmentBookingTime)) as [DNAAppts]
Any help would be greatly appreciated.
One way to guarantee that you always get data for each month in the report range is to populate a temporary/derived table with the set of dates then left join that to the data.
Alternatively you can fake the data eg by storing the results of your query (or a sensible half way stage) into a temporary table then inspect that table to ensure there is data per expected month and if not add it.
Approach 3: union your query with a statement that returns a value for each month expected where there is not real data to match
There are probably even more ways to do this but hopefully that will offer you some inspiration
I have a simple problem which gave em a headache
I need to sort integers in a Database table TDBGrid ( its ABS database from component ace ) with the following order
0
1
11
111
121
2
21
211
22
221
and so on
which means every number starting with 1 should be under 1
1
11
111
5
55
can anyone help me?
thanks
This should work to get stuff in the right order:
Convert the original number to a string;
Right-pad with zeroes until you have a string of 3 characters wide;
(optional) Convert back to integer.
Then sorting should always work the way you want. Probably it's best to let the database do that for you. In MySQL you'd do something like this:
select RPAD(orderid,3,'0') as TheOrder
from MyTable
order by 1
I just ran this in SQL Server Management Studio - note I mixed up the rows in the input so they were not in sorted order:
create table #temp( ID Char(3));
insert into #temp (ID)
select '111' union
select '221';
select '0' union
select '21' union
select '1' union
select '11' union
select '211' union
select '121' union
select '2' union
select '22' union
select * from #temp order by ID;
I got the following output:
ID
----
0
1
11
111
121
2
21
211
22
221
(10 row(s) affected)
If you're getting different results, you're doing something wrong. However, it's hard to say what because you didn't post anything about how you're retrieving the data from the database.
Edit: Some clarification by the poster indicates that the display is in a TDBGrid attached to a table using Component Ace ABS Database. If that indeed is the case, then the answer is to create an index on the indicated column, and then set the table's IndexName property to use that index.
select cast(INT_FIELD as varchar(9)) as I
from TABxxx
order by 1