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Salva_BI_DAX's avatar
Salva_BI_DAX
Regular Visitor
3 years ago
Solved

DAX sub query with condition

Hi everyone,

 

I have been struggle for a while for a subquery in DAX. I have the following table 

IDCountryNamePeriod
ID1USA201412
ID1USA201506
ID1USA201512
ID10CAB201412
ID10CAB201506
ID10CAB201512
ID10CABB201606
ID10CABB201612
ID10CABB201706
ID10CABB201712
ID10CABB201806
ID10CABB201809
ID10CABB201812
ID10MXC201712
ID10MXC201806
ID10MXCC201809
ID10MXCC201812
ID100IED201412
ID100IED201506
ID100IED201512
ID100IEDD201606
ID100IEDD201612
ID100IEDD201706
ID100IEDD201712
ID100IEDD201806
ID100IEDD201809
ID100IEDD201812

 

The user has one slicer, the period and can select start and end perido (for instance from 201412 - 201612). Once, the period is selected, I need to create a report that show a list of a unique items (Name). There are few condition:

 

  • if I select from 201412 - 201612 I need to see only one "Name" that belong to to that periods (201412, 201506, 201512, 201606, 201612)
  • also the Name could changes in the period that I selected. For instance, ID10 will show BB and ID100 DD

This means that the output looks like:

_ID_Country_Name
ID10CABB
ID100IEDD

 

I have tried to write a DAX but it is not working properly

 

Output =
var _min = CALCULATE(Min(Periods[Period]),ALLEXCEPT(Periods,Periods[Period])) // this return the min period
var _max = CALCULATE(Max(Periods[Period]),ALLEXCEPT(Periods,Periods[Period])) // this return the max period
 
// this return the number of periods that the Name belogs (I dont know when to use it) 
var _NumOfPeriod= COUNTX(CALCULATETABLE(
Input,
FILTER(Input, Input[Period] >= Valmin && Input[Period] <= Valmax)
), Input[id])
 
// this should return the output
return
SELECTCOLUMNS(
FILTER(Input, [Period] >= valmin && [Period] <= valmax),
"_ID", [ID],
"_Country", [Country],
"Name", LOOKUPVALUE(_NameTable[name],_NameTable[key],CONCATENATE(Valmax,[id])) // I have created another table with a list of Name (see below) 
)
 
-----
_NameTable =

// this table has a relation with Periods so he will show the periods selected 

return
SUMMARIZE (
Input,
Input[id],
Input[name],
Input[Period],
"Key", CONCATENATE([Period], [id])
)
 
 

If someone could help me on this, it will be greatly appreciated.

 

Many thanks,

Salva

  • v-yueyunzh-msft's avatar
    v-yueyunzh-msft
    3 years ago

    Hi , Salva_BI_DAX 

    Here are the steps you can refer to :
    (1)My test data is the same as yours.

    (2)We can create a measure to filter our visual :

    Display Flag = 
var _slicer_min =CALCULATE( MIN('Table'[Period]),ALLSELECTED('Table'))
var _slicer_max=CALCULATE( MAX('Table'[Period]),ALLSELECTED('Table'))
var _slicer_count =COUNTROWS( DISTINCT( SELECTCOLUMNS( FILTER(ALL('Table') , 'Table'[Period]>=_slicer_min && 'Table'[Period] <=_slicer_max),"Period",[Period])))
var _current_id =SELECTEDVALUE('Table'[ID])
var _id_count =COUNTROWS( FILTER('Table', 'Table'[ID]=_current_id))
return
if(_id_count= _slicer_count ,1,0)

    (3)Then we need to create another measure :

    Name2 = var _max = MAX('Table'[Period])
var _current_id = SELECTEDVALUE('Table'[ID])
var _t =FILTER('Table', 'Table'[ID]=_current_id && 'Table'[Period]=_max)
return
MAXX(_t ,[Name])

    (4)Then we need to put the [Display Flag] measure on the "Filter on this visual" and the [ID],[Country],[Name2] on the visual , the result is as follows:

    If this method does not meet your needs, you can provide us with your special sample data and the desired output sample data in the form of tables, so that we can better help you solve the problem.

     

    Best Regards,

    Aniya Zhang

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

     

2 Replies

  • v-yueyunzh-msft's avatar
    v-yueyunzh-msft
    Community Support
    3 years ago

    Hi , Salva_BI_DAX 

    Here are the steps you can refer to :
    (1)My test data is the same as yours.

    (2)We can create a measure to filter our visual :

    Display Flag = 
var _slicer_min =CALCULATE( MIN('Table'[Period]),ALLSELECTED('Table'))
var _slicer_max=CALCULATE( MAX('Table'[Period]),ALLSELECTED('Table'))
var _slicer_count =COUNTROWS( DISTINCT( SELECTCOLUMNS( FILTER(ALL('Table') , 'Table'[Period]>=_slicer_min && 'Table'[Period] <=_slicer_max),"Period",[Period])))
var _current_id =SELECTEDVALUE('Table'[ID])
var _id_count =COUNTROWS( FILTER('Table', 'Table'[ID]=_current_id))
return
if(_id_count= _slicer_count ,1,0)

    (3)Then we need to create another measure :

    Name2 = var _max = MAX('Table'[Period])
var _current_id = SELECTEDVALUE('Table'[ID])
var _t =FILTER('Table', 'Table'[ID]=_current_id && 'Table'[Period]=_max)
return
MAXX(_t ,[Name])

    (4)Then we need to put the [Display Flag] measure on the "Filter on this visual" and the [ID],[Country],[Name2] on the visual , the result is as follows:

    If this method does not meet your needs, you can provide us with your special sample data and the desired output sample data in the form of tables, so that we can better help you solve the problem.

     

    Best Regards,

    Aniya Zhang

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

     

  • Salva_BI_DAX's avatar
    Salva_BI_DAX
    Regular Visitor
    3 years ago

    Hello, v-yueyunzh-msft 

     

    This is exactly what I was looking for ğŸ˜€

    Indeed, I saw in another form that the best approch is to create the measures instead to create subtable.

    Many thanks