Register now to learn Fabric in free live sessions led by the best Microsoft experts. From Apr 16 to May 9, in English and Spanish.
Hi All,
I have two tables with Many to Many relation, I am trying to create a column to find the distinct count of "Id" and group it by start and end time. I don't want it as a measure because I am going to use the value from the new column to compare it with another column.
TABLE A
ID || | Start_Time || | End_Time || | 15_Min_Time |
1 || | 2020-01-02 10:01:00 || | 2020-01-02 10:08:00 || | 2020-01-02 10:00:00 |
2 || | 2020-01-02 10:01:00 || | 2020-01-02 10:08:00 || | 2020-01-02 10:00:00 |
3 || | 2020-01-02 10:06:00 || | 2020-01-02 10:12:00 || | 2020-01-02 10:00:00 |
4 || | 2020-01-02 10:18:00 || | 2020-01-02 10:30:00 || | 2020-01-02 10:15:00 |
TABLE B
Time || | Info_Value || | 15_Min_Time |
2020-01-02 10:00:00 || | 2 || | 2020-01-02 10:00:00 |
2020-01-02 10:01:00 || | 1 || | 2020-01-02 10:00:00 |
2020-01-02 10:02:00 || | 3 || | 2020-01-02 10:00:00 |
2020-01-02 10:03:00 || | 4 || | 2020-01-02 10:00:00 |
2020-01-02 10:04:00 || | 5 || | 2020-01-02 10:00:00 |
2020-01-02 10:05:00 || | 1 || | 2020-01-02 10:00:00 |
TABLE A and TABLE B are having M:M relation with 15_Min_Time
Expected Output:
I want a column with distinct count of id but grouped by Start_Time
ID || | Start_Time || | End_Time || | 15_Min_Time || | New_Column |
1 || | 2020-01-02 10:01:00 || | 2020-01-02 10:08:00 || | 2020-01-02 10:00:00 || | 2 |
2 || | 2020-01-02 10:01:00 || | 2020-01-02 10:08:00 || | 2020-01-02 10:00:00 || | 2 |
3 || | 2020-01-02 10:06:00 || | 2020-01-02 10:12:00 || | 2020-01-02 10:00:00 || | 1 |
I tried the following formula
New_Column = CALCULATE(DISTINCTCOUNT(Table A[id]), GroupBy(Table A[Start_Time], Table A[End_Time]))
Error --- Circular Dependency Error
New_Column = SUMMARIZE(Table A,Table A[start_time],Table A[End_time],"Distinct ID",DISTINCTCOUNT(Table A[id]))
Error ---- The expression refers to multiple columns.
Solved! Go to Solution.
I resolved this issue by going through the article https://www.sqlbi.com/articles/understanding-circular-dependencies/ I used the ALLExcept function to overcome the issue.
New_Col = CALCULATE(DISTINCTCOUNT(Table A[id]),GROUPBY(Table A,Table A[start_time], Table B[End_time]),ALLEXCEPT(Table A,Table A[Calculated_Col]))
NOTE:
Calculated_Col is a column that I created to get the average of Table B(Info_Value), power bi considers all the columns in the table while creating "New_Col", so I was getting a Circular Dependency error, ALLExcept resolves that issue.
@Anonymous First, I would highly recommend trying to get rid of any direct many-to-many relationships. Use a bridge table to connect those two tables and your life will be easier.
As for your errors. Your second one is because SUMMARIZE returns a table, not a single scalar value.
The first error, circular dependencies are difficult to resolve without more information.
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882
Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490
The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.
@Greg_Deckler Thanks for sharing the information, I will work on resolving the M to M cardinality, I have updated my question with more information, hope this will help in resolving the issue.
I resolved this issue by going through the article https://www.sqlbi.com/articles/understanding-circular-dependencies/ I used the ALLExcept function to overcome the issue.
New_Col = CALCULATE(DISTINCTCOUNT(Table A[id]),GROUPBY(Table A,Table A[start_time], Table B[End_time]),ALLEXCEPT(Table A,Table A[Calculated_Col]))
NOTE:
Calculated_Col is a column that I created to get the average of Table B(Info_Value), power bi considers all the columns in the table while creating "New_Col", so I was getting a Circular Dependency error, ALLExcept resolves that issue.
Covering the world! 9:00-10:30 AM Sydney, 4:00-5:30 PM CET (Paris/Berlin), 7:00-8:30 PM Mexico City
Check out the April 2024 Power BI update to learn about new features.
User | Count |
---|---|
111 | |
95 | |
80 | |
68 | |
59 |
User | Count |
---|---|
150 | |
119 | |
104 | |
87 | |
67 |