Compare 2 rows in 2 tables and find the number of differences

[simon-uk]

Hi

I am trying to compare the rows in 2 tables to return the number fo difference in a single row with the same key:

Table 1

Entity        Param 1   Param 2    Param 3   Param 4   Param 5    Param 6    Param 7 Param 8      Param 9 Param 10 Param 11

Test

11

2

3

4

5

6

7

19

9

12

11

Table 2

Entity         Param 1  Param 2    Param 3    Param 4  Param 5    Param 6    Param 7   Param 8   Param 9   Param 10 Param 11

Test

1

2

3

4

5

6

7

8

9

10

11

I would expect to return

Test = 4 differences (utlimately I would like to drill to those diefferneces)

Can anyone help

[JarroVGIT]

Interesting question, I gave it a shot by doing the following;

I've created two tables with Entity and 5 Param columns:

Table1

Table2 - Note Param1 en Param4

Comparing these in current form is very difficult, so I unpivoted the Param-columns in both;

Tabel2 - Unpivoted and renamed columnsTabel1 - Unpivoted and renamed columns

Now, we can create a calculated column in one of the tables (I've chosen Table1) and entity by entity (in this case just 'Test') check whether the value corresponding with the Param(X) is the same in Table 2. The formula is:

IsNotTheSame = CALCULATE(COUNTA(Table1[ParamValue]), FILTER(Table2, Table2[Entity] = Table1[Entity] && Table2[Params] = Table1[Params] && Table2[ParamValue] <> Table1[ParamValue]))

Now, you can use this column in calculating how many discrepancies there are between Entities in Table1 and Table2:

Please mark this answer as Solution if this answered your question 🙂

[simon-uk]

Hi djerro123

Nice neat answer but......can I automate the unpivot and rename functions as my source data is in the 'pivotted' format?

Regards

Simon

[JarroVGIT · Accepted solution]

The unpivotting is done in the Query Editor and will be applied on every refresh of the data. This means Power BI will do;

1. retrieve the data in original format

2. Applies all steps as per Query Definition

3. Updates all visuals.

In step two is the unpivoting of the tables and will persist 🙂

Kind regards

Djerro123

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