Conditional Column, Index Column And Duplicate Column In Power BI


In this article, we are going to learn about the conditional column and New Parameter – What If in Power BI. We will learn what  condition column is and how can we use it. After that we will see how to create a New Parameter – What If in Power BI desktop.

Conditional Column

Create a new column that conditionally adds the values in the currently selected column.

We can define the single as well multiple conditions while adding a conditional column. Once those criteria which are given during defining the conditional column matches the value automatically appears in that column based on that condition.

Creating or Adding Conditional Column

According to the above statement values in conditional column are based on the condition what we specify during the condition. So first I shall import a table and then I shall give condition for conditional column.

For this article excel sheet has been taken as data taken which are attached also for reference. To know more about how to use excel as a data source in Power BI desktop please have a look at my previous article,

Below are the steps for creating conditional column after importing the table.

Click on Edit Queries option of home tab which open the query editor window it will open query editor window as below. Now you have to click on Add Column tab & then click on Conditional Column.

Add Column – Conditional Column

Now a window will appear here you have to provide the name and criteria or condition for the conditional column as below.


Point number 1 is the name of conditional column, point number 2 is the Add rule button after clicking on the Add rule button you can add the new condition. By default one condition option is already appeared and you don’t need to click on Add rule button for adding single condition. Point number 3 is the added condition with their value which is in Output column. Point number 4 is the values which appear in conditional column if not any rule or condition matches. Now click on OK. Now you can see the conditional column with their values as below.


Point number 1 in above image is the name and value of Conditional Column while point number 2 denotes the added steps. Steps are the track of every activity what you do in Power BI query editor.

Editing or Deleting the Conditional Column

You edit the conditional column by clicking on added step setting icon and you can also delete the conditional column by clicking on cross icon of added steps as shown in above image. Once you click on setting icon again it opens a window which is as below where you can change the rule.

You can click on highlighted ellipseicon as below for Deleting or moving up and down the rule.


Alternatively you can also delete the column by right clicking and choosing the Remove option as in below image.


Index Column

Create a new column with an index starting at 0.

Adding Index Column

Click on Add Column – Index Column will by default create the column with name Index and value with starting 0 and increment each value by 1 with the previous values.


You can create the starting index with 1 after selecting the From 1 option of Index column as below.


Adding Custom index Column

You can create your own custom index column by selecting the custom option of Index column dropdown as shown in above image. Once you click on Custom a new window as below opens for providing the starting index and increment value.


Now click on OK you will get the Index column as below

Editing or Deleting the Index Column

You can edit or delete the Index column with the same step as you have followed to edit and delete the conditional column. Just you have to click on setting option of added step for editing and delete or cross option for deleting the Index column. An added step is as below.

Duplicate Column

Create a new column that duplicates the values in the currently selected column.

Creating or Adding Duplicate Column

For adding Duplicate column first select the column for which you want to create a duplicate or copy then click on Duplicate Column option of Add Column tab.

Add Column – Duplicate column

Once you will follow the above step the duplicate column will be created as below,



Editing or Duplicating Column

For this you can follow the same step as you have followed for editing and deleting the conditional column or index column


In this article we have learned about the three important columns category conditional column, index column and duplicate column in Power BI. We have learned the definition and how to create, edit or delete these columns? All these options are available in query editor window Add Column tab.

Hope you will learn and enjoy from this article. You’re welcome to like, comment, share and make any type of suggestion for my appreciation.