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Software ==>	Excel (128 exercises)
Topic ==>	Querying data (18 exercises)
Level ==>	Relatively easy
Subject ==>	Excel training

Use Power Query to group and aggregate a table of the world's tallest buildings.

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

Before you can do this exercise, you'll need to download and unzip this file .

Create a blank Excel workbook and save it as Grouping Buildings.xlsx.

Import the Buildings worksheet from the Tallest Buildings.xlsx file from the folder shown at the top of this exercise. Load the query into a table on a new worksheet.

Edit the query and choose to group the data by Country, adding a column called Count buildings using a Count Rows aggregation. Sort the resulting table in descending order of Count buildings.

A Power Query table after applying grouping and aggregating.

The top three results.

Edit the Grouped Rows step and use Advanced options to add a second level of grouping using the City column.

Grouping by multiple columns in a Power Query table.

The same countries appear in the top three results.

Edit the Grouped Rows step again and add columns to calculate the sum and average of the Height m column.

A grouped table in Power Query with multiple aggregation columns.

The extra aggregation columns.

Close and apply the changes to the query then save and close the workbook.

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