40 Power Query Editor features in Power BI along with examples:
1. Filter Rows: Remove rows based on conditions.
Example: Remove rows with a null value in the "CustomerName" column.
2. Remove Duplicates: Eliminate duplicate rows.
Example: Remove duplicate entries based on the "OrderID" column.
3. Sort Rows: Arrange rows in ascending or descending order.
Example: Sort data by "Date" column in descending order.
4. Replace Values: Substitute one value with another.
Example: Replace "N/A" with "Unknown" in the "Status" column.
5. Split Columns: Divide a column into multiple columns.
Example: Split "FullName" into "FirstName" and "LastName."
6. Merge Queries: Combine data from multiple sources.
Example: Merge customer and order data based on the "CustomerID."
7. Group By: Aggregate data based on a specific column.
Example: Group sales data by "ProductCategory" and calculate the sum of sales.
8. Pivot Columns: Transform row values into column headers.
Example: Pivot "Month" values into separate columns.
9. Unpivot Columns: Transform columns into rows.
Example: Unpivot "Quarter1," "Quarter2," and "Quarter3" columns.
10. Rename Columns: Change column names.
Example: Rename "Column1" to "Revenue."
11. Replace Errors: Replace error values with custom text.
Example: Replace errors with "Data Not Available."
12. Data Type Conversion: Convert data types.
Example: Change "Date" columns to the date type.
13. Fill Down: Fill missing values with values from the previous row.
Example: Fill down missing values in the "Country" column.
14. Aggregate Columns: Create new columns with aggregate calculations.
Example: Calculate the average of "Sales" and "Profit."
15. Conditional Columns: Add new columns based on conditions.
Example: Create a column for "High Sales" if sales > $1000.
16. Add Index Column: Add a unique identifier column.
Example: Add an index column for row numbering.
17. Remove Columns: Eliminate unnecessary columns.
Example: Remove "Notes" and "Description" columns.
18. Duplicate Column: Create a copy of a column.
Example: Duplicate "OrderDate" as "OrderDate_Copy."
19. Extract Text: Extract specific parts of text.
Example: Extract the domain from email addresses.
20. Convert to Table: Change values to a table format.
Example: Convert a list of values to a table.
21. Merge Queries as New: Combine queries without modifying originals.
Example: Merge "Customers" and "Orders" as a new query.
22. Append Queries: Combine queries vertically.
Example: Append "Q1 Sales" and "Q2 Sales" tables.
23. Replace Columns: Replace one column with another.
Example: Replace "Address" with "FullAddress."
24. Extract Date/Time: Extract components like year or month.
Example: Extract the year from "OrderDate."
25. Date/Time Operations: Perform calculations on date/time values.
Example: Calculate the difference between two dates.
26. Merge Queries with Joins: Merge tables with different types of joins.
Example: Merge "Employees" and "Departments" using an inner join.
27. Keep First Rows: Keep only the first N rows.
Example: Keep the first 100 rows in the dataset.
28. Keep Last Rows: Keep only the last N rows.
Example: Keep the last 50 rows in the dataset.
29. Conditional Column Based on Another Column: Create a column based on the values in another column.
Example: Create a column to categorize customers as "High Value" if they have spent over $1000.
30. Table.SplitColumn: Split a table into multiple columns.
Example: Split a column of comma-separated values into separate columns.
31. Table.Group: Group data by one or more columns.
Example: Group sales data by "ProductCategory" and calculate the sum of sales within each group.
32. Table.ExpandTableColumn: Expand a table column to display its values.
Example: Expand a column containing JSON data.
33. Table.AddColumn: Add a new column with custom logic.
Example: Add a column that calculates a running total.
34. Table.Buffer: Cache a table for better performance.
Example: Use Table.Buffer to improve query performance.
35. Table.Combine: Combine tables horizontally.
Example: Combine two tables with identical structures.
36. List.Transform: Apply a transformation to a list.
Example: Apply a custom function to each element of a list.
37. Custom Functions: Create and use custom functions.
Example: Define a custom function to format phone numbers.
38. Error Handling: Handle errors gracefully in your queries.
Example: Add logic to handle missing data without breaking the query.
39. Parameterized Queries: Create queries that accept parameters.
Example: Create a parameterized query to filter data based on user input.
40. Query Dependencies: View and manage query dependencies.
Example: Analyze how queries are connected in the Power Query Editor.
These Power Query Editor features allow you to transform, shape, and combine data from various sources to create meaningful insights in your Power BI reports.
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