Power Platform - General
Category
Jan 10, 2025
Published date
Text
Article Type
AI Summary
- The article addresses the challenge of ensuring Power Query works with data sources that have a changing schema, particularly dealing with missing fields in APIs and similar but not identical data files.
- For scenarios where a single column is missing, the fix involves adding the missing column using the Table.AddColumn function and incorporating logic to check if the column already exists before adding it.
- Multiple missing columns can be addressed by creating an empty table with all the required columns and appending it to the original table using the Append Queries function.
- An advanced note mentions that when appending tables, the column order follows the first table, and users can manipulate column order by adjusting the Table.Combine step.
- The article suggests writing dynamic M code to handle missing columns, emphasizing the importance of practicing to effectively work with unclean data in Power Query.
- A sample M query provided in the article demonstrates how to create a dynamic query for handling missing columns in a dataset.
- The process of creating a blank table with all necessary columns and combining it with the original table is highlighted as a method to ensure all required columns are present in the final query.
- The article concludes by encouraging users to strive for dynamic queries and offering best wishes for success in handling data challenges.
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