There are two main ways to sort data by one or more columns in Power Query:

1. Using the User Interface (UI):

* Select the column(s) you want to sort by. You can hold Ctrl and click on multiple columns for multi-column sorting.
* Click the down arrow next to the chosen column header.
* - Choose "Sort Ascending" to sort from A to Z (smallest to largest for numbers)
* - Choose "Sort Descending" to sort from Z to A (largest to smallest for numbers)
* Repeat for additional sorting criteria by clicking the down arrow on the next column header and selecting the desired sort order.

2. Using the M Language:

* In the Power Query Editor, navigate to the "Home" tab and click "Transform" > "Advanced" > "Sort."
* This will open the "Sort" window.
* In the "Column" dropdown, select the first column you want to sort by.
* Choose "Ascending" or "Descending" for the sort order.
* If you want to sort by multiple columns, click "Add Sort By" and repeat the process for each additional column.

Here are some additional points to consider:

* Sorting happens in the order you define the columns. The first selected column will be sorted first, then the second, and so on.
* You can use the "Custom Order" option in the "Sort" window to define a specific sorting order for text values that may not be alphabetical by default (e.g., custom product codes).
* Power Query sorts by default based on the data type of the column. Numbers are sorted numerically, text is sorted alphabetically, and dates are sorted chronologically.