Use the Filter Rows transformation to keep only rows that meet specified conditions.
Filtering rows reduces the amount of data in a query and ensures that only relevant records are available for analysis and reporting.
The following example filters a query to keep only rows where Country is United States of America and Sum of COGS is greater than 500250.
On the Transform tab, select Filter Rows.

The Filter Rows dialog opens.
Enter the following example filters. For a full list of filter options, see Filter dialog options later in the article.

After you apply the filter, only rows that satisfy the specified conditions remain in the query results.

The applied filter appears in Performed Steps and applies to subsequent transformations, calculations, and reporting scenarios.
The filter dialog supports the following options: