Semantic analysis exception - window function cannot be used in SELECT DISTINCT clause

The error message "Semantic analysis exception - window function cannot be used in SELECT DISTINCT clause" typically occurs when you try to use a window function (such as ROW_NUMBER() or RANK()) within a SELECT DISTINCT statement.

Window functions are used to perform calculations across a set of rows that are related to the current row. They require the use of an OVER clause to define the window or range of rows to consider.

The SELECT DISTINCT statement is used to retrieve unique rows from a table or result set. It is not compatible with window functions because window functions require the inclusion of all rows in the calculation.

To fix this error, you can either remove the window function from the SELECT DISTINCT statement or modify your query to include the necessary window function logic without using SELECT DISTINCT