Q&A for linguists, teachers and students of the Korean language
WITH RankedQuestions AS ( SELECT Id, CAST(ViewCount AS BIGINT) AS ViewCount, ROW_NUMBER() OVER (ORDER BY ViewCount DESC) AS row_num, COUNT(*) OVER () AS total_questions FROM Posts WHERE PostTypeId = 1 -- 1 represents questions in the Posts table ), TopPercentViews AS ( SELECT SUM(CASE WHEN row_num <= CEILING(0.01 * total_questions) THEN CAST(ViewCount AS FLOAT) ELSE 0 END) AS top_1_views, SUM(CASE WHEN row_num <= CEILING(0.05 * total_questions) THEN CAST(ViewCount AS FLOAT) ELSE 0 END) AS top_5_views, SUM(CASE WHEN row_num <= CEILING(0.10 * total_questions) THEN CAST(ViewCount AS FLOAT) ELSE 0 END) AS top_10_views FROM RankedQuestions ), TotalViews AS ( SELECT SUM(CAST(ViewCount AS FLOAT)) AS total_views FROM Posts WHERE PostTypeId = 1 -- 1 represents questions in the Posts table ) SELECT (top_1_views * 100.0 / NULLIF(total_views, 0)) AS top_1_percent_view_ratio, (top_5_views * 100.0 / NULLIF(total_views, 0)) AS top_5_percent_view_ratio, (top_10_views * 100.0 / NULLIF(total_views, 0)) AS top_10_percent_view_ratio FROM TopPercentViews, TotalViews;