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Finding Corresponding Max Values in SQL
You're attempting to retrieve specific values from your "videos" table, where each category's maximum video ID should correspond to the matching URL, date, title, and description. However, your query is currently selecting the first row for these values instead of those associated with the maximum video ID.
To resolve this issue and ensure that the values for different columns align with the maximum video ID for each category, you can use a SQL query like the following:
SELECT * FROM videos v WHERE v.video_id IN ( SELECT DISTINCT MAX(video_id) FROM videos GROUP BY video_category ) ORDER BY v.video_category ASC
This updated query guarantees that the values for URL, date, title, and description correspond to the maximum video ID for each category. It uses a subquery to identify the maximum video ID for each category, and then filters the main query to retrieve the matching rows.
Alternatively, you could also use the following query:
SELECT * FROM videos s JOIN (SELECT MAX(video_id) AS id FROM videos GROUP BY video_category) max ON s.video_id = max.id
This query uses a join to filter the "videos" table based on the maximum video ID for each category, ensuring that the selected rows have corresponding values for URL, date, title, and description aligned with the maximum video ID.
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