Commons - Files from a category with list of categories in a file

This query is marked as a draft This query has been published by Ranjithsiji.

Give the list of files in a category. It also gives the categories attached to each file in that category. This is used to find union, intersection, missing files in a category in Commons. Very usefull in Wiki Loves X

SQL

SELECT
    page_title AS file_name,
    GROUP_CONCAT(cl_to.cl_to) AS categories
FROM
    page
JOIN
    categorylinks AS cl_from ON page.page_id = cl_from.cl_from
JOIN
    categorylinks AS cl_to ON cl_from.cl_from = cl_to.cl_from
WHERE
    cl_from.cl_to = 'Images_from_Wiki_Loves_Birds_India_2024'
GROUP BY
    page_title;

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