Exemple of query for the size of a Category

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

Size of a category

SQL

-- Selecting Wikimedia Commons Database
USE commonswiki_p;

-- Parameter of the query (Category to look for)
SET @cat = "Images_by_PierreSelim";

SELECT /* SLOW_OK */ 
	SUM(image.img_height*image.img_width) AS total_size
FROM image
CROSS JOIN page ON image.img_name = page.page_title
CROSS JOIN categorylinks ON page.page_id = categorylinks.cl_from
WHERE
categorylinks.cl_to = @cat
;

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