WooCommerce database query : Get product category image path+name from thumbnail_id [closed]

It looks like I’ve managed to work it out.

I needed to:

  • JOIN to wp_posts

With the link keys:

  • TABLE : wp_postmeta
    • column : meta_key
  • TABLE : wp_posts
    • column : ID
SELECT *
    FROM wp_terms wpt
LEFT JOIN
    wp_termmeta wptm
    ON 
        wptm.term_id = wpt.term_id
    AND
        wptm.meta_key = 'thumbnail_id'
LEFT JOIN
    wp_postmeta wppm
    ON
        wppm.post_id = wptm.meta_value AND
        wppm.meta_key = 'wp_attached_file'
LEFT JOIN
    wp_posts wpp
    ON 
        wpp.ID = wptm.meta_value
WHERE
    wpt.term_id IN (SELECT term_id FROM wp_term_taxonomy WHERE taxonomy='product_cat')

That’s given me the listing I want.

I now have a column:

| category name | category slug | … | … | guid |

That has the image url:

https://test.somesite.com/wp-content/uploads/2021/06/category-Machine-Screws_150x150.svg

I am now going to EXPORT to .CSV

Then I’ll try to work out how to get to my end goal:

My end goal is to do an SQL update to associate images with my product
categories. I have 1,400 product categories and counting – half-way
though importing 31,000 products. Probably 60% of the subcategories
share the same images. Doing the image links via the Admin GUI is too
labour intensive.

So my aim will be to:

  • find the thumbnail_id
  • for each common image
  • shared by each multiple ‘common’ Product Category

Then I should be able to update that thumbnail_id into each common Product Category directly in the database.

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