-- Drop the id column from the remote_image table, just use link ALTER TABLE remote_image DROP COLUMN id, ADD PRIMARY KEY (link), DROP CONSTRAINT remote_image_link_key; -- No good way to do references here unfortunately, unless we combine the images tables -- The link should be the URL, not the pictrs_alias, to allow joining from post.thumbnail_url CREATE TABLE image_details ( link text PRIMARY KEY, width integer NOT NULL, height integer NOT NULL, content_type text NOT NULL );