Join order determinism in polymorphic loads

(original reporter: aelaguiz) Run 1:

SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, categories.id AS categories_id, videos.id AS videos_id, videos.video_type_id AS videos_video_type_id, videos.poster_id AS videos_poster_id, videos.key AS videos_key, clubs.id AS clubs_id, brands.id AS brands_id, pcp_points.id AS pcp_points_id, pcp_points.poster_id AS pcp_points_poster_id, pcp_points.subject_id AS pcp_points_subject_id, pcp_points.is_point AS pcp_points_is_point, pcp_points.body AS pcp_points_body, pcp_points.origin_url AS pcp_points_origin_url, tags.id AS tags_id, pcp_vote_targets.id AS pcp_vote_targets_id, stufff_images.id AS stufff_images_id, stufff_images.image_id AS stufff_images_image_id, stufff_images.poster_id AS stufff_images_poster_id, stufff_images.source AS stufff_images_source, link_posts.id AS link_posts_id, link_posts.url AS link_posts_url, link_posts.edited_at AS link_posts_edited_at, link_posts.poster_id AS link_posts_poster_id, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation, text_posts.id AS text_posts_id, text_posts.body AS text_posts_body, text_posts.edited_at AS text_posts_edited_at, text_posts.poster_id AS text_posts_poster_id, products.id AS products_id, pcp_posts.id AS pcp_posts_id, pcp_posts.poster_id AS pcp_posts_poster_id, pcp_posts.subject_id_1 AS pcp_posts_subject_id_1, pcp_posts.subject_id_2 AS pcp_posts_subject_id_2, pcp_posts.vote_id_1 AS pcp_posts_vote_id_1, pcp_posts.vote_id_2 AS pcp_posts_vote_id_2, pcp_posts.top_point_id AS pcp_posts_top_point_id, comments.id AS comments_id, comments.body AS comments_body, comments.poster_id AS comments_poster_id, anon_1.users_id AS anon_1_users_id, anon_1.entities_id AS anon_1_entities_id, anon_1.entities_parent_id AS anon_1_entities_parent_id, anon_1.entities_type_id AS anon_1_entities_type_id, anon_1.entities_name AS anon_1_entities_name, anon_1.entities_created_at AS anon_1_entities_created_at, anon_1.entities_hotness AS anon_1_entities_hotness, anon_1.entities_hotness_dirty AS anon_1_entities_hotness_dirty, anon_1.entities_modified_at AS anon_1_entities_modified_at, anon_1.entities_up_votes AS anon_1_entities_up_votes, anon_1.entities_down_votes AS anon_1_entities_down_votes, anon_1.users_email AS anon_1_users_email, anon_1.users_username AS anon_1_users_username, anon_1.users_first_name AS anon_1_users_first_name, anon_1.users_last_name AS anon_1_users_last_name, anon_1.users_picture AS anon_1_users_picture, anon_1.users_origin_url AS anon_1_users_origin_url, anon_1.users_city AS anon_1_users_city, anon_1.users_state AS anon_1_users_state, anon_1.users_country AS anon_1_users_country, anon_1.users_gender AS anon_1_users_gender, anon_1.users_password AS anon_1_users_password, anon_1.users_bio AS anon_1_users_bio, anon_1.users_email_verified AS anon_1_users_email_verified, anon_1.users_email_validation AS anon_1_users_email_validation, anon_1.users_temp_password AS anon_1_users_temp_password, anon_1.users_temp_password_expiry AS anon_1_users_temp_password_expiry, anon_1.users_active AS anon_1_users_active, anon_1.users_admin AS anon_1_users_admin, anon_1.users_reputation AS anon_1_users_reputation, anon_2.users_id AS anon_2_users_id, anon_2.entities_id AS anon_2_entities_id, anon_2.entities_parent_id AS anon_2_entities_parent_id, anon_2.entities_type_id AS anon_2_entities_type_id, anon_2.entities_name AS anon_2_entities_name, anon_2.entities_created_at AS anon_2_entities_created_at, anon_2.entities_hotness AS anon_2_entities_hotness, anon_2.entities_hotness_dirty AS anon_2_entities_hotness_dirty, anon_2.entities_modified_at AS anon_2_entities_modified_at, anon_2.entities_up_votes AS anon_2_entities_up_votes, anon_2.entities_down_votes AS anon_2_entities_down_votes, anon_2.users_email AS anon_2_users_email, anon_2.users_username AS anon_2_users_username, anon_2.users_first_name AS anon_2_users_first_name, anon_2.users_last_name AS anon_2_users_last_name, anon_2.users_picture AS anon_2_users_picture, anon_2.users_origin_url AS anon_2_users_origin_url, anon_2.users_city AS anon_2_users_city, anon_2.users_state AS anon_2_users_state, anon_2.users_country AS anon_2_users_country, anon_2.users_gender AS anon_2_users_gender, anon_2.users_password AS anon_2_users_password, anon_2.users_bio AS anon_2_users_bio, anon_2.users_email_verified AS anon_2_users_email_verified, anon_2.users_email_validation AS anon_2_users_email_validation, anon_2.users_temp_password AS anon_2_users_temp_password, anon_2.users_temp_password_expiry AS anon_2_users_temp_password_expiry, anon_2.users_active AS anon_2_users_active, anon_2.users_admin AS anon_2_users_admin, anon_2.users_reputation AS anon_2_users_reputation FROM associated_view, entities LEFT OUTER JOIN categories ON entities.id = categories.id LEFT OUTER JOIN videos ON entities.id = videos.id LEFT OUTER JOIN clubs ON entities.id = clubs.id LEFT OUTER JOIN brands ON entities.id = brands.id LEFT OUTER JOIN pcp_points ON pcp_points.id = entities.id LEFT OUTER JOIN tags ON entities.id = tags.id LEFT OUTER JOIN pcp_vote_targets ON entities.id = pcp_vote_targets.id LEFT OUTER JOIN stufff_images ON entities.id = stufff_images.id LEFT OUTER JOIN link_posts ON entities.id = link_posts.id LEFT OUTER JOIN users ON entities.id = users.id LEFT OUTER JOIN text_posts ON entities.id = text_posts.id LEFT OUTER JOIN products ON entities.id = products.id LEFT OUTER JOIN pcp_posts ON pcp_posts.id = entities.id LEFT OUTER JOIN comments ON entities.id = comments.id LEFT OUTER JOIN (SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation FROM entities JOIN users ON entities.id = users.id) AS anon_1 ON anon_1.users_id = pcp_points.poster_id LEFT OUTER JOIN (SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation FROM entities JOIN users ON entities.id = users.id) AS anon_2 ON anon_2.users_id = pcp_posts.poster_id WHERE :param_1 = associated_view.left_id AND pcp_posts.id = associated_view.right_id 375

Run 2:

SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, videos.id AS videos_id, videos.video_type_id AS videos_video_type_id, videos.poster_id AS videos_poster_id, videos.key AS videos_key, clubs.id AS clubs_id, brands.id AS brands_id, categories.id AS categories_id, comments.id AS comments_id, comments.body AS comments_body, comments.poster_id AS comments_poster_id, tags.id AS tags_id, pcp_vote_targets.id AS pcp_vote_targets_id, pcp_posts.id AS pcp_posts_id, pcp_posts.poster_id AS pcp_posts_poster_id, pcp_posts.subject_id_1 AS pcp_posts_subject_id_1, pcp_posts.subject_id_2 AS pcp_posts_subject_id_2, pcp_posts.vote_id_1 AS pcp_posts_vote_id_1, pcp_posts.vote_id_2 AS pcp_posts_vote_id_2, pcp_posts.top_point_id AS pcp_posts_top_point_id, link_posts.id AS link_posts_id, link_posts.url AS link_posts_url, link_posts.edited_at AS link_posts_edited_at, link_posts.poster_id AS link_posts_poster_id, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation, text_posts.id AS text_posts_id, text_posts.body AS text_posts_body, text_posts.edited_at AS text_posts_edited_at, text_posts.poster_id AS text_posts_poster_id, products.id AS products_id, stufff_images.id AS stufff_images_id, stufff_images.image_id AS stufff_images_image_id, stufff_images.poster_id AS stufff_images_poster_id, stufff_images.source AS stufff_images_source, pcp_points.id AS pcp_points_id, pcp_points.poster_id AS pcp_points_poster_id, pcp_points.subject_id AS pcp_points_subject_id, pcp_points.is_point AS pcp_points_is_point, pcp_points.body AS pcp_points_body, pcp_points.origin_url AS pcp_points_origin_url, anon_1.users_id AS anon_1_users_id, anon_1.entities_id AS anon_1_entities_id, anon_1.entities_parent_id AS anon_1_entities_parent_id, anon_1.entities_type_id AS anon_1_entities_type_id, anon_1.entities_name AS anon_1_entities_name, anon_1.entities_created_at AS anon_1_entities_created_at, anon_1.entities_hotness AS anon_1_entities_hotness, anon_1.entities_hotness_dirty AS anon_1_entities_hotness_dirty, anon_1.entities_modified_at AS anon_1_entities_modified_at, anon_1.entities_up_votes AS anon_1_entities_up_votes, anon_1.entities_down_votes AS anon_1_entities_down_votes, anon_1.users_email AS anon_1_users_email, anon_1.users_username AS anon_1_users_username, anon_1.users_first_name AS anon_1_users_first_name, anon_1.users_last_name AS anon_1_users_last_name, anon_1.users_picture AS anon_1_users_picture, anon_1.users_origin_url AS anon_1_users_origin_url, anon_1.users_city AS anon_1_users_city, anon_1.users_state AS anon_1_users_state, anon_1.users_country AS anon_1_users_country, anon_1.users_gender AS anon_1_users_gender, anon_1.users_password AS anon_1_users_password, anon_1.users_bio AS anon_1_users_bio, anon_1.users_email_verified AS anon_1_users_email_verified, anon_1.users_email_validation AS anon_1_users_email_validation, anon_1.users_temp_password AS anon_1_users_temp_password, anon_1.users_temp_password_expiry AS anon_1_users_temp_password_expiry, anon_1.users_active AS anon_1_users_active, anon_1.users_admin AS anon_1_users_admin, anon_1.users_reputation AS anon_1_users_reputation, anon_2.users_id AS anon_2_users_id, anon_2.entities_id AS anon_2_entities_id, anon_2.entities_parent_id AS anon_2_entities_parent_id, anon_2.entities_type_id AS anon_2_entities_type_id, anon_2.entities_name AS anon_2_entities_name, anon_2.entities_created_at AS anon_2_entities_created_at, anon_2.entities_hotness AS anon_2_entities_hotness, anon_2.entities_hotness_dirty AS anon_2_entities_hotness_dirty, anon_2.entities_modified_at AS anon_2_entities_modified_at, anon_2.entities_up_votes AS anon_2_entities_up_votes, anon_2.entities_down_votes AS anon_2_entities_down_votes, anon_2.users_email AS anon_2_users_email, anon_2.users_username AS anon_2_users_username, anon_2.users_first_name AS anon_2_users_first_name, anon_2.users_last_name AS anon_2_users_last_name, anon_2.users_picture AS anon_2_users_picture, anon_2.users_origin_url AS anon_2_users_origin_url, anon_2.users_city AS anon_2_users_city, anon_2.users_state AS anon_2_users_state, anon_2.users_country AS anon_2_users_country, anon_2.users_gender AS anon_2_users_gender, anon_2.users_password AS anon_2_users_password, anon_2.users_bio AS anon_2_users_bio, anon_2.users_email_verified AS anon_2_users_email_verified, anon_2.users_email_validation AS anon_2_users_email_validation, anon_2.users_temp_password AS anon_2_users_temp_password, anon_2.users_temp_password_expiry AS anon_2_users_temp_password_expiry, anon_2.users_active AS anon_2_users_active, anon_2.users_admin AS anon_2_users_admin, anon_2.users_reputation AS anon_2_users_reputation FROM associated_view, entities LEFT OUTER JOIN videos ON entities.id = videos.id LEFT OUTER JOIN clubs ON entities.id = clubs.id LEFT OUTER JOIN brands ON entities.id = brands.id LEFT OUTER JOIN categories ON entities.id = categories.id LEFT OUTER JOIN comments ON entities.id = comments.id LEFT OUTER JOIN tags ON entities.id = tags.id LEFT OUTER JOIN pcp_vote_targets ON entities.id = pcp_vote_targets.id LEFT OUTER JOIN pcp_posts ON pcp_posts.id = entities.id LEFT OUTER JOIN link_posts ON entities.id = link_posts.id LEFT OUTER JOIN users ON entities.id = users.id LEFT OUTER JOIN text_posts ON entities.id = text_posts.id LEFT OUTER JOIN products ON entities.id = products.id LEFT OUTER JOIN stufff_images ON entities.id = stufff_images.id LEFT OUTER JOIN pcp_points ON pcp_points.id = entities.id LEFT OUTER JOIN (SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation FROM entities JOIN users ON entities.id = users.id) AS anon_1 ON anon_1.users_id = pcp_posts.poster_id LEFT OUTER JOIN (SELECT entities.id AS entities_id, entities.parent_id AS entities_parent_id, entities.type_id AS entities_type_id, entities.name AS entities_name, entities.created_at AS entities_created_at, entities.hotness AS entities_hotness, entities.hotness_dirty AS entities_hotness_dirty, entities.modified_at AS entities_modified_at, entities.up_votes AS entities_up_votes, entities.down_votes AS entities_down_votes, users.id AS users_id, users.email AS users_email, users.username AS users_username, users.first_name AS users_first_name, users.last_name AS users_last_name, users.picture AS users_picture, users.origin_url AS users_origin_url, users.city AS users_city, users.state AS users_state, users.country AS users_country, users.gender AS users_gender, users.password AS users_password, users.bio AS users_bio, users.email_verified AS users_email_verified, users.email_validation AS users_email_validation, users.temp_password AS users_temp_password, users.temp_password_expiry AS users_temp_password_expiry, users.active AS users_active, users.admin AS users_admin, users.reputation AS users_reputation FROM entities JOIN users ON entities.id = users.id) AS anon_2 ON anon_2.users_id = pcp_points.poster_id WHERE :param_1 = associated_view.left_id AND pcp_posts.id = associated_view.right_id 375

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