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176 lines
7.4 KiB
SQL
176 lines
7.4 KiB
SQL
-- SPDX-License-Identifier: MIT
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-- Copyright 2017 J. King, Dustin Wilson et al.
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-- See LICENSE and AUTHORS files for details
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-- Create a temporary table mapping old article IDs to new article IDs per-user.
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-- Any articles which have only one subscription will be unchanged, which will
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-- limit the amount of disruption
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create table arsse_articles_map(
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article bigint unsigned not null,
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subscription bigint unsigned not null,
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id serial
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);
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-- alter table arsse_articles_map auto_increment = (select max(id) + 1 from arsse_articles);
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insert into arsse_articles_map
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select 0, 0, max(id) from arsse_articles;
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delete from arsse_articles_map;
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insert into arsse_articles_map(article, subscription)
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select
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a.id as article,
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s.id as subscription
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from arsse_articles as a join arsse_subscriptions as s using(feed)
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where feed in (
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select feed from (select feed, count(*) as count from arsse_subscriptions group by feed) as c where c.count > 1
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)
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order by a.id, s.id;
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insert into arsse_articles_map(article, subscription, id)
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select
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a.id as article,
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s.id as subscription,
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a.id as id
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from arsse_articles as a join arsse_subscriptions as s using(feed)
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where feed in (
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select feed from (select feed, count(*) as count from arsse_subscriptions group by feed) as c where c.count = 1
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);
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-- Add any new columns required for the articles table
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alter table arsse_articles add column subscription bigint unsigned;
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alter table arsse_articles add column "read" smallint not null default 0;
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alter table arsse_articles add column starred smallint not null default 0;
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alter table arsse_articles add column hidden smallint not null default 0;
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alter table arsse_articles add column marked datetime(0);
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alter table arsse_articles add column note longtext;
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-- Populate the articles table with new information; this either inserts or updates in-place
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insert into arsse_articles(id,feed,subscription,"read",starred,hidden,published,edited,modified,marked,url,title,author,guid,url_title_hash,url_content_hash,title_content_hash,note)
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select
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i.id,
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a.feed,
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i.subscription,
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coalesce(m."read",0),
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coalesce(m.starred,0),
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coalesce(m.hidden,0),
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a.published,
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a.edited,
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a.modified,
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m.modified,
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a.url,
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a.title,
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a.author,
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a.guid,
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a.url_title_hash,
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a.url_content_hash,
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a.title_content_hash,
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coalesce(m.note,'')
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from arsse_articles_map as i
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left join arsse_articles as a on a.id = i.article
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left join arsse_marks as m on a.id = m.article and m.subscription = i.subscription
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on duplicate key update
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subscription = values(subscription),
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"read" = values("read"),
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starred = values(starred),
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hidden = values(hidden),
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marked = values(marked),
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note = values(note);
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-- Next create the subsidiary table to hold article contents
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create table arsse_article_contents(
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-- contents of articles, which is typically large text
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id bigint unsigned primary key,
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content longtext,
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foreign key(id) references arsse_articles(id) on delete cascade on update cascade
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) character set utf8mb4 collate utf8mb4_unicode_ci;
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insert into arsse_article_contents
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select
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m.id,
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case when s.scrape = 0 then a.content else coalesce(a.content_scraped, a.content) end
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from arsse_articles_map as m
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left join arsse_articles as a on a.id = m.article
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left join arsse_subscriptions as s on s.id = m.subscription;
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-- Drop the two content columns from the article table as they are no longer needed
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alter table arsse_articles drop column content;
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alter table arsse_articles drop column content_scraped;
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-- Create one edition for each renumbered article
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insert into arsse_editions(article) select id from arsse_articles_map where id <> article;
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-- Create enclures for renumbered articles
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insert into arsse_enclosures(article, url, type)
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select
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m.id, url, type
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from arsse_articles_map as m
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join arsse_enclosures as e on m.article = e.article
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where m.id <> m.article;
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-- Create categories for renumbered articles
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insert into arsse_categories(article, name)
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select
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m.id, name
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from arsse_articles_map as m
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join arsse_categories as c on m.article = c.article
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where m.id <> m.article;
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-- Create label associations for renumbered articles
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insert into arsse_label_members
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select
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label, m.id, subscription, assigned, l.modified
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from arsse_articles_map as m
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join arsse_label_members as l using(article, subscription)
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where m.id <> m.article;
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-- Drop the subscription column from the label members table as it is no longer needed (there is now a direct link between articles and subscriptions)
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alter table arsse_label_members drop foreign key arsse_label_members_ibfk_3;
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alter table arsse_label_members drop column subscription;
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-- Clean up the articles table: delete obsolete rows, add necessary constraints on new columns which could not be satisfied before inserting information, and drop the obsolete feed column
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delete from arsse_articles where id in (select article from arsse_articles_map where id <> article);
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delete from arsse_articles where subscription is null;
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alter table arsse_articles modify subscription bigint unsigned not null;
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alter table arsse_articles add foreign key(subscription) references arsse_subscriptions(id) on delete cascade on update cascade;
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alter table arsse_articles drop foreign key arsse_articles_ibfk_1;
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alter table arsse_articles drop column feed;
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-- Add feed-related columns to the subscriptions table
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alter table arsse_subscriptions add column url longtext;
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alter table arsse_subscriptions add column feed_title longtext;
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alter table arsse_subscriptions add column etag varchar(255) not null default '';
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alter table arsse_subscriptions add column last_mod datetime(0);
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alter table arsse_subscriptions add column next_fetch datetime(0);
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alter table arsse_subscriptions add column updated datetime(0);
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alter table arsse_subscriptions add column source longtext;
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alter table arsse_subscriptions add column err_count bigint unsigned not null default 0;
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alter table arsse_subscriptions add column err_msg longtext;
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alter table arsse_subscriptions add column size bigint unsigned not null default 0;
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alter table arsse_subscriptions add column icon bigint unsigned;
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-- Populate the new columns
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update arsse_subscriptions as s, arsse_feeds as f set
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s.url = f.url,
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s.feed_title = f.title,
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s.last_mod = f.modified,
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s.etag = f.etag,
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s.next_fetch = f.next_fetch,
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s.source = f.source,
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s.updated = f.updated,
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s.err_count = f.err_count,
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s.err_msg = f.err_msg,
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s.size = f.size,
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s.icon = f.icon
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where s.feed = f.id;
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-- Clean up the subscriptions table: add necessary constraints on new columns which could not be satisfied before inserting information, and drop the now obsolete feed column
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alter table arsse_subscriptions modify url longtext not null;
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alter table arsse_subscriptions add foreign key(icon) references arsse_icons(id) on delete set null;
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alter table arsse_subscriptions add unique(owner,url(255));
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alter table arsse_subscriptions drop constraint arsse_subscriptions_ibfk_2;
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alter table arsse_subscriptions drop constraint owner;
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alter table arsse_subscriptions drop column feed;
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-- Delete unneeded table
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drop table arsse_articles_map;
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drop table arsse_marks;
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drop table arsse_feeds;
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-- set version marker
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update arsse_meta set value = '8' where "key" = 'schema_version';
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