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192 lines
12 KiB
SQL
192 lines
12 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 temp table arsse_articles_map(
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article int not null,
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subscription int not null,
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id integer primary key autoincrement
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);
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replace into temp.sqlite_sequence(name,seq) select 'arsse_articles_map', max(id) from arsse_articles;
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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 count > 1
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);
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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 count = 1
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);
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-- Create a new articles table which combines the marks table but does not include content
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create table arsse_articles_new(
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-- metadata for entries in newsfeeds, including user state
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id integer primary key, -- sequence number
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subscription integer not null references arsse_subscriptions(id) on delete cascade on update cascade, -- associated subscription
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read int not null default 0, -- whether the article has been read
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starred int not null default 0, -- whether the article is starred
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hidden int not null default 0, -- whether the article should be excluded from selection by default
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published text, -- time of original publication
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edited text, -- time of last edit by author
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modified text not null default CURRENT_TIMESTAMP, -- time when article was last modified in database pursuant to an authorial edit
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marked text, -- time at which an article was last modified by the user
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url text, -- URL of article
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title text collate nocase, -- article title
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author text collate nocase, -- author's name
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guid text, -- a nominally globally unique identifier for the article, from the feed
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url_title_hash text not null, -- hash of URL + title; used when checking for updates and for identification if there is no guid
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url_content_hash text not null, -- hash of URL + content + enclosure URL + enclosure content type; used when checking for updates and for identification if there is no guid
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title_content_hash text not null, -- hash of title + content + enclosure URL + enclosure content type; used when checking for updates and for identification if there is no guid
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note text not null default '' -- Tiny Tiny RSS freeform user note
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);
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insert into arsse_articles_new
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select
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i.id,
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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;
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-- Create a new table to hold article content
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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 integer primary key references arsse_articles(id) on delete cascade on update cascade, -- reference to the article ID
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content text -- the contents
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);
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insert into arsse_article_contents
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select
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m.id,
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coalesce(a.content_scraped, a.content)
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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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-- Create one edition for each renumbered article, and delete any editions for obsolete articles
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insert into arsse_editions(article) select id from arsse_articles_map where id <> article;
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delete from arsse_editions where article in (select article from arsse_articles_map where id <> article);
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-- Create enclures for renumbered articles and delete obsolete enclosures
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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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delete from arsse_enclosures where article in (select article from arsse_articles_map where id <> article);
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-- Create categories for renumbered articles and delete obsolete categories
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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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delete from arsse_categories where article in (select article from arsse_articles_map where id <> article);
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-- Create a new label-associations table which omits the subscription column and populate it with new data
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create table arsse_label_members_new(
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-- label assignments for articles
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label integer not null references arsse_labels(id) on delete cascade, -- label ID associated to an article; label IDs belong to a user
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article integer not null references arsse_articles(id) on delete cascade, -- article associated to a label
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assigned int not null default 1, -- whether the association is current, to support soft deletion
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modified text not null default CURRENT_TIMESTAMP, -- time at which the association was last made or unmade
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primary key(label,article) -- only one association of a given label to a given article
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) without rowid;
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insert into arsse_label_members_new
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select
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label, m.id, 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);
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-- Create a new subscriptions table which combines the feeds table
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create table arsse_subscriptions_new(
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-- users' subscriptions to newsfeeds, with settings
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id integer primary key, -- sequence number
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owner text not null references arsse_users(id) on delete cascade on update cascade, -- owner of subscription
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url text not null, -- URL of feed
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feed_title text collate nocase, -- feed title
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title text collate nocase, -- user-supplied title, which overrides the feed title when set
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folder integer references arsse_folders(id) on delete cascade, -- TT-RSS category (nestable); the first-level category (which acts as Nextcloud folder) is joined in when needed
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last_mod text, -- time at which the feed last actually changed at the foreign host
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etag text not null default '', -- HTTP ETag hash used for cache validation, changes each time the content changes
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next_fetch text, -- time at which the feed should next be fetched
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added text not null default CURRENT_TIMESTAMP, -- time at which feed was added
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source text, -- URL of site to which the feed belongs
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updated text, -- time at which the feed was last fetched
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err_count integer not null default 0, -- count of successive times update resulted in error since last successful update
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err_msg text, -- last error message
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size integer not null default 0, -- number of articles in the feed at last fetch
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icon integer references arsse_icons(id) on delete set null, -- numeric identifier of any associated icon
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modified text not null default CURRENT_TIMESTAMP, -- time at which subscription properties were last modified by the user
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order_type int not null default 0, -- Nextcloud sort order
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pinned int not null default 0, -- whether feed is pinned (always sorts at top)
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scrape int not null default 0, -- whether the user has requested scraping content from source articles
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keep_rule text, -- Regular expression the subscription's articles must match to avoid being hidden
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block_rule text, -- Regular expression the subscription's articles must not match to avoid being hidden
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unique(owner,url) -- a URL with particular credentials should only appear once
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);
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insert into arsse_subscriptions_new
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select
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s.id,
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s.owner,
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f.url,
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f.title,
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s.title,
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s.folder,
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f.modified,
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f.etag,
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f.next_fetch,
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s.added,
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f.source,
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f.updated,
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f.err_count,
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f.err_msg,
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f.size,
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f.icon,
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s.modified,
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s.order_type,
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s.pinned,
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s.scrape,
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s.keep_rule,
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s.block_rule
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from arsse_subscriptions as s left join arsse_feeds as f on s.feed = f.id;
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-- Delete the old tables and rename the new ones
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drop table arsse_label_members;
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drop table arsse_subscriptions;
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drop table arsse_feeds;
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drop table arsse_articles;
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drop table arsse_marks;
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drop table arsse_articles_map;
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alter table arsse_subscriptions_new rename to arsse_subscriptions;
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alter table arsse_articles_new rename to arsse_articles;
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alter table arsse_label_members_new rename to arsse_label_members;
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-- set version marker
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pragma user_version = 8;
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update arsse_meta set value = '8' where "key" = 'schema_version';
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