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@ -15911,40 +15911,23 @@ more CPU and RAM, and make use of <a href="usage/administration/../../workers.ht
to make use of multiple CPU cores / multiple machines for your homeserver.</p> to make use of multiple CPU cores / multiple machines for your homeserver.</p>
<div style="break-before: page; page-break-before: always;"></div><h2 id="some-useful-sql-queries-for-synapse-admins"><a class="header" href="#some-useful-sql-queries-for-synapse-admins">Some useful SQL queries for Synapse Admins</a></h2> <div style="break-before: page; page-break-before: always;"></div><h2 id="some-useful-sql-queries-for-synapse-admins"><a class="header" href="#some-useful-sql-queries-for-synapse-admins">Some useful SQL queries for Synapse Admins</a></h2>
<h2 id="size-of-full-matrix-db"><a class="header" href="#size-of-full-matrix-db">Size of full matrix db</a></h2> <h2 id="size-of-full-matrix-db"><a class="header" href="#size-of-full-matrix-db">Size of full matrix db</a></h2>
<p><code>SELECT pg_size_pretty( pg_database_size( 'matrix' ) );</code></p> <pre><code class="language-sql">SELECT pg_size_pretty( pg_database_size( 'matrix' ) );
</code></pre>
<h3 id="result-example"><a class="header" href="#result-example">Result example:</a></h3> <h3 id="result-example"><a class="header" href="#result-example">Result example:</a></h3>
<pre><code>pg_size_pretty <pre><code>pg_size_pretty
---------------- ----------------
6420 MB 6420 MB
(1 row) (1 row)
</code></pre> </code></pre>
<h2 id="show-top-20-larger-rooms-by-state-events-count"><a class="header" href="#show-top-20-larger-rooms-by-state-events-count">Show top 20 larger rooms by state events count</a></h2>
<pre><code class="language-sql">SELECT r.name, s.room_id, s.current_state_events
FROM room_stats_current s
LEFT JOIN room_stats_state r USING (room_id)
ORDER BY current_state_events DESC
LIMIT 20;
</code></pre>
<p>and by state_group_events count:</p>
<pre><code class="language-sql">SELECT rss.name, s.room_id, count(s.room_id) FROM state_groups_state s
LEFT JOIN room_stats_state rss USING (room_id)
GROUP BY s.room_id, rss.name
ORDER BY count(s.room_id) DESC
LIMIT 20;
</code></pre>
<p>plus same, but with join removed for performance reasons:</p>
<pre><code class="language-sql">SELECT s.room_id, count(s.room_id) FROM state_groups_state s
GROUP BY s.room_id
ORDER BY count(s.room_id) DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-larger-tables-by-row-count"><a class="header" href="#show-top-20-larger-tables-by-row-count">Show top 20 larger tables by row count</a></h2> <h2 id="show-top-20-larger-tables-by-row-count"><a class="header" href="#show-top-20-larger-tables-by-row-count">Show top 20 larger tables by row count</a></h2>
<pre><code class="language-sql">SELECT relname, n_live_tup as rows <pre><code class="language-sql">SELECT relname, n_live_tup AS &quot;rows&quot;
FROM pg_stat_user_tables FROM pg_stat_user_tables
ORDER BY n_live_tup DESC ORDER BY n_live_tup DESC
LIMIT 20; LIMIT 20;
</code></pre> </code></pre>
<p>This query is quick, but may be very approximate, for exact number of rows use <code>SELECT COUNT(*) FROM &lt;table_name&gt;</code>.</p> <p>This query is quick, but may be very approximate, for exact number of rows use:</p>
<pre><code class="language-sql">SELECT COUNT(*) FROM &lt;table_name&gt;;
</code></pre>
<h3 id="result-example-1"><a class="header" href="#result-example-1">Result example:</a></h3> <h3 id="result-example-1"><a class="header" href="#result-example-1">Result example:</a></h3>
<pre><code>state_groups_state - 161687170 <pre><code>state_groups_state - 161687170
event_auth - 8584785 event_auth - 8584785
@ -15967,37 +15950,15 @@ users_in_public_rooms - 364059
device_lists_stream - 326903 device_lists_stream - 326903
user_directory_search - 316433 user_directory_search - 316433
</code></pre> </code></pre>
<h2 id="show-top-20-rooms-by-new-events-count-in-last-1-day"><a class="header" href="#show-top-20-rooms-by-new-events-count-in-last-1-day">Show top 20 rooms by new events count in last 1 day:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, COUNT(e.event_id) cnt FROM events e
LEFT JOIN room_stats_state r USING (room_id)
WHERE e.origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000 GROUP BY e.room_id, r.name ORDER BY cnt DESC LIMIT 20;
</code></pre>
<h2 id="show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month"><a class="header" href="#show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month">Show top 20 users on homeserver by sent events (messages) at last month:</a></h2>
<pre><code class="language-sql">SELECT user_id, SUM(total_events)
FROM user_stats_historical
WHERE TO_TIMESTAMP(end_ts/1000) AT TIME ZONE 'UTC' &gt; date_trunc('day', now() - interval '1 month')
GROUP BY user_id
ORDER BY SUM(total_events) DESC
LIMIT 20;
</code></pre>
<h2 id="show-last-100-messages-from-needed-user-with-room-names"><a class="header" href="#show-last-100-messages-from-needed-user-with-room-names">Show last 100 messages from needed user, with room names:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json FROM events e
LEFT JOIN event_json j USING (room_id)
LEFT JOIN room_stats_state r USING (room_id)
WHERE sender = '@LOGIN:example.com'
AND e.type = 'm.room.message'
ORDER BY stream_ordering DESC
LIMIT 100;
</code></pre>
<h2 id="show-top-20-larger-tables-by-storage-size"><a class="header" href="#show-top-20-larger-tables-by-storage-size">Show top 20 larger tables by storage size</a></h2> <h2 id="show-top-20-larger-tables-by-storage-size"><a class="header" href="#show-top-20-larger-tables-by-storage-size">Show top 20 larger tables by storage size</a></h2>
<pre><code class="language-sql">SELECT nspname || '.' || relname AS &quot;relation&quot;, <pre><code class="language-sql">SELECT nspname || '.' || relname AS &quot;relation&quot;,
pg_size_pretty(pg_total_relation_size(C.oid)) AS &quot;total_size&quot; pg_size_pretty(pg_total_relation_size(c.oid)) AS &quot;total_size&quot;
FROM pg_class C FROM pg_class c
LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) LEFT JOIN pg_namespace n ON (n.oid = c.relnamespace)
WHERE nspname NOT IN ('pg_catalog', 'information_schema') WHERE nspname NOT IN ('pg_catalog', 'information_schema')
AND C.relkind &lt;&gt; 'i' AND c.relkind &lt;&gt; 'i'
AND nspname !~ '^pg_toast' AND nspname !~ '^pg_toast'
ORDER BY pg_total_relation_size(C.oid) DESC ORDER BY pg_total_relation_size(c.oid) DESC
LIMIT 20; LIMIT 20;
</code></pre> </code></pre>
<h3 id="result-example-2"><a class="header" href="#result-example-2">Result example:</a></h3> <h3 id="result-example-2"><a class="header" href="#result-example-2">Result example:</a></h3>
@ -16022,8 +15983,75 @@ public.state_groups - 160 MB
public.device_lists_remote_cache - 124 MB public.device_lists_remote_cache - 124 MB
public.state_group_edges - 122 MB public.state_group_edges - 122 MB
</code></pre> </code></pre>
<h2 id="show-top-20-larger-rooms-by-state-events-count"><a class="header" href="#show-top-20-larger-rooms-by-state-events-count">Show top 20 larger rooms by state events count</a></h2>
<p>You get the same information when you use the
<a href="usage/administration/../../admin_api/rooms.html#list-room-api">admin API</a>
and set parameter <code>order_by=state_events</code>.</p>
<pre><code class="language-sql">SELECT r.name, s.room_id, s.current_state_events
FROM room_stats_current s
LEFT JOIN room_stats_state r USING (room_id)
ORDER BY current_state_events DESC
LIMIT 20;
</code></pre>
<p>and by state_group_events count:</p>
<pre><code class="language-sql">SELECT rss.name, s.room_id, COUNT(s.room_id)
FROM state_groups_state s
LEFT JOIN room_stats_state rss USING (room_id)
GROUP BY s.room_id, rss.name
ORDER BY COUNT(s.room_id) DESC
LIMIT 20;
</code></pre>
<p>plus same, but with join removed for performance reasons:</p>
<pre><code class="language-sql">SELECT s.room_id, COUNT(s.room_id)
FROM state_groups_state s
GROUP BY s.room_id
ORDER BY COUNT(s.room_id) DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-rooms-by-new-events-count-in-last-1-day"><a class="header" href="#show-top-20-rooms-by-new-events-count-in-last-1-day">Show top 20 rooms by new events count in last 1 day:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, COUNT(e.event_id) cnt
FROM events e
LEFT JOIN room_stats_state r USING (room_id)
WHERE e.origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000
GROUP BY e.room_id, r.name
ORDER BY cnt DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month"><a class="header" href="#show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month">Show top 20 users on homeserver by sent events (messages) at last month:</a></h2>
<p>Caution. This query does not use any indexes, can be slow and create load on the database.</p>
<pre><code class="language-sql">SELECT COUNT(*), sender
FROM events
WHERE (type = 'm.room.encrypted' OR type = 'm.room.message')
AND origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 month') * 1000
GROUP BY sender
ORDER BY COUNT(*) DESC
LIMIT 20;
</code></pre>
<h2 id="show-last-100-messages-from-needed-user-with-room-names"><a class="header" href="#show-last-100-messages-from-needed-user-with-room-names">Show last 100 messages from needed user, with room names:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json
FROM events e
LEFT JOIN event_json j USING (room_id)
LEFT JOIN room_stats_state r USING (room_id)
WHERE sender = '@LOGIN:example.com'
AND e.type = 'm.room.message'
ORDER BY stream_ordering DESC
LIMIT 100;
</code></pre>
<h2 id="show-rooms-with-names-sorted-by-events-in-this-rooms"><a class="header" href="#show-rooms-with-names-sorted-by-events-in-this-rooms">Show rooms with names, sorted by events in this rooms</a></h2> <h2 id="show-rooms-with-names-sorted-by-events-in-this-rooms"><a class="header" href="#show-rooms-with-names-sorted-by-events-in-this-rooms">Show rooms with names, sorted by events in this rooms</a></h2>
<p><code>echo &quot;select event_json.room_id,room_stats_state.name from event_json,room_stats_state where room_stats_state.room_id=event_json.room_id&quot; | psql synapse | sort | uniq -c | sort -n</code></p> <p><strong>Sort and order with bash</strong></p>
<pre><code class="language-bash">echo &quot;SELECT event_json.room_id, room_stats_state.name FROM event_json, room_stats_state \
WHERE room_stats_state.room_id = event_json.room_id&quot; | psql -d synapse -h localhost -U synapse_user -t \
| sort | uniq -c | sort -n
</code></pre>
<p>Documentation for <code>psql</code> command line parameters: https://www.postgresql.org/docs/current/app-psql.html</p>
<p><strong>Sort and order with SQL</strong></p>
<pre><code class="language-sql">SELECT COUNT(*), event_json.room_id, room_stats_state.name
FROM event_json, room_stats_state
WHERE room_stats_state.room_id = event_json.room_id
GROUP BY event_json.room_id, room_stats_state.name
ORDER BY COUNT(*) DESC
LIMIT 50;
</code></pre>
<h3 id="result-example-3"><a class="header" href="#result-example-3">Result example:</a></h3> <h3 id="result-example-3"><a class="header" href="#result-example-3">Result example:</a></h3>
<pre><code> 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix <pre><code> 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix
9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix (TWIM) 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix (TWIM)
@ -16035,13 +16063,21 @@ public.state_group_edges - 122 MB
43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot Web/Desktop 43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot Web/Desktop
</code></pre> </code></pre>
<h2 id="lookup-room-state-info-by-list-of-room_id"><a class="header" href="#lookup-room-state-info-by-list-of-room_id">Lookup room state info by list of room_id</a></h2> <h2 id="lookup-room-state-info-by-list-of-room_id"><a class="header" href="#lookup-room-state-info-by-list-of-room_id">Lookup room state info by list of room_id</a></h2>
<pre><code class="language-sql">SELECT rss.room_id, rss.name, rss.canonical_alias, rss.topic, rss.encryption, rsc.joined_members, rsc.local_users_in_room, rss.join_rules <p>You get the same information when you use the
<a href="usage/administration/../../admin_api/rooms.html#room-details-api">admin API</a>.</p>
<pre><code class="language-sql">SELECT rss.room_id, rss.name, rss.canonical_alias, rss.topic, rss.encryption,
rsc.joined_members, rsc.local_users_in_room, rss.join_rules
FROM room_stats_state rss FROM room_stats_state rss
LEFT JOIN room_stats_current rsc USING (room_id) LEFT JOIN room_stats_current rsc USING (room_id)
WHERE room_id IN ( WHERE room_id IN ( WHERE room_id IN ( WHERE room_id IN (
'!OGEhHVWSdvArJzumhm:matrix.org', '!OGEhHVWSdvArJzumhm:matrix.org',
'!YTvKGNlinIzlkMTVRl:matrix.org' '!YTvKGNlinIzlkMTVRl:matrix.org'
) );
</code></pre>
<h2 id="show-users-and-devices-that-have-not-been-online-for-a-while"><a class="header" href="#show-users-and-devices-that-have-not-been-online-for-a-while">Show users and devices that have not been online for a while</a></h2>
<pre><code class="language-sql">SELECT user_id, device_id, user_agent, TO_TIMESTAMP(last_seen / 1000) AS &quot;last_seen&quot;
FROM devices
WHERE last_seen &lt; DATE_PART('epoch', NOW() - INTERVAL '3 month') * 1000;
</code></pre> </code></pre>
<div style="break-before: page; page-break-before: always;"></div><p>This blog post by Victor Berger explains how to use many of the tools listed on this page: https://levans.fr/shrink-synapse-database.html</p> <div style="break-before: page; page-break-before: always;"></div><p>This blog post by Victor Berger explains how to use many of the tools listed on this page: https://levans.fr/shrink-synapse-database.html</p>
<h1 id="list-of-useful-tools-and-scripts-for-maintenance-synapse-database"><a class="header" href="#list-of-useful-tools-and-scripts-for-maintenance-synapse-database">List of useful tools and scripts for maintenance Synapse database:</a></h1> <h1 id="list-of-useful-tools-and-scripts-for-maintenance-synapse-database"><a class="header" href="#list-of-useful-tools-and-scripts-for-maintenance-synapse-database">List of useful tools and scripts for maintenance Synapse database:</a></h1>

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@ -148,40 +148,23 @@
<h2 id="some-useful-sql-queries-for-synapse-admins"><a class="header" href="#some-useful-sql-queries-for-synapse-admins">Some useful SQL queries for Synapse Admins</a></h2> <h2 id="some-useful-sql-queries-for-synapse-admins"><a class="header" href="#some-useful-sql-queries-for-synapse-admins">Some useful SQL queries for Synapse Admins</a></h2>
<h2 id="size-of-full-matrix-db"><a class="header" href="#size-of-full-matrix-db">Size of full matrix db</a></h2> <h2 id="size-of-full-matrix-db"><a class="header" href="#size-of-full-matrix-db">Size of full matrix db</a></h2>
<p><code>SELECT pg_size_pretty( pg_database_size( 'matrix' ) );</code></p> <pre><code class="language-sql">SELECT pg_size_pretty( pg_database_size( 'matrix' ) );
</code></pre>
<h3 id="result-example"><a class="header" href="#result-example">Result example:</a></h3> <h3 id="result-example"><a class="header" href="#result-example">Result example:</a></h3>
<pre><code>pg_size_pretty <pre><code>pg_size_pretty
---------------- ----------------
6420 MB 6420 MB
(1 row) (1 row)
</code></pre> </code></pre>
<h2 id="show-top-20-larger-rooms-by-state-events-count"><a class="header" href="#show-top-20-larger-rooms-by-state-events-count">Show top 20 larger rooms by state events count</a></h2>
<pre><code class="language-sql">SELECT r.name, s.room_id, s.current_state_events
FROM room_stats_current s
LEFT JOIN room_stats_state r USING (room_id)
ORDER BY current_state_events DESC
LIMIT 20;
</code></pre>
<p>and by state_group_events count:</p>
<pre><code class="language-sql">SELECT rss.name, s.room_id, count(s.room_id) FROM state_groups_state s
LEFT JOIN room_stats_state rss USING (room_id)
GROUP BY s.room_id, rss.name
ORDER BY count(s.room_id) DESC
LIMIT 20;
</code></pre>
<p>plus same, but with join removed for performance reasons:</p>
<pre><code class="language-sql">SELECT s.room_id, count(s.room_id) FROM state_groups_state s
GROUP BY s.room_id
ORDER BY count(s.room_id) DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-larger-tables-by-row-count"><a class="header" href="#show-top-20-larger-tables-by-row-count">Show top 20 larger tables by row count</a></h2> <h2 id="show-top-20-larger-tables-by-row-count"><a class="header" href="#show-top-20-larger-tables-by-row-count">Show top 20 larger tables by row count</a></h2>
<pre><code class="language-sql">SELECT relname, n_live_tup as rows <pre><code class="language-sql">SELECT relname, n_live_tup AS &quot;rows&quot;
FROM pg_stat_user_tables FROM pg_stat_user_tables
ORDER BY n_live_tup DESC ORDER BY n_live_tup DESC
LIMIT 20; LIMIT 20;
</code></pre> </code></pre>
<p>This query is quick, but may be very approximate, for exact number of rows use <code>SELECT COUNT(*) FROM &lt;table_name&gt;</code>.</p> <p>This query is quick, but may be very approximate, for exact number of rows use:</p>
<pre><code class="language-sql">SELECT COUNT(*) FROM &lt;table_name&gt;;
</code></pre>
<h3 id="result-example-1"><a class="header" href="#result-example-1">Result example:</a></h3> <h3 id="result-example-1"><a class="header" href="#result-example-1">Result example:</a></h3>
<pre><code>state_groups_state - 161687170 <pre><code>state_groups_state - 161687170
event_auth - 8584785 event_auth - 8584785
@ -204,37 +187,15 @@ users_in_public_rooms - 364059
device_lists_stream - 326903 device_lists_stream - 326903
user_directory_search - 316433 user_directory_search - 316433
</code></pre> </code></pre>
<h2 id="show-top-20-rooms-by-new-events-count-in-last-1-day"><a class="header" href="#show-top-20-rooms-by-new-events-count-in-last-1-day">Show top 20 rooms by new events count in last 1 day:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, COUNT(e.event_id) cnt FROM events e
LEFT JOIN room_stats_state r USING (room_id)
WHERE e.origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000 GROUP BY e.room_id, r.name ORDER BY cnt DESC LIMIT 20;
</code></pre>
<h2 id="show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month"><a class="header" href="#show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month">Show top 20 users on homeserver by sent events (messages) at last month:</a></h2>
<pre><code class="language-sql">SELECT user_id, SUM(total_events)
FROM user_stats_historical
WHERE TO_TIMESTAMP(end_ts/1000) AT TIME ZONE 'UTC' &gt; date_trunc('day', now() - interval '1 month')
GROUP BY user_id
ORDER BY SUM(total_events) DESC
LIMIT 20;
</code></pre>
<h2 id="show-last-100-messages-from-needed-user-with-room-names"><a class="header" href="#show-last-100-messages-from-needed-user-with-room-names">Show last 100 messages from needed user, with room names:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json FROM events e
LEFT JOIN event_json j USING (room_id)
LEFT JOIN room_stats_state r USING (room_id)
WHERE sender = '@LOGIN:example.com'
AND e.type = 'm.room.message'
ORDER BY stream_ordering DESC
LIMIT 100;
</code></pre>
<h2 id="show-top-20-larger-tables-by-storage-size"><a class="header" href="#show-top-20-larger-tables-by-storage-size">Show top 20 larger tables by storage size</a></h2> <h2 id="show-top-20-larger-tables-by-storage-size"><a class="header" href="#show-top-20-larger-tables-by-storage-size">Show top 20 larger tables by storage size</a></h2>
<pre><code class="language-sql">SELECT nspname || '.' || relname AS &quot;relation&quot;, <pre><code class="language-sql">SELECT nspname || '.' || relname AS &quot;relation&quot;,
pg_size_pretty(pg_total_relation_size(C.oid)) AS &quot;total_size&quot; pg_size_pretty(pg_total_relation_size(c.oid)) AS &quot;total_size&quot;
FROM pg_class C FROM pg_class c
LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) LEFT JOIN pg_namespace n ON (n.oid = c.relnamespace)
WHERE nspname NOT IN ('pg_catalog', 'information_schema') WHERE nspname NOT IN ('pg_catalog', 'information_schema')
AND C.relkind &lt;&gt; 'i' AND c.relkind &lt;&gt; 'i'
AND nspname !~ '^pg_toast' AND nspname !~ '^pg_toast'
ORDER BY pg_total_relation_size(C.oid) DESC ORDER BY pg_total_relation_size(c.oid) DESC
LIMIT 20; LIMIT 20;
</code></pre> </code></pre>
<h3 id="result-example-2"><a class="header" href="#result-example-2">Result example:</a></h3> <h3 id="result-example-2"><a class="header" href="#result-example-2">Result example:</a></h3>
@ -259,8 +220,75 @@ public.state_groups - 160 MB
public.device_lists_remote_cache - 124 MB public.device_lists_remote_cache - 124 MB
public.state_group_edges - 122 MB public.state_group_edges - 122 MB
</code></pre> </code></pre>
<h2 id="show-top-20-larger-rooms-by-state-events-count"><a class="header" href="#show-top-20-larger-rooms-by-state-events-count">Show top 20 larger rooms by state events count</a></h2>
<p>You get the same information when you use the
<a href="../../admin_api/rooms.html#list-room-api">admin API</a>
and set parameter <code>order_by=state_events</code>.</p>
<pre><code class="language-sql">SELECT r.name, s.room_id, s.current_state_events
FROM room_stats_current s
LEFT JOIN room_stats_state r USING (room_id)
ORDER BY current_state_events DESC
LIMIT 20;
</code></pre>
<p>and by state_group_events count:</p>
<pre><code class="language-sql">SELECT rss.name, s.room_id, COUNT(s.room_id)
FROM state_groups_state s
LEFT JOIN room_stats_state rss USING (room_id)
GROUP BY s.room_id, rss.name
ORDER BY COUNT(s.room_id) DESC
LIMIT 20;
</code></pre>
<p>plus same, but with join removed for performance reasons:</p>
<pre><code class="language-sql">SELECT s.room_id, COUNT(s.room_id)
FROM state_groups_state s
GROUP BY s.room_id
ORDER BY COUNT(s.room_id) DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-rooms-by-new-events-count-in-last-1-day"><a class="header" href="#show-top-20-rooms-by-new-events-count-in-last-1-day">Show top 20 rooms by new events count in last 1 day:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, COUNT(e.event_id) cnt
FROM events e
LEFT JOIN room_stats_state r USING (room_id)
WHERE e.origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000
GROUP BY e.room_id, r.name
ORDER BY cnt DESC
LIMIT 20;
</code></pre>
<h2 id="show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month"><a class="header" href="#show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month">Show top 20 users on homeserver by sent events (messages) at last month:</a></h2>
<p>Caution. This query does not use any indexes, can be slow and create load on the database.</p>
<pre><code class="language-sql">SELECT COUNT(*), sender
FROM events
WHERE (type = 'm.room.encrypted' OR type = 'm.room.message')
AND origin_server_ts &gt;= DATE_PART('epoch', NOW() - INTERVAL '1 month') * 1000
GROUP BY sender
ORDER BY COUNT(*) DESC
LIMIT 20;
</code></pre>
<h2 id="show-last-100-messages-from-needed-user-with-room-names"><a class="header" href="#show-last-100-messages-from-needed-user-with-room-names">Show last 100 messages from needed user, with room names:</a></h2>
<pre><code class="language-sql">SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json
FROM events e
LEFT JOIN event_json j USING (room_id)
LEFT JOIN room_stats_state r USING (room_id)
WHERE sender = '@LOGIN:example.com'
AND e.type = 'm.room.message'
ORDER BY stream_ordering DESC
LIMIT 100;
</code></pre>
<h2 id="show-rooms-with-names-sorted-by-events-in-this-rooms"><a class="header" href="#show-rooms-with-names-sorted-by-events-in-this-rooms">Show rooms with names, sorted by events in this rooms</a></h2> <h2 id="show-rooms-with-names-sorted-by-events-in-this-rooms"><a class="header" href="#show-rooms-with-names-sorted-by-events-in-this-rooms">Show rooms with names, sorted by events in this rooms</a></h2>
<p><code>echo &quot;select event_json.room_id,room_stats_state.name from event_json,room_stats_state where room_stats_state.room_id=event_json.room_id&quot; | psql synapse | sort | uniq -c | sort -n</code></p> <p><strong>Sort and order with bash</strong></p>
<pre><code class="language-bash">echo &quot;SELECT event_json.room_id, room_stats_state.name FROM event_json, room_stats_state \
WHERE room_stats_state.room_id = event_json.room_id&quot; | psql -d synapse -h localhost -U synapse_user -t \
| sort | uniq -c | sort -n
</code></pre>
<p>Documentation for <code>psql</code> command line parameters: https://www.postgresql.org/docs/current/app-psql.html</p>
<p><strong>Sort and order with SQL</strong></p>
<pre><code class="language-sql">SELECT COUNT(*), event_json.room_id, room_stats_state.name
FROM event_json, room_stats_state
WHERE room_stats_state.room_id = event_json.room_id
GROUP BY event_json.room_id, room_stats_state.name
ORDER BY COUNT(*) DESC
LIMIT 50;
</code></pre>
<h3 id="result-example-3"><a class="header" href="#result-example-3">Result example:</a></h3> <h3 id="result-example-3"><a class="header" href="#result-example-3">Result example:</a></h3>
<pre><code> 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix <pre><code> 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix
9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix (TWIM) 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix (TWIM)
@ -272,13 +300,21 @@ public.state_group_edges - 122 MB
43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot Web/Desktop 43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot Web/Desktop
</code></pre> </code></pre>
<h2 id="lookup-room-state-info-by-list-of-room_id"><a class="header" href="#lookup-room-state-info-by-list-of-room_id">Lookup room state info by list of room_id</a></h2> <h2 id="lookup-room-state-info-by-list-of-room_id"><a class="header" href="#lookup-room-state-info-by-list-of-room_id">Lookup room state info by list of room_id</a></h2>
<pre><code class="language-sql">SELECT rss.room_id, rss.name, rss.canonical_alias, rss.topic, rss.encryption, rsc.joined_members, rsc.local_users_in_room, rss.join_rules <p>You get the same information when you use the
<a href="../../admin_api/rooms.html#room-details-api">admin API</a>.</p>
<pre><code class="language-sql">SELECT rss.room_id, rss.name, rss.canonical_alias, rss.topic, rss.encryption,
rsc.joined_members, rsc.local_users_in_room, rss.join_rules
FROM room_stats_state rss FROM room_stats_state rss
LEFT JOIN room_stats_current rsc USING (room_id) LEFT JOIN room_stats_current rsc USING (room_id)
WHERE room_id IN ( WHERE room_id IN ( WHERE room_id IN ( WHERE room_id IN (
'!OGEhHVWSdvArJzumhm:matrix.org', '!OGEhHVWSdvArJzumhm:matrix.org',
'!YTvKGNlinIzlkMTVRl:matrix.org' '!YTvKGNlinIzlkMTVRl:matrix.org'
) );
</code></pre>
<h2 id="show-users-and-devices-that-have-not-been-online-for-a-while"><a class="header" href="#show-users-and-devices-that-have-not-been-online-for-a-while">Show users and devices that have not been online for a while</a></h2>
<pre><code class="language-sql">SELECT user_id, device_id, user_agent, TO_TIMESTAMP(last_seen / 1000) AS &quot;last_seen&quot;
FROM devices
WHERE last_seen &lt; DATE_PART('epoch', NOW() - INTERVAL '3 month') * 1000;
</code></pre> </code></pre>
</main> </main>