Synax highlighting

SQL-for-analyzing-Synapse-PostgreSQL-database-stats.md

@@ -8,7 +8,7 @@ pg_size_pretty
 (1 row)
 ```
 ## Show top 20 larger rooms by state events count
-```
+```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)
@@ -17,7 +17,7 @@ SELECT r.name, s.room_id, s.current_state_events
 ```
 
 and by state_group_events count:
-```
+```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        
@@ -25,7 +25,7 @@ ORDER BY count(s.room_id) DESC
 LIMIT 20;
 ```
 plus same, but with join removed for performance reasons:
-```
+```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
@@ -33,7 +33,7 @@ LIMIT 20;
 ```
 
 ## Show top 20 larger tables by row count
-```
+```sql
 SELECT relname, n_live_tup as rows
   FROM pg_stat_user_tables 
   ORDER BY n_live_tup DESC
@@ -65,14 +65,14 @@ user_directory_search - 316433
 ```
 
 ## Show top 20 rooms by new events count in last 1 day:
-```
+```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 >= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000 GROUP BY e.room_id, r.name ORDER BY cnt DESC LIMIT 20;
 ```
 
 ## Show top 20 users on homeserver by sent events (messages) at last month:
-```
+```sql
 SELECT user_id, SUM(total_events) 
    FROM user_stats_historical
    WHERE TO_TIMESTAMP(end_ts/1000) AT TIME ZONE 'UTC' > date_trunc('day', now() - interval '1 month')
@@ -82,7 +82,7 @@ SELECT user_id, SUM(total_events)
 ```
 
 ## Show last 100 messages from needed user, with room names:
-```
+```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)
@@ -93,7 +93,7 @@ SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json FROM events e
 ```
 
 ## Show top 20 larger tables by storage size
-```
+```sql
 SELECT nspname || '.' || relname AS "relation",
     pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"
   FROM pg_class C