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Join against events to use its room_id index

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This commit is contained in:
Erik Johnston 2019-05-30 15:26:55 +01:00
parent e2c46ed851
commit 5ac75fc9a2
1 changed files with 6 additions and 1 deletions
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7
synapse/storage/events_worker.py
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@ -618,7 +618,12 @@ class EventsWorkerStore(SQLBaseStore):
"""
See get_total_state_event_counts.
"""
sql = "SELECT COUNT(*) FROM state_events WHERE room_id=?"
# We join against the events table as that has an index on room_id
sql = """
SELECT COUNT(*) FROM state_events
INNER JOIN events USING (room_id, event_id)
WHERE room_id=?
"""
txn.execute(sql, (room_id,))
row = txn.fetchone()
return row[0] if row else 0