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Don't use sub queries, it makes postgres sad

erikj/initial_sync_perf
Erik Johnston 2015-04-30 16:16:53 +01:00
parent 29400b45b9
commit 3c4c229788
1 changed files with 5 additions and 11 deletions
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16
synapse/storage/state.py
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@ -128,18 +128,12 @@ class StateStore(SQLBaseStore):
@defer.inlineCallbacks
def get_current_state(self, room_id, event_type=None, state_key=""):
del_sql = (
"SELECT event_id FROM redactions WHERE redacts = e.event_id "
"LIMIT 1"
)
sql = (
"SELECT e.*, (%(redacted)s) AS redacted FROM events as e "
"INNER JOIN current_state_events as c ON e.event_id = c.event_id "
"WHERE c.room_id = ? "
) % {
"redacted": del_sql,
}
"SELECT e.*, r.event_id FROM events as e"
" LEFT JOIN redactions as r ON r.redacts = e.event_id"
" INNER JOIN current_state_events as c ON e.event_id = c.event_id"
" WHERE c.room_id = ? "
)
if event_type and state_key is not None:
sql += " AND c.type = ? AND c.state_key = ? "