Add alias to make Postgres happy

reivilibre · reivilibre · commit 93539396512d · 2021-07-15T13:57:40.000+01:00
diff --git a/synapse/storage/databases/main/metrics.py b/synapse/storage/databases/main/metrics.py
@@ -417,7 +417,7 @@ def _count_r30v2_users(txn):
                         user_id
                     HAVING
                         max(timestamp) - min(timestamp) > (CAST(? AS BIGINT) * 1000)
-                )
+                ) AS r30_users
             """
 
             txn.execute(
