Add elo rot script.

diff --git a/scripts/update_elos.sql b/scripts/update_elos.sql
new file mode 100644 (file)
index 0000000..1665dd2
--- /dev/null
+++ b/scripts/update_elos.sql
@@ -0,0 +1,5 @@
+begin;
+  update player_elos
+  set elo=least(elo-1, 100.00)
+  where update_dt < (current_timestamp at time zone 'UTC' - interval '30 days');
+end;