Index: SQL/postgres.initial.sql
===================================================================
--- SQL/postgres.initial.sql	(revision ac26b964663405521077c7710212a58c37a041c7)
+++ SQL/postgres.initial.sql	(revision edc63c2e3845c1a7ec21898bb0636daddd124a27)
@@ -132,5 +132,5 @@
 );
 
-ALTER TABLE "cache" ADD INDEX (user_id, cache_key);
+CREATE INDEX cache_user_id_idx ON "cache" (user_id, cache_key);
 
 --