- "TRUNCATE messages" is required to remove buggy cache entries

SQL/mysql.update.sql

@@ -49,3 +49,5 @@ ALTER TABLE `users`
 
 ALTER TABLE `messages`
     ADD INDEX `index_index` (`user_id`, `cache_key`, `idx`);
+
+TRUNCATE `messages`;

SQL/postgres.update.sql

@@ -40,3 +40,4 @@ ALTER TABLE messages ALTER del TYPE smallint;
 -- Updates from version 0.3-stable
 
 CREATE INDEX messages_index_idx ON messages (user_id, cache_key, idx);
+TRUNCATE messages;

SQL/sqlite.update.sql

@@ -40,3 +40,4 @@ CREATE INDEX ix_cache_created ON cache (created);
 DROP INDEX ix_messages_user_cache_uid;
 CREATE UNIQUE INDEX ix_messages_user_cache_uid ON messages (user_id,cache_key,uid);
 CREATE INDEX ix_messages_index ON messages (user_id,cache_key,idx);
+TRUNCATE messages;