add some generated columns

schema.sql

@@ -672,4 +672,19 @@ $$
 CREATE TRIGGER update_map_stats_on_log
     AFTER INSERT OR UPDATE ON logs_raw
     FOR EACH ROW
-EXECUTE PROCEDURE update_map_stats();
+EXECUTE PROCEDURE update_map_stats();
+
+CREATE TABLE vanity_urls (
+    steam_id     TEXT                        NOT NULL,
+    url          TEXT                        NOT NULL,
+    time         TIMESTAMP WITHOUT TIME ZONE NOT NULL
+);
+
+ALTER TABLE ONLY vanity_urls
+    ALTER COLUMN url SET DEFAULT now();
+
+CREATE UNIQUE INDEX vanity_urls_steam_id_idx
+    ON vanity_urls USING BTREE (steam_id);
+
+CREATE UNIQUE INDEX vanity_urls_url_idx
+    ON vanity_urls USING BTREE (time);