こんな感じでDB再起動の時に一度migrationをかける

Makefile

@@ -10,4 +10,5 @@ log_rotate/mysql:
 	cd /home/isucon; mysqladmin flush-logs
 
 restart/mysql:
-	sudo systemctl restart mysql
+	sudo systemctl restart mysql
+	/home/isucon/webapp/sql/format.sh

sql/admin/20_migration.sql

@@ -0,0 +1,2 @@
+create index player_id_idx on visit_history(player_id);
+create index tenant_id_competition_id_idx on visit_history(tenant_id,competition_id);

sql/format.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -ex
+cd `dirname $0`
+
+ISUCON_DB_HOST=${ISUCON_DB_HOST:-127.0.0.1}
+ISUCON_DB_PORT=${ISUCON_DB_PORT:-3306}
+ISUCON_DB_USER=${ISUCON_DB_USER:-isucon}
+ISUCON_DB_PASSWORD=${ISUCON_DB_PASSWORD:-isucon}
+ISUCON_DB_NAME=${ISUCON_DB_NAME:-isuports}
+
+# MySQLを初期化
+for f in admin/10_schema.sql admin/90_data.sql init.sql admin/20_migration;do
+mysql -u"$ISUCON_DB_USER" \
+		-p"$ISUCON_DB_PASSWORD" \
+		--host "$ISUCON_DB_HOST" \
+		--port "$ISUCON_DB_PORT" \
+		"$ISUCON_DB_NAME" < $f
+done
+
+# SQLiteのデータベースを初期化
+rm -f ../tenant_db/*.db
+cp -r ../../initial_data/*.db ../tenant_db/