#pragma once namespace DB { class Context; /// Load tables from system database. Only real tables like query_log, part_log. /// You should first load system database, then attach system tables that you need into it, then load other databases. void loadMetadataSystem(Context & context); /// Load tables from databases and add them to context. Database 'system' is ignored. Use separate function to load system tables. void loadMetadata(Context & context); }