#include #include template <> void add_param(Query&, const Id&) {} void actual_add_param(Query& query, const std::string& val) { query.params.push_back(val); } void actual_add_param(Query& query, const OptionalBool& val) { if (!val.is_set) query.params.push_back("0"); else if (val.value) query.params.push_back("1"); else query.params.push_back("-1"); }