Method subquery

src/Interpreters/SelectQueryOptions.h:93–100

    SelectQueryOptions copy() const { return *this; }

    SelectQueryOptions subquery() const
    {
        SelectQueryOptions out = *this;
        out.to_stage = QueryProcessingStage::Complete;
        ++out.subquery_depth;
        out.is_subquery = true;
        return out;
    }

    SelectQueryOptions & createView(bool value = true)
    {