Function convertToHeader

src/Storages/StorageWithCommonVirtualColumns.cpp:31–42

}

void convertToHeader(QueryPlan & query_plan, const Block & header, ContextPtr context)
{
    auto converting_dag = ActionsDAG::makeConvertingActions(
        query_plan.getCurrentHeader()->getColumnsWithTypeAndName(),
        header.getColumnsWithTypeAndName(),
        ActionsDAG::MatchColumnsMode::Name,
        context);

    auto converting = std::make_unique<ExpressionStep>(query_plan.getCurrentHeader(), std::move(converting_dag));
    converting->setStepDescription("Reorder columns to match requested columns sequence");
    query_plan.addStep(std::move(converting));
}

}