Function createProjection

src/QueryPlan/ReadFromMergeTree.cpp:608–614

}

static ActionsDAGPtr createProjection(const Block & header)
{
    auto projection = std::make_shared<ActionsDAG>(header.getNamesAndTypesList());
    projection->removeUnusedActions(header.getNames());
    projection->projectInput();
    return projection;
}

namespace
{