Method typeChangingSides

src/Processors/QueryPlan/JoinStepLogical.cpp:202–218

}

std::unordered_set<JoinTableSide> JoinStepLogical::typeChangingSides() const
{
    std::unordered_set<JoinTableSide> result;
    for (const auto * node_after_join : actions_after_join)
    {
        if (node_after_join->type == ActionsDAG::ActionType::INPUT ||
            node_after_join->type == ActionsDAG::ActionType::COLUMN)
            continue;
        if (JoinActionRef(node_after_join, expression_actions).fromLeft())
            result.insert(JoinTableSide::Left);
        if (JoinActionRef(node_after_join, expression_actions).fromRight())
            result.insert(JoinTableSide::Right);
        if (result.size() == 2)
            break;
    }
    return result;
}

JoinStepLogical::~JoinStepLogical() = default;