Method buildQueryPlanIfNeeded

src/Planner/Planner.cpp:1924–1940

}

void Planner::buildQueryPlanIfNeeded()
{
    if (query_plan.isInitialized())
        return;

    LOG_TRACE(
        log,
        "Query to stage {}{}",
        QueryProcessingStage::toString(select_query_options.to_stage),
        select_query_options.only_analyze ? " only analyze" : "");

    if (query_tree->getNodeType() == QueryTreeNodeType::UNION)
        buildPlanForUnionNode();
    else
        buildPlanForQueryNode();
    extendQueryContextAndStoragesLifetime(query_plan, planner_context);
}

void Planner::buildPlanForUnionNode()
{