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This commit is contained in:
Nickita Taranov 2022-03-25 17:43:51 +01:00
parent b095838444
commit a08c035443
1 changed files with 2 additions and 8 deletions
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10
src/Processors/QueryPlan/Optimizations/liftUpFunctions.cpp
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@ -23,7 +23,7 @@ void swapSortingAndUnnecessaryCalculation(QueryPlan::Node * parent_node, Actions
sorting_step->updateInputStream(child_node->children.at(0)->step->getOutputStream());
auto input_header = child_step->getInputStreams().at(0).header;
sorting_step->updateOutputStream(input_header);
sorting_step->updateOutputStream(std::move(input_header));
parent_step = std::make_unique<ExpressionStep>(child_step->getOutputStream(), std::move(actions));
}
@ -45,12 +45,7 @@ size_t tryExecuteFunctionsAfterSorting(QueryPlan::Node * parent_node, QueryPlan:
NameSet sort_columns;
for (const auto & col : sorting_step->getSortDescription())
sort_columns.insert(col.column_name);
const auto & expression = expression_step->getExpression();
for (auto sc : sort_columns)
LOG_TRACE(&Poco::Logger::get("Optimizer"), "sort_columns: {}", fmt::join(sort_columns, ", "));
auto split_actions = expression->splitActionsBySortingDescription(sort_columns);
LOG_TRACE(&Poco::Logger::get("Optimizer"), "source: {}", expression->dumpDAG());
LOG_TRACE(&Poco::Logger::get("Optimizer"), "first: {}", split_actions.first->dumpDAG());
@ -69,11 +64,10 @@ size_t tryExecuteFunctionsAfterSorting(QueryPlan::Node * parent_node, QueryPlan:
// Sorting -> Expression
auto & node = nodes.emplace_back();
node.children.swap(child_node->children);
child_node->children.emplace_back(&node);
node.step = std::make_unique<ExpressionStep>(node.children.at(0)->step->getOutputStream(), std::move(split_actions.first));
// Sorting (parent_node) -> UnnecessaryCalculations (child_node) -> NecessaryCalculations (node)
swapSortingAndUnnecessaryCalculation(parent_node, std::move(split_actions.second));
// UnnecessaryCalculations (child_node) -> Sorting (parent_node) -> NecessaryCalculations (node)