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style fixes

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This commit is contained in:
Nikolai Kochetov 2018-04-20 22:38:34 +03:00
parent a6375d6155
commit 233ac6c599
5 changed files with 15 additions and 16 deletions
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2
dbms/src/Interpreters/ExpressionActions.cpp
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@ -1019,7 +1019,7 @@ void ExpressionActionsChain::finalize()
std::unordered_map<String, size_t> required_output_indexes;
for (size_t j = 0; j < required_output.size(); ++j)
required_output_indexes[required_output[j]] = j;
auto & can_remove_required_output = steps[i].can_remove_required_output;
auto & can_remove_required_output = steps[i].not_need_in_future_steps;
if (i + 1 < static_cast<int>(steps.size()))
{

5
dbms/src/Interpreters/ExpressionActions.h
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@ -232,7 +232,10 @@ struct ExpressionActionsChain
ExpressionActionsPtr actions;
NameSet additional_input;
Names required_output;
std::vector<std::shared_ptr<bool>> can_remove_required_output; /// Has the same size with required_output, is filled in finalize()
/// Columns which are used only for current steps and not used in next actions (and can be removed from block).
/// Example: filter column for where actions.
/// If not empty, has the same size with required_output; is filled in finalize().
std::vector<bool *> not_need_in_future_steps;
Step(const ExpressionActionsPtr & actions_ = nullptr, const Names & required_output_ = Names())
: actions(actions_), required_output(required_output_) {}

8
dbms/src/Interpreters/ExpressionAnalyzer.cpp
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@ -2429,7 +2429,7 @@ bool ExpressionAnalyzer::appendJoin(ExpressionActionsChain & chain, bool only_ty
return true;
}
bool ExpressionAnalyzer::appendPrewhere(ExpressionActionsChain & chain, bool only_types, std::shared_ptr<bool> & remove_filter)
bool ExpressionAnalyzer::appendPrewhere(ExpressionActionsChain & chain, bool only_types, bool & remove_filter)
{
assertSelect();
@ -2441,7 +2441,7 @@ bool ExpressionAnalyzer::appendPrewhere(ExpressionActionsChain & chain, bool onl
getRootActions(select_query->prewhere_expression, only_types, false, step.actions);
String prewhere_column_name = select_query->prewhere_expression->getColumnName();
step.required_output.push_back(prewhere_column_name);
step.can_remove_required_output = {remove_filter = std::make_shared<bool>(true)};
step.not_need_in_future_steps = {&remove_filter};
{
/// Remove unused source_columns from prewhere actions.
@ -2491,7 +2491,7 @@ bool ExpressionAnalyzer::appendPrewhere(ExpressionActionsChain & chain, bool onl
return true;
}
bool ExpressionAnalyzer::appendWhere(ExpressionActionsChain & chain, bool only_types, std::shared_ptr<bool> & remove_filter)
bool ExpressionAnalyzer::appendWhere(ExpressionActionsChain & chain, bool only_types, bool & remove_filter)
{
assertSelect();
@ -2502,7 +2502,7 @@ bool ExpressionAnalyzer::appendWhere(ExpressionActionsChain & chain, bool only_t
ExpressionActionsChain::Step & step = chain.steps.back();
step.required_output.push_back(select_query->where_expression->getColumnName());
step.can_remove_required_output = {remove_filter = std::make_shared<bool>(true)};
step.not_need_in_future_steps = {&remove_filter};
getRootActions(select_query->where_expression, only_types, false, step.actions);
return true;

4
dbms/src/Interpreters/ExpressionAnalyzer.h
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@ -103,8 +103,8 @@ public:
/// Before aggregation:
bool appendArrayJoin(ExpressionActionsChain & chain, bool only_types);
bool appendJoin(ExpressionActionsChain & chain, bool only_types);
bool appendPrewhere(ExpressionActionsChain & chain, bool only_types, std::shared_ptr<bool> & remove_filter);
bool appendWhere(ExpressionActionsChain & chain, bool only_types, std::shared_ptr<bool> & remove_filter);
bool appendPrewhere(ExpressionActionsChain & chain, bool only_types, bool & remove_filter);
bool appendWhere(ExpressionActionsChain & chain, bool only_types, bool & remove_filter);
bool appendGroupBy(ExpressionActionsChain & chain, bool only_types);
void appendAggregateFunctionsArguments(ExpressionActionsChain & chain, bool only_types);

12
dbms/src/Interpreters/InterpreterSelectQuery.cpp
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@ -250,13 +250,12 @@ InterpreterSelectQuery::AnalysisResult InterpreterSelectQuery::analyzeExpression
* throw out unnecessary columns based on the entire query. In unnecessary parts of the query, we will not execute subqueries.
*/
std::shared_ptr<bool> remove_where_filter;
std::shared_ptr<bool> remove_prewhere_filter;
bool remove_prewhere_filter;
{
ExpressionActionsChain chain;
if (query_analyzer->appendPrewhere(chain, false, remove_prewhere_filter))
if (query_analyzer->appendPrewhere(chain, !res.first_stage, remove_prewhere_filter))
{
res.prewhere_info = std::make_shared<PrewhereInfo>(
chain.steps.front().actions, query.prewhere_expression->getColumnName());
@ -274,7 +273,7 @@ InterpreterSelectQuery::AnalysisResult InterpreterSelectQuery::analyzeExpression
chain.addStep();
}
if (query_analyzer->appendWhere(chain, !res.first_stage, remove_where_filter))
if (query_analyzer->appendWhere(chain, !res.first_stage, res.remove_where_filter))
{
res.has_where = true;
res.before_where = chain.getLastActions();
@ -320,14 +319,11 @@ InterpreterSelectQuery::AnalysisResult InterpreterSelectQuery::analyzeExpression
}
if (res.prewhere_info)
res.prewhere_info->remove_prewhere_column = *remove_prewhere_filter;
res.prewhere_info->remove_prewhere_column = remove_prewhere_filter;
/// Before executing WHERE and HAVING, remove the extra columns from the block (mostly the aggregation keys).
if (res.has_where)
{
res.before_where->prependProjectInput();
res.remove_where_filter = *remove_where_filter;
}
if (res.has_having)
res.before_having->prependProjectInput();