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#include <Processors/QueryPlan/TotalsHavingStep.h>
#include <Processors/Transforms/DistinctTransform.h>
#include <Processors/Transforms/TotalsHavingTransform.h>
#include <QueryPipeline/QueryPipelineBuilder.h>
#include <Interpreters/ExpressionActions.h>
#include <IO/Operators.h>
#include <Common/JSONBuilder.h>
namespace DB
{
static ITransformingStep::Traits getTraits(bool has_filter)
{
return ITransformingStep::Traits
{
{
.returns_single_stream = true,
.preserves_number_of_streams = false,
.preserves_sorting = true,
},
{
.preserves_number_of_rows = !has_filter,
}
};
}
TotalsHavingStep::TotalsHavingStep(
const DataStream & input_stream_,
const AggregateDescriptions & aggregates_,
bool overflow_row_,
const ActionsDAGPtr & actions_dag_,
const std::string & filter_column_,
bool remove_filter_,
TotalsMode totals_mode_,
double auto_include_threshold_,
bool final_)
: ITransformingStep(
input_stream_,
TotalsHavingTransform::transformHeader(
input_stream_.header,
actions_dag_.get(),
filter_column_,
remove_filter_,
final_,
getAggregatesMask(input_stream_.header, aggregates_)),
getTraits(!filter_column_.empty()))
, aggregates(aggregates_)
, overflow_row(overflow_row_)
, actions_dag(actions_dag_)
, filter_column_name(filter_column_)
, remove_filter(remove_filter_)
, totals_mode(totals_mode_)
, auto_include_threshold(auto_include_threshold_)
, final(final_)
{
}
void TotalsHavingStep::transformPipeline(QueryPipelineBuilder & pipeline, const BuildQueryPipelineSettings & settings)
{
auto expression_actions = actions_dag ? std::make_shared<ExpressionActions>(actions_dag, settings.getActionsSettings()) : nullptr;
auto totals_having = std::make_shared<TotalsHavingTransform>(
pipeline.getHeader(),
getAggregatesMask(pipeline.getHeader(), aggregates),
overflow_row,
expression_actions,
filter_column_name,
remove_filter,
totals_mode,
auto_include_threshold,
final);
pipeline.addTotalsHavingTransform(std::move(totals_having));
}
static String totalsModeToString(TotalsMode totals_mode, double auto_include_threshold)
{
switch (totals_mode)
{
case TotalsMode::BEFORE_HAVING:
return "before_having";
case TotalsMode::AFTER_HAVING_INCLUSIVE:
return "after_having_inclusive";
case TotalsMode::AFTER_HAVING_EXCLUSIVE:
return "after_having_exclusive";
case TotalsMode::AFTER_HAVING_AUTO:
return "after_having_auto threshold " + std::to_string(auto_include_threshold);
}
UNREACHABLE();
}
void TotalsHavingStep::describeActions(FormatSettings & settings) const
{
String prefix(settings.offset, ' ');
settings.out << prefix << "Filter column: " << filter_column_name;
if (remove_filter)
settings.out << " (removed)";
settings.out << '\n';
settings.out << prefix << "Mode: " << totalsModeToString(totals_mode, auto_include_threshold) << '\n';
if (actions_dag)
{
bool first = true;
auto expression = std::make_shared<ExpressionActions>(actions_dag);
for (const auto & action : expression->getActions())
{
settings.out << prefix << (first ? "Actions: "
: " ");
first = false;
settings.out << action.toString() << '\n';
}
}
}
void TotalsHavingStep::describeActions(JSONBuilder::JSONMap & map) const
{
map.add("Mode", totalsModeToString(totals_mode, auto_include_threshold));
if (actions_dag)
{
map.add("Filter column", filter_column_name);
auto expression = std::make_shared<ExpressionActions>(actions_dag);
map.add("Expression", expression->toTree());
}
}
void TotalsHavingStep::updateOutputStream()
{
output_stream = createOutputStream(
input_streams.front(),
TotalsHavingTransform::transformHeader(
input_streams.front().header,
actions_dag.get(),
filter_column_name,
remove_filter,
final,
getAggregatesMask(input_streams.front().header, aggregates)),
getDataStreamTraits());
}
}
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