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funnel.patch
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funnel.patch
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diff --git a/dbms/CMakeLists.txt b/dbms/CMakeLists.txt
index 0cb5824e1..9f2e2b5be 100644
--- a/dbms/CMakeLists.txt
+++ b/dbms/CMakeLists.txt
@@ -84,6 +84,7 @@ add_headers_and_sources(dbms src/Storages/Kafka)
add_headers_and_sources(dbms src/Storages/MergeTree)
add_headers_and_sources(dbms src/Client)
add_headers_and_sources(dbms src/Formats)
+add_headers_and_sources(dbms src/Compression)
list (APPEND clickhouse_common_io_sources ${CONFIG_BUILD})
list (APPEND clickhouse_common_io_headers ${CONFIG_VERSION} ${CONFIG_COMMON})
diff --git a/dbms/programs/client/Client.cpp b/dbms/programs/client/Client.cpp
index bf57d072f..73ea56405 100644
--- a/dbms/programs/client/Client.cpp
+++ b/dbms/programs/client/Client.cpp
@@ -844,7 +844,7 @@ private:
}
else if (print_time_to_stderr)
{
- std::cerr << watch.elapsedSeconds() << "\n";
+ std::cerr << "[Log] Cost seconds -> " << watch.elapsedSeconds() << "\n";
}
return true;
diff --git a/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.cpp b/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.cpp
index 4b8222963..4031854f2 100644
--- a/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.cpp
+++ b/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.cpp
@@ -10,6 +10,7 @@ namespace DB
namespace
{
+template <bool repeated = false>
AggregateFunctionPtr createAggregateFunctionWindowFunnel(const std::string & name, const DataTypes & arguments, const Array & params)
{
if (params.size() != 1)
@@ -21,14 +22,15 @@ AggregateFunctionPtr createAggregateFunctionWindowFunnel(const std::string & nam
if (arguments.size() > AggregateFunctionWindowFunnelData::max_events + 1)
throw Exception("Too many event arguments for aggregate function " + name, ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
- return std::make_shared<AggregateFunctionWindowFunnel>(arguments, params);
+ return std::make_shared<AggregateFunctionWindowFunnel<repeated>>(arguments, params);
}
}
void registerAggregateFunctionWindowFunnel(AggregateFunctionFactory & factory)
{
- factory.registerFunction("windowFunnel", createAggregateFunctionWindowFunnel, AggregateFunctionFactory::CaseInsensitive);
+ factory.registerFunction("windowFunnel", createAggregateFunctionWindowFunnel<false>, AggregateFunctionFactory::CaseInsensitive);
+ factory.registerFunction("windowRepeatedFunnel", createAggregateFunctionWindowFunnel<true>, AggregateFunctionFactory::CaseInsensitive);
}
}
diff --git a/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.h b/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.h
index c9a4e6b32..a8d5fe1df 100644
--- a/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.h
+++ b/dbms/src/AggregateFunctions/AggregateFunctionWindowFunnel.h
@@ -18,8 +18,8 @@ namespace DB
{
namespace ErrorCodes
{
- extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
- extern const int TOO_MANY_ARGUMENTS_FOR_FUNCTION;
+extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
+extern const int TOO_MANY_ARGUMENTS_FOR_FUNCTION;
}
struct ComparePairFirst final
@@ -131,12 +131,13 @@ struct AggregateFunctionWindowFunnelData
/** Calculates the max event level in a sliding window.
* The max size of events is 32, that's enough for funnel analytics
- *
+ * repeated indicates is there any repeated conditions, default to false
* Usage:
* - windowFunnel(window)(timestamp, cond1, cond2, cond3, ....)
*/
+template <bool repeated = false>
class AggregateFunctionWindowFunnel final
- : public IAggregateFunctionDataHelper<AggregateFunctionWindowFunnelData, AggregateFunctionWindowFunnel>
+ : public IAggregateFunctionDataHelper<AggregateFunctionWindowFunnelData, AggregateFunctionWindowFunnel<repeated>>
{
private:
UInt32 window;
@@ -183,7 +184,7 @@ private:
public:
String getName() const override
{
- return "windowFunnel";
+ return !repeated ? "windowFunnel" : "windowRepeatedFunnel";
}
AggregateFunctionWindowFunnel(const DataTypes & arguments, const Array & params)
@@ -191,7 +192,7 @@ public:
const auto time_arg = arguments.front().get();
if (!WhichDataType(time_arg).isDateTime() && !WhichDataType(time_arg).isUInt32())
throw Exception{"Illegal type " + time_arg->getName() + " of first argument of aggregate function " + getName()
- + ", must be DateTime or UInt32"};
+ + ", must be DateTime or UInt32"};
for (const auto i : ext::range(1, arguments.size()))
{
@@ -199,7 +200,7 @@ public:
if (!isUInt8(cond_arg))
throw Exception{"Illegal type " + cond_arg->getName() + " of argument " + toString(i + 1) + " of aggregate function "
+ getName() + ", must be UInt8",
- ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
+ ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
events_size = arguments.size() - 1;
@@ -214,14 +215,30 @@ public:
void add(AggregateDataPtr place, const IColumn ** columns, const size_t row_num, Arena *) const override
{
- const auto timestamp = static_cast<const ColumnVector<UInt32> *>(columns[0])->getData()[row_num];
- // reverse iteration and stable sorting are needed for events that are qualified by more than one condition.
- for (auto i = events_size; i > 0; --i)
+ if constexpr(!repeated)
{
- auto event = static_cast<const ColumnVector<UInt8> *>(columns[i])->getData()[row_num];
- if (event)
- this->data(place).add(timestamp, i);
+ for (const auto i : ext::range(1, events_size + 1))
+ {
+ auto event = static_cast<const ColumnVector<UInt8> *>(columns[i])->getData()[row_num];
+ if (event)
+ {
+ this->data(place).add(static_cast<const ColumnVector<UInt32> *>(columns[0])->getData()[row_num], i);
+ break;
+ }
+ }
+ }
+ else
+ {
+ for (size_t i = events_size; i >= 1; --i)
+ {
+ auto event = static_cast<const ColumnVector<UInt8> *>(columns[i])->getData()[row_num];
+ if (event)
+ {
+ this->data(place).add(static_cast<const ColumnVector<UInt32> *>(columns[0])->getData()[row_num], i);
+ }
+ }
}
+
}
void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
diff --git a/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.cpp b/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.cpp
new file mode 100644
index 000000000..4ff3297ed
--- /dev/null
+++ b/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.cpp
@@ -0,0 +1,36 @@
+#include <AggregateFunctions/AggregateFunctionFactory.h>
+#include <AggregateFunctions/AggregateFunctionXFunnel.h>
+#include <AggregateFunctions/Helpers.h>
+#include <AggregateFunctions/FactoryHelpers.h>
+
+
+namespace DB
+{
+
+namespace
+{
+
+template <bool repeated = false>
+AggregateFunctionPtr createAggregateFunctionXFunnel(const std::string & name, const DataTypes & arguments, const Array & params)
+{
+ if (params.size() < 3 || params.size() > 4)
+ throw Exception{"Aggregate function " + name + " requires 3 - 4 parameter.", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
+
+ if (arguments.size() < 2)
+ throw Exception("Aggregate function " + name + " requires one column array argument and at least one event condition.", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
+
+ if (arguments.size() > AggregateFunctionXFunnelData::max_events + 1)
+ throw Exception("Too many event arguments for aggregate function " + name, ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
+
+ return std::make_shared<AggregateFunctionXFunnel<repeated>>(arguments, params);
+}
+
+}
+
+void registerAggregateFunctionXFunnel(AggregateFunctionFactory & factory)
+{
+ factory.registerFunction("xFunnel", createAggregateFunctionXFunnel<false>, AggregateFunctionFactory::CaseInsensitive);
+ factory.registerFunction("xRepeatedFunnel", createAggregateFunctionXFunnel<true>, AggregateFunctionFactory::CaseInsensitive);
+}
+
+}
diff --git a/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.h b/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.h
new file mode 100644
index 000000000..f257a354a
--- /dev/null
+++ b/dbms/src/AggregateFunctions/AggregateFunctionXFunnel.h
@@ -0,0 +1,542 @@
+#pragma once
+
+#include <iostream>
+#include <sstream>
+#include <unordered_set>
+#include <Columns/ColumnArray.h>
+#include <Columns/ColumnTuple.h>
+#include <Columns/ColumnsNumber.h>
+#include <Common/ArenaAllocator.h>
+#include <Common/typeid_cast.h>
+#include <DataTypes/DataTypeArray.h>
+#include <DataTypes/DataTypeDateTime.h>
+#include <DataTypes/DataTypeTuple.h>
+#include <DataTypes/DataTypesNumber.h>
+#include <IO/ReadHelpers.h>
+#include <IO/WriteHelpers.h>
+
+#include <common/logger_useful.h>
+
+#include <Core/Field.h>
+#include <boost/algorithm/string/split.hpp>
+#include <ext/range.h>
+
+#include <AggregateFunctions/IAggregateFunction.h>
+
+namespace DB
+{
+namespace ErrorCodes
+{
+extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
+extern const int TOO_MANY_ARGUMENTS_FOR_FUNCTION;
+}
+
+struct TimestampEvent
+{
+ UInt32 timestamp;
+ UInt16 day;
+ Tuple tuple;
+ UInt8 event;
+
+ TimestampEvent(const UInt32 & timestamp_, const UInt16 & day_, Tuple & tuple_, const UInt8 & event_)
+ : timestamp{timestamp_}, day{day_}, tuple{std::move(tuple_)}, event{event_}
+ {
+ }
+};
+
+struct ComparePairFirst final
+{
+ bool operator()(const TimestampEvent & lhs, const TimestampEvent & rhs) const
+ {
+ return lhs.timestamp < rhs.timestamp;
+ }
+};
+
+
+static constexpr size_t bytes_on_stack = 4096;
+//using TimestampEvents = PODArray<TimestampEvent, bytes_on_stack>;
+using TimestampEvents = std::vector<TimestampEvent>;
+using validataFunc = std::function<bool(const Tuple & tuple, const Tuple & pre_tuple)>;
+using Comparator = ComparePairFirst;
+
+struct AggregateFunctionXFunnelData
+{
+ static constexpr auto max_events = 32;
+
+ bool sorted = true;
+ TimestampEvents events_list;
+
+
+ size_t size() const
+ {
+ return events_list.size();
+ }
+
+ void add(const UInt32 & timestamp, const UInt16 & day, Tuple & node, UInt8 event)
+ {
+ // Since most events should have already been sorted by timestamp.
+ if (sorted && events_list.size() > 0 && events_list.back().timestamp > timestamp)
+ {
+ sorted = false;
+ }
+ events_list.emplace_back(timestamp, day, node, event);
+ }
+
+ void merge(const AggregateFunctionXFunnelData & other)
+ {
+ const auto size = events_list.size();
+ // events_list.insert(std::begin(other.events_list), std::end(other.events_list));
+ events_list.insert(events_list.end(), other.events_list.begin(), other.events_list.end());
+
+ /// either sort whole container or do so partially merging ranges afterwards
+ if (!sorted && !other.sorted)
+ std::stable_sort(std::begin(events_list), std::end(events_list), Comparator{});
+ else
+ {
+ const auto begin = std::begin(events_list);
+ const auto middle = std::next(begin, size);
+ const auto end = std::end(events_list);
+
+ if (!sorted)
+ std::stable_sort(begin, middle, Comparator{});
+
+ if (!other.sorted)
+ std::stable_sort(middle, end, Comparator{});
+
+ std::inplace_merge(begin, middle, end, Comparator{});
+ }
+
+ sorted = true;
+ }
+
+ void sort()
+ {
+ if (!sorted)
+ {
+ std::stable_sort(std::begin(events_list), std::end(events_list), Comparator{});
+ sorted = true;
+ }
+ }
+
+ void serialize(WriteBuffer & buf) const
+ {
+ writeBinary(sorted, buf);
+ writeBinary(events_list.size(), buf);
+
+ for (const auto & events : events_list)
+ {
+ writeBinary(events.timestamp, buf);
+ writeBinary(events.day, buf);
+ auto & tuple = events.tuple;
+ writeBinary(tuple, buf);
+ writeBinary(events.event, buf);
+ }
+ }
+
+ void deserialize(ReadBuffer & buf)
+ {
+ readBinary(sorted, buf);
+
+ size_t size;
+ readBinary(size, buf);
+
+ /// TODO Protection against huge size
+
+ events_list.clear();
+ events_list.reserve(size);
+
+ UInt32 timestamp;
+ UInt16 day;
+ UInt8 event;
+
+ for (size_t i = 0; i < size; ++i)
+ {
+ readBinary(timestamp, buf);
+ readBinary(day, buf);
+
+ Tuple node;
+ readTuple(node, buf);
+
+ readBinary(event, buf);
+ events_list.emplace_back(timestamp, day, node, event);
+ }
+ }
+};
+
+
+/** Calculates the max event level in a sliding window.
+ * The max size of events is 32, that's enough for funnel analytics
+ * repeated indicates is there any repeated conditions, default to false
+ * Usage:
+ * - xFunnel(windowSize, 2, rule)( (timestamp, col1, col2....) , cond1, cond2, cond3, ....)
+ */
+template <bool repeated = false>
+class AggregateFunctionXFunnel final : public IAggregateFunctionDataHelper<AggregateFunctionXFunnelData, AggregateFunctionXFunnel<repeated>>
+{
+private:
+ UInt32 window;
+ UInt8 events_size;
+ UInt8 max_output_idx;
+ String rule_arg{""};
+ size_t tuple_size;
+
+ DataTypes dataTypes;
+
+ using validataIdxFuncs = std::vector<std::pair<UInt8, validataFunc>>;
+ std::vector<validataIdxFuncs> validators;
+
+ using Indexs = std::vector<UInt16>;
+ using DayIndexs = std::vector<Indexs>;
+
+ // 多维数组，第一维度表示某天开头的所有可能事件流序列
+ using DayIndexsPattern = std::vector<std::vector<DayIndexs>>;
+
+ /// 匹配算法
+ ALWAYS_INLINE DayIndexs getFunnelIndexArray(const AggregateFunctionXFunnelData & data) const
+ {
+ if (data.size() == 0)
+ return {};
+
+ const_cast<AggregateFunctionXFunnelData &>(data).sort();
+
+ // 返回多个漏斗匹配事件流，按天分组
+ UInt16 first_day = data.events_list.front().day;
+ int count = data.events_list.back().day - first_day + 1;
+ DayIndexs res(count);
+ DayIndexsPattern patterns(count, std::vector<DayIndexs>(events_size));
+
+// LOG_TRACE(&Logger::get("xFunnel"), "list=>" << data.events_list.size() << ",day_size" << count << "~" << "min=>" << first_day << "max=>" << data.events_list.back().day);
+
+
+ bool ok;
+ int tmp_idx;
+
+ /// let's fuck the BT rules
+ /// 最大目标一样的， 从右边开始，越靠近最大目标的
+ /// 类似多叉树， 没满足最后目标求最大深度最右节点序列， 满足最后目标后，只需要第一个
+
+ for (UInt16 idx = 0; idx < data.events_list.size(); idx++)
+ {
+ const auto & event = data.events_list[idx];
+ const auto & timestamp = event.timestamp;
+ const auto & tuple = event.tuple;
+ const auto & event_idx = event.event;
+ const auto & day = event.day;
+
+
+ if (event_idx == 0)
+ {
+ if (!res[day - first_day].empty())
+ {
+ continue;
+ }
+ Indexs tmp = Indexs{idx};
+ patterns[day - first_day][0].push_back(std::move(tmp));
+ }
+
+ else
+ {
+ for (UInt16 day_idx = 0; day_idx < patterns.size(); ++day_idx)
+ {
+ if (!res[day_idx].empty() || day < first_day + day_idx)
+ continue;
+
+ //tmp_idx 表示 该天 event_idx = 0 的时间最大值，如果这个值也不满足时间窗口，则我们可以取多叉树最右值
+ tmp_idx = patterns[day_idx].front().empty() ? -1 : patterns[day_idx].front().back().front();
+ if (tmp_idx != -1 && data.events_list[tmp_idx].timestamp + window < timestamp)
+ {
+ for (size_t event = events_size - 1; event > 0; --event)
+ {
+ if (!patterns[day_idx][event - 1].empty())
+ {
+ res[day_idx] = patterns[day_idx][event - 1].back();
+ count --;
+ break;
+ }
+ }
+ continue;
+ }
+
+ for (const auto & pre_indexes : patterns[day_idx][event_idx - 1])
+ {
+ if (pre_indexes.size() < 1)
+ break;
+
+ tmp_idx = pre_indexes.front();
+ if (data.events_list[tmp_idx].timestamp + window >= timestamp)
+ {
+ ok = true;
+
+ const auto & idx_funcs = validators[event_idx];
+ for (const auto & idxFunc : idx_funcs)
+ {
+ const auto & pre_tuple = data.events_list[pre_indexes[idxFunc.first]].tuple;
+ if (!idxFunc.second(tuple, pre_tuple))
+ {
+ ok = false;
+ break;
+ }
+ }
+
+ if (ok)
+ {
+ //如果是最后一个，只需要取最后一个！！
+ Indexs current_indexes = pre_indexes;
+ current_indexes.push_back(idx);
+ patterns[day_idx][event_idx].push_back(std::move(current_indexes));
+ }
+ }
+ }
+ /// now we reach the final goal~ but we should continue ...
+ if (event_idx + 1 == events_size && res[day_idx].empty() && !patterns[day_idx][event_idx].empty())
+ {
+ res[day_idx] = patterns[day_idx][event_idx].back();
+ count--;
+ }
+ }
+ }
+ }
+
+
+ /// for the days never reach final goal, let's gather them all.
+ if (count != 0)
+ {
+ for (UInt16 day_idx = 0; day_idx < patterns.size(); ++day_idx)
+ {
+ if (!res[day_idx].empty())
+ continue;
+
+ /// return the rightest event sequences
+ for (size_t event = events_size - 1; event > 0; --event)
+ {
+ if (!patterns[day_idx][event - 1].empty()) {
+ res[day_idx] = patterns[day_idx][event - 1].back();
+// LOG_TRACE(&Logger::get("xFunnel"), "filling=> " << day_idx << "size=>" << res[day_idx].size());
+ break;
+ }
+ }
+ }
+ }
+ return std::move(res);
+ }
+
+public:
+ String getName() const override
+ {
+ return !repeated ? "xFunnel" : "xRepeatedFunnel";
+ }
+
+ AggregateFunctionXFunnel(const DataTypes & arguments, const Array & params)
+ {
+ window = params.at(0).safeGet<UInt64>();
+
+ // [min_ouput_idx, max_output_idx]
+ max_output_idx = params.at(1).safeGet<UInt64>() - 1;
+ if (max_output_idx < 1)
+ throw Exception{"Invalid number of " + toString(max_output_idx+1) + ", must greater than 2"};
+
+ const auto col_arg = arguments[0].get();
+ auto tuple_args = typeid_cast<const DataTypeTuple *>(col_arg);
+ if (!tuple_args)
+ throw Exception{
+ "Illegal type " + col_arg->getName() + " of first argument of aggregate function " + getName() + ", must be tuple"};
+ tuple_size = tuple_args->getElements().size();
+ events_size = arguments.size() - 1;
+ validators.resize(events_size);
+
+ for (const auto & i : ext::range(1, arguments.size()))
+ {
+ const auto & cond_arg = arguments[i].get();
+ if (!typeid_cast<const DataTypeUInt8 *>(cond_arg))
+ throw Exception{"Illegal type " + cond_arg->getName() + " of argument " + toString(i + 1) + " of aggregate function "
+ + getName() + ", must be UInt8",
+ ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
+ }
+
+ // (timestamp, day, a,b,c,d,...) ) => (timestamp, day, a) for max_output_idx == 3
+ const auto & tupleType = typeid_cast<const DataTypeTuple *>(arguments[0].get());
+ const auto & time_arg = static_cast<const DataTypeUInt32 *>(tupleType->getElements()[0].get());
+ if (!time_arg)
+ throw Exception{"Illegal type " + time_arg->getName() + " 1st of first tuple argument of aggregate function " + getName()
+ + ", must be DateTime or UInt32"};
+
+ const auto & day_arg = static_cast<const DataTypeUInt16 *>(tupleType->getElements()[1].get());
+ if (!day_arg)
+ throw Exception{"Illegal type " + day_arg->getName() + " 2st of first tuple argument of aggregate function " + getName()
+ + ", must be Date or UInt16"};
+
+
+ for (const auto & idx : ext::range(0, max_output_idx + 1))
+ {
+ dataTypes.emplace_back(tupleType->getElements()[idx]);
+ }
+
+ if (params.size() > 2)
+ {
+ rule_arg = params.at(2).safeGet<String>();
+ if (!rule_arg.empty())
+ initRule();
+ }
+ LOG_TRACE(&Logger::get("xFunnel"), "tuple_size " << tuple_size << " rule_args " << rule_arg << " window " << window);
+ }
+
+ // 初始化rule规则
+ ALWAYS_INLINE void initRule()
+ {
+ std::vector<String> ruleStrs;
+ // eg 1.1=2.1,3.2=2.2
+ boost::split(ruleStrs, rule_arg, [](char c) { return c == ','; });
+ if (ruleStrs.size() < 1)
+ return;
+
+ for (String & ruleStr : ruleStrs)
+ {
+ std::vector<String> ruleKvs;
+ boost::split(ruleKvs, ruleStr, [](char c) { return c == '='; });
+
+ // eg [1.1,2.2]
+ if (ruleKvs.size() != 2)
+ throw Exception{"Illegal rule " + ruleStr, ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
+
+ std::vector<String> ruleKeys;
+ std::vector<String> ruleValues;
+ boost::split(ruleKeys, ruleKvs[0], [](char c) { return c == '.'; });
+ boost::split(ruleValues, ruleKvs[1], [](char c) { return c == '.'; });
+
+ int previous_event_level = std::atoi(ruleKeys[0].c_str());
+ int previous_label_idx = std::atoi(ruleKeys[1].c_str());
+
+ int current_event_level = std::atoi(ruleValues[0].c_str());
+ int current_label_idx = std::atoi(ruleValues[1].c_str());
+
+ if (previous_event_level < current_event_level)
+ {
+ addRule(previous_event_level - 1, previous_label_idx - 3, current_event_level - 1, current_label_idx - 3);
+ }
+ else
+ {
+ addRule(current_event_level - 1, current_label_idx - 3, previous_event_level - 1, previous_label_idx - 3);
+ }
+ }
+ }
+
+ ALWAYS_INLINE void addRule(const size_t & previous_event_level,
+ const size_t & previous_label_idx,
+ const size_t & current_event_level,
+ const size_t & current_label_idx)
+ {
+ auto func = [=](const Tuple & current_label, const Tuple & pre_label) {
+ const TupleBackend & current_arr = current_label.toUnderType();
+ const TupleBackend & previous_arr = pre_label.toUnderType();
+
+ return current_arr[current_label_idx] == previous_arr[previous_label_idx];
+ };
+ validators[current_event_level].push_back(std::make_pair(previous_event_level, func));
+ }
+
+ DataTypePtr getReturnType() const override
+ {
+ return std::make_shared<DataTypeArray>(std::make_shared<DataTypeArray>(std::make_shared<DataTypeTuple>(dataTypes)));
+ }
+
+ void add(AggregateDataPtr place, const IColumn ** columns, const size_t row_num, Arena *) const override
+ {
+ if constexpr (!repeated)
+ {
+ for (const auto idx : ext::range(1, events_size + 1))
+ {
+ auto event = static_cast<const ColumnVector<UInt8> *>(columns[idx])->getData()[row_num];
+ if (event)
+ {
+ auto labelCol = static_cast<const ColumnTuple *>(columns[0]);
+
+ /// 这里将timestamp和day抽离出来
+ Tuple tuple = Tuple(TupleBackend(tuple_size - 2));
+ auto & arr = tuple.toUnderType();
+ for (const auto i : ext::range(2, tuple_size))
+ {
+ labelCol->getColumn(i).get(row_num, arr[i - 2]);
+ }
+ this->data(place).add(labelCol->getColumn(0).getInt(row_num), labelCol->getColumn(1).getInt(row_num), tuple, idx - 1);
+ break;
+ }
+ }
+ }
+ else
+ {
+ for (auto idx = events_size; idx >= 1; --idx)
+ {
+ auto event = static_cast<const ColumnVector<UInt8> *>(columns[idx])->getData()[row_num];
+ if (event)
+ {
+ auto labelCol = static_cast<const ColumnTuple *>(columns[0]);
+
+ /// 这里将timestamp和day抽离出来
+ Tuple tuple = Tuple(TupleBackend(tuple_size - 2));
+ auto & arr = tuple.toUnderType();
+ for (const auto i : ext::range(2, tuple_size))
+ {
+ labelCol->getColumn(i).get(row_num, arr[i - 2]);
+ }
+ this->data(place).add(labelCol->getColumn(0).getInt(row_num), labelCol->getColumn(1).getInt(row_num), tuple, idx - 1);
+ }
+ }
+ }
+ }
+
+ void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
+ {
+ this->data(place).merge(this->data(rhs));
+ }
+
+ void serialize(ConstAggregateDataPtr place, WriteBuffer & buf) const override
+ {
+ this->data(place).serialize(buf);
+ }
+
+ void deserialize(AggregateDataPtr place, ReadBuffer & buf, Arena *) const override
+ {
+ this->data(place).deserialize(buf);
+ }
+
+ void insertResultInto(ConstAggregateDataPtr place, IColumn & to) const override
+ {
+ const auto & funnel_index_array = getFunnelIndexArray(this->data(place));
+ ColumnArray & arr_to = static_cast<ColumnArray &>(to);
+ ColumnArray::Offsets & offsets_to = arr_to.getOffsets();
+
+ int count = funnel_index_array.size();
+ for (const auto & funnel_index : funnel_index_array)
+ {
+ if (funnel_index.empty())
+ {
+ count --;
+ continue;
+ }
+ //static_cast<ColumnUInt8 &>(static_cast<ColumnArray &>(to).getData()).getData();
+ auto & arr_tuple_to = static_cast<ColumnArray &>(arr_to.getData());
+ auto & offset_tuple_to = arr_tuple_to.getOffsets();
+
+ for (const auto & index : funnel_index)
+ {
+ auto & timestamp_event = this->data(place).events_list[index];
+ auto & tuple_data = static_cast<ColumnTuple &>(arr_tuple_to.getData());
+
+ tuple_data.getColumn(0).insert(static_cast<UInt64>(timestamp_event.timestamp));
+ tuple_data.getColumn(1).insert(static_cast<UInt64>(timestamp_event.day));
+ for (size_t idx = 2; idx <= max_output_idx; idx++)
+ {
+ tuple_data.getColumn(idx).insert(timestamp_event.tuple.toUnderType()[idx - 2]);
+ }
+ }
+ offset_tuple_to.push_back(offset_tuple_to.size() == 0 ? funnel_index.size() : offset_tuple_to.back() + funnel_index.size());
+ }
+ offsets_to.push_back(offsets_to.size() == 0 ? count : offsets_to.back() + count);
+ }
+
+ const char * getHeaderFilePath() const override
+ {
+ return __FILE__;
+ }
+};
+}
diff --git a/dbms/src/AggregateFunctions/QuantileExact.h b/dbms/src/AggregateFunctions/QuantileExact.h
index 7ac639b8f..57c93f98f 100644
--- a/dbms/src/AggregateFunctions/QuantileExact.h
+++ b/dbms/src/AggregateFunctions/QuantileExact.h
@@ -70,11 +70,19 @@ struct QuantileExact
if (!array.empty())
{
size_t n = level < 1
- ? level * array.size()
- : (array.size() - 1);
+ ? level * array.size()
+ : (array.size() - 1);
std::nth_element(array.begin(), array.begin() + n, array.end()); /// NOTE You can think of the radix-select algorithm.
- return array[n];
+
+ //TODO https://stackoverflow.com/questions/1719070/what-is-the-right-approach-when-using-stl-container-for-median-calculation
+ // some hacks
+ auto med = array[n];
+ if (!(array.size() & 1) && level == 0.5) {
+ auto max_it = std::max_element(array.begin(), array.begin()+n);
+ return (*max_it + med) / 2.0;
+ }
+ return med;
}
return std::numeric_limits<Value>::quiet_NaN();
diff --git a/dbms/src/AggregateFunctions/registerAggregateFunctions.cpp b/dbms/src/AggregateFunctions/registerAggregateFunctions.cpp
index 3517ad57a..bd7ffff70 100644
--- a/dbms/src/AggregateFunctions/registerAggregateFunctions.cpp
+++ b/dbms/src/AggregateFunctions/registerAggregateFunctions.cpp
@@ -15,6 +15,7 @@ void registerAggregateFunctionGroupArrayInsertAt(AggregateFunctionFactory &);
void registerAggregateFunctionsQuantile(AggregateFunctionFactory &);
void registerAggregateFunctionsSequenceMatch(AggregateFunctionFactory &);
void registerAggregateFunctionWindowFunnel(AggregateFunctionFactory &);
+void registerAggregateFunctionXFunnel(AggregateFunctionFactory &);
void registerAggregateFunctionsMinMaxAny(AggregateFunctionFactory &);
void registerAggregateFunctionsStatisticsStable(AggregateFunctionFactory &);
void registerAggregateFunctionsStatisticsSimple(AggregateFunctionFactory &);
@@ -49,6 +50,7 @@ void registerAggregateFunctions()
registerAggregateFunctionsQuantile(factory);
registerAggregateFunctionsSequenceMatch(factory);
registerAggregateFunctionWindowFunnel(factory);
+ registerAggregateFunctionXFunnel(factory);
registerAggregateFunctionsMinMaxAny(factory);
registerAggregateFunctionsStatisticsStable(factory);
registerAggregateFunctionsStatisticsSimple(factory);
diff --git a/dbms/src/CMakeLists.txt b/dbms/src/CMakeLists.txt
index 30bd7c134..a9ccdb559 100644
--- a/dbms/src/CMakeLists.txt
+++ b/dbms/src/CMakeLists.txt
@@ -14,3 +14,4 @@ add_subdirectory (Client)
add_subdirectory (TableFunctions)
add_subdirectory (Analyzers)
add_subdirectory (Formats)
+add_subdirectory (Compression)
diff --git a/dbms/src/Common/ErrorCodes.cpp b/dbms/src/Common/ErrorCodes.cpp
index 4e724c995..7dd03459c 100644
--- a/dbms/src/Common/ErrorCodes.cpp
+++ b/dbms/src/Common/ErrorCodes.cpp
@@ -396,6 +396,8 @@ namespace ErrorCodes
extern const int MULTIPLE_ASSIGNMENTS_TO_COLUMN = 419;
extern const int CANNOT_UPDATE_COLUMN = 420;
extern const int CANNOT_ADD_DIFFERENT_AGGREGATE_STATES = 421;
+ extern const int ILLEGAL_SYNTAX_FOR_CODEC_TYPE = 422;
+ extern const int UNKNOWN_CODEC = 423;
extern const int KEEPER_EXCEPTION = 999;
extern const int POCO_EXCEPTION = 1000;
diff --git a/dbms/src/Compression/CMakeLists.txt b/dbms/src/Compression/CMakeLists.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/dbms/src/Compression/CompressionCodecLZ4.cpp b/dbms/src/Compression/CompressionCodecLZ4.cpp
new file mode 100644
index 000000000..610b81a69
--- /dev/null
+++ b/dbms/src/Compression/CompressionCodecLZ4.cpp
@@ -0,0 +1,50 @@
+#include <Compression/CompressionCodecLZ4.h>
+#include <lz4.h>
+#include <lz4hc.h>
+#include <IO/CompressedStream.h>
+#include <Compression/CompressionFactory.h>
+#include "CompressionCodecLZ4.h"
+
+
+namespace DB
+{
+
+char CompressionCodecLZ4::getMethodByte()
+{
+ return static_cast<char>(CompressionMethodByte::LZ4);
+}
+
+void CompressionCodecLZ4::getCodecDesc(String & codec_desc)
+{
+ codec_desc = "LZ4";
+}
+
+void CompressionCodecLZ4::compress(char * uncompressed_buf, size_t uncompressed_size, PODArray<char> & compressed_buf, size_t & compressed_size)
+{
+ static constexpr size_t header_size = 1 + sizeof(UInt32) + sizeof(UInt32);
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wold-style-cast"
+ compressed_buf.resize(header_size + LZ4_COMPRESSBOUND(uncompressed_size));
+#pragma GCC diagnostic pop
+
+ compressed_size = header_size + LZ4_compress_default(
+ uncompressed_buf,
+ &compressed_buf[header_size],
+ uncompressed_size,
+ LZ4_COMPRESSBOUND(uncompressed_size));
+
+ UInt32 compressed_size_32 = compressed_size;
+ UInt32 uncompressed_size_32 = uncompressed_size;
+ unalignedStore(&compressed_buf[1], compressed_size_32);
+ unalignedStore(&compressed_buf[5], uncompressed_size_32);
+}
+
+void registerCodecLZ4(CompressionCodecFactory & factory)
+{
+ factory.registerSimpleCompressionCodec("LZ4", static_cast<char>(CompressionMethodByte::LZ4), [&](){
+ return std::make_shared<CompressionCodecLZ4>();
+ });
+}
+
+}
diff --git a/dbms/src/Compression/CompressionCodecLZ4.h b/dbms/src/Compression/CompressionCodecLZ4.h
new file mode 100644
index 000000000..9ba8da3c3
--- /dev/null
+++ b/dbms/src/Compression/CompressionCodecLZ4.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <IO/WriteBuffer.h>
+#include <Compression/ICompressionCodec.h>
+#include <IO/BufferWithOwnMemory.h>
+#include <Parsers/StringRange.h>
+
+namespace DB
+{
+
+class CompressionCodecLZ4 : public ICompressionCodec
+{
+public:
+ char getMethodByte() override;
+
+ void getCodecDesc(String & codec_desc) override;
+
+ void compress(char * uncompressed_buf, size_t uncompressed_size, PODArray<char> & compressed_buf, size_t & compressed_size) override;
+};
+
+}
\ No newline at end of file
diff --git a/dbms/src/Compression/CompressionCodecMultiple.cpp b/dbms/src/Compression/CompressionCodecMultiple.cpp
new file mode 100644
index 000000000..b866aebbc
--- /dev/null
+++ b/dbms/src/Compression/CompressionCodecMultiple.cpp
@@ -0,0 +1,50 @@
+#include <Compression/CompressionCodecMultiple.h>
+#include <IO/CompressedStream.h>
+#include "CompressionCodecMultiple.h"
+
+
+namespace DB
+{
+
+CompressionCodecMultiple::CompressionCodecMultiple(Codecs codecs)
+ : codecs(codecs)
+{
+ /// TODO initialize inner_methods_code
+ for (size_t idx = 0; idx < codecs.size(); idx++)
+ {
+ if (idx != 0)
+ codec_desc = codec_desc + ',';
+
+ const auto codec = codecs[idx];
+ String inner_codec_desc;
+ codec->getCodecDesc(inner_codec_desc);
+ codec_desc = codec_desc + inner_codec_desc;
+ }
+}
+
+char CompressionCodecMultiple::getMethodByte()
+{
+ return static_cast<char>(CompressionMethodByte::Multiple);
+}
+
+void CompressionCodecMultiple::getCodecDesc(String & codec_desc_)
+{
+ codec_desc_ = codec_desc;
+}
+
+void CompressionCodecMultiple::compress(char * uncompressed_buf, size_t uncompressed_size, PODArray<char> & compressed_buf, size_t & compressed_size)
+{
+ char reserve = 1;
+
+ PODArray<char> un_compressed_buf(uncompressed_size);
+ un_compressed_buf.emplace_back(reserve);
+ un_compressed_buf.insert(uncompressed_buf, uncompressed_buf + uncompressed_size);
+
+ for (auto & codec : codecs)
+ {
+ codec->compress(&un_compressed_buf[1], uncompressed_size, compressed_buf, compressed_size);
+ uncompressed_size = compressed_size;
+ compressed_buf.swap(un_compressed_buf);
+ }
+}
+}
\ No newline at end of file
diff --git a/dbms/src/Compression/CompressionCodecMultiple.h b/dbms/src/Compression/CompressionCodecMultiple.h
new file mode 100644
index 000000000..2fc0aef2e
--- /dev/null
+++ b/dbms/src/Compression/CompressionCodecMultiple.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <Compression/ICompressionCodec.h>
+
+namespace DB
+{
+
+class CompressionCodecMultiple final : public ICompressionCodec
+{
+public:
+ CompressionCodecMultiple(Codecs codecs);
+
+ char getMethodByte() override;
+
+ void getCodecDesc(String & codec_desc) override;
+
+ void compress(char * uncompressed_buf, size_t uncompressed_size, PODArray<char> & compressed_buf, size_t & compressed_size) override;
+
+private:
+ Codecs codecs;
+ String codec_desc;
+
+};
+
+}
diff --git a/dbms/src/Compression/CompressionCodecNone.cpp b/dbms/src/Compression/CompressionCodecNone.cpp
new file mode 100644
index 000000000..49e4e4f01
--- /dev/null
+++ b/dbms/src/Compression/CompressionCodecNone.cpp
@@ -0,0 +1,41 @@
+#include <Compression/CompressionCodecNone.h>
+#include <IO/CompressedStream.h>
+#include <Compression/CompressionFactory.h>
+
+
+namespace DB
+{
+
+char CompressionCodecNone::getMethodByte()
+{