Unify query elapsed time measurements (#43455)

* Unify query elapsed time reporting

* add-test: Make shell tests executable

* Add some tests around query elapsed time

* Style and ubsan

src/Client/ClientBase.cpp

@@ -1034,7 +1034,13 @@ void ClientBase::onEndOfStream()
         progress_indication.clearProgressOutput(*tty_buf);
 
     if (output_format)
+    {
+        /// Do our best to estimate the start of the query so the output format matches the one reported by the server
+        bool is_running = false;
+        output_format->setStartTime(
+            clock_gettime_ns(CLOCK_MONOTONIC) - static_cast<UInt64>(progress_indication.elapsedSeconds() * 1000000000), is_running);
         output_format->finalize();
+    }
 
     resetOutput();
 

src/Common/Stopwatch.h

@@ -40,6 +40,10 @@ public:
       * Pass CLOCK_MONOTONIC_COARSE, if you need better performance with acceptable cost of several milliseconds of inaccuracy.
       */
     explicit Stopwatch(clockid_t clock_type_ = CLOCK_MONOTONIC) : clock_type(clock_type_) { start(); }
+    explicit Stopwatch(clockid_t clock_type_, UInt64 start_nanoseconds, bool is_running_)
+        : start_ns(start_nanoseconds), clock_type(clock_type_), is_running(is_running_)
+    {
+    }
 
     void start()                       { start_ns = nanoseconds(); is_running = true; }
     void stop()                        { stop_ns = nanoseconds(); is_running = false; }
@@ -51,6 +55,8 @@ public:
     UInt64 elapsedMilliseconds() const { return elapsedNanoseconds() / 1000000UL; }
     double elapsedSeconds() const      { return static_cast<double>(elapsedNanoseconds()) / 1000000000ULL; }
 
+    UInt64 getStart() { return start_ns; }
+
 private:
     UInt64 start_ns = 0;
     UInt64 stop_ns = 0;

src/Formats/FormatFactory.cpp

@@ -317,6 +317,9 @@ static void addExistingProgressToOutputFormat(OutputFormatPtr format, ContextPtr
         auto current_progress = element_id->getProgressIn();
         Progress read_progress{current_progress.read_rows, current_progress.read_bytes, current_progress.total_rows_to_read};
         format->onProgress(read_progress);
+
+        /// Update the start of the statistics to use the start of the query, and not the creation of the format class
+        format->setStartTime(element_id->getQueryCPUStartTime(), true);
     }
 }
 

src/Interpreters/ProcessList.cpp

@@ -69,7 +69,8 @@ static bool isUnlimitedQuery(const IAST * ast)
 }
 
 
-ProcessList::EntryPtr ProcessList::insert(const String & query_, const IAST * ast, ContextMutablePtr query_context)
+ProcessList::EntryPtr
+ProcessList::insert(const String & query_, const IAST * ast, ContextMutablePtr query_context, UInt64 watch_start_nanoseconds)
 {
     EntryPtr res;
 
@@ -243,13 +244,16 @@ ProcessList::EntryPtr ProcessList::insert(const String & query_, const IAST * as
             ///  since allocation and deallocation could happen in different threads
         }
 
-        auto process_it = processes.emplace(processes.end(), std::make_shared<QueryStatus>(
+        auto process_it = processes.emplace(
-            query_context,
+            processes.end(),
-            query_,
+            std::make_shared<QueryStatus>(
-            client_info,
+                query_context,
-            priorities.insert(static_cast<int>(settings.priority)),
+                query_,
-            std::move(thread_group),
+                client_info,
-            query_kind));
+                priorities.insert(static_cast<int>(settings.priority)),
+                std::move(thread_group),
+                query_kind,
+                watch_start_nanoseconds));
 
         increaseQueryKindAmount(query_kind);
 
@@ -344,11 +348,13 @@ QueryStatus::QueryStatus(
     const ClientInfo & client_info_,
     QueryPriorities::Handle && priority_handle_,
     ThreadGroupStatusPtr && thread_group_,
-    IAST::QueryKind query_kind_)
+    IAST::QueryKind query_kind_,
+    UInt64 watch_start_nanoseconds)
     : WithContext(context_)
     , query(query_)
     , client_info(client_info_)
     , thread_group(std::move(thread_group_))
+    , watch(CLOCK_MONOTONIC, watch_start_nanoseconds, true)
     , priority_handle(std::move(priority_handle_))
     , global_overcommit_tracker(context_->getGlobalOvercommitTracker())
     , query_kind(query_kind_)
@@ -522,7 +528,7 @@ QueryStatusInfo QueryStatus::getInfo(bool get_thread_list, bool get_profile_even
 
     res.query             = query;
     res.client_info       = client_info;
-    res.elapsed_seconds   = watch.elapsedSeconds();
+    res.elapsed_microseconds = watch.elapsedMicroseconds();
     res.is_cancelled      = is_killed.load(std::memory_order_relaxed);
     res.is_all_data_sent  = is_all_data_sent.load(std::memory_order_relaxed);
     res.read_rows         = progress_in.read_rows;

src/Interpreters/ProcessList.h

@@ -53,7 +53,7 @@ class ProcessListEntry;
 struct QueryStatusInfo
 {
     String query;
-    double elapsed_seconds;
+    UInt64 elapsed_microseconds;
     size_t read_rows;
     size_t read_bytes;
     size_t total_rows;
@@ -142,15 +142,14 @@ protected:
     CurrentMetrics::Increment num_queries_increment;
 
 public:
-
     QueryStatus(
         ContextPtr context_,
         const String & query_,
         const ClientInfo & client_info_,
         QueryPriorities::Handle && priority_handle_,
         ThreadGroupStatusPtr && thread_group_,
-        IAST::QueryKind query_kind_
+        IAST::QueryKind query_kind_,
-        );
+        UInt64 watch_start_nanoseconds);
 
     ~QueryStatus();
 
@@ -221,6 +220,9 @@ public:
     bool checkTimeLimit();
     /// Same as checkTimeLimit but it never throws
     [[nodiscard]] bool checkTimeLimitSoft();
+
+    /// Get the reference for the start of the query. Used to synchronize with other Stopwatches
+    UInt64 getQueryCPUStartTime() { return watch.getStart(); }
 };
 
 using QueryStatusPtr = std::shared_ptr<QueryStatus>;
@@ -382,7 +384,7 @@ public:
       * If timeout is passed - throw an exception.
       * Don't count KILL QUERY queries.
       */
-    EntryPtr insert(const String & query_, const IAST * ast, ContextMutablePtr query_context);
+    EntryPtr insert(const String & query_, const IAST * ast, ContextMutablePtr query_context, UInt64 watch_start_nanoseconds);
 
     /// Number of currently executing queries.
     size_t size() const { return processes.size(); }

src/Interpreters/executeQuery.cpp

@@ -201,26 +201,32 @@ static void logException(ContextPtr context, QueryLogElement & elem)
             elem.stack_trace);
 }
 
-static void onExceptionBeforeStart(const String & query_for_logging, ContextPtr context, UInt64 current_time_us, ASTPtr ast, const std::shared_ptr<OpenTelemetry::SpanHolder> & query_span)
+static void onExceptionBeforeStart(
+    const String & query_for_logging,
+    ContextPtr context,
+    ASTPtr ast,
+    const std::shared_ptr<OpenTelemetry::SpanHolder> & query_span,
+    UInt64 elapsed_millliseconds)
 {
+    auto query_end_time = std::chrono::system_clock::now();
+
     /// Exception before the query execution.
     if (auto quota = context->getQuota())
         quota->used(QuotaType::ERRORS, 1, /* check_exceeded = */ false);
 
     const Settings & settings = context->getSettingsRef();
 
+    const auto & client_info = context->getClientInfo();
+
     /// Log the start of query execution into the table if necessary.
     QueryLogElement elem;
 
     elem.type = QueryLogElementType::EXCEPTION_BEFORE_START;
-
+    elem.event_time = timeInSeconds(query_end_time);
-    // all callers to onExceptionBeforeStart method construct the timespec for event_time and
+    elem.event_time_microseconds = timeInMicroseconds(query_end_time);
-    // event_time_microseconds from the same time point. So, it can be assumed that both of these
+    elem.query_start_time = client_info.initial_query_start_time;
-    // times are equal up to the precision of a second.
+    elem.query_start_time_microseconds = client_info.initial_query_start_time_microseconds;
-    elem.event_time = current_time_us / 1000000;
+    elem.query_duration_ms = elapsed_millliseconds;
-    elem.event_time_microseconds = current_time_us;
-    elem.query_start_time = current_time_us / 1000000;
-    elem.query_start_time_microseconds = current_time_us;
 
     elem.current_database = context->getCurrentDatabase();
     elem.query = query_for_logging;
@@ -324,19 +330,32 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
     /// we still have enough span logs for the execution of external queries.
     std::shared_ptr<OpenTelemetry::SpanHolder> query_span = internal ? nullptr : std::make_shared<OpenTelemetry::SpanHolder>("query");
 
-    const auto current_time = std::chrono::system_clock::now();
+    auto query_start_time = std::chrono::system_clock::now();
+
+    /// Used to set the watch in QueryStatus and the output formats. It is not based on query_start_time as that might be based on
+    /// the value passed by the client
+    Stopwatch start_watch{CLOCK_MONOTONIC};
 
     auto & client_info = context->getClientInfo();
 
-    // If it's not an internal query and we don't see an initial_query_start_time yet, initialize it
+    if (!internal)
-    // to current time. Internal queries are those executed without an independent client context,
-    // thus should not set initial_query_start_time, because it might introduce data race. It's also
-    // possible to have unset initial_query_start_time for non-internal and non-initial queries. For
-    // example, the query is from an initiator that is running an old version of clickhouse.
-    if (!internal && client_info.initial_query_start_time == 0)
     {
-        client_info.initial_query_start_time = timeInSeconds(current_time);
+        // If it's not an internal query and we don't see an initial_query_start_time yet, initialize it
-        client_info.initial_query_start_time_microseconds = timeInMicroseconds(current_time);
+        // to current time. Internal queries are those executed without an independent client context,
+        // thus should not set initial_query_start_time, because it might introduce data race. It's also
+        // possible to have unset initial_query_start_time for non-internal and non-initial queries. For
+        // example, the query is from an initiator that is running an old version of clickhouse.
+        // On the other hand, if it's initialized then take it as the start of the query
+        if (client_info.initial_query_start_time == 0)
+        {
+            client_info.initial_query_start_time = timeInSeconds(query_start_time);
+            client_info.initial_query_start_time_microseconds = timeInMicroseconds(query_start_time);
+        }
+        else
+        {
+            query_start_time = std::chrono::time_point<std::chrono::system_clock>(
+                std::chrono::microseconds{client_info.initial_query_start_time_microseconds});
+        }
     }
 
     assert(internal || CurrentThread::get().getQueryContext());
@@ -413,7 +432,7 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
         logQuery(query_for_logging, context, internal, stage);
 
         if (!internal)
-            onExceptionBeforeStart(query_for_logging, context, timeInMicroseconds(current_time), ast, query_span);
+            onExceptionBeforeStart(query_for_logging, context, ast, query_span, start_watch.elapsedMilliseconds());
         throw;
     }
 
@@ -514,7 +533,7 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
         if (!internal && !ast->as<ASTShowProcesslistQuery>())
         {
             /// processlist also has query masked now, to avoid secrets leaks though SHOW PROCESSLIST by other users.
-            process_list_entry = context->getProcessList().insert(query_for_logging, ast.get(), context);
+            process_list_entry = context->getProcessList().insert(query_for_logging, ast.get(), context, start_watch.getStart());
             context->setProcessListElement(process_list_entry->getQueryStatus());
         }
 
@@ -720,10 +739,10 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
 
             elem.type = QueryLogElementType::QUERY_START; //-V1048
 
-            elem.event_time = timeInSeconds(current_time);
+            elem.event_time = timeInSeconds(query_start_time);
-            elem.event_time_microseconds = timeInMicroseconds(current_time);
+            elem.event_time_microseconds = timeInMicroseconds(query_start_time);
-            elem.query_start_time = timeInSeconds(current_time);
+            elem.query_start_time = timeInSeconds(query_start_time);
-            elem.query_start_time_microseconds = timeInMicroseconds(current_time);
+            elem.query_start_time_microseconds = timeInMicroseconds(query_start_time);
 
             elem.current_database = context->getCurrentDatabase();
             elem.query = query_for_logging;
@@ -772,25 +791,29 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
             }
 
             /// Common code for finish and exception callbacks
-            auto status_info_to_query_log = [](QueryLogElement & element, const QueryStatusInfo & info, const ASTPtr query_ast, const ContextPtr context_ptr) mutable
+            auto status_info_to_query_log
+                = [](QueryLogElement & element, const QueryStatusInfo & info, const ASTPtr query_ast, const ContextPtr context_ptr) mutable
             {
-                UInt64 query_time = static_cast<UInt64>(info.elapsed_seconds * 1000000);
+                const auto time_now = std::chrono::system_clock::now();
-                ProfileEvents::increment(ProfileEvents::QueryTimeMicroseconds, query_time);
+                UInt64 elapsed_microseconds = info.elapsed_microseconds;
+                element.event_time = timeInSeconds(time_now);
+                element.event_time_microseconds = timeInMicroseconds(time_now);
+                element.query_duration_ms = elapsed_microseconds / 1000;
+
+                ProfileEvents::increment(ProfileEvents::QueryTimeMicroseconds, elapsed_microseconds);
                 if (query_ast->as<ASTSelectQuery>() || query_ast->as<ASTSelectWithUnionQuery>())
                 {
-                    ProfileEvents::increment(ProfileEvents::SelectQueryTimeMicroseconds, query_time);
+                    ProfileEvents::increment(ProfileEvents::SelectQueryTimeMicroseconds, elapsed_microseconds);
                 }
                 else if (query_ast->as<ASTInsertQuery>())
                 {
-                    ProfileEvents::increment(ProfileEvents::InsertQueryTimeMicroseconds, query_time);
+                    ProfileEvents::increment(ProfileEvents::InsertQueryTimeMicroseconds, elapsed_microseconds);
                 }
                 else
                 {
-                    ProfileEvents::increment(ProfileEvents::OtherQueryTimeMicroseconds, query_time);
+                    ProfileEvents::increment(ProfileEvents::OtherQueryTimeMicroseconds, elapsed_microseconds);
                 }
 
-                element.query_duration_ms = static_cast<UInt64>(info.elapsed_seconds * 1000);
-
                 element.read_rows = info.read_rows;
                 element.read_bytes = info.read_bytes;
 
@@ -844,16 +867,8 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
                     CurrentThread::finalizePerformanceCounters();
 
                     QueryStatusInfo info = process_list_elem->getInfo(true, context->getSettingsRef().log_profile_events);
-
-                    double elapsed_seconds = info.elapsed_seconds;
-
                     elem.type = QueryLogElementType::QUERY_FINISH;
 
-                    // construct event_time and event_time_microseconds using the same time point
-                    // so that the two times will always be equal up to a precision of a second.
-                    const auto finish_time = std::chrono::system_clock::now();
-                    elem.event_time = timeInSeconds(finish_time);
-                    elem.event_time_microseconds = timeInMicroseconds(finish_time);
                     status_info_to_query_log(elem, info, ast, context);
 
                     if (pulling_pipeline)
@@ -877,9 +892,15 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
 
                     if (elem.read_rows != 0)
                     {
-                        LOG_INFO(&Poco::Logger::get("executeQuery"), "Read {} rows, {} in {} sec., {} rows/sec., {}/sec.",
+                        double elapsed_seconds = static_cast<double>(info.elapsed_microseconds) / 1000000.0;
-                            elem.read_rows, ReadableSize(elem.read_bytes), elapsed_seconds,
+                        double rows_per_second = static_cast<double>(elem.read_rows) / elapsed_seconds;
-                            static_cast<size_t>(elem.read_rows / elapsed_seconds),
+                        LOG_INFO(
+                            &Poco::Logger::get("executeQuery"),
+                            "Read {} rows, {} in {} sec., {} rows/sec., {}/sec.",
+                            elem.read_rows,
+                            ReadableSize(elem.read_bytes),
+                            elapsed_seconds,
+                            rows_per_second,
                             ReadableSize(elem.read_bytes / elapsed_seconds));
                     }
 
@@ -893,8 +914,8 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
                         if (auto processors_profile_log = context->getProcessorsProfileLog())
                         {
                             ProcessorProfileLogElement processor_elem;
-                            processor_elem.event_time = timeInSeconds(finish_time);
+                            processor_elem.event_time = elem.event_time;
-                            processor_elem.event_time_microseconds = timeInMicroseconds(finish_time);
+                            processor_elem.event_time_microseconds = elem.event_time_microseconds;
                             processor_elem.query_id = elem.client_info.current_query_id;
 
                             auto get_proc_id = [](const IProcessor & proc) -> UInt64
@@ -969,7 +990,8 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
                 }
             };
 
-            auto exception_callback = [elem,
+            auto exception_callback = [start_watch,
+                                       elem,
                                        context,
                                        ast,
                                        log_queries,
@@ -992,14 +1014,6 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
                     quota->used(QuotaType::ERRORS, 1, /* check_exceeded = */ false);
 
                 elem.type = QueryLogElementType::EXCEPTION_WHILE_PROCESSING;
-
-                // event_time and event_time_microseconds are being constructed from the same time point
-                // to ensure that both the times will be equal up to the precision of a second.
-                const auto time_now = std::chrono::system_clock::now();
-
-                elem.event_time = timeInSeconds(time_now);
-                elem.event_time_microseconds = timeInMicroseconds(time_now);
-                elem.query_duration_ms = 1000 * (elem.event_time - elem.query_start_time);
                 elem.exception_code = getCurrentExceptionCode();
                 elem.exception = getCurrentExceptionMessage(false);
 
@@ -1008,12 +1022,19 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
 
                 /// Update performance counters before logging to query_log
                 CurrentThread::finalizePerformanceCounters();
+                const auto time_now = std::chrono::system_clock::now();
+                elem.event_time = timeInSeconds(time_now);
+                elem.event_time_microseconds = timeInMicroseconds(time_now);
 
                 if (process_list_elem)
                 {
                     QueryStatusInfo info = process_list_elem->getInfo(true, current_settings.log_profile_events, false);
                     status_info_to_query_log(elem, info, ast, context);
                 }
+                else
+                {
+                    elem.query_duration_ms = start_watch.elapsedMilliseconds();
+                }
 
                 if (current_settings.calculate_text_stack_trace)
                     setExceptionStackTrace(elem);
@@ -1063,7 +1084,7 @@ static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
         }
 
         if (!internal)
-            onExceptionBeforeStart(query_for_logging, context, timeInMicroseconds(current_time), ast, query_span);
+            onExceptionBeforeStart(query_for_logging, context, ast, query_span, start_watch.elapsedMilliseconds());
 
         throw;
     }

src/Processors/Formats/IOutputFormat.h

@@ -76,6 +76,15 @@ public:
 
     void doNotWritePrefix() { need_write_prefix = false; }
 
+    /// Reset the statistics watch to a specific point in time
+    /// If set to not running it will stop on the call (elapsed = now() - given start)
+    void setStartTime(UInt64 start, bool is_running)
+    {
+        statistics.watch = Stopwatch(CLOCK_MONOTONIC, start, true);
+        if (!is_running)
+            statistics.watch.stop();
+    }
+
 protected:
     friend class ParallelFormattingOutputFormat;
 
@@ -132,9 +141,6 @@ protected:
         Chunk extremes;
     };
 
-    void setOutsideStatistics(Statistics statistics_) { statistics = std::make_shared<Statistics>(std::move(statistics_)); }
-    std::shared_ptr<Statistics> getOutsideStatistics() const { return statistics; }
-
     /// In some formats the way we print extremes depends on
     /// were totals printed or not. In this case in parallel formatting
     /// we should notify underling format if totals were printed.
@@ -160,10 +166,10 @@ protected:
     bool need_write_suffix = true;
 
     RowsBeforeLimitCounterPtr rows_before_limit_counter;
+    Statistics statistics;
 
 private:
     size_t rows_read_before = 0;
-    std::shared_ptr<Statistics> statistics = nullptr;
     bool are_totals_written = false;
 
     /// Counters for consumed chunks. Are used for QueryLog.

src/Processors/Formats/Impl/JSONColumnsWithMetadataBlockOutputFormat.cpp

@@ -77,10 +77,6 @@ void JSONColumnsWithMetadataBlockOutputFormat::consumeTotals(Chunk chunk)
 
 void JSONColumnsWithMetadataBlockOutputFormat::finalizeImpl()
 {
-    auto outside_statistics = getOutsideStatistics();
-    if (outside_statistics)
-        statistics = std::move(*outside_statistics);
-
     JSONUtils::writeAdditionalInfo(
         rows,
         statistics.rows_before_limit,

src/Processors/Formats/Impl/JSONColumnsWithMetadataBlockOutputFormat.h

@@ -60,7 +60,6 @@ protected:
     void writeExtremesElement(const char * title, const Columns & columns, size_t row_num);
 
     DataTypes types;
-    Statistics statistics;
     size_t rows;
 };
 

src/Processors/Formats/Impl/JSONRowOutputFormat.cpp

@@ -112,10 +112,6 @@ void JSONRowOutputFormat::writeAfterExtremes()
 
 void JSONRowOutputFormat::finalizeImpl()
 {
-    auto outside_statistics = getOutsideStatistics();
-    if (outside_statistics)
-        statistics = std::move(*outside_statistics);
-
     JSONUtils::writeAdditionalInfo(
         row_count,
         statistics.rows_before_limit,

src/Processors/Formats/Impl/JSONRowOutputFormat.h

@@ -66,7 +66,6 @@ protected:
     size_t row_count = 0;
     Names names;   /// The column names are pre-escaped to be put into JSON string literal.
 
-    Statistics statistics;
     FormatSettings settings;
 
     bool yield_strings;

src/Processors/Formats/Impl/MySQLOutputFormat.cpp

@@ -79,11 +79,14 @@ void MySQLOutputFormat::finalizeImpl()
         CurrentThread::finalizePerformanceCounters();
         QueryStatusInfo info = process_list_elem->getInfo();
         affected_rows = info.written_rows;
+        double elapsed_seconds = static_cast<double>(info.elapsed_microseconds) / 1000000.0;
         human_readable_info = fmt::format(
             "Read {} rows, {} in {} sec., {} rows/sec., {}/sec.",
-            info.read_rows, ReadableSize(info.read_bytes), info.elapsed_seconds,
+            info.read_rows,
-            static_cast<size_t>(info.read_rows / info.elapsed_seconds),
+            ReadableSize(info.read_bytes),
-            ReadableSize(info.read_bytes / info.elapsed_seconds));
+            elapsed_seconds,
+            static_cast<size_t>(info.read_rows / elapsed_seconds),
+            ReadableSize(info.read_bytes / elapsed_seconds));
     }
 
     const auto & header = getPort(PortKind::Main).getHeader();

src/Processors/Formats/Impl/ParallelFormattingOutputFormat.cpp

@@ -216,7 +216,7 @@ namespace DB
                 }
                 case ProcessingUnitType::FINALIZE:
                 {
-                    formatter->setOutsideStatistics(std::move(unit.statistics));
+                    formatter->statistics = std::move(unit.statistics);
                     formatter->finalizeImpl();
                     break;
                 }

src/Processors/Formats/Impl/ParallelFormattingOutputFormat.h

@@ -227,7 +227,6 @@ private:
     size_t rows_consumed = 0;
     std::atomic_bool are_totals_written = false;
 
-    Statistics statistics;
     /// We change statistics in onProgress() which can be called from different threads.
     std::mutex statistics_mutex;
     bool save_totals_and_extremes_in_statistics;

src/Processors/Formats/Impl/TemplateBlockOutputFormat.cpp

@@ -137,10 +137,6 @@ void TemplateBlockOutputFormat::finalizeImpl()
         return;
 
     size_t parts = format.format_idx_to_column_idx.size();
-    auto outside_statistics = getOutsideStatistics();
-    if (outside_statistics)
-        statistics = std::move(*outside_statistics);
-
     for (size_t i = 0; i < parts; ++i)
     {
         auto type = std::make_shared<DataTypeUInt64>();

src/Processors/Formats/Impl/TemplateBlockOutputFormat.h

@@ -57,8 +57,6 @@ private:
     ParsedTemplateFormatString format;
     ParsedTemplateFormatString row_format;
 
-    Statistics statistics;
-
     size_t row_count = 0;
 
     std::string row_between_delimiter;

src/Processors/Formats/Impl/XMLRowOutputFormat.cpp

@@ -190,9 +190,6 @@ void XMLRowOutputFormat::finalizeImpl()
     writeIntText(row_count, *ostr);
     writeCString("</rows>\n", *ostr);
 
-    auto outside_statistics = getOutsideStatistics();
-    if (outside_statistics)
-        statistics = std::move(*outside_statistics);
 
     writeRowsBeforeLimitAtLeast();
 

src/Processors/Formats/Impl/XMLRowOutputFormat.h

@@ -61,7 +61,6 @@ private:
     NamesAndTypes fields;
     Names field_tag_names;
 
-    Statistics statistics;
     const FormatSettings format_settings;
 };
 

src/Storages/System/StorageSystemProcesses.cpp

@@ -119,7 +119,7 @@ void StorageSystemProcesses::fillData(MutableColumns & res_columns, ContextPtr c
         res_columns[i++]->insert(process.client_info.quota_key);
         res_columns[i++]->insert(process.client_info.distributed_depth);
 
-        res_columns[i++]->insert(process.elapsed_seconds);
+        res_columns[i++]->insert(static_cast<double>(process.elapsed_microseconds) / 100000.0);
         res_columns[i++]->insert(process.is_cancelled);
         res_columns[i++]->insert(process.is_all_data_sent);
         res_columns[i++]->insert(process.read_rows);

tests/queries/0_stateless/02483_elapsed_time.reference

@@ -0,0 +1,14 @@
+1	1
+Greater (Ok)
+Greater (Ok)
+Row 1:
+──────
+type:                               QueryFinish
+elapsed_more_than_one_second:       1
+end_minus_start_more_than_a_second: 1
+
+Row 2:
+──────
+type:                               QueryFinish
+elapsed_more_than_one_second:       1
+end_minus_start_more_than_a_second: 1

tests/queries/0_stateless/02483_elapsed_time.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# shellcheck source=../shell_config.sh
+. "$CURDIR"/../shell_config.sh
+
+
+# The following query fails during query interpretation so it throws an ExceptionBeforeStart
+EXCEPTION_BEFORE_START_QUERY="WITH
+                              (
+                                  SELECT sleepEachRow(1)
+                              ) AS sub
+                              SELECT *
+                              FROM
+                              (
+                                  SELECT *
+                                  FROM system.numbers
+                                  WHERE number IN (sub)
+                              )
+                              SETTINGS enable_global_with_statement = 0"
+
+
+# For this query the system.query_log needs to show ExceptionBeforeStart and elapsed seconds >= 1.0
+QUERY_ID="${CLICKHOUSE_DATABASE}_$(date +%s)_02883_q1"
+${CLICKHOUSE_CLIENT} -m --query "$EXCEPTION_BEFORE_START_QUERY" --query_id="$QUERY_ID" >/dev/null 2>&1
+
+${CLICKHOUSE_CLIENT} --query "SYSTEM FLUSH LOGS"
+${CLICKHOUSE_CLIENT} --query "SELECT type == 'ExceptionBeforeStart' as expected_type, query_duration_ms >= 1000 as elapsed_more_than_one_second FROM system.query_log WHERE query_id='$QUERY_ID'"
+
+# Now we test with a query that will take 1+ seconds. The CLI should show that as part of the output format
+OK_QUERY_JSON="
+WITH (
+        SELECT sleepEachRow(1.0)
+    ) AS sub
+SELECT *
+FROM
+(
+    SELECT *
+    FROM system.one
+)
+FORMAT JSON
+SETTINGS enable_global_with_statement = 1"
+QUERY_ID_2="${CLICKHOUSE_DATABASE}_$(date +%s)_02883_q2"
+${CLICKHOUSE_CLIENT} --query "$OK_QUERY_JSON" --query_id="${QUERY_ID_2}" | grep elapsed | awk '{ if($2 >= 1.0) { print "Greater (Ok)" } else { print "Smaller than expected: " $2 } }'
+
+OK_QUERY_XML="
+WITH (
+       SELECT sleepEachRow(1.0)
+   ) AS sub
+SELECT *
+FROM
+(
+   SELECT *
+   FROM system.one
+)
+FORMAT XML
+SETTINGS enable_global_with_statement = 1"
+QUERY_ID_3="${CLICKHOUSE_DATABASE}_$(date +%s)_02883_q3"
+${CLICKHOUSE_CLIENT} --query "$OK_QUERY_XML" --query_id="${QUERY_ID_3}" | grep elapsed | awk  -F '[<>]' '{ if($3 >= 1.0) { print "Greater (Ok)" } else { print "Smaller than expected: " $3 } }'
+
+${CLICKHOUSE_CLIENT} --query "SYSTEM FLUSH LOGS"
+${CLICKHOUSE_CLIENT} --query "
+  SELECT
+    type,
+    query_duration_ms >= 1000 as elapsed_more_than_one_second,
+    (toDecimal64(event_time_microseconds, 6) - toDecimal64(query_start_time_microseconds, 6)) > 1.0 AS end_minus_start_more_than_a_second
+  FROM system.query_log
+  WHERE type='QueryFinish' AND (query_id='$QUERY_ID_2' OR query_id='${QUERY_ID_3}')
+  FORMAT Vertical"

tests/queries/0_stateless/add-test

@@ -25,4 +25,7 @@ fi
 
 set -x
 touch ${TESTS_PATH}/${NEW_TEST_NO}_${FILENAME}.${FILEEXT}
+if [[ $FILEEXT == "sh" ]] ; then
+    chmod +x ${TESTS_PATH}/${NEW_TEST_NO}_${FILENAME}.${FILEEXT}
+fi
 touch ${TESTS_PATH}/${NEW_TEST_NO}_${FILENAME}.reference