diff --git a/CMakeLists.txt b/CMakeLists.txt
index 96ba2961d3a..b2b8f1ce7d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -208,8 +208,6 @@ option(OMIT_HEAVY_DEBUG_SYMBOLS
     "Do not generate debugger info for heavy modules (ClickHouse functions and dictionaries, some contrib)"
     ${OMIT_HEAVY_DEBUG_SYMBOLS_DEFAULT})
 
-option(USE_DEBUG_HELPERS "Enable debug helpers" ${USE_DEBUG_HELPERS})
-
 option(BUILD_STANDALONE_KEEPER "Build keeper as small standalone binary" OFF)
 if (NOT BUILD_STANDALONE_KEEPER)
     option(CREATE_KEEPER_SYMLINK "Create symlink for clickhouse-keeper to main server binary" ON)
diff --git a/base/base/CMakeLists.txt b/base/base/CMakeLists.txt
index 27aa0bd6baf..159502c9735 100644
--- a/base/base/CMakeLists.txt
+++ b/base/base/CMakeLists.txt
@@ -34,15 +34,6 @@ set (SRCS
     throwError.cpp
 )
 
-if (USE_DEBUG_HELPERS)
-    get_target_property(MAGIC_ENUM_INCLUDE_DIR ch_contrib::magic_enum INTERFACE_INCLUDE_DIRECTORIES)
-    # CMake generator expression will do insane quoting when it encounters special character like quotes, spaces, etc.
-    # Prefixing "SHELL:" will force it to use the original text.
-    set (INCLUDE_DEBUG_HELPERS "SHELL:-I\"${MAGIC_ENUM_INCLUDE_DIR}\" -include \"${ClickHouse_SOURCE_DIR}/base/base/iostream_debug_helpers.h\"")
-    # Use generator expression as we don't want to pollute CMAKE_CXX_FLAGS, which will interfere with CMake check system.
-    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:${INCLUDE_DEBUG_HELPERS}>)
-endif ()
-
 add_library (common ${SRCS})
 
 if (WITH_COVERAGE)
diff --git a/base/base/iostream_debug_helpers.h b/base/base/iostream_debug_helpers.h
deleted file mode 100644
index b23d3d9794d..00000000000
--- a/base/base/iostream_debug_helpers.h
+++ /dev/null
@@ -1,187 +0,0 @@
-#pragma once
-
-#include "demangle.h"
-#include "getThreadId.h"
-#include <type_traits>
-#include <tuple>
-#include <iomanip>
-#include <iostream>
-#include <magic_enum.hpp>
-
-/** Usage:
-  *
-  * DUMP(variable...)
-  */
-
-
-template <typename Out, typename T>
-Out & dumpValue(Out &, T &&);
-
-
-/// Catch-all case.
-template <int priority, typename Out, typename T>
-requires(priority == -1)
-Out & dumpImpl(Out & out, T &&) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return out << "{...}";
-}
-
-/// An object, that could be output with operator <<.
-template <int priority, typename Out, typename T>
-requires(priority == 0)
-Out & dumpImpl(Out & out, T && x, std::decay_t<decltype(std::declval<Out &>() << std::declval<T>())> * = nullptr) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return out << x;
-}
-
-/// A pointer-like object.
-template <int priority, typename Out, typename T>
-requires(priority == 1
-    /// Protect from the case when operator * do effectively nothing (function pointer).
-    && !std::is_same_v<std::decay_t<T>, std::decay_t<decltype(*std::declval<T>())>>)
-Out & dumpImpl(Out & out, T && x, std::decay_t<decltype(*std::declval<T>())> * = nullptr) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    if (!x)
-        return out << "nullptr";
-    return dumpValue(out, *x);
-}
-
-/// Container.
-template <int priority, typename Out, typename T>
-requires(priority == 2)
-Out & dumpImpl(Out & out, T && x, std::decay_t<decltype(std::begin(std::declval<T>()))> * = nullptr) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    bool first = true;
-    out << "{";
-    for (const auto & elem : x)
-    {
-        if (first)
-            first = false;
-        else
-            out << ", ";
-        dumpValue(out, elem);
-    }
-    return out << "}";
-}
-
-
-template <int priority, typename Out, typename T>
-requires(priority == 3 && std::is_enum_v<std::decay_t<T>>)
-Out & dumpImpl(Out & out, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return out << magic_enum::enum_name(x);
-}
-
-/// string and const char * - output not as container or pointer.
-
-template <int priority, typename Out, typename T>
-requires(priority == 3 && (std::is_same_v<std::decay_t<T>, std::string> || std::is_same_v<std::decay_t<T>, const char *>))
-Out & dumpImpl(Out & out, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return out << std::quoted(x);
-}
-
-/// UInt8 - output as number, not char.
-
-template <int priority, typename Out, typename T>
-requires(priority == 3 && std::is_same_v<std::decay_t<T>, unsigned char>)
-Out & dumpImpl(Out & out, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return out << int(x);
-}
-
-
-/// Tuple, pair
-template <size_t N, typename Out, typename T>
-Out & dumpTupleImpl(Out & out, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    if constexpr (N == 0)
-        out << "{";
-    else
-        out << ", ";
-
-    dumpValue(out, std::get<N>(x));
-
-    if constexpr (N + 1 == std::tuple_size_v<std::decay_t<T>>)
-        out << "}";
-    else
-        dumpTupleImpl<N + 1>(out, x);
-
-    return out;
-}
-
-template <int priority, typename Out, typename T>
-requires(priority == 4)
-Out & dumpImpl(Out & out, T && x, std::decay_t<decltype(std::get<0>(std::declval<T>()))> * = nullptr) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return dumpTupleImpl<0>(out, x);
-}
-
-
-template <int priority, typename Out, typename T>
-Out & dumpDispatchPriorities(Out & out, T && x, std::decay_t<decltype(dumpImpl<priority>(std::declval<Out &>(), std::declval<T>()))> *) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return dumpImpl<priority>(out, x);
-}
-
-// NOLINTNEXTLINE(google-explicit-constructor)
-struct LowPriority { LowPriority(void *) {} };
-
-template <int priority, typename Out, typename T>
-Out & dumpDispatchPriorities(Out & out, T && x, LowPriority) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return dumpDispatchPriorities<priority - 1>(out, x, nullptr);
-}
-
-
-template <typename Out, typename T>
-Out & dumpValue(Out & out, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    return dumpDispatchPriorities<5>(out, x, nullptr);
-}
-
-
-template <typename Out, typename T>
-Out & dump(Out & out, const char * name, T && x) // NOLINT(cppcoreguidelines-missing-std-forward)
-{
-    // Dumping string literal, printing name and demangled type is irrelevant.
-    if constexpr (std::is_same_v<const char *, std::decay_t<std::remove_reference_t<T>>>)
-    {
-         const auto name_len = strlen(name);
-         const auto value_len = strlen(x);
-         // `name` is the same as quoted `x`
-         if (name_len > 2 && value_len > 0 && name[0] == '"' && name[name_len - 1] == '"'
-                 && strncmp(name + 1, x, std::min(value_len, name_len) - 1) == 0)
-             return out << x;
-    }
-
-    out << demangle(typeid(x).name()) << " " << name << " = ";
-    return dumpValue(out, x) << "; ";
-}
-
-#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
-
-#define DUMPVAR(VAR) ::dump(std::cerr, #VAR, (VAR));
-#define DUMPHEAD std::cerr << __FILE__ << ':' << __LINE__ << " [ " << getThreadId() << " ] ";
-#define DUMPTAIL std::cerr << '\n';
-
-#define DUMP1(V1) do { DUMPHEAD DUMPVAR(V1) DUMPTAIL } while(0)
-#define DUMP2(V1, V2) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPTAIL } while(0)
-#define DUMP3(V1, V2, V3) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPTAIL } while(0)
-#define DUMP4(V1, V2, V3, V4) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPTAIL } while(0)
-#define DUMP5(V1, V2, V3, V4, V5) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPVAR(V5) DUMPTAIL } while(0)
-#define DUMP6(V1, V2, V3, V4, V5, V6) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPVAR(V5) DUMPVAR(V6) DUMPTAIL } while(0)
-#define DUMP7(V1, V2, V3, V4, V5, V6, V7) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPVAR(V5) DUMPVAR(V6) DUMPVAR(V7) DUMPTAIL } while(0)
-#define DUMP8(V1, V2, V3, V4, V5, V6, V7, V8) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPVAR(V5) DUMPVAR(V6) DUMPVAR(V7) DUMPVAR(V8) DUMPTAIL } while(0)
-#define DUMP9(V1, V2, V3, V4, V5, V6, V7, V8, V9) do { DUMPHEAD DUMPVAR(V1) DUMPVAR(V2) DUMPVAR(V3) DUMPVAR(V4) DUMPVAR(V5) DUMPVAR(V6) DUMPVAR(V7) DUMPVAR(V8) DUMPVAR(V9) DUMPTAIL } while(0)
-
-/// https://groups.google.com/forum/#!searchin/kona-dev/variadic$20macro%7Csort:date/kona-dev/XMA-lDOqtlI/GCzdfZsD41sJ
-
-#define VA_NUM_ARGS_IMPL(x1, x2, x3, x4, x5, x6, x7, x8, x9, N, ...) N
-#define VA_NUM_ARGS(...) VA_NUM_ARGS_IMPL(__VA_ARGS__, 9, 8, 7, 6, 5, 4, 3, 2, 1)
-
-#define MAKE_VAR_MACRO_IMPL_CONCAT(PREFIX, NUM_ARGS) PREFIX ## NUM_ARGS
-#define MAKE_VAR_MACRO_IMPL(PREFIX, NUM_ARGS) MAKE_VAR_MACRO_IMPL_CONCAT(PREFIX, NUM_ARGS)
-#define MAKE_VAR_MACRO(PREFIX, ...) MAKE_VAR_MACRO_IMPL(PREFIX, VA_NUM_ARGS(__VA_ARGS__))
-
-#define DUMP(...) MAKE_VAR_MACRO(DUMP, __VA_ARGS__)(__VA_ARGS__)
diff --git a/base/base/tests/CMakeLists.txt b/base/base/tests/CMakeLists.txt
index 81db4f3622f..e69de29bb2d 100644
--- a/base/base/tests/CMakeLists.txt
+++ b/base/base/tests/CMakeLists.txt
@@ -1,2 +0,0 @@
-clickhouse_add_executable (dump_variable dump_variable.cpp)
-target_link_libraries (dump_variable PRIVATE clickhouse_common_io)
diff --git a/base/base/tests/dump_variable.cpp b/base/base/tests/dump_variable.cpp
deleted file mode 100644
index 9addc298ecb..00000000000
--- a/base/base/tests/dump_variable.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-#include <base/iostream_debug_helpers.h>
-
-#include <iostream>
-#include <memory>
-#include <vector>
-#include <map>
-#include <set>
-#include <tuple>
-#include <array>
-#include <utility>
-
-
-struct S1;
-struct S2 {};
-
-struct S3
-{
-    std::set<const char *> m1;
-};
-
-std::ostream & operator<<(std::ostream & stream, const S3 & what)
-{
-    stream << "S3 {m1=";
-    dumpValue(stream, what.m1) << "}";
-    return stream;
-}
-
-int main(int, char **)
-{
-    int x = 1;
-
-    DUMP(x);
-    DUMP(x, 1, &x);
-
-    DUMP(std::make_unique<int>(1));
-    DUMP(std::make_shared<int>(1));
-
-    std::vector<int> vec{1, 2, 3};
-    DUMP(vec);
-
-    auto pair = std::make_pair(1, 2);
-    DUMP(pair);
-
-    auto tuple = std::make_tuple(1, 2, 3);
-    DUMP(tuple);
-
-    std::map<int, std::string> map{{1, "hello"}, {2, "world"}};
-    DUMP(map);
-
-    std::initializer_list<const char *> list{"hello", "world"};
-    DUMP(list);
-
-    std::array<const char *, 2> arr{{"hello", "world"}};
-    DUMP(arr);
-
-    //DUMP([]{});
-
-    S1 * s = nullptr;
-    DUMP(s);
-
-    DUMP(S2());
-
-    std::set<const char *> variants = {"hello", "world"};
-    DUMP(variants);
-
-    S3 s3 {{"hello", "world"}};
-    DUMP(s3);
-
-    return 0;
-}
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2b5078111ee..290a7311448 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -22,15 +22,6 @@ include (configure_config.cmake)
 configure_file (Common/config.h.in ${CONFIG_INCLUDE_PATH}/config.h)
 configure_file (Common/config_version.cpp.in ${CONFIG_INCLUDE_PATH}/config_version.cpp)
 
-if (USE_DEBUG_HELPERS)
-    get_target_property(MAGIC_ENUM_INCLUDE_DIR ch_contrib::magic_enum INTERFACE_INCLUDE_DIRECTORIES)
-    # CMake generator expression will do insane quoting when it encounters special character like quotes, spaces, etc.
-    # Prefixing "SHELL:" will force it to use the original text.
-    set (INCLUDE_DEBUG_HELPERS "SHELL:-I\"${ClickHouse_SOURCE_DIR}/base\" -I\"${MAGIC_ENUM_INCLUDE_DIR}\" -include \"${ClickHouse_SOURCE_DIR}/src/Core/iostream_debug_helpers.h\"")
-    # Use generator expression as we don't want to pollute CMAKE_CXX_FLAGS, which will interfere with CMake check system.
-    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:${INCLUDE_DEBUG_HELPERS}>)
-endif ()
-
 # ClickHouse developers may use platform-dependent code under some macro (e.g. `#ifdef ENABLE_MULTITARGET`).
 # If turned ON, this option defines such macro.
 # See `src/Common/TargetSpecific.h`
diff --git a/src/Core/iostream_debug_helpers.cpp b/src/Core/iostream_debug_helpers.cpp
deleted file mode 100644
index 38e61ac4fca..00000000000
--- a/src/Core/iostream_debug_helpers.cpp
+++ /dev/null
@@ -1,149 +0,0 @@
-#include "iostream_debug_helpers.h"
-
-#include <iostream>
-#include <Client/Connection.h>
-#include <Core/Block.h>
-#include <Core/ColumnWithTypeAndName.h>
-#include <Core/Field.h>
-#include <Core/NamesAndTypes.h>
-#include <DataTypes/IDataType.h>
-#include <Functions/IFunction.h>
-#include <IO/WriteBufferFromOStream.h>
-#include <Interpreters/ExpressionAnalyzer.h>
-#include <Interpreters/ExpressionActions.h>
-#include <Parsers/IAST.h>
-#include <Storages/IStorage.h>
-#include <Common/COW.h>
-#include <Common/FieldVisitorDump.h>
-
-
-namespace DB
-{
-
-template <>
-std::ostream & operator<< <Field>(std::ostream & stream, const Field & what)
-{
-    stream << applyVisitor(FieldVisitorDump(), what);
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const NameAndTypePair & what)
-{
-    stream << "NameAndTypePair(name = " << what.name << ", type = " << what.type << ")";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const IDataType & what)
-{
-    stream << "IDataType(name = " << what.getName() << ", default = " << what.getDefault() << ")";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const IStorage & what)
-{
-    auto table_id = what.getStorageID();
-    stream << "IStorage(name = " << what.getName() << ", tableName = " << table_id.table_name << ") {"
-           << what.getInMemoryMetadataPtr()->getColumns().getAllPhysical().toString() << "}";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const TableLockHolder &)
-{
-    stream << "TableStructureReadLock()";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const IFunctionOverloadResolver & what)
-{
-    stream << "IFunction(name = " << what.getName() << ", variadic = " << what.isVariadic() << ", args = " << what.getNumberOfArguments()
-           << ")";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const Block & what)
-{
-    stream << "Block("
-           << "num_columns = " << what.columns() << "){" << what.dumpStructure() << "}";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const ColumnWithTypeAndName & what)
-{
-    stream << "ColumnWithTypeAndName(name = " << what.name << ", type = " << *what.type << ", column = ";
-    return dumpValue(stream, what.column) << ")";
-}
-
-std::ostream & operator<<(std::ostream & stream, const IColumn & what)
-{
-    stream << "IColumn(" << what.dumpStructure() << ")";
-    stream << "{";
-    for (size_t i = 0; i < what.size(); ++i)
-    {
-        if (i)
-            stream << ", ";
-        stream << applyVisitor(FieldVisitorDump(), what[i]);
-    }
-    stream << "}";
-
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const Packet & what)
-{
-    stream << "Packet("
-           << "type = " << what.type;
-    // types description: Core/Protocol.h
-    if (what.exception)
-        stream << "exception = " << what.exception.get();
-    // TODO: profile_info
-    stream << ") {" << what.block << "}";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const ExpressionActions & what)
-{
-    stream << "ExpressionActions(" << what.dumpActions() << ")";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const TreeRewriterResult & what)
-{
-    stream << "SyntaxAnalyzerResult{";
-    stream << "storage=" << what.storage << "; ";
-    if (!what.source_columns.empty())
-    {
-        stream << "source_columns=";
-        dumpValue(stream, what.source_columns);
-        stream << "; ";
-    }
-    if (!what.aliases.empty())
-    {
-        stream << "aliases=";
-        dumpValue(stream, what.aliases);
-        stream << "; ";
-    }
-    if (!what.array_join_result_to_source.empty())
-    {
-        stream << "array_join_result_to_source=";
-        dumpValue(stream, what.array_join_result_to_source);
-        stream << "; ";
-    }
-    if (!what.array_join_alias_to_name.empty())
-    {
-        stream << "array_join_alias_to_name=";
-        dumpValue(stream, what.array_join_alias_to_name);
-        stream << "; ";
-    }
-    if (!what.array_join_name_to_alias.empty())
-    {
-        stream << "array_join_name_to_alias=";
-        dumpValue(stream, what.array_join_name_to_alias);
-        stream << "; ";
-    }
-    stream << "rewrite_subqueries=" << what.rewrite_subqueries << "; ";
-    stream << "}";
-
-    return stream;
-}
-
-}
diff --git a/src/Core/iostream_debug_helpers.h b/src/Core/iostream_debug_helpers.h
deleted file mode 100644
index e40bf74583e..00000000000
--- a/src/Core/iostream_debug_helpers.h
+++ /dev/null
@@ -1,49 +0,0 @@
-#pragma once
-#include <iostream>
-
-namespace DB
-{
-
-// Use template to disable implicit casting for certain overloaded types such as Field, which leads
-// to overload resolution ambiguity.
-class Field;
-template <typename T>
-requires std::is_same_v<T, Field>
-std::ostream & operator<<(std::ostream & stream, const T & what);
-
-struct NameAndTypePair;
-std::ostream & operator<<(std::ostream & stream, const NameAndTypePair & what);
-
-class IDataType;
-std::ostream & operator<<(std::ostream & stream, const IDataType & what);
-
-class IStorage;
-std::ostream & operator<<(std::ostream & stream, const IStorage & what);
-
-class IFunctionOverloadResolver;
-std::ostream & operator<<(std::ostream & stream, const IFunctionOverloadResolver & what);
-
-class IFunctionBase;
-std::ostream & operator<<(std::ostream & stream, const IFunctionBase & what);
-
-class Block;
-std::ostream & operator<<(std::ostream & stream, const Block & what);
-
-struct ColumnWithTypeAndName;
-std::ostream & operator<<(std::ostream & stream, const ColumnWithTypeAndName & what);
-
-class IColumn;
-std::ostream & operator<<(std::ostream & stream, const IColumn & what);
-
-struct Packet;
-std::ostream & operator<<(std::ostream & stream, const Packet & what);
-
-class ExpressionActions;
-std::ostream & operator<<(std::ostream & stream, const ExpressionActions & what);
-
-struct TreeRewriterResult;
-std::ostream & operator<<(std::ostream & stream, const TreeRewriterResult & what);
-}
-
-/// some operator<< should be declared before operator<<(... std::shared_ptr<>)
-#include <base/iostream_debug_helpers.h>
diff --git a/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp b/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp
index bf5337c89da..0d05fa7dcf8 100644
--- a/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp
+++ b/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp
@@ -1,4 +1,3 @@
-#include <Columns/IColumn.h>
 #include <Core/Field.h>
 #include <DataTypes/DataTypeFactory.h>
 #include <DataTypes/IDataType.h>
@@ -10,8 +9,6 @@
 #include <string>
 #include <vector>
 
-#include <Core/iostream_debug_helpers.h>
-
 
 template <typename T>
 inline std::ostream& operator<<(std::ostream & ostr, const std::vector<T> & v)
@@ -63,7 +60,7 @@ TEST_P(ParseDataTypeTest, parseStringValue)
         data_type->getDefaultSerialization()->deserializeWholeText(*col, buffer, FormatSettings{});
     }
 
-    ASSERT_EQ(p.expected_values.size(), col->size()) << "Actual items: " << *col;
+    ASSERT_EQ(p.expected_values.size(), col->size());
     for (size_t i = 0; i < col->size(); ++i)
     {
         ASSERT_EQ(p.expected_values[i], (*col)[i]);
diff --git a/src/Functions/keyvaluepair/tests/gtest_extractKeyValuePairs.cpp b/src/Functions/keyvaluepair/tests/gtest_extractKeyValuePairs.cpp
index 55a08023cbd..88dc287be16 100644
--- a/src/Functions/keyvaluepair/tests/gtest_extractKeyValuePairs.cpp
+++ b/src/Functions/keyvaluepair/tests/gtest_extractKeyValuePairs.cpp
@@ -11,7 +11,6 @@
 
 #include <gtest/gtest.h>
 #include <initializer_list>
-#include <Core/iostream_debug_helpers.h>
 
 
 namespace
@@ -41,23 +40,6 @@ std::string PrintMap(const auto & keys, const auto & values)
     return std::move(buff.str());
 }
 
-template <typename T>
-struct Dump
-{
-    const T & value;
-
-    friend std::ostream & operator<<(std::ostream & ostr, const Dump & d)
-    {
-        return dumpValue(ostr, d.value);
-    }
-};
-
-template <typename T>
-auto print_with_dump(const T & value)
-{
-    return Dump<T>{value};
-}
-
 }
 
 struct KeyValuePairExtractorTestParam
@@ -82,9 +64,7 @@ TEST_P(extractKVPairKeyValuePairExtractorTest, Match)
     auto values = ColumnString::create();
 
     auto pairs_found = kv_parser->extract(input, keys, values);
-    ASSERT_EQ(expected.size(), pairs_found)
-            << "\texpected: " << print_with_dump(expected) << "\n"
-            << "\tactual  : " << print_with_dump(*ToColumnMap(keys, values));
+    ASSERT_EQ(expected.size(), pairs_found);
 
     size_t i = 0;
     for (const auto & expected_kv : expected)
diff --git a/src/Interpreters/tests/gtest_convertFieldToType.cpp b/src/Interpreters/tests/gtest_convertFieldToType.cpp
index ea1c5c43a25..c8a9d5aa2c0 100644
--- a/src/Interpreters/tests/gtest_convertFieldToType.cpp
+++ b/src/Interpreters/tests/gtest_convertFieldToType.cpp
@@ -2,7 +2,6 @@
 #include <limits>
 #include <ostream>
 #include <Core/Field.h>
-#include <Core/iostream_debug_helpers.h>
 #include <Interpreters/convertFieldToType.h>
 #include <DataTypes/DataTypeFactory.h>
 
@@ -24,9 +23,7 @@ std::ostream & operator << (std::ostream & ostr, const ConvertFieldToTypeTestPar
 {
     return ostr << "{"
             << "\n\tfrom_type  : " << params.from_type
-            << "\n\tfrom_value : " << params.from_value
             << "\n\tto_type    : " << params.to_type
-            << "\n\texpected   : " << (params.expected_value ? *params.expected_value : Field())
             << "\n}";
 }
 
diff --git a/src/Parsers/CMakeLists.txt b/src/Parsers/CMakeLists.txt
index d5653da7b3a..278c1e00e9e 100644
--- a/src/Parsers/CMakeLists.txt
+++ b/src/Parsers/CMakeLists.txt
@@ -12,14 +12,6 @@ if (TARGET ch_rust::prql)
     target_link_libraries(clickhouse_parsers PRIVATE ch_rust::prql)
 endif ()
 
-if (USE_DEBUG_HELPERS)
-    # CMake generator expression will do insane quoting when it encounters special character like quotes, spaces, etc.
-    # Prefixing "SHELL:" will force it to use the original text.
-    set (INCLUDE_DEBUG_HELPERS "SHELL:-I\"${ClickHouse_SOURCE_DIR}/base\" -include \"${ClickHouse_SOURCE_DIR}/src/Parsers/iostream_debug_helpers.h\"")
-    # Use generator expression as we don't want to pollute CMAKE_CXX_FLAGS, which will interfere with CMake check system.
-    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:${INCLUDE_DEBUG_HELPERS}>)
-endif ()
-
 if(ENABLE_EXAMPLES)
     add_subdirectory(examples)
 endif()
diff --git a/src/Parsers/iostream_debug_helpers.cpp b/src/Parsers/iostream_debug_helpers.cpp
deleted file mode 100644
index b74d337b22d..00000000000
--- a/src/Parsers/iostream_debug_helpers.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-#include "iostream_debug_helpers.h"
-#include <Parsers/IAST.h>
-#include <Parsers/IParser.h>
-#include <Parsers/Lexer.h>
-#include <Parsers/TokenIterator.h>
-#include <IO/WriteBufferFromOStream.h>
-#include <IO/Operators.h>
-
-namespace DB
-{
-
-std::ostream & operator<<(std::ostream & stream, const Token & what)
-{
-    stream << "Token (type="<< static_cast<int>(what.type) <<"){"<< std::string{what.begin, what.end} << "}";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const Expected & what)
-{
-    stream << "Expected {variants=";
-    dumpValue(stream, what.variants)
-       << "; max_parsed_pos=" << what.max_parsed_pos << "}";
-    return stream;
-}
-
-std::ostream & operator<<(std::ostream & stream, const IAST & what)
-{
-    WriteBufferFromOStream buf(stream, 4096);
-    buf << "IAST{";
-    what.dumpTree(buf);
-    buf << "}";
-    return stream;
-}
-
-}
diff --git a/src/Parsers/iostream_debug_helpers.h b/src/Parsers/iostream_debug_helpers.h
deleted file mode 100644
index 39f52ebcbc2..00000000000
--- a/src/Parsers/iostream_debug_helpers.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#pragma once
-#include <iostream>
-
-namespace DB
-{
-struct Token;
-std::ostream & operator<<(std::ostream & stream, const Token & what);
-
-struct Expected;
-std::ostream & operator<<(std::ostream & stream, const Expected & what);
-
-class IAST;
-std::ostream & operator<<(std::ostream & stream, const IAST & what);
-
-}
-
-#include <Core/iostream_debug_helpers.h>
diff --git a/utils/check-style/check-style b/utils/check-style/check-style
index 23e8b6b2bc4..5c05907e9dd 100755
--- a/utils/check-style/check-style
+++ b/utils/check-style/check-style
@@ -290,8 +290,6 @@ std_cerr_cout_excludes=(
     /examples/
     /tests/
     _fuzzer
-    # DUMP()
-    base/base/iostream_debug_helpers.h
     # OK
     src/Common/ProgressIndication.cpp
     # only under #ifdef DBMS_HASH_MAP_DEBUG_RESIZES, that is used only in tests