diff --git a/c++/greptime/v1/common.pb.cc b/c++/greptime/v1/common.pb.cc
index d8b73511..3dcbcd9a 100644
--- a/c++/greptime/v1/common.pb.cc
+++ b/c++/greptime/v1/common.pb.cc
@@ -299,7 +299,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 }  // namespace v1
 }  // namespace greptime
 static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fcommon_2eproto[20];
-static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fcommon_2eproto[2];
+static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fcommon_2eproto[3];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fcommon_2eproto = nullptr;
 
 const uint32_t TableStruct_greptime_2fv1_2fcommon_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
@@ -447,6 +447,7 @@ const uint32_t TableStruct_greptime_2fv1_2fcommon_2eproto::offsets[] PROTOBUF_SE
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
   ::_pbi::kInvalidFieldOffsetTag,
+  ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::ColumnDataTypeExtension, _impl_.type_ext_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::DecimalTypeExtension, _internal_metadata_),
@@ -492,9 +493,9 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 120, -1, -1, sizeof(::greptime::v1::IntervalMonthDayNano)},
   { 129, -1, -1, sizeof(::greptime::v1::Decimal128)},
   { 137, -1, -1, sizeof(::greptime::v1::ColumnDataTypeExtension)},
-  { 145, -1, -1, sizeof(::greptime::v1::DecimalTypeExtension)},
-  { 153, 161, -1, sizeof(::greptime::v1::ColumnOptions_OptionsEntry_DoNotUse)},
-  { 163, -1, -1, sizeof(::greptime::v1::ColumnOptions)},
+  { 146, -1, -1, sizeof(::greptime::v1::DecimalTypeExtension)},
+  { 154, 162, -1, sizeof(::greptime::v1::ColumnOptions_OptionsEntry_DoNotUse)},
+  { 164, -1, -1, sizeof(::greptime::v1::ColumnOptions)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -550,33 +551,35 @@ const char descriptor_table_protodef_greptime_2fv1_2fcommon_2eproto[] PROTOBUF_S
   "2\024.greptime.v1.Metrics\"I\n\024IntervalMonthD"
   "ayNano\022\016\n\006months\030\001 \001(\005\022\014\n\004days\030\002 \001(\005\022\023\n\013"
   "nanoseconds\030\003 \001(\003\"$\n\nDecimal128\022\n\n\002hi\030\001 "
-  "\001(\003\022\n\n\002lo\030\002 \001(\003\"`\n\027ColumnDataTypeExtensi"
-  "on\0229\n\014decimal_type\030\001 \001(\0132!.greptime.v1.D"
-  "ecimalTypeExtensionH\000B\n\n\010type_ext\"8\n\024Dec"
-  "imalTypeExtension\022\021\n\tprecision\030\001 \001(\005\022\r\n\005"
-  "scale\030\002 \001(\005\"y\n\rColumnOptions\0228\n\007options\030"
-  "\001 \003(\0132\'.greptime.v1.ColumnOptions.Option"
-  "sEntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005v"
-  "alue\030\002 \001(\t:\0028\001*1\n\014SemanticType\022\007\n\003TAG\020\000\022"
-  "\t\n\005FIELD\020\001\022\r\n\tTIMESTAMP\020\002*\326\003\n\016ColumnData"
-  "Type\022\013\n\007BOOLEAN\020\000\022\010\n\004INT8\020\001\022\t\n\005INT16\020\002\022\t"
-  "\n\005INT32\020\003\022\t\n\005INT64\020\004\022\t\n\005UINT8\020\005\022\n\n\006UINT1"
-  "6\020\006\022\n\n\006UINT32\020\007\022\n\n\006UINT64\020\010\022\013\n\007FLOAT32\020\t"
-  "\022\013\n\007FLOAT64\020\n\022\n\n\006BINARY\020\013\022\n\n\006STRING\020\014\022\010\n"
-  "\004DATE\020\r\022\014\n\010DATETIME\020\016\022\024\n\020TIMESTAMP_SECON"
-  "D\020\017\022\031\n\025TIMESTAMP_MILLISECOND\020\020\022\031\n\025TIMEST"
-  "AMP_MICROSECOND\020\021\022\030\n\024TIMESTAMP_NANOSECON"
-  "D\020\022\022\017\n\013TIME_SECOND\020\023\022\024\n\020TIME_MILLISECOND"
-  "\020\024\022\024\n\020TIME_MICROSECOND\020\025\022\023\n\017TIME_NANOSEC"
-  "OND\020\026\022\027\n\023INTERVAL_YEAR_MONTH\020\027\022\025\n\021INTERV"
-  "AL_DAY_TIME\020\030\022\033\n\027INTERVAL_MONTH_DAY_NANO"
-  "\020\031\022\016\n\nDECIMAL128\020\036BO\n\016io.greptime.v1B\006Co"
-  "mmonZ5github.com/GreptimeTeam/greptime-p"
-  "roto/go/greptime/v1b\006proto3"
+  "\001(\003\022\n\n\002lo\030\002 \001(\003\"\225\001\n\027ColumnDataTypeExtens"
+  "ion\0229\n\014decimal_type\030\001 \001(\0132!.greptime.v1."
+  "DecimalTypeExtensionH\000\0223\n\tjson_type\030\002 \001("
+  "\0162\036.greptime.v1.JsonTypeExtensionH\000B\n\n\010t"
+  "ype_ext\"8\n\024DecimalTypeExtension\022\021\n\tpreci"
+  "sion\030\001 \001(\005\022\r\n\005scale\030\002 \001(\005\"y\n\rColumnOptio"
+  "ns\0228\n\007options\030\001 \003(\0132\'.greptime.v1.Column"
+  "Options.OptionsEntry\032.\n\014OptionsEntry\022\013\n\003"
+  "key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001*1\n\014Semantic"
+  "Type\022\007\n\003TAG\020\000\022\t\n\005FIELD\020\001\022\r\n\tTIMESTAMP\020\002*"
+  "\326\003\n\016ColumnDataType\022\013\n\007BOOLEAN\020\000\022\010\n\004INT8\020"
+  "\001\022\t\n\005INT16\020\002\022\t\n\005INT32\020\003\022\t\n\005INT64\020\004\022\t\n\005UI"
+  "NT8\020\005\022\n\n\006UINT16\020\006\022\n\n\006UINT32\020\007\022\n\n\006UINT64\020"
+  "\010\022\013\n\007FLOAT32\020\t\022\013\n\007FLOAT64\020\n\022\n\n\006BINARY\020\013\022"
+  "\n\n\006STRING\020\014\022\010\n\004DATE\020\r\022\014\n\010DATETIME\020\016\022\024\n\020T"
+  "IMESTAMP_SECOND\020\017\022\031\n\025TIMESTAMP_MILLISECO"
+  "ND\020\020\022\031\n\025TIMESTAMP_MICROSECOND\020\021\022\030\n\024TIMES"
+  "TAMP_NANOSECOND\020\022\022\017\n\013TIME_SECOND\020\023\022\024\n\020TI"
+  "ME_MILLISECOND\020\024\022\024\n\020TIME_MICROSECOND\020\025\022\023"
+  "\n\017TIME_NANOSECOND\020\026\022\027\n\023INTERVAL_YEAR_MON"
+  "TH\020\027\022\025\n\021INTERVAL_DAY_TIME\020\030\022\033\n\027INTERVAL_"
+  "MONTH_DAY_NANO\020\031\022\016\n\nDECIMAL128\020\036*$\n\021Json"
+  "TypeExtension\022\017\n\013JSON_BINARY\020\000BO\n\016io.gre"
+  "ptime.v1B\006CommonZ5github.com/GreptimeTea"
+  "m/greptime-proto/go/greptime/v1b\006proto3"
   ;
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fcommon_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fcommon_2eproto = {
-    false, false, 2067, descriptor_table_protodef_greptime_2fv1_2fcommon_2eproto,
+    false, false, 2159, descriptor_table_protodef_greptime_2fv1_2fcommon_2eproto,
     "greptime/v1/common.proto",
     &descriptor_table_greptime_2fv1_2fcommon_2eproto_once, nullptr, 0, 20,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fcommon_2eproto::offsets,
@@ -645,6 +648,19 @@ bool ColumnDataType_IsValid(int value) {
   }
 }
 
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* JsonTypeExtension_descriptor() {
+  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_greptime_2fv1_2fcommon_2eproto);
+  return file_level_enum_descriptors_greptime_2fv1_2fcommon_2eproto[2];
+}
+bool JsonTypeExtension_IsValid(int value) {
+  switch (value) {
+    case 0:
+      return true;
+    default:
+      return false;
+  }
+}
+
 
 // ===================================================================
 
@@ -4309,6 +4325,10 @@ ColumnDataTypeExtension::ColumnDataTypeExtension(const ColumnDataTypeExtension&
           from._internal_decimal_type());
       break;
     }
+    case kJsonType: {
+      _this->_internal_set_json_type(from._internal_json_type());
+      break;
+    }
     case TYPE_EXT_NOT_SET: {
       break;
     }
@@ -4357,6 +4377,10 @@ void ColumnDataTypeExtension::clear_type_ext() {
       }
       break;
     }
+    case kJsonType: {
+      // No need to clear
+      break;
+    }
     case TYPE_EXT_NOT_SET: {
       break;
     }
@@ -4389,6 +4413,15 @@ const char* ColumnDataTypeExtension::_InternalParse(const char* ptr, ::_pbi::Par
         } else
           goto handle_unusual;
         continue;
+      // .greptime.v1.JsonTypeExtension json_type = 2;
+      case 2:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 16)) {
+          uint64_t val = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+          _internal_set_json_type(static_cast<::greptime::v1::JsonTypeExtension>(val));
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -4425,6 +4458,13 @@ uint8_t* ColumnDataTypeExtension::_InternalSerialize(
         _Internal::decimal_type(this).GetCachedSize(), target, stream);
   }
 
+  // .greptime.v1.JsonTypeExtension json_type = 2;
+  if (_internal_has_json_type()) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteEnumToArray(
+      2, this->_internal_json_type(), target);
+  }
+
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
@@ -4449,6 +4489,12 @@ size_t ColumnDataTypeExtension::ByteSizeLong() const {
           *_impl_.type_ext_.decimal_type_);
       break;
     }
+    // .greptime.v1.JsonTypeExtension json_type = 2;
+    case kJsonType: {
+      total_size += 1 +
+        ::_pbi::WireFormatLite::EnumSize(this->_internal_json_type());
+      break;
+    }
     case TYPE_EXT_NOT_SET: {
       break;
     }
@@ -4477,6 +4523,10 @@ void ColumnDataTypeExtension::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg
           from._internal_decimal_type());
       break;
     }
+    case kJsonType: {
+      _this->_internal_set_json_type(from._internal_json_type());
+      break;
+    }
     case TYPE_EXT_NOT_SET: {
       break;
     }
diff --git a/c++/greptime/v1/common.pb.h b/c++/greptime/v1/common.pb.h
index ded265d5..f54d13f5 100644
--- a/c++/greptime/v1/common.pb.h
+++ b/c++/greptime/v1/common.pb.h
@@ -213,6 +213,30 @@ inline bool ColumnDataType_Parse(
   return ::PROTOBUF_NAMESPACE_ID::internal::ParseNamedEnum<ColumnDataType>(
     ColumnDataType_descriptor(), name, value);
 }
+enum JsonTypeExtension : int {
+  JSON_BINARY = 0,
+  JsonTypeExtension_INT_MIN_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::min(),
+  JsonTypeExtension_INT_MAX_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::max()
+};
+bool JsonTypeExtension_IsValid(int value);
+constexpr JsonTypeExtension JsonTypeExtension_MIN = JSON_BINARY;
+constexpr JsonTypeExtension JsonTypeExtension_MAX = JSON_BINARY;
+constexpr int JsonTypeExtension_ARRAYSIZE = JsonTypeExtension_MAX + 1;
+
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* JsonTypeExtension_descriptor();
+template<typename T>
+inline const std::string& JsonTypeExtension_Name(T enum_t_value) {
+  static_assert(::std::is_same<T, JsonTypeExtension>::value ||
+    ::std::is_integral<T>::value,
+    "Incorrect type passed to function JsonTypeExtension_Name.");
+  return ::PROTOBUF_NAMESPACE_ID::internal::NameOfEnum(
+    JsonTypeExtension_descriptor(), enum_t_value);
+}
+inline bool JsonTypeExtension_Parse(
+    ::PROTOBUF_NAMESPACE_ID::ConstStringParam name, JsonTypeExtension* value) {
+  return ::PROTOBUF_NAMESPACE_ID::internal::ParseNamedEnum<JsonTypeExtension>(
+    JsonTypeExtension_descriptor(), name, value);
+}
 // ===================================================================
 
 class QueryContext_ExtensionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<QueryContext_ExtensionsEntry_DoNotUse, 
@@ -2764,6 +2788,7 @@ class ColumnDataTypeExtension final :
   }
   enum TypeExtCase {
     kDecimalType = 1,
+    kJsonType = 2,
     TYPE_EXT_NOT_SET = 0,
   };
 
@@ -2846,6 +2871,7 @@ class ColumnDataTypeExtension final :
 
   enum : int {
     kDecimalTypeFieldNumber = 1,
+    kJsonTypeFieldNumber = 2,
   };
   // .greptime.v1.DecimalTypeExtension decimal_type = 1;
   bool has_decimal_type() const;
@@ -2865,12 +2891,26 @@ class ColumnDataTypeExtension final :
       ::greptime::v1::DecimalTypeExtension* decimal_type);
   ::greptime::v1::DecimalTypeExtension* unsafe_arena_release_decimal_type();
 
+  // .greptime.v1.JsonTypeExtension json_type = 2;
+  bool has_json_type() const;
+  private:
+  bool _internal_has_json_type() const;
+  public:
+  void clear_json_type();
+  ::greptime::v1::JsonTypeExtension json_type() const;
+  void set_json_type(::greptime::v1::JsonTypeExtension value);
+  private:
+  ::greptime::v1::JsonTypeExtension _internal_json_type() const;
+  void _internal_set_json_type(::greptime::v1::JsonTypeExtension value);
+  public:
+
   void clear_type_ext();
   TypeExtCase type_ext_case() const;
   // @@protoc_insertion_point(class_scope:greptime.v1.ColumnDataTypeExtension)
  private:
   class _Internal;
   void set_has_decimal_type();
+  void set_has_json_type();
 
   inline bool has_type_ext() const;
   inline void clear_has_type_ext();
@@ -2883,6 +2923,7 @@ class ColumnDataTypeExtension final :
       constexpr TypeExtUnion() : _constinit_{} {}
         ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized _constinit_;
       ::greptime::v1::DecimalTypeExtension* decimal_type_;
+      int json_type_;
     } type_ext_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -4891,6 +4932,44 @@ inline ::greptime::v1::DecimalTypeExtension* ColumnDataTypeExtension::mutable_de
   return _msg;
 }
 
+// .greptime.v1.JsonTypeExtension json_type = 2;
+inline bool ColumnDataTypeExtension::_internal_has_json_type() const {
+  return type_ext_case() == kJsonType;
+}
+inline bool ColumnDataTypeExtension::has_json_type() const {
+  return _internal_has_json_type();
+}
+inline void ColumnDataTypeExtension::set_has_json_type() {
+  _impl_._oneof_case_[0] = kJsonType;
+}
+inline void ColumnDataTypeExtension::clear_json_type() {
+  if (_internal_has_json_type()) {
+    _impl_.type_ext_.json_type_ = 0;
+    clear_has_type_ext();
+  }
+}
+inline ::greptime::v1::JsonTypeExtension ColumnDataTypeExtension::_internal_json_type() const {
+  if (_internal_has_json_type()) {
+    return static_cast< ::greptime::v1::JsonTypeExtension >(_impl_.type_ext_.json_type_);
+  }
+  return static_cast< ::greptime::v1::JsonTypeExtension >(0);
+}
+inline ::greptime::v1::JsonTypeExtension ColumnDataTypeExtension::json_type() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.ColumnDataTypeExtension.json_type)
+  return _internal_json_type();
+}
+inline void ColumnDataTypeExtension::_internal_set_json_type(::greptime::v1::JsonTypeExtension value) {
+  if (!_internal_has_json_type()) {
+    clear_type_ext();
+    set_has_json_type();
+  }
+  _impl_.type_ext_.json_type_ = value;
+}
+inline void ColumnDataTypeExtension::set_json_type(::greptime::v1::JsonTypeExtension value) {
+  _internal_set_json_type(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.ColumnDataTypeExtension.json_type)
+}
+
 inline bool ColumnDataTypeExtension::has_type_ext() const {
   return type_ext_case() != TYPE_EXT_NOT_SET;
 }
@@ -5038,6 +5117,11 @@ template <>
 inline const EnumDescriptor* GetEnumDescriptor< ::greptime::v1::ColumnDataType>() {
   return ::greptime::v1::ColumnDataType_descriptor();
 }
+template <> struct is_proto_enum< ::greptime::v1::JsonTypeExtension> : ::std::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor< ::greptime::v1::JsonTypeExtension>() {
+  return ::greptime::v1::JsonTypeExtension_descriptor();
+}
 
 PROTOBUF_NAMESPACE_CLOSE
 
diff --git a/go/greptime/v1/common.pb.go b/go/greptime/v1/common.pb.go
index 3dd34491..269610ea 100644
--- a/go/greptime/v1/common.pb.go
+++ b/go/greptime/v1/common.pb.go
@@ -204,6 +204,49 @@ func (ColumnDataType) EnumDescriptor() ([]byte, []int) {
 	return file_greptime_v1_common_proto_rawDescGZIP(), []int{1}
 }
 
+type JsonTypeExtension int32
+
+const (
+	JsonTypeExtension_JSON_BINARY JsonTypeExtension = 0
+)
+
+// Enum value maps for JsonTypeExtension.
+var (
+	JsonTypeExtension_name = map[int32]string{
+		0: "JSON_BINARY",
+	}
+	JsonTypeExtension_value = map[string]int32{
+		"JSON_BINARY": 0,
+	}
+)
+
+func (x JsonTypeExtension) Enum() *JsonTypeExtension {
+	p := new(JsonTypeExtension)
+	*p = x
+	return p
+}
+
+func (x JsonTypeExtension) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (JsonTypeExtension) Descriptor() protoreflect.EnumDescriptor {
+	return file_greptime_v1_common_proto_enumTypes[2].Descriptor()
+}
+
+func (JsonTypeExtension) Type() protoreflect.EnumType {
+	return &file_greptime_v1_common_proto_enumTypes[2]
+}
+
+func (x JsonTypeExtension) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use JsonTypeExtension.Descriptor instead.
+func (JsonTypeExtension) EnumDescriptor() ([]byte, []int) {
+	return file_greptime_v1_common_proto_rawDescGZIP(), []int{2}
+}
+
 type QueryContext struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1050,6 +1093,7 @@ type ColumnDataTypeExtension struct {
 	// Types that are assignable to TypeExt:
 	//
 	//	*ColumnDataTypeExtension_DecimalType
+	//	*ColumnDataTypeExtension_JsonType
 	TypeExt isColumnDataTypeExtension_TypeExt `protobuf_oneof:"type_ext"`
 }
 
@@ -1099,6 +1143,13 @@ func (x *ColumnDataTypeExtension) GetDecimalType() *DecimalTypeExtension {
 	return nil
 }
 
+func (x *ColumnDataTypeExtension) GetJsonType() JsonTypeExtension {
+	if x, ok := x.GetTypeExt().(*ColumnDataTypeExtension_JsonType); ok {
+		return x.JsonType
+	}
+	return JsonTypeExtension_JSON_BINARY
+}
+
 type isColumnDataTypeExtension_TypeExt interface {
 	isColumnDataTypeExtension_TypeExt()
 }
@@ -1107,8 +1158,15 @@ type ColumnDataTypeExtension_DecimalType struct {
 	DecimalType *DecimalTypeExtension `protobuf:"bytes,1,opt,name=decimal_type,json=decimalType,proto3,oneof"`
 }
 
+type ColumnDataTypeExtension_JsonType struct {
+	// Marks the binary column in proto is actually a JSON column.
+	JsonType JsonTypeExtension `protobuf:"varint,2,opt,name=json_type,json=jsonType,proto3,enum=greptime.v1.JsonTypeExtension,oneof"`
+}
+
 func (*ColumnDataTypeExtension_DecimalType) isColumnDataTypeExtension_TypeExt() {}
 
+func (*ColumnDataTypeExtension_JsonType) isColumnDataTypeExtension_TypeExt() {}
+
 type DecimalTypeExtension struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1329,13 +1387,17 @@ var file_greptime_v1_common_proto_rawDesc = []byte{
 	0x0b, 0x6e, 0x61, 0x6e, 0x6f, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x73, 0x22, 0x2c, 0x0a, 0x0a,
 	0x44, 0x65, 0x63, 0x69, 0x6d, 0x61, 0x6c, 0x31, 0x32, 0x38, 0x12, 0x0e, 0x0a, 0x02, 0x68, 0x69,
 	0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x68, 0x69, 0x12, 0x0e, 0x0a, 0x02, 0x6c, 0x6f,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x6c, 0x6f, 0x22, 0x6d, 0x0a, 0x17, 0x43, 0x6f,
-	0x6c, 0x75, 0x6d, 0x6e, 0x44, 0x61, 0x74, 0x61, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74, 0x65,
-	0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x46, 0x0a, 0x0c, 0x64, 0x65, 0x63, 0x69, 0x6d, 0x61, 0x6c,
-	0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x67, 0x72,
-	0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x44, 0x65, 0x63, 0x69, 0x6d, 0x61,
-	0x6c, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x48, 0x00,
-	0x52, 0x0b, 0x64, 0x65, 0x63, 0x69, 0x6d, 0x61, 0x6c, 0x54, 0x79, 0x70, 0x65, 0x42, 0x0a, 0x0a,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x6c, 0x6f, 0x22, 0xac, 0x01, 0x0a, 0x17, 0x43,
+	0x6f, 0x6c, 0x75, 0x6d, 0x6e, 0x44, 0x61, 0x74, 0x61, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74,
+	0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x46, 0x0a, 0x0c, 0x64, 0x65, 0x63, 0x69, 0x6d, 0x61,
+	0x6c, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x67,
+	0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x44, 0x65, 0x63, 0x69, 0x6d,
+	0x61, 0x6c, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x48,
+	0x00, 0x52, 0x0b, 0x64, 0x65, 0x63, 0x69, 0x6d, 0x61, 0x6c, 0x54, 0x79, 0x70, 0x65, 0x12, 0x3d,
+	0x0a, 0x09, 0x6a, 0x73, 0x6f, 0x6e, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28,
+	0x0e, 0x32, 0x1e, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e,
+	0x4a, 0x73, 0x6f, 0x6e, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x6f,
+	0x6e, 0x48, 0x00, 0x52, 0x08, 0x6a, 0x73, 0x6f, 0x6e, 0x54, 0x79, 0x70, 0x65, 0x42, 0x0a, 0x0a,
 	0x08, 0x74, 0x79, 0x70, 0x65, 0x5f, 0x65, 0x78, 0x74, 0x22, 0x4a, 0x0a, 0x14, 0x44, 0x65, 0x63,
 	0x69, 0x6d, 0x61, 0x6c, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x6f,
 	0x6e, 0x12, 0x1c, 0x0a, 0x09, 0x70, 0x72, 0x65, 0x63, 0x69, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x01,
@@ -1383,12 +1445,15 @@ var file_greptime_v1_common_proto_rawDesc = []byte{
 	0x49, 0x4d, 0x45, 0x10, 0x18, 0x12, 0x1b, 0x0a, 0x17, 0x49, 0x4e, 0x54, 0x45, 0x52, 0x56, 0x41,
 	0x4c, 0x5f, 0x4d, 0x4f, 0x4e, 0x54, 0x48, 0x5f, 0x44, 0x41, 0x59, 0x5f, 0x4e, 0x41, 0x4e, 0x4f,
 	0x10, 0x19, 0x12, 0x0e, 0x0a, 0x0a, 0x44, 0x45, 0x43, 0x49, 0x4d, 0x41, 0x4c, 0x31, 0x32, 0x38,
-	0x10, 0x1e, 0x42, 0x4f, 0x0a, 0x0e, 0x69, 0x6f, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d,
-	0x65, 0x2e, 0x76, 0x31, 0x42, 0x06, 0x43, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x5a, 0x35, 0x67, 0x69,
-	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x47, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d,
-	0x65, 0x54, 0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65,
-	0x2f, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x10, 0x1e, 0x2a, 0x24, 0x0a, 0x11, 0x4a, 0x73, 0x6f, 0x6e, 0x54, 0x79, 0x70, 0x65, 0x45, 0x78,
+	0x74, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x0f, 0x0a, 0x0b, 0x4a, 0x53, 0x4f, 0x4e, 0x5f,
+	0x42, 0x49, 0x4e, 0x41, 0x52, 0x59, 0x10, 0x00, 0x42, 0x4f, 0x0a, 0x0e, 0x69, 0x6f, 0x2e, 0x67,
+	0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x42, 0x06, 0x43, 0x6f, 0x6d, 0x6d,
+	0x6f, 0x6e, 0x5a, 0x35, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x47,
+	0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x54, 0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65, 0x70,
+	0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67, 0x72,
+	0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -1403,48 +1468,50 @@ func file_greptime_v1_common_proto_rawDescGZIP() []byte {
 	return file_greptime_v1_common_proto_rawDescData
 }
 
-var file_greptime_v1_common_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_greptime_v1_common_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
 var file_greptime_v1_common_proto_msgTypes = make([]protoimpl.MessageInfo, 20)
 var file_greptime_v1_common_proto_goTypes = []interface{}{
 	(SemanticType)(0),               // 0: greptime.v1.SemanticType
 	(ColumnDataType)(0),             // 1: greptime.v1.ColumnDataType
-	(*QueryContext)(nil),            // 2: greptime.v1.QueryContext
-	(*RequestHeader)(nil),           // 3: greptime.v1.RequestHeader
-	(*ResponseHeader)(nil),          // 4: greptime.v1.ResponseHeader
-	(*Status)(nil),                  // 5: greptime.v1.Status
-	(*AuthHeader)(nil),              // 6: greptime.v1.AuthHeader
-	(*Basic)(nil),                   // 7: greptime.v1.Basic
-	(*Token)(nil),                   // 8: greptime.v1.Token
-	(*TableName)(nil),               // 9: greptime.v1.TableName
-	(*AffectedRows)(nil),            // 10: greptime.v1.AffectedRows
-	(*Metrics)(nil),                 // 11: greptime.v1.Metrics
-	(*ExpireAfter)(nil),             // 12: greptime.v1.ExpireAfter
-	(*FlightMetadata)(nil),          // 13: greptime.v1.FlightMetadata
-	(*IntervalMonthDayNano)(nil),    // 14: greptime.v1.IntervalMonthDayNano
-	(*Decimal128)(nil),              // 15: greptime.v1.Decimal128
-	(*ColumnDataTypeExtension)(nil), // 16: greptime.v1.ColumnDataTypeExtension
-	(*DecimalTypeExtension)(nil),    // 17: greptime.v1.DecimalTypeExtension
-	(*ColumnOptions)(nil),           // 18: greptime.v1.ColumnOptions
-	nil,                             // 19: greptime.v1.QueryContext.ExtensionsEntry
-	nil,                             // 20: greptime.v1.RequestHeader.TracingContextEntry
-	nil,                             // 21: greptime.v1.ColumnOptions.OptionsEntry
+	(JsonTypeExtension)(0),          // 2: greptime.v1.JsonTypeExtension
+	(*QueryContext)(nil),            // 3: greptime.v1.QueryContext
+	(*RequestHeader)(nil),           // 4: greptime.v1.RequestHeader
+	(*ResponseHeader)(nil),          // 5: greptime.v1.ResponseHeader
+	(*Status)(nil),                  // 6: greptime.v1.Status
+	(*AuthHeader)(nil),              // 7: greptime.v1.AuthHeader
+	(*Basic)(nil),                   // 8: greptime.v1.Basic
+	(*Token)(nil),                   // 9: greptime.v1.Token
+	(*TableName)(nil),               // 10: greptime.v1.TableName
+	(*AffectedRows)(nil),            // 11: greptime.v1.AffectedRows
+	(*Metrics)(nil),                 // 12: greptime.v1.Metrics
+	(*ExpireAfter)(nil),             // 13: greptime.v1.ExpireAfter
+	(*FlightMetadata)(nil),          // 14: greptime.v1.FlightMetadata
+	(*IntervalMonthDayNano)(nil),    // 15: greptime.v1.IntervalMonthDayNano
+	(*Decimal128)(nil),              // 16: greptime.v1.Decimal128
+	(*ColumnDataTypeExtension)(nil), // 17: greptime.v1.ColumnDataTypeExtension
+	(*DecimalTypeExtension)(nil),    // 18: greptime.v1.DecimalTypeExtension
+	(*ColumnOptions)(nil),           // 19: greptime.v1.ColumnOptions
+	nil,                             // 20: greptime.v1.QueryContext.ExtensionsEntry
+	nil,                             // 21: greptime.v1.RequestHeader.TracingContextEntry
+	nil,                             // 22: greptime.v1.ColumnOptions.OptionsEntry
 }
 var file_greptime_v1_common_proto_depIdxs = []int32{
-	19, // 0: greptime.v1.QueryContext.extensions:type_name -> greptime.v1.QueryContext.ExtensionsEntry
-	6,  // 1: greptime.v1.RequestHeader.authorization:type_name -> greptime.v1.AuthHeader
-	20, // 2: greptime.v1.RequestHeader.tracing_context:type_name -> greptime.v1.RequestHeader.TracingContextEntry
-	5,  // 3: greptime.v1.ResponseHeader.status:type_name -> greptime.v1.Status
-	7,  // 4: greptime.v1.AuthHeader.basic:type_name -> greptime.v1.Basic
-	8,  // 5: greptime.v1.AuthHeader.token:type_name -> greptime.v1.Token
-	10, // 6: greptime.v1.FlightMetadata.affected_rows:type_name -> greptime.v1.AffectedRows
-	11, // 7: greptime.v1.FlightMetadata.metrics:type_name -> greptime.v1.Metrics
-	17, // 8: greptime.v1.ColumnDataTypeExtension.decimal_type:type_name -> greptime.v1.DecimalTypeExtension
-	21, // 9: greptime.v1.ColumnOptions.options:type_name -> greptime.v1.ColumnOptions.OptionsEntry
-	10, // [10:10] is the sub-list for method output_type
-	10, // [10:10] is the sub-list for method input_type
-	10, // [10:10] is the sub-list for extension type_name
-	10, // [10:10] is the sub-list for extension extendee
-	0,  // [0:10] is the sub-list for field type_name
+	20, // 0: greptime.v1.QueryContext.extensions:type_name -> greptime.v1.QueryContext.ExtensionsEntry
+	7,  // 1: greptime.v1.RequestHeader.authorization:type_name -> greptime.v1.AuthHeader
+	21, // 2: greptime.v1.RequestHeader.tracing_context:type_name -> greptime.v1.RequestHeader.TracingContextEntry
+	6,  // 3: greptime.v1.ResponseHeader.status:type_name -> greptime.v1.Status
+	8,  // 4: greptime.v1.AuthHeader.basic:type_name -> greptime.v1.Basic
+	9,  // 5: greptime.v1.AuthHeader.token:type_name -> greptime.v1.Token
+	11, // 6: greptime.v1.FlightMetadata.affected_rows:type_name -> greptime.v1.AffectedRows
+	12, // 7: greptime.v1.FlightMetadata.metrics:type_name -> greptime.v1.Metrics
+	18, // 8: greptime.v1.ColumnDataTypeExtension.decimal_type:type_name -> greptime.v1.DecimalTypeExtension
+	2,  // 9: greptime.v1.ColumnDataTypeExtension.json_type:type_name -> greptime.v1.JsonTypeExtension
+	22, // 10: greptime.v1.ColumnOptions.options:type_name -> greptime.v1.ColumnOptions.OptionsEntry
+	11, // [11:11] is the sub-list for method output_type
+	11, // [11:11] is the sub-list for method input_type
+	11, // [11:11] is the sub-list for extension type_name
+	11, // [11:11] is the sub-list for extension extendee
+	0,  // [0:11] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_common_proto_init() }
@@ -1664,13 +1731,14 @@ func file_greptime_v1_common_proto_init() {
 	}
 	file_greptime_v1_common_proto_msgTypes[14].OneofWrappers = []interface{}{
 		(*ColumnDataTypeExtension_DecimalType)(nil),
+		(*ColumnDataTypeExtension_JsonType)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_common_proto_rawDesc,
-			NumEnums:      2,
+			NumEnums:      3,
 			NumMessages:   20,
 			NumExtensions: 0,
 			NumServices:   0,
diff --git a/java/src/main/java/io/greptime/v1/Common.java b/java/src/main/java/io/greptime/v1/Common.java
index c45dee34..d71febb3 100644
--- a/java/src/main/java/io/greptime/v1/Common.java
+++ b/java/src/main/java/io/greptime/v1/Common.java
@@ -464,6 +464,105 @@ private ColumnDataType(int value) {
     // @@protoc_insertion_point(enum_scope:greptime.v1.ColumnDataType)
   }
 
+  /**
+   * Protobuf enum {@code greptime.v1.JsonTypeExtension}
+   */
+  public enum JsonTypeExtension
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>JSON_BINARY = 0;</code>
+     */
+    JSON_BINARY(0),
+    UNRECOGNIZED(-1),
+    ;
+
+    /**
+     * <code>JSON_BINARY = 0;</code>
+     */
+    public static final int JSON_BINARY_VALUE = 0;
+
+
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static JsonTypeExtension valueOf(int value) {
+      return forNumber(value);
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     */
+    public static JsonTypeExtension forNumber(int value) {
+      switch (value) {
+        case 0: return JSON_BINARY;
+        default: return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<JsonTypeExtension>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        JsonTypeExtension> internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<JsonTypeExtension>() {
+            public JsonTypeExtension findValueByNumber(int number) {
+              return JsonTypeExtension.forNumber(number);
+            }
+          };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalStateException(
+            "Can't get the descriptor of an unrecognized enum value.");
+      }
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return io.greptime.v1.Common.getDescriptor().getEnumTypes().get(2);
+    }
+
+    private static final JsonTypeExtension[] VALUES = values();
+
+    public static JsonTypeExtension valueOf(
+        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private JsonTypeExtension(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:greptime.v1.JsonTypeExtension)
+  }
+
   public interface QueryContextOrBuilder extends
       // @@protoc_insertion_point(interface_extends:greptime.v1.QueryContext)
       com.google.protobuf.MessageOrBuilder {
@@ -11476,6 +11575,34 @@ public interface ColumnDataTypeExtensionOrBuilder extends
      */
     io.greptime.v1.Common.DecimalTypeExtensionOrBuilder getDecimalTypeOrBuilder();
 
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return Whether the jsonType field is set.
+     */
+    boolean hasJsonType();
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return The enum numeric value on the wire for jsonType.
+     */
+    int getJsonTypeValue();
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return The jsonType.
+     */
+    io.greptime.v1.Common.JsonTypeExtension getJsonType();
+
     public io.greptime.v1.Common.ColumnDataTypeExtension.TypeExtCase getTypeExtCase();
   }
   /**
@@ -11541,6 +11668,12 @@ private ColumnDataTypeExtension(
               typeExtCase_ = 1;
               break;
             }
+            case 16: {
+              int rawValue = input.readEnum();
+              typeExtCase_ = 2;
+              typeExt_ = rawValue;
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -11581,6 +11714,7 @@ public enum TypeExtCase
         implements com.google.protobuf.Internal.EnumLite,
             com.google.protobuf.AbstractMessage.InternalOneOfEnum {
       DECIMAL_TYPE(1),
+      JSON_TYPE(2),
       TYPEEXT_NOT_SET(0);
       private final int value;
       private TypeExtCase(int value) {
@@ -11599,6 +11733,7 @@ public static TypeExtCase valueOf(int value) {
       public static TypeExtCase forNumber(int value) {
         switch (value) {
           case 1: return DECIMAL_TYPE;
+          case 2: return JSON_TYPE;
           case 0: return TYPEEXT_NOT_SET;
           default: return null;
         }
@@ -11645,6 +11780,50 @@ public io.greptime.v1.Common.DecimalTypeExtensionOrBuilder getDecimalTypeOrBuild
       return io.greptime.v1.Common.DecimalTypeExtension.getDefaultInstance();
     }
 
+    public static final int JSON_TYPE_FIELD_NUMBER = 2;
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return Whether the jsonType field is set.
+     */
+    public boolean hasJsonType() {
+      return typeExtCase_ == 2;
+    }
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return The enum numeric value on the wire for jsonType.
+     */
+    public int getJsonTypeValue() {
+      if (typeExtCase_ == 2) {
+        return (java.lang.Integer) typeExt_;
+      }
+      return 0;
+    }
+    /**
+     * <pre>
+     * Marks the binary column in proto is actually a JSON column.
+     * </pre>
+     *
+     * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+     * @return The jsonType.
+     */
+    public io.greptime.v1.Common.JsonTypeExtension getJsonType() {
+      if (typeExtCase_ == 2) {
+        @SuppressWarnings("deprecation")
+        io.greptime.v1.Common.JsonTypeExtension result = io.greptime.v1.Common.JsonTypeExtension.valueOf(
+            (java.lang.Integer) typeExt_);
+        return result == null ? io.greptime.v1.Common.JsonTypeExtension.UNRECOGNIZED : result;
+      }
+      return io.greptime.v1.Common.JsonTypeExtension.JSON_BINARY;
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -11662,6 +11841,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       if (typeExtCase_ == 1) {
         output.writeMessage(1, (io.greptime.v1.Common.DecimalTypeExtension) typeExt_);
       }
+      if (typeExtCase_ == 2) {
+        output.writeEnum(2, ((java.lang.Integer) typeExt_));
+      }
       unknownFields.writeTo(output);
     }
 
@@ -11675,6 +11857,10 @@ public int getSerializedSize() {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(1, (io.greptime.v1.Common.DecimalTypeExtension) typeExt_);
       }
+      if (typeExtCase_ == 2) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(2, ((java.lang.Integer) typeExt_));
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -11696,6 +11882,10 @@ public boolean equals(final java.lang.Object obj) {
           if (!getDecimalType()
               .equals(other.getDecimalType())) return false;
           break;
+        case 2:
+          if (getJsonTypeValue()
+              != other.getJsonTypeValue()) return false;
+          break;
         case 0:
         default:
       }
@@ -11715,6 +11905,10 @@ public int hashCode() {
           hash = (37 * hash) + DECIMAL_TYPE_FIELD_NUMBER;
           hash = (53 * hash) + getDecimalType().hashCode();
           break;
+        case 2:
+          hash = (37 * hash) + JSON_TYPE_FIELD_NUMBER;
+          hash = (53 * hash) + getJsonTypeValue();
+          break;
         case 0:
         default:
       }
@@ -11890,6 +12084,9 @@ public io.greptime.v1.Common.ColumnDataTypeExtension buildPartial() {
             result.typeExt_ = decimalTypeBuilder_.build();
           }
         }
+        if (typeExtCase_ == 2) {
+          result.typeExt_ = typeExt_;
+        }
         result.typeExtCase_ = typeExtCase_;
         onBuilt();
         return result;
@@ -11944,6 +12141,10 @@ public Builder mergeFrom(io.greptime.v1.Common.ColumnDataTypeExtension other) {
             mergeDecimalType(other.getDecimalType());
             break;
           }
+          case JSON_TYPE: {
+            setJsonTypeValue(other.getJsonTypeValue());
+            break;
+          }
           case TYPEEXT_NOT_SET: {
             break;
           }
@@ -12133,6 +12334,101 @@ public io.greptime.v1.Common.DecimalTypeExtensionOrBuilder getDecimalTypeOrBuild
         onChanged();;
         return decimalTypeBuilder_;
       }
+
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @return Whether the jsonType field is set.
+       */
+      @java.lang.Override
+      public boolean hasJsonType() {
+        return typeExtCase_ == 2;
+      }
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @return The enum numeric value on the wire for jsonType.
+       */
+      @java.lang.Override
+      public int getJsonTypeValue() {
+        if (typeExtCase_ == 2) {
+          return ((java.lang.Integer) typeExt_).intValue();
+        }
+        return 0;
+      }
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @param value The enum numeric value on the wire for jsonType to set.
+       * @return This builder for chaining.
+       */
+      public Builder setJsonTypeValue(int value) {
+        typeExtCase_ = 2;
+        typeExt_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @return The jsonType.
+       */
+      @java.lang.Override
+      public io.greptime.v1.Common.JsonTypeExtension getJsonType() {
+        if (typeExtCase_ == 2) {
+          @SuppressWarnings("deprecation")
+          io.greptime.v1.Common.JsonTypeExtension result = io.greptime.v1.Common.JsonTypeExtension.valueOf(
+              (java.lang.Integer) typeExt_);
+          return result == null ? io.greptime.v1.Common.JsonTypeExtension.UNRECOGNIZED : result;
+        }
+        return io.greptime.v1.Common.JsonTypeExtension.JSON_BINARY;
+      }
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @param value The jsonType to set.
+       * @return This builder for chaining.
+       */
+      public Builder setJsonType(io.greptime.v1.Common.JsonTypeExtension value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        typeExtCase_ = 2;
+        typeExt_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * Marks the binary column in proto is actually a JSON column.
+       * </pre>
+       *
+       * <code>.greptime.v1.JsonTypeExtension json_type = 2;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearJsonType() {
+        if (typeExtCase_ == 2) {
+          typeExtCase_ = 0;
+          typeExt_ = null;
+          onChanged();
+        }
+        return this;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -13925,29 +14221,31 @@ public io.greptime.v1.Common.ColumnOptions getDefaultInstanceForType() {
       "2\024.greptime.v1.Metrics\"I\n\024IntervalMonthD" +
       "ayNano\022\016\n\006months\030\001 \001(\005\022\014\n\004days\030\002 \001(\005\022\023\n\013" +
       "nanoseconds\030\003 \001(\003\"$\n\nDecimal128\022\n\n\002hi\030\001 " +
-      "\001(\003\022\n\n\002lo\030\002 \001(\003\"`\n\027ColumnDataTypeExtensi" +
-      "on\0229\n\014decimal_type\030\001 \001(\0132!.greptime.v1.D" +
-      "ecimalTypeExtensionH\000B\n\n\010type_ext\"8\n\024Dec" +
-      "imalTypeExtension\022\021\n\tprecision\030\001 \001(\005\022\r\n\005" +
-      "scale\030\002 \001(\005\"y\n\rColumnOptions\0228\n\007options\030" +
-      "\001 \003(\0132\'.greptime.v1.ColumnOptions.Option" +
-      "sEntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005v" +
-      "alue\030\002 \001(\t:\0028\001*1\n\014SemanticType\022\007\n\003TAG\020\000\022" +
-      "\t\n\005FIELD\020\001\022\r\n\tTIMESTAMP\020\002*\326\003\n\016ColumnData" +
-      "Type\022\013\n\007BOOLEAN\020\000\022\010\n\004INT8\020\001\022\t\n\005INT16\020\002\022\t" +
-      "\n\005INT32\020\003\022\t\n\005INT64\020\004\022\t\n\005UINT8\020\005\022\n\n\006UINT1" +
-      "6\020\006\022\n\n\006UINT32\020\007\022\n\n\006UINT64\020\010\022\013\n\007FLOAT32\020\t" +
-      "\022\013\n\007FLOAT64\020\n\022\n\n\006BINARY\020\013\022\n\n\006STRING\020\014\022\010\n" +
-      "\004DATE\020\r\022\014\n\010DATETIME\020\016\022\024\n\020TIMESTAMP_SECON" +
-      "D\020\017\022\031\n\025TIMESTAMP_MILLISECOND\020\020\022\031\n\025TIMEST" +
-      "AMP_MICROSECOND\020\021\022\030\n\024TIMESTAMP_NANOSECON" +
-      "D\020\022\022\017\n\013TIME_SECOND\020\023\022\024\n\020TIME_MILLISECOND" +
-      "\020\024\022\024\n\020TIME_MICROSECOND\020\025\022\023\n\017TIME_NANOSEC" +
-      "OND\020\026\022\027\n\023INTERVAL_YEAR_MONTH\020\027\022\025\n\021INTERV" +
-      "AL_DAY_TIME\020\030\022\033\n\027INTERVAL_MONTH_DAY_NANO" +
-      "\020\031\022\016\n\nDECIMAL128\020\036BO\n\016io.greptime.v1B\006Co" +
-      "mmonZ5github.com/GreptimeTeam/greptime-p" +
-      "roto/go/greptime/v1b\006proto3"
+      "\001(\003\022\n\n\002lo\030\002 \001(\003\"\225\001\n\027ColumnDataTypeExtens" +
+      "ion\0229\n\014decimal_type\030\001 \001(\0132!.greptime.v1." +
+      "DecimalTypeExtensionH\000\0223\n\tjson_type\030\002 \001(" +
+      "\0162\036.greptime.v1.JsonTypeExtensionH\000B\n\n\010t" +
+      "ype_ext\"8\n\024DecimalTypeExtension\022\021\n\tpreci" +
+      "sion\030\001 \001(\005\022\r\n\005scale\030\002 \001(\005\"y\n\rColumnOptio" +
+      "ns\0228\n\007options\030\001 \003(\0132\'.greptime.v1.Column" +
+      "Options.OptionsEntry\032.\n\014OptionsEntry\022\013\n\003" +
+      "key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001*1\n\014Semantic" +
+      "Type\022\007\n\003TAG\020\000\022\t\n\005FIELD\020\001\022\r\n\tTIMESTAMP\020\002*" +
+      "\326\003\n\016ColumnDataType\022\013\n\007BOOLEAN\020\000\022\010\n\004INT8\020" +
+      "\001\022\t\n\005INT16\020\002\022\t\n\005INT32\020\003\022\t\n\005INT64\020\004\022\t\n\005UI" +
+      "NT8\020\005\022\n\n\006UINT16\020\006\022\n\n\006UINT32\020\007\022\n\n\006UINT64\020" +
+      "\010\022\013\n\007FLOAT32\020\t\022\013\n\007FLOAT64\020\n\022\n\n\006BINARY\020\013\022" +
+      "\n\n\006STRING\020\014\022\010\n\004DATE\020\r\022\014\n\010DATETIME\020\016\022\024\n\020T" +
+      "IMESTAMP_SECOND\020\017\022\031\n\025TIMESTAMP_MILLISECO" +
+      "ND\020\020\022\031\n\025TIMESTAMP_MICROSECOND\020\021\022\030\n\024TIMES" +
+      "TAMP_NANOSECOND\020\022\022\017\n\013TIME_SECOND\020\023\022\024\n\020TI" +
+      "ME_MILLISECOND\020\024\022\024\n\020TIME_MICROSECOND\020\025\022\023" +
+      "\n\017TIME_NANOSECOND\020\026\022\027\n\023INTERVAL_YEAR_MON" +
+      "TH\020\027\022\025\n\021INTERVAL_DAY_TIME\020\030\022\033\n\027INTERVAL_" +
+      "MONTH_DAY_NANO\020\031\022\016\n\nDECIMAL128\020\036*$\n\021Json" +
+      "TypeExtension\022\017\n\013JSON_BINARY\020\000BO\n\016io.gre" +
+      "ptime.v1B\006CommonZ5github.com/GreptimeTea" +
+      "m/greptime-proto/go/greptime/v1b\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -14054,7 +14352,7 @@ public io.greptime.v1.Common.ColumnOptions getDefaultInstanceForType() {
     internal_static_greptime_v1_ColumnDataTypeExtension_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_ColumnDataTypeExtension_descriptor,
-        new java.lang.String[] { "DecimalType", "TypeExt", });
+        new java.lang.String[] { "DecimalType", "JsonType", "TypeExt", });
     internal_static_greptime_v1_DecimalTypeExtension_descriptor =
       getDescriptor().getMessageTypes().get(15);
     internal_static_greptime_v1_DecimalTypeExtension_fieldAccessorTable = new
diff --git a/proto/greptime/v1/common.proto b/proto/greptime/v1/common.proto
index d56aa925..5124f41f 100644
--- a/proto/greptime/v1/common.proto
+++ b/proto/greptime/v1/common.proto
@@ -133,7 +133,11 @@ message Decimal128 {
 
 // Type extension for some complex types
 message ColumnDataTypeExtension {
-  oneof type_ext { DecimalTypeExtension decimal_type = 1; }
+  oneof type_ext {
+    DecimalTypeExtension decimal_type = 1;
+    // Marks the binary column in proto is actually a JSON column.
+    JsonTypeExtension json_type = 2;
+  }
 }
 
 message DecimalTypeExtension {
@@ -141,6 +145,10 @@ message DecimalTypeExtension {
   int32 scale = 2;
 }
 
+enum JsonTypeExtension {
+  JSON_BINARY = 0;
+}
+
 // Additional options for the column.
 message ColumnOptions {
   // Supported keys: