diff --git a/dbms/CMakeLists.txt b/dbms/CMakeLists.txt
index 376c8b48ec4..1b3a54eb50b 100644
--- a/dbms/CMakeLists.txt
+++ b/dbms/CMakeLists.txt
@@ -66,6 +66,7 @@ add_headers_and_sources(dbms src/DataStreams)
 add_headers_and_sources(dbms src/DataTypes)
 add_headers_and_sources(dbms src/Databases)
 add_headers_and_sources(dbms src/Debug)
+add_headers_and_sources(dbms src/Debug/MockExecutor)
 add_headers_and_sources(dbms src/Dictionaries)
 add_headers_and_sources(dbms src/Dictionaries/Embedded)
 add_headers_and_sources(dbms src/Dictionaries/Embedded/GeodataProviders)
diff --git a/dbms/src/Debug/astToExecutor.cpp b/dbms/src/Debug/MockExecutor/astToExecutor.cpp
similarity index 91%
rename from dbms/src/Debug/astToExecutor.cpp
rename to dbms/src/Debug/MockExecutor/astToExecutor.cpp
index 0a8c78bfcd8..6a5f38de9e0 100644
--- a/dbms/src/Debug/astToExecutor.cpp
+++ b/dbms/src/Debug/MockExecutor/astToExecutor.cpp
@@ -16,7 +16,8 @@
 #include <AggregateFunctions/AggregateFunctionUniq.h>
 #include <DataTypes/FieldToDataType.h>
 #include <Debug/MockComputeServerManager.h>
-#include <Debug/astToExecutor.h>
+#include <Debug/MockExecutor/astToExecutor.h>
+#include <Debug/MockExecutor/funcSigs.h>
 #include <Flash/Coprocessor/ChunkCodec.h>
 #include <Flash/Coprocessor/DAGCodec.h>
 #include <Flash/Coprocessor/DAGUtils.h>
@@ -31,8 +32,16 @@
 
 namespace DB
 {
+namespace ErrorCodes
+{
+extern const int BAD_ARGUMENTS;
+extern const int LOGICAL_ERROR;
+extern const int NO_SUCH_COLUMN_IN_TABLE;
+} // namespace ErrorCodes
+
 using ASTPartitionByElement = ASTOrderByElement;
 using MockComputeServerManager = tests::MockComputeServerManager;
+
 void literalFieldToTiPBExpr(const ColumnInfo & ci, const Field & val_field, tipb::Expr * expr, Int32 collator_id)
 {
     *(expr->mutable_field_type()) = columnInfoToFieldType(ci);
@@ -120,96 +129,6 @@ void literalFieldToTiPBExpr(const ColumnInfo & ci, const Field & val_field, tipb
     }
 }
 
-namespace
-{
-std::unordered_map<String, tipb::ScalarFuncSig> func_name_to_sig({
-    {"plusint", tipb::ScalarFuncSig::PlusInt},
-    {"minusint", tipb::ScalarFuncSig::MinusInt},
-    {"equals", tipb::ScalarFuncSig::EQInt},
-    {"notEquals", tipb::ScalarFuncSig::NEInt},
-    {"and", tipb::ScalarFuncSig::LogicalAnd},
-    {"or", tipb::ScalarFuncSig::LogicalOr},
-    {"xor", tipb::ScalarFuncSig::LogicalXor},
-    {"not", tipb::ScalarFuncSig::UnaryNotInt},
-    {"greater", tipb::ScalarFuncSig::GTInt},
-    {"greaterorequals", tipb::ScalarFuncSig::GEInt},
-    {"less", tipb::ScalarFuncSig::LTInt},
-    {"lessorequals", tipb::ScalarFuncSig::LEInt},
-    {"in", tipb::ScalarFuncSig::InInt},
-    {"notin", tipb::ScalarFuncSig::InInt},
-    {"date_format", tipb::ScalarFuncSig::DateFormatSig},
-    {"if", tipb::ScalarFuncSig::IfInt},
-    {"from_unixtime", tipb::ScalarFuncSig::FromUnixTime2Arg},
-    /// bit_and/bit_or/bit_xor is aggregated function in clickhouse/mysql
-    {"bitand", tipb::ScalarFuncSig::BitAndSig},
-    {"bitor", tipb::ScalarFuncSig::BitOrSig},
-    {"bitxor", tipb::ScalarFuncSig::BitXorSig},
-    {"bitnot", tipb::ScalarFuncSig::BitNegSig},
-    {"notequals", tipb::ScalarFuncSig::NEInt},
-    {"like", tipb::ScalarFuncSig::LikeSig},
-    {"cast_int_int", tipb::ScalarFuncSig::CastIntAsInt},
-    {"cast_int_real", tipb::ScalarFuncSig::CastIntAsReal},
-    {"cast_real_int", tipb::ScalarFuncSig::CastRealAsInt},
-    {"cast_real_real", tipb::ScalarFuncSig::CastRealAsReal},
-    {"cast_decimal_int", tipb::ScalarFuncSig::CastDecimalAsInt},
-    {"cast_time_int", tipb::ScalarFuncSig::CastTimeAsInt},
-    {"cast_string_int", tipb::ScalarFuncSig::CastStringAsInt},
-    {"cast_int_decimal", tipb::ScalarFuncSig::CastIntAsDecimal},
-    {"cast_real_decimal", tipb::ScalarFuncSig::CastRealAsDecimal},
-    {"cast_decimal_decimal", tipb::ScalarFuncSig::CastDecimalAsDecimal},
-    {"cast_time_decimal", tipb::ScalarFuncSig::CastTimeAsDecimal},
-    {"cast_string_decimal", tipb::ScalarFuncSig::CastStringAsDecimal},
-    {"cast_int_string", tipb::ScalarFuncSig::CastIntAsString},
-    {"cast_real_string", tipb::ScalarFuncSig::CastRealAsString},
-    {"cast_decimal_string", tipb::ScalarFuncSig::CastDecimalAsString},
-    {"cast_time_string", tipb::ScalarFuncSig::CastTimeAsString},
-    {"cast_string_string", tipb::ScalarFuncSig::CastStringAsString},
-    {"cast_int_date", tipb::ScalarFuncSig::CastIntAsTime},
-    {"cast_real_date", tipb::ScalarFuncSig::CastRealAsTime},
-    {"cast_decimal_date", tipb::ScalarFuncSig::CastDecimalAsTime},
-    {"cast_time_date", tipb::ScalarFuncSig::CastTimeAsTime},
-    {"cast_string_date", tipb::ScalarFuncSig::CastStringAsTime},
-    {"cast_int_datetime", tipb::ScalarFuncSig::CastIntAsTime},
-    {"cast_real_datetime", tipb::ScalarFuncSig::CastRealAsTime},
-    {"cast_decimal_datetime", tipb::ScalarFuncSig::CastDecimalAsTime},
-    {"cast_time_datetime", tipb::ScalarFuncSig::CastTimeAsTime},
-    {"cast_string_datetime", tipb::ScalarFuncSig::CastStringAsTime},
-    {"concat", tipb::ScalarFuncSig::Concat},
-    {"round_int", tipb::ScalarFuncSig::RoundInt},
-    {"round_uint", tipb::ScalarFuncSig::RoundInt},
-    {"round_dec", tipb::ScalarFuncSig::RoundDec},
-    {"round_real", tipb::ScalarFuncSig::RoundReal},
-    {"round_with_frac_int", tipb::ScalarFuncSig::RoundWithFracInt},
-    {"round_with_frac_uint", tipb::ScalarFuncSig::RoundWithFracInt},
-    {"round_with_frac_dec", tipb::ScalarFuncSig::RoundWithFracDec},
-    {"round_with_frac_real", tipb::ScalarFuncSig::RoundWithFracReal},
-});
-
-std::unordered_map<String, tipb::ExprType> agg_func_name_to_sig({
-    {"min", tipb::ExprType::Min},
-    {"max", tipb::ExprType::Max},
-    {"count", tipb::ExprType::Count},
-    {"sum", tipb::ExprType::Sum},
-    {"first_row", tipb::ExprType::First},
-    {"uniqRawRes", tipb::ExprType::ApproxCountDistinct},
-    {"group_concat", tipb::ExprType::GroupConcat},
-});
-
-std::unordered_map<String, tipb::ExprType> window_func_name_to_sig({
-    {"RowNumber", tipb::ExprType::RowNumber},
-    {"Rank", tipb::ExprType::Rank},
-    {"DenseRank", tipb::ExprType::DenseRank},
-    {"Lead", tipb::ExprType::Lead},
-    {"Lag", tipb::ExprType::Lag},
-});
-
-DAGColumnInfo toNullableDAGColumnInfo(const DAGColumnInfo & input)
-{
-    DAGColumnInfo output = input;
-    output.second.clearNotNullFlag();
-    return output;
-}
-
 void literalToPB(tipb::Expr * expr, const Field & value, int32_t collator_id)
 {
     DataTypePtr type = applyVisitor(FieldToDataType(), value);
@@ -311,19 +230,6 @@ void astToPB(const DAGSchema & input, ASTPtr ast, tipb::Expr * expr, int32_t col
     }
 }
 
-auto checkSchema(const DAGSchema & input, String checked_column)
-{
-    auto ft = std::find_if(input.begin(), input.end(), [&](const auto & field) {
-        auto [checked_db_name, checked_table_name, checked_column_name] = splitQualifiedName(checked_column);
-        auto [db_name, table_name, column_name] = splitQualifiedName(field.first);
-        if (checked_table_name.empty())
-            return column_name == checked_column_name;
-        else
-            return table_name == checked_table_name && column_name == checked_column_name;
-    });
-    return ft;
-}
-
 void functionToPB(const DAGSchema & input, ASTFunction * func, tipb::Expr * expr, int32_t collator_id, const Context & context)
 {
     /// aggregation function is handled in Aggregation, so just treated as a column
@@ -345,8 +251,8 @@ void functionToPB(const DAGSchema & input, ASTFunction * func, tipb::Expr * expr
     // TODO: Support more functions.
     // TODO: Support type inference.
 
-    const auto it_sig = func_name_to_sig.find(func_name_lowercase);
-    if (it_sig == func_name_to_sig.end())
+    const auto it_sig = tests::func_name_to_sig.find(func_name_lowercase);
+    if (it_sig == tests::func_name_to_sig.end())
     {
         throw Exception("Unsupported function: " + func_name_lowercase, ErrorCodes::LOGICAL_ERROR);
     }
@@ -617,8 +523,8 @@ TiDB::ColumnInfo compileExpr(const DAGSchema & input, ASTPtr ast)
     {
         /// check function
         String func_name_lowercase = Poco::toLower(func->name);
-        const auto it_sig = func_name_to_sig.find(func_name_lowercase);
-        if (it_sig == func_name_to_sig.end())
+        const auto it_sig = tests::func_name_to_sig.find(func_name_lowercase);
+        if (it_sig == tests::func_name_to_sig.end())
         {
             throw Exception("Unsupported function: " + func_name_lowercase, ErrorCodes::LOGICAL_ERROR);
         }
@@ -789,42 +695,6 @@ void compileFilter(const DAGSchema & input, ASTPtr ast, std::vector<ASTPtr> & co
     conditions.push_back(ast);
     compileExpr(input, ast);
 }
-} // namespace
-
-namespace Debug
-{
-String LOCAL_HOST = "127.0.0.1:3930";
-
-void setServiceAddr(const std::string & addr)
-{
-    LOCAL_HOST = addr;
-}
-} // namespace Debug
-
-ColumnName splitQualifiedName(const String & s)
-{
-    ColumnName ret;
-    Poco::StringTokenizer string_tokens(s, ".");
-
-    switch (string_tokens.count())
-    {
-    case 1:
-        ret.column_name = s;
-        break;
-    case 2:
-        ret.table_name = string_tokens[0];
-        ret.column_name = string_tokens[1];
-        break;
-    case 3:
-        ret.db_name = string_tokens[0];
-        ret.table_name = string_tokens[1];
-        ret.column_name = string_tokens[2];
-        break;
-    default:
-        throw Exception("Invalid identifier name " + s);
-    }
-    return ret;
-}
 
 namespace mock
 {
@@ -1038,8 +908,8 @@ bool Aggregation::toTiPBExecutor(tipb::Executor * tipb_executor, int32_t collato
             tipb::Expr * arg_expr = agg_func->add_children();
             astToPB(input_schema, arg, arg_expr, collator_id, context);
         }
-        auto agg_sig_it = agg_func_name_to_sig.find(func->name);
-        if (agg_sig_it == agg_func_name_to_sig.end())
+        auto agg_sig_it = tests::agg_func_name_to_sig.find(func->name);
+        if (agg_sig_it == tests::agg_func_name_to_sig.end())
             throw Exception("Unsupported agg function " + func->name, ErrorCodes::LOGICAL_ERROR);
         auto agg_sig = agg_sig_it->second;
         agg_func->set_tp(agg_sig);
@@ -1453,8 +1323,8 @@ bool Window::toTiPBExecutor(tipb::Executor * tipb_executor, int32_t collator_id,
             tipb::Expr * func = window_expr->add_children();
             astToPB(input_schema, arg, func, collator_id, context);
         }
-        auto window_sig_it = window_func_name_to_sig.find(window_func->name);
-        if (window_sig_it == window_func_name_to_sig.end())
+        auto window_sig_it = tests::window_func_name_to_sig.find(window_func->name);
+        if (window_sig_it == tests::window_func_name_to_sig.end())
             throw Exception(fmt::format("Unsupported window function {}", window_func->name), ErrorCodes::LOGICAL_ERROR);
         auto window_sig = window_sig_it->second;
         window_expr->set_tp(window_sig);
@@ -1905,7 +1775,7 @@ ExecutorPtr compileWindow(ExecutorPtr input, size_t & executor_index, ASTPtr fun
             }
             // TODO: add more window functions
             TiDB::ColumnInfo ci;
-            switch (window_func_name_to_sig[func->name])
+            switch (tests::window_func_name_to_sig[func->name])
             {
             case tipb::ExprType::RowNumber:
             case tipb::ExprType::Rank:
diff --git a/dbms/src/Debug/astToExecutor.h b/dbms/src/Debug/MockExecutor/astToExecutor.h
similarity index 95%
rename from dbms/src/Debug/astToExecutor.h
rename to dbms/src/Debug/MockExecutor/astToExecutor.h
index caa9116f2e1..aa82121a707 100644
--- a/dbms/src/Debug/astToExecutor.h
+++ b/dbms/src/Debug/MockExecutor/astToExecutor.h
@@ -16,6 +16,7 @@
 
 #include <Debug/DAGProperties.h>
 #include <Debug/DBGInvoker.h>
+#include <Debug/MockExecutor/astToExecutorUtils.h>
 #include <Debug/MockServerInfo.h>
 #include <Debug/MockTiDB.h>
 #include <Functions/FunctionFactory.h>
@@ -35,34 +36,6 @@
 
 namespace DB
 {
-namespace ErrorCodes
-{
-extern const int BAD_ARGUMENTS;
-extern const int LOGICAL_ERROR;
-extern const int NO_SUCH_COLUMN_IN_TABLE;
-} // namespace ErrorCodes
-
-using DAGColumnInfo = std::pair<String, ColumnInfo>;
-using DAGSchema = std::vector<DAGColumnInfo>;
-
-namespace Debug
-{
-extern String LOCAL_HOST;
-void setServiceAddr(const std::string & addr);
-} // namespace Debug
-
-// We use qualified format like "db_name.table_name.column_name"
-// to identify one column of a table.
-// We can split the qualified format into the ColumnName struct.
-struct ColumnName
-{
-    String db_name;
-    String table_name;
-    String column_name;
-};
-
-ColumnName splitQualifiedName(const String & s);
-
 struct MPPCtx
 {
     Timestamp start_ts;
diff --git a/dbms/src/Debug/MockExecutor/astToExecutorUtils.cpp b/dbms/src/Debug/MockExecutor/astToExecutorUtils.cpp
new file mode 100644
index 00000000000..5b935776a5e
--- /dev/null
+++ b/dbms/src/Debug/MockExecutor/astToExecutorUtils.cpp
@@ -0,0 +1,74 @@
+// Copyright 2022 PingCAP, Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <Debug/MockExecutor/astToExecutorUtils.h>
+
+namespace DB
+{
+ColumnName splitQualifiedName(const String & s)
+{
+    ColumnName ret;
+    Poco::StringTokenizer string_tokens(s, ".");
+
+    switch (string_tokens.count())
+    {
+    case 1:
+        ret.column_name = s;
+        break;
+    case 2:
+        ret.table_name = string_tokens[0];
+        ret.column_name = string_tokens[1];
+        break;
+    case 3:
+        ret.db_name = string_tokens[0];
+        ret.table_name = string_tokens[1];
+        ret.column_name = string_tokens[2];
+        break;
+    default:
+        throw Exception("Invalid identifier name " + s);
+    }
+    return ret;
+}
+
+
+std::__wrap_iter<const std::pair<std::string, TiDB::ColumnInfo> *> checkSchema(const DAGSchema & input, String checked_column)
+{
+    auto ft = std::find_if(input.begin(), input.end(), [&](const auto & field) {
+        auto [checked_db_name, checked_table_name, checked_column_name] = splitQualifiedName(checked_column);
+        auto [db_name, table_name, column_name] = splitQualifiedName(field.first);
+        if (checked_table_name.empty())
+            return column_name == checked_column_name;
+        else
+            return table_name == checked_table_name && column_name == checked_column_name;
+    });
+    return ft;
+}
+
+DAGColumnInfo toNullableDAGColumnInfo(const DAGColumnInfo & input)
+{
+    DAGColumnInfo output = input;
+    output.second.clearNotNullFlag();
+    return output;
+}
+
+namespace Debug
+{
+String LOCAL_HOST = "127.0.0.1:3930";
+
+void setServiceAddr(const std::string & addr)
+{
+    LOCAL_HOST = addr;
+}
+} // namespace Debug
+} // namespace DB
diff --git a/dbms/src/Debug/MockExecutor/astToExecutorUtils.h b/dbms/src/Debug/MockExecutor/astToExecutorUtils.h
new file mode 100644
index 00000000000..95689bc0895
--- /dev/null
+++ b/dbms/src/Debug/MockExecutor/astToExecutorUtils.h
@@ -0,0 +1,50 @@
+// Copyright 2022 PingCAP, Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <Common/Exception.h>
+#include <Poco/StringTokenizer.h>
+#include <Storages/Transaction/TiDB.h>
+#include <common/types.h>
+
+namespace DB
+{
+
+using DAGColumnInfo = std::pair<String, TiDB::ColumnInfo>;
+using DAGSchema = std::vector<DAGColumnInfo>;
+
+// We use qualified format like "db_name.table_name.column_name"
+// to identify one column of a table.
+// We can split the qualified format into the ColumnName struct.
+struct ColumnName
+{
+    String db_name;
+    String table_name;
+    String column_name;
+};
+
+ColumnName splitQualifiedName(const String & s);
+
+std::__wrap_iter<const std::pair<std::string, TiDB::ColumnInfo> *> checkSchema(const DAGSchema & input, String checked_column);
+
+DAGColumnInfo toNullableDAGColumnInfo(const DAGColumnInfo & input);
+
+namespace Debug
+{
+extern String LOCAL_HOST;
+
+void setServiceAddr(const std::string & addr);
+} // namespace Debug
+} // namespace DB
diff --git a/dbms/src/Debug/MockExecutor/funcSigs.h b/dbms/src/Debug/MockExecutor/funcSigs.h
new file mode 100644
index 00000000000..4c45a4a5736
--- /dev/null
+++ b/dbms/src/Debug/MockExecutor/funcSigs.h
@@ -0,0 +1,102 @@
+// Copyright 2022 PingCAP, Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <common/types.h>
+#include <tipb/expression.pb.h>
+
+namespace DB::tests
+{
+std::unordered_map<String, tipb::ScalarFuncSig> func_name_to_sig({
+    {"plusint", tipb::ScalarFuncSig::PlusInt},
+    {"minusint", tipb::ScalarFuncSig::MinusInt},
+    {"equals", tipb::ScalarFuncSig::EQInt},
+    {"notEquals", tipb::ScalarFuncSig::NEInt},
+    {"and", tipb::ScalarFuncSig::LogicalAnd},
+    {"or", tipb::ScalarFuncSig::LogicalOr},
+    {"xor", tipb::ScalarFuncSig::LogicalXor},
+    {"not", tipb::ScalarFuncSig::UnaryNotInt},
+    {"greater", tipb::ScalarFuncSig::GTInt},
+    {"greaterorequals", tipb::ScalarFuncSig::GEInt},
+    {"less", tipb::ScalarFuncSig::LTInt},
+    {"lessorequals", tipb::ScalarFuncSig::LEInt},
+    {"in", tipb::ScalarFuncSig::InInt},
+    {"notin", tipb::ScalarFuncSig::InInt},
+    {"date_format", tipb::ScalarFuncSig::DateFormatSig},
+    {"if", tipb::ScalarFuncSig::IfInt},
+    {"from_unixtime", tipb::ScalarFuncSig::FromUnixTime2Arg},
+    /// bit_and/bit_or/bit_xor is aggregated function in clickhouse/mysql
+    {"bitand", tipb::ScalarFuncSig::BitAndSig},
+    {"bitor", tipb::ScalarFuncSig::BitOrSig},
+    {"bitxor", tipb::ScalarFuncSig::BitXorSig},
+    {"bitnot", tipb::ScalarFuncSig::BitNegSig},
+    {"notequals", tipb::ScalarFuncSig::NEInt},
+    {"like", tipb::ScalarFuncSig::LikeSig},
+    {"cast_int_int", tipb::ScalarFuncSig::CastIntAsInt},
+    {"cast_int_real", tipb::ScalarFuncSig::CastIntAsReal},
+    {"cast_real_int", tipb::ScalarFuncSig::CastRealAsInt},
+    {"cast_real_real", tipb::ScalarFuncSig::CastRealAsReal},
+    {"cast_decimal_int", tipb::ScalarFuncSig::CastDecimalAsInt},
+    {"cast_time_int", tipb::ScalarFuncSig::CastTimeAsInt},
+    {"cast_string_int", tipb::ScalarFuncSig::CastStringAsInt},
+    {"cast_int_decimal", tipb::ScalarFuncSig::CastIntAsDecimal},
+    {"cast_real_decimal", tipb::ScalarFuncSig::CastRealAsDecimal},
+    {"cast_decimal_decimal", tipb::ScalarFuncSig::CastDecimalAsDecimal},
+    {"cast_time_decimal", tipb::ScalarFuncSig::CastTimeAsDecimal},
+    {"cast_string_decimal", tipb::ScalarFuncSig::CastStringAsDecimal},
+    {"cast_int_string", tipb::ScalarFuncSig::CastIntAsString},
+    {"cast_real_string", tipb::ScalarFuncSig::CastRealAsString},
+    {"cast_decimal_string", tipb::ScalarFuncSig::CastDecimalAsString},
+    {"cast_time_string", tipb::ScalarFuncSig::CastTimeAsString},
+    {"cast_string_string", tipb::ScalarFuncSig::CastStringAsString},
+    {"cast_int_date", tipb::ScalarFuncSig::CastIntAsTime},
+    {"cast_real_date", tipb::ScalarFuncSig::CastRealAsTime},
+    {"cast_decimal_date", tipb::ScalarFuncSig::CastDecimalAsTime},
+    {"cast_time_date", tipb::ScalarFuncSig::CastTimeAsTime},
+    {"cast_string_date", tipb::ScalarFuncSig::CastStringAsTime},
+    {"cast_int_datetime", tipb::ScalarFuncSig::CastIntAsTime},
+    {"cast_real_datetime", tipb::ScalarFuncSig::CastRealAsTime},
+    {"cast_decimal_datetime", tipb::ScalarFuncSig::CastDecimalAsTime},
+    {"cast_time_datetime", tipb::ScalarFuncSig::CastTimeAsTime},
+    {"cast_string_datetime", tipb::ScalarFuncSig::CastStringAsTime},
+    {"concat", tipb::ScalarFuncSig::Concat},
+    {"round_int", tipb::ScalarFuncSig::RoundInt},
+    {"round_uint", tipb::ScalarFuncSig::RoundInt},
+    {"round_dec", tipb::ScalarFuncSig::RoundDec},
+    {"round_real", tipb::ScalarFuncSig::RoundReal},
+    {"round_with_frac_int", tipb::ScalarFuncSig::RoundWithFracInt},
+    {"round_with_frac_uint", tipb::ScalarFuncSig::RoundWithFracInt},
+    {"round_with_frac_dec", tipb::ScalarFuncSig::RoundWithFracDec},
+    {"round_with_frac_real", tipb::ScalarFuncSig::RoundWithFracReal},
+});
+
+std::unordered_map<String, tipb::ExprType> agg_func_name_to_sig({
+    {"min", tipb::ExprType::Min},
+    {"max", tipb::ExprType::Max},
+    {"count", tipb::ExprType::Count},
+    {"sum", tipb::ExprType::Sum},
+    {"first_row", tipb::ExprType::First},
+    {"uniqRawRes", tipb::ExprType::ApproxCountDistinct},
+    {"group_concat", tipb::ExprType::GroupConcat},
+});
+
+std::unordered_map<String, tipb::ExprType> window_func_name_to_sig({
+    {"RowNumber", tipb::ExprType::RowNumber},
+    {"Rank", tipb::ExprType::Rank},
+    {"DenseRank", tipb::ExprType::DenseRank},
+    {"Lead", tipb::ExprType::Lead},
+    {"Lag", tipb::ExprType::Lag},
+});
+} // namespace DB::tests
diff --git a/dbms/src/Debug/dbgFuncCoprocessor.cpp b/dbms/src/Debug/dbgFuncCoprocessor.cpp
index 1af655825e3..dacc459b81c 100644
--- a/dbms/src/Debug/dbgFuncCoprocessor.cpp
+++ b/dbms/src/Debug/dbgFuncCoprocessor.cpp
@@ -20,8 +20,8 @@
 #include <DataStreams/TiRemoteBlockInputStream.h>
 #include <DataTypes/FieldToDataType.h>
 #include <Debug/DAGProperties.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Debug/MockTiDB.h>
-#include <Debug/astToExecutor.h>
 #include <Debug/dbgFuncCoprocessor.h>
 #include <Debug/dbgNaturalDag.h>
 #include <Flash/Coprocessor/ArrowChunkCodec.h>
diff --git a/dbms/src/Debug/dbgFuncCoprocessor.h b/dbms/src/Debug/dbgFuncCoprocessor.h
index 59042dfc61e..51db6865011 100644
--- a/dbms/src/Debug/dbgFuncCoprocessor.h
+++ b/dbms/src/Debug/dbgFuncCoprocessor.h
@@ -16,7 +16,7 @@
 
 #include <Debug/DAGProperties.h>
 #include <Debug/DBGInvoker.h>
-#include <Debug/astToExecutor.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Flash/Coprocessor/ChunkCodec.h>
 #include <Parsers/IAST.h>
 #include <Storages/Transaction/Types.h>
diff --git a/dbms/src/Server/FlashGrpcServerHolder.h b/dbms/src/Server/FlashGrpcServerHolder.h
index b939a6bd08e..ae1edddca40 100644
--- a/dbms/src/Server/FlashGrpcServerHolder.h
+++ b/dbms/src/Server/FlashGrpcServerHolder.h
@@ -16,7 +16,7 @@
 #include <Common/BackgroundTask.h>
 #include <Common/ThreadManager.h>
 #include <Common/assert_cast.h>
-#include <Debug/astToExecutor.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Flash/DiagnosticsService.h>
 #include <Flash/FlashService.h>
 #include <Flash/Mpp/GRPCCompletionQueuePool.h>
diff --git a/dbms/src/TestUtils/ColumnsToTiPBExpr.cpp b/dbms/src/TestUtils/ColumnsToTiPBExpr.cpp
index ea19ff08dd3..73168ba2cec 100644
--- a/dbms/src/TestUtils/ColumnsToTiPBExpr.cpp
+++ b/dbms/src/TestUtils/ColumnsToTiPBExpr.cpp
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 #include <Columns/ColumnNullable.h>
-#include <Debug/astToExecutor.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Flash/Coprocessor/DAGCodec.h>
 #include <Storages/Transaction/TypeMapping.h>
 #include <TestUtils/ColumnsToTiPBExpr.h>
diff --git a/dbms/src/TestUtils/mockExecutor.cpp b/dbms/src/TestUtils/mockExecutor.cpp
index 6921538b1c2..0e4232ac7e7 100644
--- a/dbms/src/TestUtils/mockExecutor.cpp
+++ b/dbms/src/TestUtils/mockExecutor.cpp
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 #include <Debug/MockComputeServerManager.h>
-#include <Debug/astToExecutor.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Debug/dbgFuncCoprocessor.h>
 #include <Flash/Statistics/traverseExecutors.h>
 #include <Interpreters/Context.h>
diff --git a/dbms/src/TestUtils/mockExecutor.h b/dbms/src/TestUtils/mockExecutor.h
index 2e9f8180034..55ad992ca06 100644
--- a/dbms/src/TestUtils/mockExecutor.h
+++ b/dbms/src/TestUtils/mockExecutor.h
@@ -15,8 +15,8 @@
 #pragma once
 
 #include <Core/ColumnsWithTypeAndName.h>
+#include <Debug/MockExecutor/astToExecutor.h>
 #include <Debug/MockStorage.h>
-#include <Debug/astToExecutor.h>
 #include <Debug/dbgFuncCoprocessor.h>
 #include <Interpreters/Context.h>
 #include <Parsers/ASTFunction.h>