diff --git a/src/Functions/now.cpp b/src/Functions/now.cpp
index b244d054cfe..653a39b38d0 100644
--- a/src/Functions/now.cpp
+++ b/src/Functions/now.cpp
@@ -43,13 +43,13 @@ private:
 class FunctionBaseNow : public IFunctionBase
 {
 public:
-    explicit FunctionBaseNow(time_t time_, DataTypePtr return_type_) : time_value(time_), return_type(return_type_) {}
+    explicit FunctionBaseNow(time_t time_, DataTypes argument_types_, DataTypePtr return_type_)
+        : time_value(time_), argument_types(std::move(argument_types_)), return_type(std::move(return_type_)) {}
 
     String getName() const override { return "now"; }
 
     const DataTypes & getArgumentTypes() const override
     {
-        static const DataTypes argument_types;
         return argument_types;
     }
 
@@ -69,6 +69,7 @@ public:
 
 private:
     time_t time_value;
+    DataTypes argument_types;
     DataTypePtr return_type;
 };
 
@@ -117,8 +118,10 @@ public:
         }
         if (arguments.size() == 1)
             return std::make_unique<FunctionBaseNow>(
-                time(nullptr), std::make_shared<DataTypeDateTime>(extractTimeZoneNameFromFunctionArguments(arguments, 0, 0)));
-        return std::make_unique<FunctionBaseNow>(time(nullptr), std::make_shared<DataTypeDateTime>());
+                time(nullptr), DataTypes{arguments.front().type},
+                std::make_shared<DataTypeDateTime>(extractTimeZoneNameFromFunctionArguments(arguments, 0, 0)));
+
+        return std::make_unique<FunctionBaseNow>(time(nullptr), DataTypes(), std::make_shared<DataTypeDateTime>());
     }
 };
 
diff --git a/src/Functions/now64.cpp b/src/Functions/now64.cpp
index 4a3f4dbfb22..bd1038b1fc6 100644
--- a/src/Functions/now64.cpp
+++ b/src/Functions/now64.cpp
@@ -67,13 +67,13 @@ private:
 class FunctionBaseNow64 : public IFunctionBase
 {
 public:
-    explicit FunctionBaseNow64(Field time_, DataTypePtr return_type_) : time_value(time_), return_type(return_type_) {}
+    explicit FunctionBaseNow64(Field time_, DataTypes argument_types_, DataTypePtr return_type_)
+        : time_value(time_), argument_types(std::move(argument_types_)), return_type(std::move(return_type_)) {}
 
     String getName() const override { return "now64"; }
 
     const DataTypes & getArgumentTypes() const override
     {
-        static const DataTypes argument_types;
         return argument_types;
     }
 
@@ -93,6 +93,7 @@ public:
 
 private:
     Field time_value;
+    DataTypes argument_types;
     DataTypePtr return_type;
 };
 
@@ -139,14 +140,19 @@ public:
         return std::make_shared<DataTypeDateTime64>(scale, timezone_name);
     }
 
-    FunctionBasePtr buildImpl(const ColumnsWithTypeAndName &, const DataTypePtr & result_type) const override
+    FunctionBasePtr buildImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type) const override
     {
         UInt32 scale = DataTypeDateTime64::default_scale;
         auto res_type = removeNullable(result_type);
         if (const auto * type = typeid_cast<const DataTypeDateTime64 *>(res_type.get()))
             scale = type->getScale();
 
-        return std::make_unique<FunctionBaseNow64>(nowSubsecond(scale), result_type);
+        DataTypes arg_types;
+        arg_types.reserve(arguments.size());
+        for (const auto & arg : arguments)
+            arg_types.push_back(arg.type);
+
+        return std::make_unique<FunctionBaseNow64>(nowSubsecond(scale), std::move(arg_types), std::move(result_type));
     }
 };
 
diff --git a/tests/queries/0_stateless/02100_now64_types_bug.reference b/tests/queries/0_stateless/02100_now64_types_bug.reference
new file mode 100644
index 00000000000..ae136939b64
--- /dev/null
+++ b/tests/queries/0_stateless/02100_now64_types_bug.reference
@@ -0,0 +1,3 @@
+2
+1
+0
diff --git a/tests/queries/0_stateless/02100_now64_types_bug.sql b/tests/queries/0_stateless/02100_now64_types_bug.sql
new file mode 100644
index 00000000000..c91defcbf3a
--- /dev/null
+++ b/tests/queries/0_stateless/02100_now64_types_bug.sql
@@ -0,0 +1,8 @@
+SELECT x
+FROM
+(
+    SELECT if((number % NULL) = -2147483648, NULL, if(toInt64(toInt64(now64(if((number % NULL) = -2147483648, NULL, if(toInt64(now64(toInt64(9223372036854775807, now64(h3kRing(NULL, NULL))), h3kRing(NULL, NULL))) = (number % NULL), nan, toFloat64(number))), toInt64(9223372036854775807, toInt64(9223372036854775807, now64(h3kRing(NULL, NULL))), now64(h3kRing(NULL, NULL))), h3kRing(NULL, NULL))), now64(toInt64(9223372036854775807, toInt64(0, now64(h3kRing(NULL, NULL))), now64(h3kRing(NULL, NULL))), h3kRing(NULL, NULL))) = (number % NULL), nan, toFloat64(number))) AS x
+    FROM system.numbers
+    LIMIT 3
+)
+ORDER BY x DESC NULLS LAST