diff --git a/src/Interpreters/RowRefs.cpp b/src/Interpreters/RowRefs.cpp
index 7617f589eb7..03abae01453 100644
--- a/src/Interpreters/RowRefs.cpp
+++ b/src/Interpreters/RowRefs.cpp
@@ -39,6 +39,7 @@ void callWithType(TypeIndex which, F && f)
         case TypeIndex::Decimal32: return f(Decimal32());
         case TypeIndex::Decimal64: return f(Decimal64());
         case TypeIndex::Decimal128: return f(Decimal128());
+        case TypeIndex::DateTime64: return f(DateTime64());
         default:
             break;
     }
@@ -153,6 +154,9 @@ std::optional<TypeIndex> AsofRowRefs::getTypeSize(const IColumn & asof_column, s
         case TypeIndex::Decimal128:
             size = sizeof(Decimal128);
             return idx;
+        case TypeIndex::DateTime64:
+            size = sizeof(DateTime64);
+            return idx;
         default:
             break;
     }
diff --git a/src/Interpreters/RowRefs.h b/src/Interpreters/RowRefs.h
index fc035bf626e..8e5141be199 100644
--- a/src/Interpreters/RowRefs.h
+++ b/src/Interpreters/RowRefs.h
@@ -228,7 +228,8 @@ public:
         Entry<Float64>::LookupPtr,
         Entry<Decimal32>::LookupPtr,
         Entry<Decimal64>::LookupPtr,
-        Entry<Decimal128>::LookupPtr>;
+        Entry<Decimal128>::LookupPtr,
+        Entry<DateTime64>::LookupPtr>;
 
     AsofRowRefs() {}
     AsofRowRefs(TypeIndex t);
diff --git a/tests/queries/0_stateless/01553_datetime64_comparison.reference b/tests/queries/0_stateless/01553_datetime64_comparison.reference
index 380b93798ce..07f0dd10d60 100644
--- a/tests/queries/0_stateless/01553_datetime64_comparison.reference
+++ b/tests/queries/0_stateless/01553_datetime64_comparison.reference
@@ -1,3 +1,3 @@
-2019-09-16 19:20:33.123000	2019-09-16 19:20:33.123	0	1	1	1	0
-2015-05-18 07:40:29.123456	2019-09-16 19:20:33.123	0	0	0	1	1
-2019-09-16 19:20:33.123456	2015-05-18 07:40:29.123	1	1	0	0	0
+2015-05-18 07:40:29.123456	2019-09-16 19:20:33.123	0	0	0	1	1	1
+2019-09-16 19:20:33.123000	2019-09-16 19:20:33.123	0	1	1	1	0	0
+2019-09-16 19:20:33.123456	2015-05-18 07:40:29.123	1	1	0	0	0	1
diff --git a/tests/queries/0_stateless/01553_datetime64_comparison.sql b/tests/queries/0_stateless/01553_datetime64_comparison.sql
index 981952d43b4..bc7f9a57032 100644
--- a/tests/queries/0_stateless/01553_datetime64_comparison.sql
+++ b/tests/queries/0_stateless/01553_datetime64_comparison.sql
@@ -14,7 +14,8 @@ SELECT
 	dt6 >= dt3,
 	dt6 =  dt3,
 	dt6 <= dt3,
-	dt6 <  dt3
+	dt6 <  dt3,
+	dt6 != dt3
 FROM datetime64_cmp
 ORDER BY
 	dt6, dt3;