From 8c454ae15b18de8d36e83487246b36b144d629e2 Mon Sep 17 00:00:00 2001
From: Andrew Lamb <andrew@nerdnetworks.org>
Date: Wed, 7 Dec 2022 14:02:43 -0500
Subject: [PATCH 1/2] Add tests for coercion of timestamps to strings

---
 .../sqllogictests/test_files/timestamps.slt   | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 datafusion/core/tests/sqllogictests/test_files/timestamps.slt

diff --git a/datafusion/core/tests/sqllogictests/test_files/timestamps.slt b/datafusion/core/tests/sqllogictests/test_files/timestamps.slt
new file mode 100644
index 0000000000000..5bd3b340ab620
--- /dev/null
+++ b/datafusion/core/tests/sqllogictests/test_files/timestamps.slt
@@ -0,0 +1,66 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
+##########
+## DDL Tests
+##########
+
+statement ok
+create table foo (val int, ts timestamp) as values (1, '2000-01-01T00:00:00'::timestamp), (2, '2000-02-01T00:00:00'::timestamp), (3, '2000-03-01T00:00:00'::timestamp);
+
+query C rowsort
+select * from foo;
+----
+1 2000-01-01T00:00:00.000000000
+2 2000-02-01T00:00:00.000000000
+3 2000-03-01T00:00:00.000000000
+
+# Test that we can compare a timestamp to a casted string
+query C rowsort
+select * from foo where ts > '2000-01-01T00:00:00'::timestamp;
+----
+2 2000-02-01T00:00:00.000000000
+3 2000-03-01T00:00:00.000000000
+
+# Test that we can compare a timestamp to a string and it will be coerced
+query C rowsort
+select * from foo where ts > '2000-01-01T00:00:00';
+----
+2 2000-02-01T00:00:00.000000000
+3 2000-03-01T00:00:00.000000000
+
+query C rowsort
+select * from foo where ts < '2000-02-01T00:00:00';
+----
+1 2000-01-01T00:00:00.000000000
+
+query C rowsort
+select * from foo where ts <= '2000-02-01T00:00:00';
+----
+1 2000-01-01T00:00:00.000000000
+2 2000-02-01T00:00:00.000000000
+
+query C rowsort
+select * from foo where ts = '2000-02-01T00:00:00';
+----
+2 2000-02-01T00:00:00.000000000
+
+query C rowsort
+select * from foo where ts != '2000-02-01T00:00:00';
+----
+1 2000-01-01T00:00:00.000000000
+3 2000-03-01T00:00:00.000000000

From 01698fbd39328a833e2cc18e6eaf205ee2af5e52 Mon Sep 17 00:00:00 2001
From: Andrew Lamb <andrew@nerdnetworks.org>
Date: Thu, 8 Dec 2022 07:16:29 -0500
Subject: [PATCH 2/2] Update
 datafusion/core/tests/sqllogictests/test_files/timestamps.slt

---
 datafusion/core/tests/sqllogictests/test_files/timestamps.slt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/datafusion/core/tests/sqllogictests/test_files/timestamps.slt b/datafusion/core/tests/sqllogictests/test_files/timestamps.slt
index 5bd3b340ab620..f4d627df4523d 100644
--- a/datafusion/core/tests/sqllogictests/test_files/timestamps.slt
+++ b/datafusion/core/tests/sqllogictests/test_files/timestamps.slt
@@ -16,7 +16,7 @@
 # under the License.
 
 ##########
-## DDL Tests
+## Timestamp Handling Tests
 ##########
 
 statement ok