should be it

external/duckdb/test/sql/cast/timestamp_date_cast.test

@@ -0,0 +1,41 @@
+# name: test/sql/cast/timestamp_date_cast.test
+# description: Issue #2588: Incorrect result with date conversion
+# group: [cast]
+
+statement ok
+PRAGMA enable_verification
+
+statement ok
+create table test as
+select '2021-02-04 19:30:00'::timestamp t;
+
+query I
+select *
+from test
+where (t::date) = '2021-02-04'::date;
+----
+2021-02-04 19:30:00
+
+query I
+select *
+from test
+where (t::date) = '2021-02-04';
+----
+2021-02-04 19:30:00
+
+# Check that casts to DATE are not invertible
+
+foreach source TIMESTAMP TIMESTAMP_S TIMESTAMP_MS TIMESTAMP_NS
+
+query I
+WITH t AS (
+    SELECT
+        '2020-09-13 00:30:00'::${source} AS a,
+)
+SELECT
+    a::DATE = '2020-09-13'::DATE,
+FROM t;
+----
+true
+
+endloop