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-rw-r--r--src/test/regress/sql/timetz.sql7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/test/regress/sql/timetz.sql b/src/test/regress/sql/timetz.sql
index f39ea121bf7..7b70f4656c9 100644
--- a/src/test/regress/sql/timetz.sql
+++ b/src/test/regress/sql/timetz.sql
@@ -70,3 +70,10 @@ SELECT EXTRACT(TIMEZONE FROM TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-
SELECT EXTRACT(TIMEZONE_HOUR FROM TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04:30');
SELECT EXTRACT(TIMEZONE_MINUTE FROM TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04:30');
SELECT EXTRACT(EPOCH FROM TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04');
+
+-- date_part implementation is mostly the same as extract, so only
+-- test a few cases for additional coverage.
+SELECT date_part('microsecond', TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04');
+SELECT date_part('millisecond', TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04');
+SELECT date_part('second', TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04');
+SELECT date_part('epoch', TIME WITH TIME ZONE '2020-05-26 13:30:25.575401-04');