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-rw-r--r--src/test/regress/sql/timestamp.sql3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
index 7307a240927..e011e779ea2 100644
--- a/src/test/regress/sql/timestamp.sql
+++ b/src/test/regress/sql/timestamp.sql
@@ -266,6 +266,9 @@ SELECT date_bin('5 years'::interval, timestamp '2020-02-01 01:01:01', timestamp
-- disallow zero intervals
SELECT date_bin('0 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');
+-- disallow negative intervals
+SELECT date_bin('-2 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');
+
-- Test casting within a BETWEEN qualifier
SELECT d1 - timestamp without time zone '1997-01-02' AS diff
FROM TIMESTAMP_TBL