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-rw-r--r--src/test/regress/sql/create_index_spgist.sql4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/test/regress/sql/create_index_spgist.sql b/src/test/regress/sql/create_index_spgist.sql
index 66d77286356..68632e3732e 100644
--- a/src/test/regress/sql/create_index_spgist.sql
+++ b/src/test/regress/sql/create_index_spgist.sql
@@ -225,6 +225,10 @@ SELECT * FROM quad_point_tbl_ord_seq3 seq FULL JOIN kd_point_tbl_ord_idx3 idx
ON seq.n = idx.n
WHERE seq.dist IS DISTINCT FROM idx.dist;
+-- check ORDER BY distance to NULL
+SELECT (SELECT p FROM kd_point_tbl ORDER BY p <-> pt, p <-> '0,0' LIMIT 1)
+FROM (VALUES (point '1,2'), (NULL), ('1234,5678')) pts(pt);
+
EXPLAIN (COSTS OFF)
SELECT count(*) FROM radix_text_tbl WHERE t = 'P0123456789abcdef';