2 files changed, 18 insertions, 0 deletions
diff --git a/src/test/regress/expected/create_index.out b/src/test/regress/expected/create_index.out
index f13b4f8a08d..f6f55163211 100644
--- a/src/test/regress/expected/create_index.out
+++ b/src/test/regress/expected/create_index.out
@@ -2771,3 +2771,14 @@ ORDER BY thousand;
         1 |     1001
 (2 rows)
 
+--
+-- Check elimination of constant-NULL subexpressions
+--
+explain (costs off)
+  select * from tenk1 where (thousand, tenthous) in ((1,1001), (null,null));
+                      QUERY PLAN                      
+------------------------------------------------------
+ Index Scan using tenk1_thous_tenthous on tenk1
+   Index Cond: ((thousand = 1) AND (tenthous = 1001))
+(2 rows)
+
diff --git a/src/test/regress/sql/create_index.sql b/src/test/regress/sql/create_index.sql
index cd5c58d468c..d4d24ef82b4 100644
--- a/src/test/regress/sql/create_index.sql
+++ b/src/test/regress/sql/create_index.sql
@@ -931,3 +931,10 @@ ORDER BY thousand;
 SELECT thousand, tenthous FROM tenk1
 WHERE thousand < 2 AND tenthous IN (1001,3000)
 ORDER BY thousand;
+
+--
+-- Check elimination of constant-NULL subexpressions
+--
+
+explain (costs off)
+  select * from tenk1 where (thousand, tenthous) in ((1,1001), (null,null));