Subject: [PATCH] Cover get_json_table_plan() with tests

From: Aleksander Alekseev <[email-masked]>
Date: Fri, 10 Jul 2026 16:44:06 +0300

Hi,

I noticed that get_json_table_plan() is never executed by the existing
tests. The proposed patch fixes this.

-- 
Best regards,
Aleksander Alekseev
From a99b5e95dd095a04886b81f4ae3a7de94664fb70 Mon Sep 17 00:00:00 2001
From: Aleksander Alekseev <[email-masked]>
Date: Fri, 10 Jul 2026 16:27:54 +0300
Subject: [PATCH v1] Cover get_json_table_plan() with tests

Function get_json_table() executes get_json_table_plan() only when
json_table_plan_is_default() == false. For this reason the existing tests
didn't cover get_json_table_plan() before.

Author: Aleksander Alekseev <[email-masked]>
Reviewed-by: TODO FIXME
Discussion: TODO FIXME
---
 .../regress/expected/sqljson_jsontable.out    | 55 +++++++++++++++++++
 src/test/regress/sql/sqljson_jsontable.sql    | 22 ++++++++
 2 files changed, 77 insertions(+)

diff --git a/src/test/regress/expected/sqljson_jsontable.out b/src/test/regress/expected/sqljson_jsontable.out
index 1530ef8afe0..fc8e8d7e1a7 100644
--- a/src/test/regress/expected/sqljson_jsontable.out
+++ b/src/test/regress/expected/sqljson_jsontable.out
@@ -1847,3 +1847,58 @@ CREATE OR REPLACE VIEW public.json_table_view9 AS
             )
         )
 DROP VIEW json_table_view8, json_table_view9;
+-- Test get_json_table_plan()
+-- covers the INNER branch and the UNION branch
+CREATE VIEW jt_plan_inner_union AS
+SELECT * FROM JSON_TABLE(
+    jsonb 'null', '$' AS p
+    COLUMNS (NESTED PATH '$[*]' AS p1 COLUMNS (a int),
+             NESTED PATH '$[*]' AS p2 COLUMNS (b int))
+    PLAN (p INNER (p1 UNION p2))
+);
+\sv jt_plan_inner_union
+CREATE OR REPLACE VIEW public.jt_plan_inner_union AS
+ SELECT a,
+    b
+   FROM JSON_TABLE(
+            'null'::jsonb, '$' AS p
+            COLUMNS (
+                NESTED PATH '$[*]' AS p1
+                COLUMNS (
+                    a integer PATH '$."a"'
+                ),
+                NESTED PATH '$[*]' AS p2
+                COLUMNS (
+                    b integer PATH '$."b"'
+                )
+            )
+            PLAN (p INNER (p1 UNION p2))
+        )
+DROP VIEW jt_plan_inner_union;
+-- covers the OUTER branch and the CROSS branch
+CREATE VIEW jt_plan_outer_cross AS
+SELECT * FROM JSON_TABLE(
+    jsonb 'null', '$' AS p
+    COLUMNS (NESTED PATH '$[*]' AS p1 COLUMNS (a int),
+             NESTED PATH '$[*]' AS p2 COLUMNS (b int))
+    PLAN (p OUTER (p1 CROSS p2))
+);
+\sv jt_plan_outer_cross
+CREATE OR REPLACE VIEW public.jt_plan_outer_cross AS
+ SELECT a,
+    b
+   FROM JSON_TABLE(
+            'null'::jsonb, '$' AS p
+            COLUMNS (
+                NESTED PATH '$[*]' AS p1
+                COLUMNS (
+                    a integer PATH '$."a"'
+                ),
+                NESTED PATH '$[*]' AS p2
+                COLUMNS (
+                    b integer PATH '$."b"'
+                )
+            )
+            PLAN (p OUTER (p1 CROSS p2))
+        )
+DROP VIEW jt_plan_outer_cross;
diff --git a/src/test/regress/sql/sqljson_jsontable.sql b/src/test/regress/sql/sqljson_jsontable.sql
index d71d57e99b2..74903a75fc8 100644
--- a/src/test/regress/sql/sqljson_jsontable.sql
+++ b/src/test/regress/sql/sqljson_jsontable.sql
@@ -1004,3 +1004,25 @@ CREATE VIEW json_table_view9 AS SELECT * from JSON_TABLE('"a"', '$' COLUMNS (a t
 \sv json_table_view9;
 
 DROP VIEW json_table_view8, json_table_view9;
+
+-- Test get_json_table_plan()
+-- covers the INNER branch and the UNION branch
+CREATE VIEW jt_plan_inner_union AS
+SELECT * FROM JSON_TABLE(
+    jsonb 'null', '$' AS p
+    COLUMNS (NESTED PATH '$[*]' AS p1 COLUMNS (a int),
+             NESTED PATH '$[*]' AS p2 COLUMNS (b int))
+    PLAN (p INNER (p1 UNION p2))
+);
+\sv jt_plan_inner_union
+DROP VIEW jt_plan_inner_union;
+-- covers the OUTER branch and the CROSS branch
+CREATE VIEW jt_plan_outer_cross AS
+SELECT * FROM JSON_TABLE(
+    jsonb 'null', '$' AS p
+    COLUMNS (NESTED PATH '$[*]' AS p1 COLUMNS (a int),
+             NESTED PATH '$[*]' AS p2 COLUMNS (b int))
+    PLAN (p OUTER (p1 CROSS p2))
+);
+\sv jt_plan_outer_cross
+DROP VIEW jt_plan_outer_cross;
-- 
2.43.0