From e448384c6b3dd8516fb8fca62e417777af9a9f77 Mon Sep 17 00:00:00 2001
From: Aleksander Alekseev <aleksander@tigerdata.com>
Date: Fri, 10 Jul 2026 16:27:54 +0300
Subject: [PATCH v2] 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 <aleksander@tigerdata.com>
Reviewed-by: TODO FIXME
Discussion: https://postgr.es/m/CAJ7c6TP0kgaN1Hjtj1PYtQVF0vyr+ce01oAx9Li_UpGDG2NMmA@mail.gmail.com
---
 .../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 ae64dbed303..98e020f0221 100644
--- a/src/test/regress/expected/sqljson_jsontable.out
+++ b/src/test/regress/expected/sqljson_jsontable.out
@@ -1926,3 +1926,58 @@ CREATE OR REPLACE VIEW public.json_table_view_on_empty AS
             ) ERROR ON ERROR
         )
 DROP VIEW json_table_view_on_empty;
+-- 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 2a33aaec57f..ae833eec32d 100644
--- a/src/test/regress/sql/sqljson_jsontable.sql
+++ b/src/test/regress/sql/sqljson_jsontable.sql
@@ -1052,3 +1052,25 @@ SELECT * FROM JSON_TABLE(jsonb '{}', '$' AS p0
 \sv json_table_view_on_empty;
 
 DROP VIEW json_table_view_on_empty;
+
+-- 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