From 756ab29124d7850d4392e2227b67b69b61576cd6 Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas
Date: Wed, 13 Jan 2021 10:33:33 +0200
Subject: Add functions to 'pageinspect' to inspect GiST indexes.

Author: Andrey Borodin and me
Discussion: https://www.postgresql.org/message-id/3E4F9093-A1B5-4DF8-A292-0B48692E3954%40yandex-team.ru
---
 contrib/pageinspect/sql/gist.sql | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 contrib/pageinspect/sql/gist.sql

(limited to 'contrib/pageinspect/sql/gist.sql')

diff --git a/contrib/pageinspect/sql/gist.sql b/contrib/pageinspect/sql/gist.sql
new file mode 100644
index 00000000000..b38da4cb033
--- /dev/null
+++ b/contrib/pageinspect/sql/gist.sql
@@ -0,0 +1,18 @@
+CREATE TABLE test_gist AS SELECT point(i,i) p, i::text t FROM
+    generate_series(1,1000) i;
+CREATE INDEX test_gist_idx ON test_gist USING gist (p);
+
+-- Page 0 is the root, the rest are leaf pages
+SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 0));
+SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 1));
+SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 2));
+
+SELECT * FROM gist_page_items(get_raw_page('test_gist_idx', 0), 'test_gist_idx');
+SELECT * FROM gist_page_items(get_raw_page('test_gist_idx', 1), 'test_gist_idx') LIMIT 5;
+SELECT * FROM gist_page_items(get_raw_page('test_gist_idx', 2), 'test_gist_idx') LIMIT 5;
+
+SELECT * FROM gist_page_items_bytea(get_raw_page('test_gist_idx', 0));
+SELECT * FROM gist_page_items_bytea(get_raw_page('test_gist_idx', 1)) LIMIT 5;
+SELECT * FROM gist_page_items_bytea(get_raw_page('test_gist_idx', 2)) LIMIT 5;
+
+DROP TABLE test_gist;
-- 
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