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-- test old extension version entry points
DROP EXTENSION pageinspect;
CREATE EXTENSION pageinspect VERSION '1.8';
CREATE TABLE test1 (a int8, b text);
INSERT INTO test1 VALUES (72057594037927937, 'text');
CREATE INDEX test1_a_idx ON test1 USING btree (a);
-- from page.sql
SELECT octet_length(get_raw_page('test1', 0)) AS main_0;
main_0
--------
8192
(1 row)
SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
main_0
--------
8192
(1 row)
SELECT page_checksum(get_raw_page('test1', 0), 0) IS NOT NULL AS silly_checksum_test;
silly_checksum_test
---------------------
t
(1 row)
-- from btree.sql
SELECT * FROM bt_page_stats('test1_a_idx', 1);
blkno | type | live_items | dead_items | avg_item_size | page_size | free_size | btpo_prev | btpo_next | btpo | btpo_flags
-------+------+------------+------------+---------------+-----------+-----------+-----------+-----------+------+------------
1 | l | 1 | 0 | 16 | 8192 | 8128 | 0 | 0 | 0 | 3
(1 row)
SELECT * FROM bt_page_items('test1_a_idx', 1);
itemoffset | ctid | itemlen | nulls | vars | data | dead | htid | tids
------------+-------+---------+-------+------+-------------------------+------+-------+------
1 | (0,1) | 16 | f | f | 01 00 00 00 00 00 00 01 | f | (0,1) |
(1 row)
-- page_header() uses int instead of smallint for lower, upper, special and
-- pagesize in pageinspect >= 1.10.
ALTER EXTENSION pageinspect UPDATE TO '1.9';
\df page_header
List of functions
Schema | Name | Result data type | Argument data types | Type
--------+-------------+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------
public | page_header | record | page bytea, OUT lsn pg_lsn, OUT checksum smallint, OUT flags smallint, OUT lower smallint, OUT upper smallint, OUT special smallint, OUT pagesize smallint, OUT version smallint, OUT prune_xid xid | func
(1 row)
SELECT pagesize, version FROM page_header(get_raw_page('test1', 0));
pagesize | version
----------+---------
8192 | 4
(1 row)
DROP TABLE test1;
DROP EXTENSION pageinspect;
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