1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
CREATE TABLE test1 (a int8, b text);
INSERT INTO test1 VALUES (72057594037927937, 'text');
CREATE INDEX test1_a_idx ON test1 USING btree (a);
\x
SELECT * FROM bt_metap('test1_a_idx');
-[ RECORD 1 ]-----------+-------
magic | 340322
version | 4
root | 1
level | 0
fastroot | 1
fastlevel | 0
oldest_xact | 0
last_cleanup_num_tuples | -1
allequalimage | t
SELECT * FROM bt_page_stats('test1_a_idx', 0);
ERROR: block 0 is a meta page
SELECT * FROM bt_page_stats('test1_a_idx', 1);
-[ RECORD 1 ]-+-----
blkno | 1
type | l
live_items | 1
dead_items | 0
avg_item_size | 16
page_size | 8192
free_size | 8128
btpo_prev | 0
btpo_next | 0
btpo | 0
btpo_flags | 3
SELECT * FROM bt_page_stats('test1_a_idx', 2);
ERROR: block number out of range
SELECT * FROM bt_page_items('test1_a_idx', 0);
ERROR: block 0 is a meta page
SELECT * FROM bt_page_items('test1_a_idx', 1);
-[ RECORD 1 ]-----------------------
itemoffset | 1
ctid | (0,1)
itemlen | 16
nulls | f
vars | f
data | 01 00 00 00 00 00 00 01
dead | f
htid | (0,1)
tids |
SELECT * FROM bt_page_items('test1_a_idx', 2);
ERROR: block number out of range
SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 0));
ERROR: block is a meta page
SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 1));
-[ RECORD 1 ]-----------------------
itemoffset | 1
ctid | (0,1)
itemlen | 16
nulls | f
vars | f
data | 01 00 00 00 00 00 00 01
dead | f
htid | (0,1)
tids |
SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 2));
ERROR: block number 2 is out of range for relation "test1_a_idx"
DROP TABLE test1;
|
