222 lines
5.8 KiB
Plaintext
222 lines
5.8 KiB
Plaintext
CREATE TABLE test1 (a int8, b int4range);
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INSERT INTO test1 VALUES (72057594037927937, '[0,1)');
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CREATE INDEX test1_a_idx ON test1 USING btree (a);
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\x
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SELECT * FROM bt_metap('test1_a_idx');
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-[ RECORD 1 ]-------------+-------
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magic | 340322
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version | 4
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root | 1
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level | 0
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fastroot | 1
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fastlevel | 0
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last_cleanup_num_delpages | 0
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last_cleanup_num_tuples | -1
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allequalimage | t
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SELECT * FROM bt_page_stats('test1_a_idx', -1);
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ERROR: invalid block number -1
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SELECT * FROM bt_page_stats('test1_a_idx', 0);
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ERROR: block 0 is a meta page
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SELECT * FROM bt_page_stats('test1_a_idx', 1);
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-[ RECORD 1 ]-+-----
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blkno | 1
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type | l
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live_items | 1
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 8128
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btpo_prev | 0
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btpo_next | 0
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btpo_level | 0
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btpo_flags | 3
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SELECT * FROM bt_page_stats('test1_a_idx', 2);
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ERROR: block number 2 is out of range
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-- bt_multi_page_stats() function returns a set of records of page statistics.
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CREATE TABLE test2 AS (SELECT generate_series(1, 1000)::int8 AS col1);
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CREATE INDEX test2_col1_idx ON test2(col1);
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 0, 1);
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ERROR: block 0 is a meta page
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 1, -1);
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-[ RECORD 1 ]-+-----
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blkno | 1
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type | l
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live_items | 367
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 808
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btpo_prev | 0
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btpo_next | 2
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btpo_level | 0
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btpo_flags | 1
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-[ RECORD 2 ]-+-----
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blkno | 2
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type | l
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live_items | 367
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 808
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btpo_prev | 1
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btpo_next | 4
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btpo_level | 0
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btpo_flags | 1
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-[ RECORD 3 ]-+-----
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blkno | 3
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type | r
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live_items | 3
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dead_items | 0
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avg_item_size | 13
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page_size | 8192
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free_size | 8096
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btpo_prev | 0
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btpo_next | 0
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btpo_level | 1
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btpo_flags | 2
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-[ RECORD 4 ]-+-----
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blkno | 4
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type | l
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live_items | 268
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 2788
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btpo_prev | 2
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btpo_next | 0
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btpo_level | 0
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btpo_flags | 1
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 1, 0);
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(0 rows)
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 1, 2);
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-[ RECORD 1 ]-+-----
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blkno | 1
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type | l
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live_items | 367
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 808
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btpo_prev | 0
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btpo_next | 2
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btpo_level | 0
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btpo_flags | 1
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-[ RECORD 2 ]-+-----
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blkno | 2
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type | l
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live_items | 367
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 808
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btpo_prev | 1
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btpo_next | 4
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btpo_level | 0
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btpo_flags | 1
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 3, 2);
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-[ RECORD 1 ]-+-----
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blkno | 3
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type | r
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live_items | 3
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dead_items | 0
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avg_item_size | 13
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page_size | 8192
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free_size | 8096
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btpo_prev | 0
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btpo_next | 0
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btpo_level | 1
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btpo_flags | 2
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-[ RECORD 2 ]-+-----
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blkno | 4
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type | l
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live_items | 268
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dead_items | 0
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avg_item_size | 16
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page_size | 8192
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free_size | 2788
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btpo_prev | 2
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btpo_next | 0
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btpo_level | 0
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btpo_flags | 1
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SELECT * FROM bt_multi_page_stats('test2_col1_idx', 7, 2);
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ERROR: block number 7 is out of range
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DROP TABLE test2;
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SELECT * FROM bt_page_items('test1_a_idx', -1);
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ERROR: invalid block number -1
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SELECT * FROM bt_page_items('test1_a_idx', 0);
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ERROR: block 0 is a meta page
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SELECT * FROM bt_page_items('test1_a_idx', 1);
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-[ RECORD 1 ]-----------------------
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itemoffset | 1
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ctid | (0,1)
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itemlen | 16
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nulls | f
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vars | f
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data | 01 00 00 00 00 00 00 01
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dead | f
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htid | (0,1)
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tids |
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SELECT * FROM bt_page_items('test1_a_idx', 2);
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ERROR: block number 2 is out of range
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SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', -1));
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ERROR: invalid block number
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SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 0));
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ERROR: block is a meta page
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SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 1));
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-[ RECORD 1 ]-----------------------
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itemoffset | 1
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ctid | (0,1)
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itemlen | 16
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nulls | f
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vars | f
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data | 01 00 00 00 00 00 00 01
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dead | f
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htid | (0,1)
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tids |
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SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 2));
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ERROR: block number 2 is out of range for relation "test1_a_idx"
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-- Failure when using a non-btree index.
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CREATE INDEX test1_a_hash ON test1 USING hash(a);
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SELECT bt_metap('test1_a_hash');
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ERROR: "test1_a_hash" is not a btree index
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SELECT bt_page_stats('test1_a_hash', 0);
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ERROR: "test1_a_hash" is not a btree index
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SELECT bt_page_items('test1_a_hash', 0);
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ERROR: "test1_a_hash" is not a btree index
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SELECT bt_page_items(get_raw_page('test1_a_hash', 0));
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ERROR: block is a meta page
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CREATE INDEX test1_b_gist ON test1 USING gist(b);
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-- Special area of GiST is the same as btree, this complains about inconsistent
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-- leaf data on the page.
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SELECT bt_page_items(get_raw_page('test1_b_gist', 0));
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ERROR: block is not a valid btree leaf page
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-- Several failure modes.
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-- Suppress the DETAIL message, to allow the tests to work across various
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-- page sizes and architectures.
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\set VERBOSITY terse
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-- invalid page size
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SELECT bt_page_items('aaa'::bytea);
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ERROR: invalid page size
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-- invalid special area size
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CREATE INDEX test1_a_brin ON test1 USING brin(a);
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SELECT bt_page_items(get_raw_page('test1', 0));
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ERROR: input page is not a valid btree page
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SELECT bt_page_items(get_raw_page('test1_a_brin', 0));
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ERROR: input page is not a valid btree page
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\set VERBOSITY default
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-- Tests with all-zero pages.
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SHOW block_size \gset
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SELECT bt_page_items(decode(repeat('00', :block_size), 'hex'));
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-[ RECORD 1 ]-+-
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bt_page_items |
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DROP TABLE test1;
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