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f18aa1b203
Block numbers are 32-bit unsigned integers. Therefore, the smallest SQL integer type that they can fit in is bigint. However, in the pageinspect module, most input and output parameters dealing with block numbers were declared as int. The behavior with block numbers larger than a signed 32-bit integer was therefore dubious. Change these arguments to type bigint and add some more explicit error checking on the block range. (Other contrib modules appear to do this correctly already.) Since we are changing argument types of existing functions, in order to not misbehave if the binary is updated before the extension is updated, we need to create new C symbols for the entry points, similar to how it's done in other extensions as well. Reported-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://www.postgresql.org/message-id/flat/d8f6bdd536df403b9b33816e9f7e0b9d@G08CNEXMBPEKD05.g08.fujitsu.local
91 lines
3.8 KiB
SQL
91 lines
3.8 KiB
SQL
CREATE EXTENSION pageinspect;
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CREATE TABLE test1 (a int, b int);
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INSERT INTO test1 VALUES (16777217, 131584);
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VACUUM test1; -- set up FSM
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-- The page contents can vary, so just test that it can be read
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-- successfully, but don't keep the output.
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SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
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SELECT octet_length(get_raw_page('test1', 'main', 1)) AS main_1;
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SELECT octet_length(get_raw_page('test1', 'fsm', 0)) AS fsm_0;
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SELECT octet_length(get_raw_page('test1', 'fsm', 1)) AS fsm_1;
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SELECT octet_length(get_raw_page('test1', 'vm', 0)) AS vm_0;
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SELECT octet_length(get_raw_page('test1', 'vm', 1)) AS vm_1;
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SELECT octet_length(get_raw_page('test1', 'main', -1));
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SELECT octet_length(get_raw_page('xxx', 'main', 0));
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SELECT octet_length(get_raw_page('test1', 'xxx', 0));
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SELECT get_raw_page('test1', 0) = get_raw_page('test1', 'main', 0);
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SELECT pagesize, version FROM page_header(get_raw_page('test1', 0));
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SELECT page_checksum(get_raw_page('test1', 0), 0) IS NOT NULL AS silly_checksum_test;
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SELECT page_checksum(get_raw_page('test1', 0), -1);
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SELECT tuple_data_split('test1'::regclass, t_data, t_infomask, t_infomask2, t_bits)
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FROM heap_page_items(get_raw_page('test1', 0));
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SELECT * FROM fsm_page_contents(get_raw_page('test1', 'fsm', 0));
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-- If we freeze the only tuple on test1, the infomask should
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-- always be the same in all test runs. we show raw flags by
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-- default: HEAP_XMIN_COMMITTED and HEAP_XMIN_INVALID.
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VACUUM FREEZE test1;
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SELECT t_infomask, t_infomask2, raw_flags, combined_flags
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FROM heap_page_items(get_raw_page('test1', 0)),
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LATERAL heap_tuple_infomask_flags(t_infomask, t_infomask2);
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-- output the decoded flag HEAP_XMIN_FROZEN instead
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SELECT t_infomask, t_infomask2, raw_flags, combined_flags
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FROM heap_page_items(get_raw_page('test1', 0)),
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LATERAL heap_tuple_infomask_flags(t_infomask, t_infomask2);
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-- tests for decoding of combined flags
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-- HEAP_XMAX_SHR_LOCK = (HEAP_XMAX_EXCL_LOCK | HEAP_XMAX_KEYSHR_LOCK)
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SELECT * FROM heap_tuple_infomask_flags(x'0050'::int, 0);
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-- HEAP_XMIN_FROZEN = (HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID)
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SELECT * FROM heap_tuple_infomask_flags(x'0300'::int, 0);
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-- HEAP_MOVED = (HEAP_MOVED_IN | HEAP_MOVED_OFF)
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SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
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SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
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-- test all flags of t_infomask and t_infomask2
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SELECT unnest(raw_flags)
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FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
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SELECT unnest(combined_flags)
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FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
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-- no flags at all
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SELECT * FROM heap_tuple_infomask_flags(0, 0);
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-- no combined flags
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SELECT * FROM heap_tuple_infomask_flags(x'0010'::int, 0);
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DROP TABLE test1;
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-- check that using any of these functions with a partitioned table or index
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-- would fail
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create table test_partitioned (a int) partition by range (a);
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create index test_partitioned_index on test_partitioned (a);
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select get_raw_page('test_partitioned', 0); -- error about partitioned table
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select get_raw_page('test_partitioned_index', 0); -- error about partitioned index
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-- a regular table which is a member of a partition set should work though
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create table test_part1 partition of test_partitioned for values from ( 1 ) to (100);
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select get_raw_page('test_part1', 0); -- get farther and error about empty table
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drop table test_partitioned;
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-- check null bitmap alignment for table whose number of attributes is multiple of 8
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create table test8 (f1 int, f2 int, f3 int, f4 int, f5 int, f6 int, f7 int, f8 int);
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insert into test8(f1, f8) values (x'7f00007f'::int, 0);
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select t_bits, t_data from heap_page_items(get_raw_page('test8', 0));
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select tuple_data_split('test8'::regclass, t_data, t_infomask, t_infomask2, t_bits)
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from heap_page_items(get_raw_page('test8', 0));
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drop table test8;
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