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c08d82f38e
The contrib extensions pageinspect, pg_visibility and pgstattuple only work against regular relations which have storage. They don't work against foreign tables, partitioned (parent) tables, views, et al. Add checks to the user-callable functions to return a useful error message to the user if they mistakenly pass an invalid relation to a function which doesn't accept that kind of relation. In passing, improve some of the existing checks to use ereport() instead of elog(), add a function to consolidate common checks where appropriate, and add some regression tests. Author: Amit Langote, with various changes by me Reviewed by: Michael Paquier and Corey Huinker Discussion: https://postgr.es/m/ab91fd9d-4751-ee77-c87b-4dd704c1e59c@lab.ntt.co.jp
84 lines
3.2 KiB
SQL
84 lines
3.2 KiB
SQL
CREATE EXTENSION pg_visibility;
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--
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-- check that using the module's functions with unsupported relations will fail
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--
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-- partitioned tables (the parent ones) don't have visibility maps
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create table test_partitioned (a int) partition by list (a);
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-- these should all fail
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select pg_visibility('test_partitioned', 0);
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select pg_visibility_map('test_partitioned');
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select pg_visibility_map_summary('test_partitioned');
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select pg_check_frozen('test_partitioned');
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select pg_truncate_visibility_map('test_partitioned');
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create table test_partition partition of test_partitioned for values in (1);
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create index test_index on test_partition (a);
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-- indexes do not, so these all fail
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select pg_visibility('test_index', 0);
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select pg_visibility_map('test_index');
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select pg_visibility_map_summary('test_index');
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select pg_check_frozen('test_index');
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select pg_truncate_visibility_map('test_index');
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create view test_view as select 1;
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-- views do not have VMs, so these all fail
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select pg_visibility('test_view', 0);
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select pg_visibility_map('test_view');
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select pg_visibility_map_summary('test_view');
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select pg_check_frozen('test_view');
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select pg_truncate_visibility_map('test_view');
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create sequence test_sequence;
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-- sequences do not have VMs, so these all fail
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select pg_visibility('test_sequence', 0);
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select pg_visibility_map('test_sequence');
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select pg_visibility_map_summary('test_sequence');
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select pg_check_frozen('test_sequence');
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select pg_truncate_visibility_map('test_sequence');
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create foreign data wrapper dummy;
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create server dummy_server foreign data wrapper dummy;
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create foreign table test_foreign_table () server dummy_server;
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-- foreign tables do not have VMs, so these all fail
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select pg_visibility('test_foreign_table', 0);
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select pg_visibility_map('test_foreign_table');
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select pg_visibility_map_summary('test_foreign_table');
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select pg_check_frozen('test_foreign_table');
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select pg_truncate_visibility_map('test_foreign_table');
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-- check some of the allowed relkinds
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create table regular_table (a int);
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insert into regular_table values (1), (2);
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vacuum regular_table;
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select count(*) > 0 from pg_visibility('regular_table');
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truncate regular_table;
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select count(*) > 0 from pg_visibility('regular_table');
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create materialized view matview_visibility_test as select * from regular_table;
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vacuum matview_visibility_test;
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select count(*) > 0 from pg_visibility('matview_visibility_test');
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insert into regular_table values (1), (2);
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refresh materialized view matview_visibility_test;
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select count(*) > 0 from pg_visibility('matview_visibility_test');
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-- regular tables which are part of a partition *do* have visibility maps
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insert into test_partition values (1);
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vacuum test_partition;
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select count(*) > 0 from pg_visibility('test_partition', 0);
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select count(*) > 0 from pg_visibility_map('test_partition');
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select count(*) > 0 from pg_visibility_map_summary('test_partition');
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select * from pg_check_frozen('test_partition'); -- hopefully none
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select pg_truncate_visibility_map('test_partition');
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-- cleanup
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drop table test_partitioned;
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drop view test_view;
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drop sequence test_sequence;
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drop foreign table test_foreign_table;
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drop server dummy_server;
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drop foreign data wrapper dummy;
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drop materialized view matview_visibility_test;
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drop table regular_table;
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