127 lines
4.8 KiB
SQL
127 lines
4.8 KiB
SQL
CREATE EXTENSION pgstattuple;
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--
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-- It's difficult to come up with platform-independent test cases for
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-- the pgstattuple functions, but the results for empty tables and
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-- indexes should be that.
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--
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create table test (a int primary key, b int[]);
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select * from pgstattuple('test');
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select * from pgstattuple('test'::text);
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select * from pgstattuple('test'::name);
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select * from pgstattuple('test'::regclass);
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select pgstattuple(oid) from pg_class where relname = 'test';
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select pgstattuple(relname) from pg_class where relname = 'test';
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select version, tree_level,
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index_size / current_setting('block_size')::int as index_size,
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root_block_no, internal_pages, leaf_pages, empty_pages, deleted_pages,
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avg_leaf_density, leaf_fragmentation
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from pgstatindex('test_pkey');
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select version, tree_level,
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index_size / current_setting('block_size')::int as index_size,
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root_block_no, internal_pages, leaf_pages, empty_pages, deleted_pages,
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avg_leaf_density, leaf_fragmentation
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from pgstatindex('test_pkey'::text);
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select version, tree_level,
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index_size / current_setting('block_size')::int as index_size,
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root_block_no, internal_pages, leaf_pages, empty_pages, deleted_pages,
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avg_leaf_density, leaf_fragmentation
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from pgstatindex('test_pkey'::name);
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select version, tree_level,
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index_size / current_setting('block_size')::int as index_size,
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root_block_no, internal_pages, leaf_pages, empty_pages, deleted_pages,
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avg_leaf_density, leaf_fragmentation
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from pgstatindex('test_pkey'::regclass);
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select pg_relpages('test');
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select pg_relpages('test_pkey');
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select pg_relpages('test_pkey'::text);
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select pg_relpages('test_pkey'::name);
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select pg_relpages('test_pkey'::regclass);
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select pg_relpages(oid) from pg_class where relname = 'test_pkey';
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select pg_relpages(relname) from pg_class where relname = 'test_pkey';
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create index test_ginidx on test using gin (b);
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select * from pgstatginindex('test_ginidx');
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create index test_hashidx on test using hash (b);
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select * from pgstathashindex('test_hashidx');
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-- these should error with the wrong type
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select pgstatginindex('test_pkey');
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select pgstathashindex('test_pkey');
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select pgstatindex('test_ginidx');
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select pgstathashindex('test_ginidx');
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select pgstatindex('test_hashidx');
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select pgstatginindex('test_hashidx');
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-- check that using any of these functions with unsupported relations will 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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create index test_partitioned_hash_index on test_partitioned using hash(a);
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-- these should all fail
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select pgstattuple('test_partitioned');
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select pgstattuple('test_partitioned_index');
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select pgstattuple_approx('test_partitioned');
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select pg_relpages('test_partitioned');
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select pgstatindex('test_partitioned');
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select pgstatginindex('test_partitioned');
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select pgstathashindex('test_partitioned');
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select pgstathashindex('test_partitioned_hash_index');
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create view test_view as select 1;
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-- these should all fail
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select pgstattuple('test_view');
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select pgstattuple_approx('test_view');
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select pg_relpages('test_view');
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select pgstatindex('test_view');
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select pgstatginindex('test_view');
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select pgstathashindex('test_view');
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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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-- these should all fail
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select pgstattuple('test_foreign_table');
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select pgstattuple_approx('test_foreign_table');
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select pg_relpages('test_foreign_table');
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select pgstatindex('test_foreign_table');
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select pgstatginindex('test_foreign_table');
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select pgstathashindex('test_foreign_table');
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-- a partition of a partitioned table should work though
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create table test_partition partition of test_partitioned for values from (1) to (100);
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select pgstattuple('test_partition');
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select pgstattuple_approx('test_partition');
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select pg_relpages('test_partition');
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-- toast tables should work
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select pgstattuple((select reltoastrelid from pg_class where relname = 'test'));
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select pgstattuple_approx((select reltoastrelid from pg_class where relname = 'test'));
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select pg_relpages((select reltoastrelid from pg_class where relname = 'test'));
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-- not for the index calls though, of course
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select pgstatindex('test_partition');
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select pgstatginindex('test_partition');
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select pgstathashindex('test_partition');
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-- an actual index of a partitioned table should work though
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create index test_partition_idx on test_partition(a);
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create index test_partition_hash_idx on test_partition using hash (a);
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-- these should work
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select pgstatindex('test_partition_idx');
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select pgstathashindex('test_partition_hash_idx');
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drop table test_partitioned;
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drop view test_view;
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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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