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779972e534
While we haven't observed any test instability, it seems like a good idea to disable autovacuum during the stats import tests. Author: Corey Huinker Discussion: https://postgr.es/m/CADkLM=fajh1Lpcyr_XsMmq-9Z=SGk-u+_Zeac7Pt0RAN3uiVCg@mail.gmail.com
125 lines
3.2 KiB
SQL
125 lines
3.2 KiB
SQL
CREATE SCHEMA stats_import;
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CREATE TYPE stats_import.complex_type AS (
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a integer,
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b real,
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c text,
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d date,
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e jsonb);
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CREATE TABLE stats_import.test(
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id INTEGER PRIMARY KEY,
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name text,
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comp stats_import.complex_type,
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arange int4range,
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tags text[]
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) WITH (autovacuum_enabled = false);
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-- starting stats
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SELECT relpages, reltuples, relallvisible
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FROM pg_class
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WHERE oid = 'stats_import.test'::regclass;
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-- error: regclass not found
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 0::Oid,
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relpages => 17::integer,
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reltuples => 400.0::real,
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relallvisible => 4::integer);
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-- relpages default
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.test'::regclass,
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relpages => NULL::integer,
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reltuples => 400.0::real,
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relallvisible => 4::integer);
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-- reltuples default
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.test'::regclass,
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relpages => 17::integer,
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reltuples => NULL::real,
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relallvisible => 4::integer);
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-- relallvisible default
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.test'::regclass,
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relpages => 17::integer,
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reltuples => 400.0::real,
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relallvisible => NULL::integer);
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-- named arguments
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.test'::regclass,
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relpages => 17::integer,
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reltuples => 400.0::real,
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relallvisible => 4::integer);
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SELECT relpages, reltuples, relallvisible
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FROM pg_class
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WHERE oid = 'stats_import.test'::regclass;
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-- positional arguments
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SELECT
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pg_catalog.pg_set_relation_stats(
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'stats_import.test'::regclass,
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18::integer,
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401.0::real,
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5::integer);
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SELECT relpages, reltuples, relallvisible
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FROM pg_class
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WHERE oid = 'stats_import.test'::regclass;
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-- clear
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SELECT
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pg_catalog.pg_clear_relation_stats(
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'stats_import.test'::regclass);
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SELECT relpages, reltuples, relallvisible
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FROM pg_class
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WHERE oid = 'stats_import.test'::regclass;
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-- invalid relkinds for statistics
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CREATE SEQUENCE stats_import.testseq;
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CREATE VIEW stats_import.testview AS SELECT * FROM stats_import.test;
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SELECT
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pg_catalog.pg_clear_relation_stats(
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'stats_import.testseq'::regclass);
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SELECT
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pg_catalog.pg_clear_relation_stats(
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'stats_import.testview'::regclass);
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-- relpages may be -1 for partitioned tables
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CREATE TABLE stats_import.part_parent ( i integer ) PARTITION BY RANGE(i);
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CREATE TABLE stats_import.part_child_1
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PARTITION OF stats_import.part_parent
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FOR VALUES FROM (0) TO (10)
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WITH (autovacuum_enabled = false);
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ANALYZE stats_import.part_parent;
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SELECT relpages
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FROM pg_class
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WHERE oid = 'stats_import.part_parent'::regclass;
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-- although partitioned tables have no storage, setting relpages to a
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-- positive value is still allowed
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.part_parent'::regclass,
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relpages => 2::integer);
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-- nothing stops us from setting it to -1
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SELECT
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pg_catalog.pg_set_relation_stats(
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relation => 'stats_import.part_parent'::regclass,
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relpages => -1::integer);
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DROP SCHEMA stats_import CASCADE;
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