mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-16 02:23:49 +08:00
72588a2382
Primary and unqiue constraints are limited to segment_by and order_by columns and foreign key constraints are limited to segment_by columns when creating a compressed hypertable. There are no restrictions on check constraints.
165 lines
9.7 KiB
SQL
165 lines
9.7 KiB
SQL
-- This file and its contents are licensed under the Timescale License.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-TIMESCALE for a copy of the license.
|
|
|
|
\set ON_ERROR_STOP 0
|
|
|
|
--table with special column names --
|
|
create table foo2 (a integer, "bacB toD" integer, c integer, d integer);
|
|
select table_name from create_hypertable('foo2', 'a', chunk_time_interval=> 10);
|
|
|
|
create table foo3 (a integer, "bacB toD" integer, c integer, d integer);
|
|
select table_name from create_hypertable('foo3', 'a', chunk_time_interval=> 10);
|
|
|
|
create table non_compressed (a integer, "bacB toD" integer, c integer, d integer);
|
|
select table_name from create_hypertable('non_compressed', 'a', chunk_time_interval=> 10);
|
|
insert into non_compressed values( 3 , 16 , 20, 4);
|
|
|
|
ALTER TABLE foo2 set (timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'c');
|
|
ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'c');
|
|
ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'd DESC');
|
|
ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'd');
|
|
|
|
--note that the time column "a" should be added to the end of the orderby list
|
|
select * from _timescaledb_catalog.hypertable_compression order by attname;
|
|
|
|
ALTER TABLE foo3 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'd DeSc NullS lAsT');
|
|
|
|
-- Negative test cases ---
|
|
|
|
ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c');
|
|
ALTER TABLE foo2 set (timescaledb.compress='f');
|
|
|
|
|
|
create table reserved_column_prefix (a integer, _ts_meta_foo integer, "bacB toD" integer, c integer, d integer);
|
|
select table_name from create_hypertable('reserved_column_prefix', 'a', chunk_time_interval=> 10);
|
|
ALTER TABLE reserved_column_prefix set (timescaledb.compress);
|
|
|
|
--basic test with count
|
|
create table foo (a integer, b integer, c integer, t text, p point);
|
|
select table_name from create_hypertable('foo', 'a', chunk_time_interval=> 10);
|
|
|
|
insert into foo values( 3 , 16 , 20);
|
|
insert into foo values( 10 , 10 , 20);
|
|
insert into foo values( 20 , 11 , 20);
|
|
insert into foo values( 30 , 12 , 20);
|
|
|
|
-- should error out --
|
|
ALTER TABLE foo ALTER b SET NOT NULL, set (timescaledb.compress);
|
|
|
|
ALTER TABLE foo ALTER b SET NOT NULL;
|
|
select attname, attnotnull from pg_attribute where attrelid = (select oid from pg_class where relname like 'foo') and attname like 'b';
|
|
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'd');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'd');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls thirsty');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c climb nulls first');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c nulls first asC');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls first asc');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc hurry');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c descend');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c; SELECT 1');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = '1,2');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c + 1');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'random()');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c LIMIT 1');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c USING <');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 't COLLATE "en_US"');
|
|
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c asc' , timescaledb.compress_orderby = 'c');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c nulls last');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c + 1');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'random()');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c LIMIT 1');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c + b');
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, p');
|
|
|
|
--should succeed
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, b');
|
|
--note that the time column "a" should not be added to the end of the order by list again (should appear first)
|
|
select hc.* from _timescaledb_catalog.hypertable_compression hc inner join _timescaledb_catalog.hypertable h on (h.id = hc.hypertable_id) where h.table_name = 'foo' order by attname;
|
|
|
|
select decompress_chunk(ch1.schema_name|| '.' || ch1.table_name)
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht where ch1.hypertable_id = ht.id and ht.table_name like 'foo' ORDER BY ch1.id limit 1;
|
|
|
|
--test changing the segment by columns
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a', timescaledb.compress_segmentby = 'b');
|
|
|
|
select ch1.schema_name|| '.' || ch1.table_name AS "CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht where ch1.hypertable_id = ht.id and ht.table_name like 'foo' ORDER BY ch1.id limit 1 \gset
|
|
|
|
--should succeed
|
|
select compress_chunk(:'CHUNK_NAME');
|
|
select compress_chunk(:'CHUNK_NAME');
|
|
|
|
select compress_chunk(ch1.schema_name|| '.' || ch1.table_name)
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht where ch1.hypertable_id = ht.id and ht.table_name like 'non_compressed' ORDER BY ch1.id limit 1;
|
|
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a', timescaledb.compress_segmentby = 'c');
|
|
|
|
select decompress_chunk(ch1.schema_name|| '.' || ch1.table_name)
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht where ch1.hypertable_id = ht.id and ht.table_name like 'non_compressed' ORDER BY ch1.id limit 1;
|
|
|
|
--should succeed
|
|
select decompress_chunk(ch1.schema_name|| '.' || ch1.table_name)
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht where ch1.hypertable_id = ht.id and ht.table_name like 'foo' and ch1.compressed_chunk_id IS NOT NULL;
|
|
|
|
--should succeed
|
|
ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a', timescaledb.compress_segmentby = 'b');
|
|
|
|
select hc.* from _timescaledb_catalog.hypertable_compression hc inner join _timescaledb_catalog.hypertable h on (h.id = hc.hypertable_id) where h.table_name = 'foo' order by attname;
|
|
|
|
SELECT comp_hyper.schema_name|| '.' || comp_hyper.table_name as "COMPRESSED_HYPER_NAME"
|
|
FROM _timescaledb_catalog.hypertable comp_hyper
|
|
INNER JOIN _timescaledb_catalog.hypertable uncomp_hyper ON (comp_hyper.id = uncomp_hyper.compressed_hypertable_id)
|
|
WHERE uncomp_hyper.table_name like 'foo' ORDER BY comp_hyper.id LIMIT 1 \gset
|
|
|
|
select add_drop_chunks_policy(:'COMPRESSED_HYPER_NAME', INTERVAL '4 months', true);
|
|
|
|
--Constraint checking for compression
|
|
create table fortable(col integer primary key);
|
|
create table table_constr( device_id integer,
|
|
timec integer ,
|
|
location integer ,
|
|
c integer constraint valid_cval check (c > 20) ,
|
|
d integer,
|
|
primary key ( device_id, timec)
|
|
|
|
);
|
|
select table_name from create_hypertable('table_constr', 'timec', chunk_time_interval=> 10);
|
|
ALTER TABLE table_constr set (timescaledb.compress, timescaledb.compress_segmentby = 'd');
|
|
alter table table_constr add constraint table_constr_uk unique (location, timec, device_id);
|
|
ALTER TABLE table_constr set (timescaledb.compress, timescaledb.compress_orderby = 'timec', timescaledb.compress_segmentby = 'device_id');
|
|
alter table table_constr add constraint table_constr_fk FOREIGN KEY(d) REFERENCES fortable(col) on delete cascade;
|
|
ALTER TABLE table_constr set (timescaledb.compress, timescaledb.compress_orderby = 'timec', timescaledb.compress_segmentby = 'device_id, location');
|
|
--exclusion constraints not allowed
|
|
alter table table_constr add constraint table_constr_exclu exclude using btree (timec with = );
|
|
ALTER TABLE table_constr set (timescaledb.compress, timescaledb.compress_orderby = 'timec', timescaledb.compress_segmentby = 'device_id, location, d');
|
|
alter table table_constr drop constraint table_constr_exclu ;
|
|
--now it works
|
|
ALTER TABLE table_constr set (timescaledb.compress, timescaledb.compress_orderby = 'timec', timescaledb.compress_segmentby = 'device_id, location, d');
|
|
|
|
-- TEST fk cascade delete behavior on compressed chunk --
|
|
insert into fortable values(1);
|
|
insert into fortable values(10);
|
|
--we want 2 chunks here --
|
|
insert into table_constr values(1000, 1, 44, 44, 1);
|
|
insert into table_constr values(1000, 10, 44, 44, 10);
|
|
|
|
select ch1.schema_name|| '.' || ch1.table_name AS "CHUNK_NAME"
|
|
FROM _timescaledb_catalog.chunk ch1, _timescaledb_catalog.hypertable ht
|
|
where ch1.hypertable_id = ht.id and ht.table_name like 'table_constr'
|
|
ORDER BY ch1.id limit 1 \gset
|
|
|
|
-- we have 1 compressed and 1 uncompressed chunk after this.
|
|
select compress_chunk(:'CHUNK_NAME');
|
|
|
|
SELECT hypertable_name , total_chunks , number_compressed_chunks
|
|
FROM timescaledb_information.compressed_hypertable_stats;
|
|
--delete from foreign table, should delete from hypertable too
|
|
select device_id, d from table_constr order by device_id, d;
|
|
delete from fortable where col = 1 or col = 10;
|
|
select device_id, d from table_constr order by device_id, d;
|
|
|