mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-23 22:41:34 +08:00
b2a91494a1
To increase schema security we do not want to mix our own internal objects with user objects. Since chunks are created in the _timescaledb_internal schema our internal functions should live in a different dedicated schema. This patch make the necessary adjustments for the following functions: - chunk_constraint_add_table_constraint(_timescaledb_catalog.chunk_constraint) - chunk_drop_replica(regclass,name) - chunk_index_clone(oid) - chunk_index_replace(oid,oid) - create_chunk_replica_table(regclass,name) - drop_stale_chunks(name,integer[]) - health() - hypertable_constraint_add_table_fk_constraint(name,name,name,integer) - process_ddl_event() - wait_subscription_sync(name,name,integer,numeric)
51 lines
1.8 KiB
SQL
51 lines
1.8 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.
|
|
|
|
\c :TEST_DBNAME :ROLE_SUPERUSER
|
|
|
|
-- create compressed hypertable
|
|
CREATE TABLE "public"."metrics" (
|
|
"time" timestamp with time zone NOT NULL,
|
|
"device_id" "text",
|
|
"val" double precision
|
|
);
|
|
SELECT create_hypertable('public.metrics', 'time');
|
|
ALTER TABLE metrics SET (timescaledb.compress, timescaledb.compress_orderby = 'time', timescaledb.compress_segmentby = 'device_id');
|
|
|
|
-- insert uncompressed row into hypertable
|
|
INSERT INTO metrics (time, device_id, val)
|
|
VALUES('2023-05-01T00:00:00Z'::timestamptz, 1, 1.0);
|
|
|
|
SELECT count(*) FROM _timescaledb_internal._hyper_1_1_chunk;
|
|
|
|
-- compress these rows, we do this to get compressed row data for the test
|
|
SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk');
|
|
|
|
-- create custom compressed chunk table
|
|
CREATE TABLE "_timescaledb_internal"."custom_compressed_chunk"() INHERITS ("_timescaledb_internal"."_compressed_hypertable_2");
|
|
|
|
-- copy compressed row from compressed table into custom compressed chunk table
|
|
INSERT INTO "_timescaledb_internal"."custom_compressed_chunk" SELECT * FROM "_timescaledb_internal"."compress_hyper_2_2_chunk";
|
|
|
|
-- decompress the rows, moving them back to uncompressed space
|
|
SELECT decompress_chunk('"_timescaledb_internal"."_hyper_1_1_chunk"');
|
|
|
|
-- attach compressed chunk to parent chunk
|
|
SELECT _timescaledb_functions.create_compressed_chunk(
|
|
'"_timescaledb_internal"."_hyper_1_1_chunk"'::TEXT::REGCLASS,
|
|
'"_timescaledb_internal"."custom_compressed_chunk"'::TEXT::REGCLASS,
|
|
8192,
|
|
8192,
|
|
16384,
|
|
8192,
|
|
8192,
|
|
16384,
|
|
1,
|
|
1
|
|
);
|
|
|
|
-- select total rows in chunk (should be 2)
|
|
SELECT count(*) FROM "_timescaledb_internal"."_hyper_1_1_chunk";
|
|
|