mirror of
https://github.com/timescale/timescaledb.git
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Allow non-superusers to work with the db (but also mess up the catalog)
Previous to this commit non-superusers could not do anything inside
a database with the timescale extension loaded. Now, non-superuser
can create their own hypertables and work inside the db. There are
two big caveats:
1) All users have read/write permissions to the timescaledb
catalog.
2) Permission changes applied to the main tables are not
propagated to the associated tables.
This commit is contained in:
Matvey Arye
parent
21d4ebb23b
commit
fbdcab186f
@ -193,13 +193,13 @@ this creates a more compact, and thus efficient, index.
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Below are a few current limitations of our database, which we are
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actively working to resolve:
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- Anyone using TimescaleDB currently needs superuser privileges (this is
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getting fixed very soon)
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- Any user has full read/write access to the metadata tables for hypertables.
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- Permission changes on hypertables are not correctly propagated.
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- `create_hypertable()` can only be run on an empty table
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- `COPY`ing a dataset will currently put all data in the same chunk, even if
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chunk size goes over max size. For now we recommend breaking down large
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files for `COPY` (e.g., large CSVs) into smaller files that are slightly
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larger than max_chunk size (currently 1GB).
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larger than max_chunk size (currently 1GB by default).
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We provide `scripts/migrate_data.sh` to help with this.
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- Custom user-created triggers on hypertables currently will not work (i.e.,
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fire)
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37
sql/common/permissions.sql
Normal file
37
sql/common/permissions.sql
Normal file
@ -0,0 +1,37 @@
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--schema permisions
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GRANT USAGE ON SCHEMA _timescaledb_catalog, _timescaledb_meta, _timescaledb_meta_api, _timescaledb_data_api, _timescaledb_cache
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TO PUBLIC;
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GRANT USAGE, CREATE ON SCHEMA _timescaledb_internal TO PUBLIC;
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--needed for working with hypertables
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GRANT SELECT ON ALL TABLES IN SCHEMA _timescaledb_catalog TO PUBLIC;
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GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA _timescaledb_catalog TO PUBLIC;
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--Needed but dangerous. Anybody can mess up the _timescaledb_catalog.
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--MUST DOCUMENT TODO: remove these permissions. Have c-based workaround.
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--Everything below this line is suspect.
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GRANT INSERT ON TABLE _timescaledb_catalog.hypertable,
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_timescaledb_catalog.default_replica_node, _timescaledb_catalog.hypertable_replica, _timescaledb_catalog.partition_epoch,
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_timescaledb_catalog.partition, _timescaledb_catalog.partition_replica,
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_timescaledb_catalog.hypertable_column,
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_timescaledb_catalog.chunk, _timescaledb_catalog.chunk_replica_node
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TO PUBLIC;
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--needed for inserts to hypertable
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GRANT UPDATE ON TABLE _timescaledb_catalog.hypertable, _timescaledb_catalog.chunk,
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_timescaledb_catalog.partition, _timescaledb_catalog.partition_epoch --needed for lock
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TO PUBLIC;
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--needed for ddl
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GRANT INSERT, DELETE ON TABLE _timescaledb_catalog.hypertable_index, _timescaledb_catalog.chunk_replica_node_index
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TO PUBLIC;
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GRANT DELETE, UPDATE ON TABLE _timescaledb_catalog.hypertable_column
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TO PUBLIC;
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GRANT INSERT ON TABLE _timescaledb_catalog.deleted_hypertable_index, _timescaledb_catalog.deleted_hypertable_column
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TO PUBLIC;
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@ -47,3 +47,4 @@ sql/main/ddl_util.sql
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sql/main/ddl.sql
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sql/main/ddl_triggers.sql
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sql/main/setup_main.sql
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sql/common/permissions.sql
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@ -43,10 +43,22 @@ DECLARE
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remote_node _timescaledb_catalog.node;
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BEGIN
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IF TG_OP = 'INSERT' THEN
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DECLARE
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cnt INTEGER;
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BEGIN
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EXECUTE format(
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$$
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CREATE SCHEMA IF NOT EXISTS %I
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$$, NEW.associated_schema_name);
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EXCEPTION
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WHEN insufficient_privilege THEN
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SELECT COUNT(*) INTO cnt
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FROM pg_namespace
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WHERE nspname = NEW.associated_schema_name;
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IF cnt = 0 THEN
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RAISE;
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END IF;
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END;
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PERFORM _timescaledb_internal.create_table(NEW.root_schema_name, NEW.root_table_name);
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@ -66,21 +66,11 @@ static Catalog catalog = {
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Catalog *
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catalog_get(void)
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{
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AclResult aclresult;
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int i;
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if (MyDatabaseId == InvalidOid)
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elog(ERROR, "Invalid database ID");
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/*
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* Check that the user has CREATE permissions on the database, since the
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* operation may involve creating chunks and inserting into them.
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*/
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aclresult = pg_database_aclcheck(MyDatabaseId, GetUserId(), ACL_CREATE);
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if (aclresult != ACLCHECK_OK)
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aclcheck_error(aclresult, ACL_KIND_DATABASE,
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get_database_name(MyDatabaseId));
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if (MyDatabaseId == catalog.database_id)
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return &catalog;
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213
test/expected/alternate_users.out
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213
test/expected/alternate_users.out
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@ -0,0 +1,213 @@
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\set ON_ERROR_STOP 1
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\set VERBOSITY verbose
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\set SHOW_CONTEXT never
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\set ECHO ALL
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\ir include/insert_single.sql
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\set ON_ERROR_STOP 1
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\ir create_single_db.sql
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\set VERBOSITY default
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SET client_min_messages = WARNING;
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DROP DATABASE IF EXISTS single;
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SET client_min_messages = NOTICE;
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CREATE DATABASE single;
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\c single
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CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
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psql:include/create_single_db.sql:8: NOTICE: installing required extension "dblink"
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psql:include/create_single_db.sql:8: NOTICE: installing required extension "postgres_fdw"
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psql:include/create_single_db.sql:8: NOTICE: installing required extension "hstore"
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SELECT setup_db(hostname => 'fakehost'); -- fakehost makes sure there is no network connection
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setup_db
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----------
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(1 row)
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\set VERBOSITY verbose
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\c single
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\set ECHO ALL
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CREATE TABLE PUBLIC."testNs" (
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"timeCustom" BIGINT NOT NULL,
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device_id TEXT NOT NULL,
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series_0 DOUBLE PRECISION NULL,
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series_1 DOUBLE PRECISION NULL,
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series_2 DOUBLE PRECISION NULL,
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series_bool BOOLEAN NULL
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);
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CREATE INDEX ON PUBLIC."testNs" (device_id, "timeCustom" DESC NULLS LAST) WHERE device_id IS NOT NULL;
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CREATE INDEX ON PUBLIC."testNs" ("timeCustom" DESC NULLS LAST, series_0) WHERE series_0 IS NOT NULL;
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CREATE INDEX ON PUBLIC."testNs" ("timeCustom" DESC NULLS LAST, series_1) WHERE series_1 IS NOT NULL;
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CREATE INDEX ON PUBLIC."testNs" ("timeCustom" DESC NULLS LAST, series_2) WHERE series_2 IS NOT NULL;
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CREATE INDEX ON PUBLIC."testNs" ("timeCustom" DESC NULLS LAST, series_bool) WHERE series_bool IS NOT NULL;
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SELECT * FROM create_hypertable('"public"."testNs"', 'timeCustom', associated_schema_name=>'testNs' );
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create_hypertable
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-------------------
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(1 row)
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BEGIN;
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\COPY "testNs" FROM 'data/ds1_dev1_1.tsv' NULL AS '';
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COMMIT;
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SELECT _timescaledb_meta_api.close_chunk_end_immediate(c.id)
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FROM get_open_partition_for_key((SELECT id FROM _timescaledb_catalog.hypertable WHERE table_name = 'testNs'), 'dev1') part
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INNER JOIN _timescaledb_catalog.chunk c ON (c.partition_id = part.id);
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close_chunk_end_immediate
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---------------------------
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(1 row)
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INSERT INTO "testNs"("timeCustom", device_id, series_0, series_1) VALUES
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(1257987600000000000, 'dev1', 1.5, 1),
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(1257987600000000000, 'dev1', 1.5, 2),
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(1257894000000000000, 'dev20', 1.5, 1),
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(1257894002000000000, 'dev1', 2.5, 3);
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INSERT INTO "testNs"("timeCustom", device_id, series_0, series_1) VALUES
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(1257894000000000000, 'dev20', 1.5, 2);
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CREATE TABLE chunk_closing_test(
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time BIGINT,
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metric INTEGER,
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device_id TEXT
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);
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-- Test chunk closing/creation
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SELECT * FROM create_hypertable('chunk_closing_test', 'time', chunk_size_bytes => 10000);
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create_hypertable
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-------------------
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(1 row)
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INSERT INTO chunk_closing_test VALUES(1, 1, 'dev1');
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INSERT INTO chunk_closing_test VALUES(2, 2, 'dev2');
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INSERT INTO chunk_closing_test VALUES(3, 3, 'dev3');
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SELECT * FROM chunk_closing_test;
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time | metric | device_id
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------+--------+-----------
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1 | 1 | dev1
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2 | 2 | dev2
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3 | 3 | dev3
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(3 rows)
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SELECT * FROM _timescaledb_catalog.chunk c
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LEFT JOIN _timescaledb_catalog.chunk_replica_node crn ON (c.id = crn.chunk_id)
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LEFT JOIN _timescaledb_catalog.partition_replica pr ON (crn.partition_replica_id = pr.id)
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LEFT JOIN _timescaledb_catalog.hypertable h ON (pr.hypertable_id = h.id)
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WHERE h.schema_name = 'public' AND h.table_name = 'chunk_closing_test';
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id | partition_id | start_time | end_time | chunk_id | partition_replica_id | database_name | schema_name | table_name | id | partition_id | hypertable_id | replica_id | schema_name | table_name | id | schema_name | table_name | associated_schema_name | associated_table_prefix | root_schema_name | root_table_name | replication_factor | placement | time_column_name | time_column_type | created_on | chunk_size_bytes
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----+--------------+------------+----------+----------+----------------------+---------------+-----------------------+---------------------+----+--------------+---------------+------------+-----------------------+------------------------+----+-------------+--------------------+------------------------+-------------------------+-----------------------+-----------------+--------------------+-----------+------------------+------------------+------------+------------------
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3 | 2 | | 1 | 3 | 2 | single | _timescaledb_internal | _hyper_2_2_0_3_data | 2 | 2 | 2 | 0 | _timescaledb_internal | _hyper_2_2_0_partition | 2 | public | chunk_closing_test | _timescaledb_internal | _hyper_2 | _timescaledb_internal | _hyper_2_root | 1 | STICKY | time | bigint | single | 10000
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4 | 2 | 2 | 2 | 4 | 2 | single | _timescaledb_internal | _hyper_2_2_0_4_data | 2 | 2 | 2 | 0 | _timescaledb_internal | _hyper_2_2_0_partition | 2 | public | chunk_closing_test | _timescaledb_internal | _hyper_2 | _timescaledb_internal | _hyper_2_root | 1 | STICKY | time | bigint | single | 10000
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5 | 2 | 3 | | 5 | 2 | single | _timescaledb_internal | _hyper_2_2_0_5_data | 2 | 2 | 2 | 0 | _timescaledb_internal | _hyper_2_2_0_partition | 2 | public | chunk_closing_test | _timescaledb_internal | _hyper_2 | _timescaledb_internal | _hyper_2_root | 1 | STICKY | time | bigint | single | 10000
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(3 rows)
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\set VERBOSITY default
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DO $$
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BEGIN
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CREATE ROLE alt_usr LOGIN;
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EXCEPTION
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WHEN duplicate_object THEN
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--mute error
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END$$;
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\c single alt_usr
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\dt
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List of relations
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Schema | Name | Type | Owner
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--------+--------------------+-------+----------
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public | chunk_closing_test | table | postgres
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public | testNs | table | postgres
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(2 rows)
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\set ON_ERROR_STOP 0
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SELECT * FROM chunk_closing_test;
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ERROR: permission denied for relation _hyper_2_0_replica
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--todo fix error message here:
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SELECT * FROM "testNs";
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ERROR: permission denied for schema testNs
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\set ON_ERROR_STOP 1
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CREATE TABLE "1dim"(time timestamp, temp float);
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SELECT create_hypertable('"1dim"', 'time');
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create_hypertable
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-------------------
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(1 row)
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:01', 22.5);
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:21', 21.2);
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:47', 25.1);
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SELECT * FROM "1dim";
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time | temp
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--------------------------+------
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Fri Jan 20 09:00:01 2017 | 22.5
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Fri Jan 20 09:00:21 2017 | 21.2
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Fri Jan 20 09:00:47 2017 | 25.1
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(3 rows)
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\ir include/ddl_ops_1.sql
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CREATE TABLE PUBLIC."Hypertable_1" (
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time BIGINT NOT NULL,
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"Device_id" TEXT NOT NULL,
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temp_c int NOT NULL DEFAULT -1,
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humidity numeric NULL DEFAULT 0,
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sensor_1 NUMERIC NULL DEFAULT 1,
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sensor_2 NUMERIC NOT NULL DEFAULT 1,
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sensor_3 NUMERIC NOT NULL DEFAULT 1,
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sensor_4 NUMERIC NOT NULL DEFAULT 1
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);
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CREATE INDEX ON PUBLIC."Hypertable_1" (time, "Device_id");
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SELECT * FROM create_hypertable('"public"."Hypertable_1"', 'time', 'Device_id', 1);
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create_hypertable
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-------------------
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(1 row)
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SELECT * FROM _timescaledb_catalog.hypertable;
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id | schema_name | table_name | associated_schema_name | associated_table_prefix | root_schema_name | root_table_name | replication_factor | placement | time_column_name | time_column_type | created_on | chunk_size_bytes
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----+-------------+--------------------+------------------------+-------------------------+-----------------------+-----------------+--------------------+-----------+------------------+-----------------------------+------------+------------------
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1 | public | testNs | testNs | _hyper_1 | testNs | _hyper_1_root | 1 | STICKY | timeCustom | bigint | single | 1073741824
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2 | public | chunk_closing_test | _timescaledb_internal | _hyper_2 | _timescaledb_internal | _hyper_2_root | 1 | STICKY | time | bigint | single | 10000
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3 | public | 1dim | _timescaledb_internal | _hyper_3 | _timescaledb_internal | _hyper_3_root | 1 | STICKY | time | timestamp without time zone | single | 1073741824
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4 | public | Hypertable_1 | _timescaledb_internal | _hyper_4 | _timescaledb_internal | _hyper_4_root | 1 | STICKY | time | bigint | single | 1073741824
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(4 rows)
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SELECT * FROM _timescaledb_catalog.hypertable_index;
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hypertable_id | main_schema_name | main_index_name | definition | created_on
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---------------+------------------+-----------------------------------+---------------------------------------------------------------------------------------------------------------------------------------+------------
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1 | public | testNs_device_id_timeCustom_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree (device_id, "timeCustom" DESC NULLS LAST) WHERE (device_id IS NOT NULL) | single
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1 | public | testNs_timeCustom_series_0_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree ("timeCustom" DESC NULLS LAST, series_0) WHERE (series_0 IS NOT NULL) | single
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1 | public | testNs_timeCustom_series_1_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree ("timeCustom" DESC NULLS LAST, series_1) WHERE (series_1 IS NOT NULL) | single
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1 | public | testNs_timeCustom_series_2_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree ("timeCustom" DESC NULLS LAST, series_2) WHERE (series_2 IS NOT NULL) | single
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1 | public | testNs_timeCustom_series_bool_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree ("timeCustom" DESC NULLS LAST, series_bool) WHERE (series_bool IS NOT NULL) | single
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4 | public | Hypertable_1_time_Device_id_idx | CREATE INDEX /*INDEX_NAME*/ ON /*TABLE_NAME*/ USING btree ("time", "Device_id") | single
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(6 rows)
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CREATE INDEX ON PUBLIC."Hypertable_1" (time, "temp_c");
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CREATE INDEX "ind_humidity" ON PUBLIC."Hypertable_1" (time, "humidity");
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CREATE INDEX "ind_sensor_1" ON PUBLIC."Hypertable_1" (time, "sensor_1");
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INSERT INTO PUBLIC."Hypertable_1"(time, "Device_id", temp_c, humidity, sensor_1, sensor_2, sensor_3, sensor_4)
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VALUES(1257894000000000000, 'dev1', 30, 70, 1, 2, 3, 100);
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--expect error cases
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\set ON_ERROR_STOP 0
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UPDATE ONLY PUBLIC."Hypertable_1" SET time = 0 WHERE TRUE;
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psql:include/ddl_ops_1.sql:25: ERROR: UPDATE ONLY not supported on hypertables
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DELETE FROM ONLY PUBLIC."Hypertable_1" WHERE "Device_id" = 'dev1';
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psql:include/ddl_ops_1.sql:26: ERROR: DELETE ONLY not currently supported on hypertables
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\set ON_ERROR_STOP 1
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\ir include/ddl_ops_2.sql
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ALTER TABLE PUBLIC."Hypertable_1" ADD COLUMN temp_f INTEGER NOT NULL DEFAULT 31;
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ALTER TABLE PUBLIC."Hypertable_1" DROP COLUMN temp_c;
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ALTER TABLE PUBLIC."Hypertable_1" DROP COLUMN sensor_4;
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN humidity SET DEFAULT 100;
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN sensor_1 DROP DEFAULT;
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN sensor_2 SET DEFAULT NULL;
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN sensor_1 SET NOT NULL;
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN sensor_2 DROP NOT NULL;
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ALTER TABLE PUBLIC."Hypertable_1" RENAME COLUMN sensor_2 TO sensor_2_renamed;
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ALTER TABLE PUBLIC."Hypertable_1" RENAME COLUMN sensor_3 TO sensor_3_renamed;
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DROP INDEX "ind_sensor_1";
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--expect error cases
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\set ON_ERROR_STOP 0
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ALTER TABLE PUBLIC."Hypertable_1" ALTER COLUMN sensor_2_renamed SET DATA TYPE int;
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psql:include/ddl_ops_2.sql:15: ERROR: ALTER TABLE ... ALTER COLUMN SET DATA TYPE not supported on hypertable "Hypertable_1"
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ALTER INDEX "ind_humidity" RENAME TO "ind_humdity2";
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psql:include/ddl_ops_2.sql:16: ERROR: ALTER INDEX not supported on hypertable "Hypertable_1"
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\set ON_ERROR_STOP 1
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--create column with same name as previously renamed one
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ALTER TABLE PUBLIC."Hypertable_1" ADD COLUMN sensor_3 BIGINT NOT NULL DEFAULT 131;
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--create column with same name as previously dropped one
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ALTER TABLE PUBLIC."Hypertable_1" ADD COLUMN sensor_4 BIGINT NOT NULL DEFAULT 131;
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36
test/sql/alternate_users.sql
Normal file
36
test/sql/alternate_users.sql
Normal file
@ -0,0 +1,36 @@
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\set ON_ERROR_STOP 1
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\set VERBOSITY verbose
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\set SHOW_CONTEXT never
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\set ECHO ALL
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\ir include/insert_single.sql
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\set VERBOSITY default
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DO $$
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BEGIN
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CREATE ROLE alt_usr LOGIN;
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EXCEPTION
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WHEN duplicate_object THEN
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--mute error
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END$$;
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\c single alt_usr
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\dt
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\set ON_ERROR_STOP 0
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SELECT * FROM chunk_closing_test;
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--todo fix error message here:
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SELECT * FROM "testNs";
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\set ON_ERROR_STOP 1
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CREATE TABLE "1dim"(time timestamp, temp float);
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SELECT create_hypertable('"1dim"', 'time');
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:01', 22.5);
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:21', 21.2);
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INSERT INTO "1dim" VALUES('2017-01-20T09:00:47', 25.1);
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SELECT * FROM "1dim";
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\ir include/ddl_ops_1.sql
|
||||
\ir include/ddl_ops_2.sql
|
||||
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