Created
July 17, 2023 23:04
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there is no parameter $1 error
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iot_devicereadings=# \d+ iot.device_reading | |
Table "iot.device_reading" | |
Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description | |
-----------+-----------------------------+-----------+----------+---------+----------+-------------+--------------+------------- | |
asset_id | character varying(36) | | not null | | extended | | | | |
vendor | character varying(36) | | not null | | extended | | | | |
vendor_id | character varying(36) | | not null | | extended | | | | |
type | character varying(36) | | not null | | extended | | | | |
value | real | | not null | | plain | | | | |
created | timestamp without time zone | | not null | | plain | | | | |
Indexes: | |
"device_reading_pk" PRIMARY KEY, btree (asset_id, type, created) | |
"device_reading_asset_id_created_idx" btree (asset_id, created) | |
"device_reading_created_idx" btree (created) | |
Access method: heap | |
iot_devicereadings=# \dx | |
List of installed extensions | |
Name | Version | Schema | Description | |
--------------------+---------+------------+------------------------------------------------------------------------ | |
citus | 11.2-2 | pg_catalog | Citus distributed database | |
citus_columnar | 11.1-1 | pg_catalog | Citus Columnar extension | |
pg_buffercache | 1.3 | public | examine the shared buffer cache | |
pg_repack | 1.4.8 | public | Reorganize tables in PostgreSQL databases with minimal locks | |
pg_stat_statements | 1.9 | public | track planning and execution statistics of all SQL statements executed | |
pgaudit | 1.6.2 | public | provides auditing functionality | |
plpgsql | 1.0 | pg_catalog | PL/pgSQL procedural language | |
uuid-ossp | 1.1 | public | generate universally unique identifiers (UUIDs) | |
(8 rows) | |
iot_devicereadings=# select version(); | |
version | |
----------------------------------------------------------------------------------------------------------------------------------- | |
PostgreSQL 14.8 (Ubuntu 14.8-1.pgdg20.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, 64-bit | |
(1 row) | |
iot_devicereadings=# select * from citus_tables; -- there are other sharded tables | |
table_name | citus_table_type | distribution_column | colocation_id | table_size | shard_count | table_owner | access_method | |
--------------------------------+------------------+---------------------+---------------+------------+-------------+-----------------------------+--------------- | |
iot.device_reading | distributed | asset_id | 5 | 173 GB | 48 | iot_devicereadingsavercitus | heap | |
Author
pdeaudney
commented
Jul 19, 2023
iot_devicereadings=# select * from citus_tables where table_name::text = 'iot.device_reading';
table_name | citus_table_type | distribution_column | colocation_id | table_size | shard_count | table_owner | access_method
--------------------+------------------+---------------------+---------------+------------+-------------+-----------------------------+---------------
iot.device_reading | distributed | asset_id | 11 | 6081 MB | 48 | iot_devicereadingsavercitus | heap
(1 row)
iot_devicereadings=# \d+ iot.device_reading
Table "iot.device_reading"
Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description
-----------+-----------------------------+-----------+----------+---------+----------+-------------+--------------+-------------
asset_id | character varying(36) | | not null | | extended | | |
vendor | character varying(36) | | not null | | extended | | |
vendor_id | character varying(36) | | not null | | extended | | |
type | character varying(36) | | not null | | extended | | |
value | real | | not null | | plain | | |
created | timestamp without time zone | | not null | | plain | | |
Indexes:
"device_reading_pk" PRIMARY KEY, btree (asset_id, type, created)
"device_reading_asset_id_created_idx" btree (asset_id, created)
"device_reading_created_idx" btree (created)
Access method: heap
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