mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 07:31:57 +00:00
55a143d1a5
This patch avoids loading dictionaries for: - SELECT * FROM system.tables (used by clickhouse-client for completion) - SHOW CREATE TABLE some_dict But the dictionary will still be loaded on: - SHOW CREATE TABLE some_dict (from the database with Dictionary engine)
33 lines
1.2 KiB
SQL
33 lines
1.2 KiB
SQL
DROP DATABASE IF EXISTS dict_db_01224;
|
|
DROP DATABASE IF EXISTS dict_db_01224_dictionary;
|
|
CREATE DATABASE dict_db_01224;
|
|
|
|
CREATE TABLE dict_db_01224.dict_data (key UInt64, val UInt64) Engine=Memory();
|
|
CREATE DICTIONARY dict_db_01224.dict
|
|
(
|
|
key UInt64 DEFAULT 0,
|
|
val UInt64 DEFAULT 10
|
|
)
|
|
PRIMARY KEY key
|
|
SOURCE(CLICKHOUSE(HOST 'localhost' PORT 9000 USER 'default' TABLE 'dict_data' PASSWORD '' DB 'dict_db_01224'))
|
|
LIFETIME(MIN 0 MAX 0)
|
|
LAYOUT(FLAT());
|
|
|
|
SELECT status FROM system.dictionaries WHERE database = 'dict_db_01224' AND name = 'dict';
|
|
|
|
SELECT * FROM system.tables FORMAT Null;
|
|
SELECT status FROM system.dictionaries WHERE database = 'dict_db_01224' AND name = 'dict';
|
|
|
|
SHOW CREATE TABLE dict_db_01224.dict FORMAT TSVRaw;
|
|
SELECT status FROM system.dictionaries WHERE database = 'dict_db_01224' AND name = 'dict';
|
|
|
|
CREATE DATABASE dict_db_01224_dictionary Engine=Dictionary;
|
|
SHOW CREATE TABLE dict_db_01224_dictionary.`dict_db_01224.dict` FORMAT TSVRaw;
|
|
SELECT status FROM system.dictionaries WHERE database = 'dict_db_01224' AND name = 'dict';
|
|
|
|
DROP DICTIONARY dict_db_01224.dict;
|
|
SELECT status FROM system.dictionaries WHERE database = 'dict_db_01224' AND name = 'dict';
|
|
|
|
DROP DATABASE dict_db_01224;
|
|
DROP DATABASE dict_db_01224_dictionary;
|