mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-21 07:01:59 +00:00
28 lines
881 B
SQL
28 lines
881 B
SQL
DROP DATABASE IF EXISTS dictdb;
|
|
CREATE DATABASE dictdb Engine = Ordinary;
|
|
|
|
CREATE TABLE dictdb.dicttbl(key Int64, value_default String, value_expression String) ENGINE = MergeTree ORDER BY tuple();
|
|
INSERT INTO dictdb.dicttbl VALUES (12, 'hello', '55:66:77');
|
|
|
|
|
|
CREATE DICTIONARY dictdb.dict
|
|
(
|
|
key Int64 DEFAULT -1,
|
|
value_default String DEFAULT 'world',
|
|
value_expression String DEFAULT 'xxx' EXPRESSION 'toString(127 * 172)'
|
|
|
|
)
|
|
PRIMARY KEY key
|
|
SOURCE(CLICKHOUSE(HOST 'localhost' PORT 9000 USER 'default' TABLE 'dicttbl' DB 'dictdb'))
|
|
LAYOUT(FLAT())
|
|
LIFETIME(1);
|
|
|
|
|
|
SELECT dictGetString('dictdb.dict', 'value_default', toUInt64(12));
|
|
SELECT dictGetString('dictdb.dict', 'value_default', toUInt64(14));
|
|
|
|
SELECT dictGetString('dictdb.dict', 'value_expression', toUInt64(12));
|
|
SELECT dictGetString('dictdb.dict', 'value_expression', toUInt64(14));
|
|
|
|
DROP DATABASE IF EXISTS dictdb;
|