mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-21 17:20:50 +00:00
55 lines
2.2 KiB
SQL
55 lines
2.2 KiB
SQL
DROP TABLE IF EXISTS hierarchy_source_table;
|
|
CREATE TABLE hierarchy_source_table (id UInt64, parent_id UInt64) ENGINE = TinyLog;
|
|
INSERT INTO hierarchy_source_table VALUES (1, 0), (2, 1), (3, 1), (4, 2);
|
|
|
|
DROP DICTIONARY IF EXISTS hierarchy_flat_dictionary;
|
|
CREATE DICTIONARY hierarchy_flat_dictionary
|
|
(
|
|
id UInt64,
|
|
parent_id UInt64 HIERARCHICAL
|
|
)
|
|
PRIMARY KEY id
|
|
SOURCE(CLICKHOUSE(TABLE 'hierarchy_source_table'))
|
|
LAYOUT(FLAT())
|
|
LIFETIME(MIN 1 MAX 1000);
|
|
|
|
SELECT 'Get hierarchy';
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 0);
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 1);
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 2);
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 3);
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 4);
|
|
SELECT dictGetHierarchy('hierarchy_flat_dictionary', 5);
|
|
|
|
SELECT 'Get is in hierarchy';
|
|
SELECT dictIsIn('hierarchy_flat_dictionary', 1, 1);
|
|
SELECT dictIsIn('hierarchy_flat_dictionary', 2, 1);
|
|
SELECT dictIsIn('hierarchy_flat_dictionary', 2, 0);
|
|
|
|
SELECT 'Get children';
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 0);
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 1);
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 2);
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 3);
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 4);
|
|
SELECT dictGetChildren('hierarchy_flat_dictionary', 5);
|
|
|
|
SELECT 'Get all descendants';
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 0);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 2);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 3);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 4);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 5);
|
|
|
|
SELECT 'Get descendants at first level';
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 0, 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 1, 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 2, 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 3, 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 4, 1);
|
|
SELECT dictGetDescendants('hierarchy_flat_dictionary', 5, 1);
|
|
|
|
DROP DICTIONARY hierarchy_flat_dictionary;
|
|
DROP TABLE hierarchy_source_table;
|