mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 01:51:59 +00:00
36 lines
1.1 KiB
SQL
36 lines
1.1 KiB
SQL
DROP TABLE IF EXISTS data_01917;
|
|
DROP TABLE IF EXISTS data_01917_2;
|
|
|
|
CREATE TABLE data_01917
|
|
(
|
|
key Int,
|
|
d1 Int,
|
|
d1_null Nullable(Int),
|
|
INDEX d1_idx d1 TYPE minmax GRANULARITY 1,
|
|
INDEX d1_null_idx assumeNotNull(d1_null) TYPE minmax GRANULARITY 1
|
|
)
|
|
Engine=MergeTree()
|
|
ORDER BY key;
|
|
|
|
CREATE TABLE data_01917_2
|
|
(
|
|
name String,
|
|
frequency UInt64,
|
|
INDEX memory (frequency * length(name)) TYPE set(1000) GRANULARITY 5,
|
|
INDEX sample_index1 (length(name), name) TYPE minmax GRANULARITY 4,
|
|
INDEX sample_index2 (lower(name), name) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4
|
|
)
|
|
Engine=MergeTree()
|
|
ORDER BY name;
|
|
|
|
SELECT * FROM system.data_skipping_indices WHERE database = currentDatabase();
|
|
|
|
SELECT count(*) FROM system.data_skipping_indices WHERE table = 'data_01917' AND database = currentDatabase();
|
|
SELECT count(*) FROM system.data_skipping_indices WHERE table = 'data_01917_2' AND database = currentDatabase();
|
|
|
|
SELECT name FROM system.data_skipping_indices WHERE type = 'minmax' AND database = currentDatabase();
|
|
|
|
DROP TABLE data_01917;
|
|
DROP TABLE data_01917_2;
|
|
|