mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 09:02:00 +00:00
17 lines
636 B
SQL
17 lines
636 B
SQL
DROP TABLE IF EXISTS t_uncompressed_cache;
|
|
|
|
CREATE TABLE t_uncompressed_cache(id UInt32, n UInt32)
|
|
ENGINE = MergeTree ORDER BY tuple()
|
|
SETTINGS min_bytes_for_wide_part = 0,
|
|
min_compress_block_size = 12, max_compress_block_size = 12,
|
|
index_granularity = 4;
|
|
|
|
INSERT INTO t_uncompressed_cache SELECT number, number FROM numbers(200);
|
|
|
|
SET max_threads = 1;
|
|
|
|
SELECT sum(n), count() FROM t_uncompressed_cache PREWHERE id = 0 OR id = 5 OR id = 100 SETTINGS use_uncompressed_cache = 0;
|
|
SELECT sum(n), count() FROM t_uncompressed_cache PREWHERE id = 0 OR id = 5 OR id = 100 SETTINGS use_uncompressed_cache = 1;
|
|
|
|
DROP TABLE t_uncompressed_cache;
|