mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-21 17:20:50 +00:00
16 lines
666 B
SQL
16 lines
666 B
SQL
DROP TABLE IF EXISTS t_02147;
|
|
DROP TABLE IF EXISTS t_02147_dist;
|
|
DROP TABLE IF EXISTS t_02147_merge;
|
|
|
|
CREATE TABLE t_02147 (date DateTime, v UInt32)
|
|
ENGINE = MergeTree ORDER BY toStartOfHour(date);
|
|
|
|
CREATE TABLE t_02147_dist AS t_02147 ENGINE = Distributed(test_shard_localhost, currentDatabase(), t_02147);
|
|
CREATE TABLE t_02147_merge AS t_02147 ENGINE = Merge(currentDatabase(), 't_02147');
|
|
|
|
SET optimize_monotonous_functions_in_order_by = 1;
|
|
|
|
EXPLAIN SYNTAX SELECT * FROM t_02147 ORDER BY toStartOfHour(date), v;
|
|
EXPLAIN SYNTAX SELECT * FROM t_02147_dist ORDER BY toStartOfHour(date), v;
|
|
EXPLAIN SYNTAX SELECT * FROM t_02147_merge ORDER BY toStartOfHour(date), v;
|