mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-13 01:41:59 +00:00
41 lines
2.0 KiB
Bash
41 lines
2.0 KiB
Bash
|
#!/usr/bin/env bash
|
||
|
|
|
||
|
|
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
|
||
|
|
# shellcheck source=../shell_config.sh
|
||
|
|
. "$CURDIR"/../shell_config.sh
|
||
|
|
|
||
|
|
function explain_sort_description()
|
||
|
|
{
|
||
|
|
out=$($CLICKHOUSE_CLIENT --optimize_read_in_order=1 -q "EXPLAIN PLAN actions = 1 $1")
|
||
|
|
echo "$out" | grep "Prefix sort description:"
|
||
|
|
echo "$out" | grep "Result sort description:"
|
||
|
|
}
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS t_order_by_monotonic"
|
||
|
|
$CLICKHOUSE_CLIENT -q "CREATE TABLE t_order_by_monotonic (t DateTime, c1 String) ENGINE = MergeTree ORDER BY (t, c1)
|
||
|
|
AS SELECT '2022-09-09 12:00:00', toString(number % 2) FROM numbers(2) UNION ALL
|
||
|
|
SELECT '2022-09-09 12:00:30', toString(number % 2)|| 'x' FROM numbers(3)"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT --optimize_aggregation_in_order=1 -q "SELECT count() FROM
|
||
|
|
(SELECT toStartOfMinute(t) AS s, c1 FROM t_order_by_monotonic GROUP BY s, c1)"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT --optimize_read_in_order=1 -q "SELECT toStartOfMinute(t) AS s, c1 FROM t_order_by_monotonic ORDER BY s, c1"
|
||
|
|
|
||
|
|
explain_sort_description "SELECT toStartOfMinute(t) AS s, c1 FROM t_order_by_monotonic ORDER BY s, c1"
|
||
|
|
explain_sort_description "SELECT toStartOfMinute(t) AS s, c1 FROM t_order_by_monotonic ORDER BY s"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS t_order_by_monotonic"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT -q "CREATE TABLE t_order_by_monotonic (a Int64, b Int64) ENGINE = MergeTree ORDER BY (a, b)"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT -q "INSERT INTO t_order_by_monotonic VALUES (1, 1) (1, 2), (2, 1) (2, 2)"
|
||
|
|
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY -a"
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY -a, -b"
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY a DESC, -b"
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY -a, b DESC"
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY -a, b"
|
||
|
|
explain_sort_description "SELECT * FROM t_order_by_monotonic ORDER BY a, -b"
|
||
|
|
|
||
|
|
$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS t_order_by_monotonic"
|