mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 18:32:29 +00:00
35 lines
1.9 KiB
SQL
35 lines
1.9 KiB
SQL
SET enable_analyzer = 0;
|
|
SET allow_experimental_window_view = 1;
|
|
|
|
DROP TABLE IF EXISTS mt;
|
|
|
|
CREATE TABLE mt(a Int32, timestamp DateTime) ENGINE=MergeTree ORDER BY tuple();
|
|
|
|
SELECT '---WATERMARK---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory WATERMARK=INTERVAL '1' SECOND AS SELECT count(a), hopStart(wid) AS w_start, hopEnd(wid) AS w_end FROM mt GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid;
|
|
|
|
SELECT '---With w_end---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), hopStart(wid) AS w_start, hopEnd(wid) AS w_end FROM mt GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid;
|
|
|
|
SELECT '---WithOut w_end---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), hopStart(wid) AS w_start FROM mt GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid;
|
|
|
|
SELECT '---WITH---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS WITH toDateTime('2018-01-01 00:00:00') AS date_time SELECT count(a), hopStart(wid) AS w_start, hopEnd(wid) AS w_end, date_time FROM mt GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid;
|
|
|
|
SELECT '---WHERE---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), hopStart(wid) AS w_start FROM mt WHERE a != 1 GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid;
|
|
|
|
SELECT '---ORDER_BY---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), hopStart(wid) AS w_start FROM mt WHERE a != 1 GROUP BY hop(timestamp, INTERVAL '3' SECOND, INTERVAL '5' SECOND) AS wid ORDER BY w_start;
|
|
|
|
SELECT '---With now---';
|
|
DROP TABLE IF EXISTS wv SYNC;
|
|
CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), hopStart(wid) AS w_start, hopEnd(hop(now(), INTERVAL '1' SECOND, INTERVAL '3' SECOND)) as w_end FROM mt GROUP BY hop(now(), INTERVAL '1' SECOND, INTERVAL '3' SECOND) AS wid;
|