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34 lines
1.9 KiB
SQL
34 lines
1.9 KiB
SQL
SET allow_experimental_window_view = 1;
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DROP TABLE IF EXISTS mt;
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CREATE TABLE mt(a Int32, timestamp DateTime) ENGINE=MergeTree ORDER BY tuple();
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SELECT '---WATERMARK---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory WATERMARK=INTERVAL '1' SECOND AS SELECT count(a), tumbleStart(wid) AS w_start, tumbleEnd(wid) AS w_end FROM mt GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid;
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SELECT '---With w_end---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), tumbleStart(tumble(timestamp, INTERVAL '3' SECOND)) AS w_start, tumbleEnd(wid) AS w_end FROM mt GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid;
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SELECT '---WithOut w_end---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), tumbleStart(wid) AS w_start FROM mt GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid;
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SELECT '---WITH---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS WITH toDateTime('2018-01-01 00:00:00') AS date_time SELECT count(a), tumbleStart(wid) AS w_start, tumbleEnd(wid) AS w_end, date_time FROM mt GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid;
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SELECT '---WHERE---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), tumbleStart(wid) AS w_start FROM mt WHERE a != 1 GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid;
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SELECT '---ORDER_BY---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), tumbleStart(wid) AS w_start FROM mt WHERE a != 1 GROUP BY tumble(timestamp, INTERVAL '3' SECOND) AS wid ORDER BY w_start;
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SELECT '---With now---';
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DROP TABLE IF EXISTS wv NO DELAY;
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CREATE WINDOW VIEW wv ENGINE Memory AS SELECT count(a), tumbleStart(wid) AS w_start, tumbleEnd(tumble(now(), INTERVAL '3' SECOND)) AS w_end FROM mt GROUP BY tumble(now(), INTERVAL '3' SECOND) AS wid;
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