例 - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ 時系列テーブルおよび操作

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
2019年3月
Language
日本語
Last Update
2019-10-29
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ja-JP/sfz1493079039055.ditamap
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ja-JP/sfz1493079039055.ditaval
dita:id
B035-1208
Product Category
Software
Teradata Vantage

例: 同順位なしでのBOTTOMの使用

/*PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, BOTTOM(2, TEMPERATURE)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 10:00:00' AND TIMESTAMP '2014-01-06 10:06:00' AND BUOYID=44
GROUP BY TIME (MINUTES(2) AND BUOYID) FILL(NULLS)
ORDER BY 1, 4, 3;

/*Non-PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, BOTTOM(2, TEMPERATURE)
FROM OCEAN_BUOYS_NONPTI
WHERE TIMECODE BETWEEN TIMESTAMP '2014-01-06 10:00:00' AND TIMESTAMP '2014-01-06 10:06:00' AND BUOYID=44
GROUP BY TIME (MINUTES(2) AND BUOYID)
USING TIMECODE(TIMECODE)
FILL(NULLS)
ORDER BY 1, 4, 3;

結果は、両方のテーブルで同じです。

TIMECODE_RANGE GROUP BY TIME (MINUTES(10)) BUOYID BOTTOM(2, TEMPERATURE)
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 44 43
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 44 43
('2014-01-06 10:02:00.000000+00:00', '2014-01-06 10:04:00.000000+00:00') 2 44 53
('2014-01-06 10:02:00.000000+00:00', '2014-01-06 10:04:00.000000+00:00') 2 44 53
('2014-01-06 10:04:00.000000+00:00', '2014-01-06 10:06:00.000000+00:00') 3 44 ?

例: 同順位ありでのBOTTOMの使用

/*PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, BOTTOM WITH TIES(2, TEMPERATURE)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 10:00:00' AND TIMESTAMP '2014-01-06 10:06:00' AND BUOYID=44
GROUP BY TIME (MINUTES(2) AND BUOYID) FILL(NULLS)
ORDER BY 1, 4, 3;


/*Non-PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, BOTTOM WITH TIES(2, TEMPERATURE)
FROM OCEAN_BUOYS_NONPTI
WHERE TIMECODE BETWEEN TIMESTAMP '2014-01-06 10:00:00' AND TIMESTAMP '2014-01-06 10:06:00' AND BUOYID=44
GROUP BY TIME (MINUTES(2) AND BUOYID)
USING TIMECODE(TIMECODE)
FILL(NULLS)

結果は、両方のテーブルで同じです。

TIMECODE_RANGE GROUP BY TIME (MINUTES(10)) TIMECODE BUOYID TEMPERATURE
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 2014-01-06 10:00:24.000000 44 43
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 2014-01-06 10:00:24.333300 44 43
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 2014-01-06 10:00:25.122200 44 43
('2014-01-06 10:00:00.000000+00:00', '2014-01-06 10:02:00.000000+00:00') 1 2014-01-06 10:00:26.122200 44 43
('2014-01-06 10:02:00.000000+00:00', '2014-01-06 10:04:00.000000+00:00') 2 2014-01-06 10:02:25.122200 44 53
('2014-01-06 10:02:00.000000+00:00', '2014-01-06 10:04:00.000000+00:00') 2 2014-01-06 10:03:25.122200 44 53
('2014-01-06 10:04:00.000000+00:00', '2014-01-06 10:06:00.000000+00:00') 3 ? 44 ?