17.10 - 例: TD_SUM_NORMALIZE_OVERLAPの使用 - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQLの日付/時刻関数と式

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
2021年7月
Content Type
プログラミング リファレンス
Publication ID
B035-1211-171K-JPN
Language
日本語 (日本)
WITH subtbl(flight_id, charges, duration) AS
     (SELECT flight_id, charges, duration FROM FlightExp)
SELECT * 
     FROM TABLE (TD_SYSFNLIB.TD_SUM_NORMALIZE_OVERLAP(NEW VARIANT_TYPE(subtbl.flight_id),
                 NEW VARIANT_TYPE(subtbl.charges),          
                 subtbl.duration)
RETURNS (flight_id INT, cnt INT, charges FLOAT,
     duration PERIOD(TIMESTAMP(6) WITH TIME ZONE))
HASH BY flight_id /* input data is redistributed on column, flight_id */
LOCAL ORDER BY flight_id, duration) /* input data is sorted on these columns */
AS DT(flight_id, charges, duration) ORDER BY 1,3;