Example: Using TD_SUM_NORMALIZE_OVERLAP - Advanced SQL Engine - Teradata Database

SQL Date and Time Functions and Expressions

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-24
dita:mapPath
xmd1556127764262.ditamap
dita:ditavalPath
lze1555437562152.ditaval
dita:id
B035-1211
lifecycle
previous
Product Category
Teradata Vantageā„¢
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;