Las tres funciones de agregación para poses temporales se ilustran a continuación.
Conteo temporal
tCount(tpose) → {tintSeq,tintSeqSet}
WITH Temp(temp) AS (
SELECT tpose '[Pose(Point(1 1), 0.1)@2001-01-01,
Pose(Point(1 1), 0.3)@2001-01-03)' UNION
SELECT tpose '[Pose(Point(1 1), 0.2)@2001-01-02,
Pose(Point(1 1), 0.4)@2001-01-04)' UNION
SELECT tpose '[Pose(Point(1 1), 0.3)@2001-01-03,
Pose(Point(1 1), 0.5)@2001-01-05)' )
SELECT tCount(Temp)
FROM Temp;
-- {[1@2001-01-01, 2@2001-01-02, 1@2001-01-04, 1@2001-01-05)}
Conteo de ventana
wCount(tpose) → {tintSeq,tintSeqSet}
WITH Temp(temp) AS (
SELECT tpose '[Pose(Point(1 1), 0.1)@2001-01-01,
Pose(Point(1 1), 0.3)@2001-01-03)' UNION
SELECT tpose '[Pose(Point(1 1), 0.2)@2001-01-02,
Pose(Point(1 1), 0.4)@2001-01-04)' UNION
SELECT tpose '[Pose(Point(1 1), 0.3)@2001-01-03,
Pose(Point(1 1), 0.5)@2001-01-05)' )
SELECT wCount(Temp, '1 day')
FROM Temp;
/* {[1@2001-01-01, 2@2001-01-02, 3@2001-01-03, 2@2001-01-04, 1@2001-01-05,
1@2001-01-06)} */