Calculando totais acumulados e médias móveis

Análise de Séries Temporais no SQL Server

Maham Faisal Khan

Senior Data Science Content Developer

Calculando totais acumulados

Time	Jogo	RunsScored
AZ	1	8
AZ	2	6
AZ	3	3
FLA	1	7
FLA	2	7
FLA	3	6

Time	Jogo	RunsScored	TotalRuns
AZ	1	8	8
AZ	2	6	14
AZ	3	3	17
FLA	1	7	7
FLA	2	7	14
FLA	3	6	20

Totais acumulados

SELECT
    s.Team,
    s.Game,
    s.RunsScored,
    SUM(s.RunsScored) OVER (
        PARTITION BY s.Team
        ORDER BY s.Game ASC
        RANGE BETWEEN
              UNBOUNDED PRECEDING
              AND CURRENT ROW
    ) AS TotalRuns
FROM #Scores s;

Colunas Team, Game, RunsScored
SUM(s.RunsScored)
OVER()
PARTITION BY s.Team
ORDER BY s.Game ASC
RANGE BETWEEN
UNBOUNDED PRECEDING
AND CURRENT ROW

RANGE e ROWS

`RANGE`

Especifica um intervalo de resultados
"Duplicatas" processadas de uma vez
Suporta apenas UNBOUNDED e CURRENT ROW

`ROWS`

Especifica o número de linhas a incluir
"Duplicatas" processadas linha a linha
Suporta UNBOUNDED, CURRENT ROW e número de linhas

Calculando médias móveis

SELECT
    s.Team,
    s.Game,
    s.RunsScored,
    AVG(s.RunsScored) OVER (
        PARTITION BY s.Team
        ORDER BY s.Game ASC
        ROWS BETWEEN 1 PRECEDING
            AND CURRENT ROW
    ) AS AvgRuns
FROM #Scores s;

Time	Jogo	RunsScored	AvgRuns
AZ	1	8	8
AZ	2	6	7
AZ	3	3	4
FLA	1	7	7
FLA	2	7	7
FLA	3	6	6

Vamos praticar!

Análise de Séries Temporais no SQL Server