Função window_time
Aplica-se a: SQL do Databricks Databricks Runtime 12.2 LTS e superior
Retorna a hora de término inclusiva de uma janela de tempo produzida pelas funções window ou session_window.
Sintaxe
window_time(window)
Argumentos
window
: uma colunawindow
gerada pela função window.
Retornos
Um valor TIMESTAMP
com o ponto de extremidade inclusivo da janela.
Isso é equivalente a window.end - INTERVAL '0.000001' SECOND
Exemplos
> SELECT a, window.start as start, window.end as end, window_time(window), cnt
FROM (SELECT a, window, count(*) as cnt
FROM VALUES ('A1', '2021-01-01 00:00:00'),
('A1', '2021-01-01 00:04:30'),
('A1', '2021-01-01 00:06:00'),
('A2', '2021-01-01 00:01:00') AS tab(a, b)
GROUP by a, window(b, '5 MINUTES'))
ORDER BY a, window.start;
A1 2021-01-01 00:00:00 2021-01-01 00:05:00 2021-01-01 00:04:59.999999 2
A1 2021-01-01 00:05:00 2021-01-01 00:10:00 2021-01-01 00:09:59.999999 1
A2 2021-01-01 00:00:00 2021-01-01 00:05:00 2021-01-01 00:04:59.999999 1