我試圖將我的SQL查詢遷移到MongoDB。我堅持每天獲得計數。 我MSSQL查詢看起來是這樣的:MongoDB:每天計數條目
SELECT
datepart(DAY, Timestamp) as day,
datepart(MONTH, Timestamp) as month,
datepart(YEAR, Timestamp) as year,
count(RowKey) as Counts //uniq
FROM database
GROUP BY
datepart(YEAR, Timestamp),
datepart(MONTH, Timestamp),
datepart(DAY, Timestamp)
ORDER BY
datepart(YEAR, Timestamp),
datepart(MONTH, Timestamp),
datepart(DAY, Timestamp) ASC
和結果:
的DB結構是平的:
{
...
Timestamp : 2016-01-17T17:46:10.984Z,
RowKey: 123,
...
}
{
...
Timestamp : 2016-01-05T12:49:12.675Z,
RowKey: 124,
...
}
...
我是新來的MongoDB和已經嘗試過this但它沒有按照我想要的方式工作。我會感激提示。
請問您能告訴我們數據結構是怎樣的嗎? –