TSQL：獲取每小時的銷售數據

Question

我目前正在使用以下代碼從數據庫中獲取銷售數據。 它的問題在於，在沒有銷售的那些小時中，它不會顯示0。我不介意對小時進行硬編碼，但是我找不到找到這種方法的方法。 所以，

1.st問題：我如何修改下面的代碼，以在0小時內沒有銷售的情況下顯示0，

第二個問題：如何從中得到訂購清單。 下面的代碼將9:00-10:00放置在列表的末尾，因為它不是兩位數。

-- HOUR BASED SALES
select (CAST(DATEPART(HOUR, INSERTDATE) as varchar(255)) + ':00 -' +
        CAST(DATEPART(HOUR, INSERTDATE) as varchar(255)) + ':59'
       ) as [time],
       SUM (TOTAL) as REVENUE,
       COUNT (RECEIPTID) AS TOTAL_SALES,
       DEPOTID
From INVOICE INV
WHERE DEPOTID IN (25) AND TRANSDATE BETWEEN '20181025' AND '20181025'
Group By cast(datepart(hour, INSERTDATE) AS VARCHAR(255)), DEPOTID
ORDER BY CAST(DATEPART(HOUR, INSERTDATE) AS VARCHAR(255))

Answer 1

您可以列出小時數並使用left join ：

select (cast(v.hh as varchar(255)) + ':00 -' +
        cast(v.hh as varchar(255)) + ':59'
       ) as [time],
       sum(TOTAL) as REVENUE,
       sum(RECEIPTID) AS TOTAL_SALES,
       depot
From (values (0), (1), . . . (23)
     ) v(hh) left join
     invoice i
     on datepart(hour, i.insertdate) = v.hh and
        i.depotid in (25) and
        i.transdate between '20181025' and '20181025'
group by v.hh, DEPOTID
order by v.hh