填写缺失交易的期间之间的缺失期间

Question

在社区的大量帮助下，我已经能够创建一个查询，如果没有交易，该查询会自动为项目添加新行，并包含前一行的累积数字。不幸的是我遇到了我想改变的事情。如果期间之间的期间内没有交易，则这些期间将丢失。我也想填补这些。

示例：项目 12345 GL：

项目	数量	时期
12345	10	202001
12345	10	202002
12345	10	202003
12345	10	202004
12345	10	202005
12345	10	202006
12345	10	202009年

我的代码如下：

DECLARE @d date = DATEFROMPARTS(YEAR(getdate()), MONTH(getdate()), 1);

;WITH src AS -- mostly your existing query
(
  SELECT project, 
     period,
     rn = ROW_NUMBER() OVER 
          (PARTITION BY project ORDER BY period DESC),
     amount = SUM(SUM(amount)) OVER 
              (PARTITION BY project ORDER BY period
               ROWS UNBOUNDED PRECEDING)
  FROM dbo.GLProject
  GROUP BY project, period
),
recur AS
(
  SELECT project, period = DATEADD(MONTH, 1, period), amount
  FROM src 
  WHERE rn = 1 AND period < @d
  UNION ALL
  SELECT project, DATEADD(MONTH, 1, period), amount
  FROM recur WHERE period < @d 
)
SELECT project, amount, period = CONVERT(char(6), period, 112)
FROM src
UNION ALL
SELECT project, amount, period = CONVERT(char(6), period, 112)
FROM recur
ORDER BY project, period;

我希望它也能填补缺失的时期 202007 和 202008。像这样：

项目	数量	时期
12345	10	202001
12345	20	202002
12345	30	202003
12345	40	202004
12345	50	202005
12345	60	202006
12345	60	202007
12345	60	202008
12345	70	202009年
12345	70	202010年
12345	70	202011
12345	70	202012年
12345	70	202101
12345	70	202102
12345	70	202103
12345	70	202104
12345	70	202105
12345	70	202106
12345	70	202107
12345	70	202108
12345	70	202109

关于添加到我的查询中以解决此问题的任何想法？

在这里进行测试的小提琴：https://dbfiddle.uk/? rdbms=sqlserver_2019&fiddle=615712cf89113c3a912268ed603fd2b4

非常感谢！

Answer 1

您可能不会相信我，但添加填补缺失空白的要求实际上推动了一个更简单的解决方案。

DECLARE @d date = DATEFROMPARTS(YEAR(getdate()), MONTH(getdate()), 1);

;WITH total_range AS 
(
  SELECT project, period = MIN(period)
    FROM dbo.GLProject
    GROUP BY project
  UNION ALL 
  SELECT project, DATEADD(MONTH, 1, period)
  FROM total_range 
  WHERE period < @d
)
SELECT 
  tr.project, 
  amount = SUM(COALESCE(p.amount,0)) OVER (
             PARTITION BY tr.project ORDER BY tr.period
             -- ROWS UNBOUNDED PRECEDING -- not strictly necessary here
           ), 
  period = CONVERT(char(6), tr.period, 112)
FROM total_range AS tr
LEFT OUTER JOIN dbo.GLProject AS p 
ON tr.project = p.project
AND tr.period = p.period;

• 示例：db<>fiddle