Question

我有2个表要根据日期从中获取计数。换句话说，将从2018年1月1日开始的表格中的所有记录都进行计数，并返回到“计数”列。

我的查询有效，但最终得到2个日期，每个表1个。我最后想要得到的是1个日期，两个表的总计数。

 SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME
, COUNT(*) AS Count
  FROM [dwdata].[dbo].SO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)

  SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME
, COUNT(*) AS Count
  FROM [dwdata].[dbo].NO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)

因此，而不是显示2018年1月1日的记录Count：1 另一条记录显示1/1/2018 Count：2

我只有一条记录，显示1/1/2018 Count：3

Answer 1

选项可以是联合表和临时表。联合基本上将这两组数据放入同一数据集中，然后您可以将它们与temp表一起计入单个表中。

 SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME
into #table
  FROM [dwdata].[dbo].SO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)

Union All

  SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME

  FROM [dwdata].[dbo].NO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)

select DWSTOREDATETIME, COUNT(*)
FROM #table

Answer 2

您必须获得2个子查询的SUM的相应日期的UNION：

SELECT t.DWSTOREDATETIME, SUM(t.Count) AS Count
FROM(
  SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME
  , COUNT(*) AS Count
  FROM [dwdata].[dbo].SO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)
  UNION ALL
  SELECT CONVERT(varchar(10),DWSTOREDATETIME, 101) AS DWSTOREDATETIME
  , COUNT(*) AS Count
  FROM [dwdata].[dbo].NO00
  WHERE DWSTOREDATETIME > '2018-01-01 00:00:00' AND DWSTOREDATETIME < '2019-01-01 00:00:00'
  GROUP BY CONVERT(varchar(10),DWSTOREDATETIME, 101)
) AS t
GROUP BY t.DWSTOREDATETIME

需要将多个表的计数与公用列名结合起来

2 个答案: