Question

我有点卡住了。我有一个包含以下列的数据库表：

Table Name: Data
*Value
*DateTime
*WeekNumber
*ItemId
*Name

我创建了以下脚本，我希望将结果放入上表中。

SELECT D.*, M.Name
FROM
(SELECT SUM (Data) AS [Value],
(SELECT CONVERT(Date,DATEADD(week,-1,GETDATE()))) [DateTimeValue], DatePart (Week,TimestampUTC) [WeekNumber], MT.MeterId [MeterID]

FROM DataLog.dl
JOIN MeterTags mt ON dl.MeterTagId = mt.MeterTagId
GROUP BY DatePart (Week,TimestampUTC, dl.MeterTagId, MeterId)
AS D
INNER JOIN Meters m
ON D.MeterId = M.MeterId
ORDER BY MeterId DESC

我希望将上述查询的结果放入db表中的相应列，同时为MeterID创建一个新列：

Value = Value
DateTime = DateTimeValue
WeekNumber = WeekNumber
MeterID = ***Need to create a new column*****
Name = Name

我希望这是有道理的，因为我对SQL很缺乏经验并且很难将最后的部分组合在一起。您将给予的任何帮助将不胜感激。

感谢。

Answer 1

您可以使用标准SQL INSERT语法 INSERT INTO table2 SELECT * FROM table1;

我不明白的是你的意思

MeterID = 需要创建新列 **

了解更多信息 http://www.w3schools.com/sql/sql_insert_into_select.asp和 http://msdn.microsoft.com/en-us/library/ms188263(v=sql.105).aspx

Answer 2

修改表并为MeterId添加新列。

Insert into [Data]
SELECT D.[Value], D.DateTimeValue,D.WeekNumber,MT.MeterId,M.Name
FROM
(SELECT SUM (Data) AS [Value],
(SELECT CONVERT(Date,DATEADD(week,-1,GETDATE()))) [DateTimeValue], DatePart (Week,TimestampUTC) [WeekNumber], MT.MeterId [MeterID]

FROM DataLog.dl
JOIN MeterTags mt ON dl.MeterTagId = mt.MeterTagId
GROUP BY DatePart (Week,TimestampUTC, dl.MeterTagId, MeterId)
AS D
INNER JOIN Meters m
ON D.MeterId = M.MeterId
ORDER BY MeterId DESC

将数据从SQL结果移动到现有表

2 个答案: