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[英]How to create Temp table with SELECT * INTO tempTable FROM CTE sql Query?
[英]How to create Temp table with SELECT * INTO tempTable FROM CTE Query
我有一个 MS SQL CTE 查询,我想从中创建一个临时表。 我不知道该怎么做,因为它给出了一个Invalid Object name
错误。
以下是整个查询以供参考
SELECT * INTO TEMPBLOCKEDDATES FROM
;with Calendar as (
select EventID, EventTitle, EventStartDate, EventEndDate, EventEnumDays,EventStartTime,EventEndTime, EventRecurring, EventStartDate as PlannedDate
,EventType from EventCalender
where EventActive = 1 AND LanguageID =1 AND EventBlockDate = 1
union all
select EventID, EventTitle, EventStartDate, EventEndDate, EventEnumDays,EventStartTime,EventEndTime, EventRecurring, dateadd(dd, 1, PlannedDate)
,EventType from Calendar
where EventRecurring = 1
and dateadd(dd, 1, PlannedDate) <= EventEndDate
)
select EventID, EventStartDate, EventEndDate, PlannedDate as [EventDates], Cast(PlannedDate As datetime) AS DT, Cast(EventStartTime As time) AS ST,Cast(EventEndTime As time) AS ET, EventTitle
,EventType from Calendar
where (PlannedDate >= GETDATE()) AND ',' + EventEnumDays + ',' like '%,' + cast(datepart(dw, PlannedDate) as char(1)) + ',%'
or EventEnumDays is null
order by EventID, PlannedDate
option (maxrecursion 0)
如果我能从这个 CTE 查询中创建一个临时表,我将不胜感激
create table #Temp
(
EventID int,
EventTitle Varchar(50),
EventStartDate DateTime,
EventEndDate DatetIme,
EventEnumDays int,
EventStartTime Datetime,
EventEndTime DateTime,
EventRecurring Bit,
EventType int
)
;WITH Calendar
AS (SELECT /*...*/)
Insert Into #Temp
Select EventID, EventStartDate, EventEndDate, PlannedDate as [EventDates], Cast(PlannedDate As datetime) AS DT, Cast(EventStartTime As time) AS ST,Cast(EventEndTime As time) AS ET, EventTitle
,EventType from Calendar
where (PlannedDate >= GETDATE()) AND ',' + EventEnumDays + ',' like '%,' + cast(datepart(dw, PlannedDate) as char(1)) + ',%'
or EventEnumDays is null
确保表在使用后被删除
If(OBJECT_ID('tempdb..#temp') Is Not Null)
Begin
Drop Table #Temp
End
确实格式可以非常简单 - 有时不需要预定义临时表 - 它将根据选择的结果创建。
Select FieldA...FieldN
into #MyTempTable
from MyTable
因此,除非您想要不同的类型或对定义非常严格,否则请保持简单。 另请注意,当存储过程完成执行时,在存储过程中创建的任何临时表都会自动删除。 如果存储过程 A 创建了一个临时表并调用了存储过程 B,那么 B 将能够使用 A 创建的临时表。
但是,显式删除您创建的每个临时表通常被认为是良好的编码习惯。
如何在存储过程中使用 TempTable?
以下是步骤:
创建临时表
-- CREATE TEMP TABLE
Create Table #MyTempTable (
EmployeeID int
);
INSERT TEMP SELECT DATA INTO TEMP TABLE
-- INSERT COMMON DATA
Insert Into #MyTempTable
Select EmployeeID from [EmployeeMaster] Where EmployeeID between 1 and 100
SELECT TEMP TABLE(您现在可以使用此选择查询)
Select EmployeeID from #MyTempTable
最后一步丢掉桌子
Drop Table #MyTempTable
我希望这将有所帮助。 简单明了:)
SELECT ... INTO
需要在来自 CTE 的选择中。
;WITH Calendar
AS (SELECT /*... Rest of CTE definition removed for clarity*/)
SELECT EventID,
EventStartDate,
EventEndDate,
PlannedDate AS [EventDates],
Cast(PlannedDate AS DATETIME) AS DT,
Cast(EventStartTime AS TIME) AS ST,
Cast(EventEndTime AS TIME) AS ET,
EventTitle,
EventType
INTO TEMPBLOCKEDDATES /* <---- INTO goes here*/
FROM Calendar
WHERE ( PlannedDate >= Getdate() )
AND ',' + EventEnumDays + ',' LIKE '%,' + Cast(Datepart(dw, PlannedDate) AS CHAR(1)) + ',%'
OR EventEnumDays IS NULL
ORDER BY EventID,
PlannedDate
OPTION (maxrecursion 0)
Select Eventname,
count(Eventname) as 'Counts'
INTO #TEMPTABLE
FROM tblevent
where Eventname like 'A%'
Group by Eventname
order by count(Eventname)
这里通过使用 into 子句直接创建表
这是对在执行时创建表的查询的答案的一个轻微改动(即您不必先创建表):
SELECT * INTO #Temp
FROM (
select OptionNo, OptionName from Options where OptionActive = 1
) as X
您还可以使用 View 创建临时/虚拟表 CREATE VIEW view_name AS SELECT column1, column2, ... FROM table_name WHERE condition;
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