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How to create Temp table with SELECT * INTO tempTable FROM CTE Query

People also ask

Does CTE create a temp table?

Note. Temp Tables are physically created in the tempdb database. These tables act as the normal table and also can have constraints, an index like normal tables. CTE is a named temporary result set which is used to manipulate the complex sub-queries data.

How do I create a temp table from an existing table in SQL?

Create a Global Temporary Table in SQL Server. You can also create a global temporary table by placing double hash (##) before the temporary table name. The global temporary table will be available across different connections. 3 records will be inserted into the table.

How do you create a temporary table?

To create a temporary table, you must have the CREATE TEMPORARY TABLES privilege. After a session has created a temporary table, the server performs no further privilege checks on the table. The creating session can perform any operation on the table, such as DROP TABLE , INSERT , UPDATE , or SELECT .


Sample DDL

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

Make sure that the table is deleted after use

If(OBJECT_ID('tempdb..#temp') Is Not Null)
Begin
    Drop Table #Temp
End

Really the format can be quite simple - sometimes there's no need to predefine a temp table - it will be created from results of the select.

Select FieldA...FieldN 
into #MyTempTable 
from MyTable

So unless you want different types or are very strict on definition, keep things simple. Note also that any temporary table created inside a stored procedure is automatically dropped when the stored procedure finishes executing. If stored procedure A creates a temp table and calls stored procedure B, then B will be able to use the temporary table that A created.

However, it's generally considered good coding practice to explicitly drop every temporary table you create anyway.


How to Use TempTable in Stored Procedure?

Here are the steps:

CREATE TEMP TABLE

-- 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 (You can now use this select query)

Select EmployeeID from #MyTempTable

FINAL STEP DROP THE TABLE

Drop Table #MyTempTable

I hope this will help. Simple and Clear :)


The SELECT ... INTO needs to be in the select from the CTE.

;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)

Here by using the into clause the table is directly created


Here's one slight alteration to the answers of a query that creates the table upon execution (i.e. you don't have to create the table first):

SELECT * INTO #Temp
FROM (
select OptionNo, OptionName from Options where OptionActive = 1
) as X