How To Avoid Temp Tables And Do It In One Query?

Feb 5, 2008

I have a table T1 with columns: Date, Salesman, Sales. Salesman is a userid for each person and Sales is a decimal capturing sales done on Date.

From the data in T1 I would like to have a table with the following:

Salesman Sales-To-Date Sales-Last-Week

I have been able to do it with a temporary table, temp, as follows:


select Salesman, Sum(Sales) as ToDate into temp from T1 group by Salesman


with T2 as (

select Salesman, Lastweek=sum(Sales) from T1 where week>='1/28/2008' and week<='2/3/2008' group by Salesman

) select temp.Salesman, ToDate, Lastweek from temp full join T2 on temp.Salesman=T2.Salesman



How can I do the above in one query statement?

Thanks

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Can I Avoid Temp Tables, Etc.

Sep 14, 2006

I need help on two questions:1. Is temp table the only way to pass recordsets from a nested storedprocedure to a calling stored procedure? Can we avoid temp tables inthis case?2. Are operations in a stored procedure are treated as a transaction?Any help will be greatly appreciated.Background: We need to use temp table to pass recordsets from a nestedstored procedure to a calling stored procedure. Our understanding isthat in this case, we have no choice but to use temp tables. So, weneed to optimize the performance as much as possible. To do this, wewanted to find out whether operations in a stored procedure are treatedas a transaction. We are using SQL 2000 SP4. I could not find anyanswers so I did the following experiment.Experiment 1:SET QUOTED_IDENTIFIER OFFGOSET ANSI_NULLS OFFGOif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[Wiz_SP_Transaction_Test]') and OBJECTPROPERTY(id,N'IsProcedure') = 1)drop procedure [dbo].[Wiz_SP_Transaction_Test]GOCREATE PROCEDURE [dbo].[Wiz_SP_Transaction_Test]ASUpdateArticlesSETIsUpdate = 20whereArticlesId < 80000SELECT * from ArticlesGOSET QUOTED_IDENTIFIER OFFGOSET ANSI_NULLS ONGO"SELECT * from Articles" takes a long time (about 40 seconds) tocompleteBefore executing the SP, the IsUpdate attribute for all articles is 30.Then I executed this SP. Before the SP is finished, I end the SPmanually. I checked the IsUpdate attribute again, and found that allArticles's (ArticlesId < 80000) Isupdate attribute is now 20. Theoperations did not rollback. I interpret this to mean that the whole SPis not treated as a transaction.Then, I did experiment 2 below. This time, I explicitly declared thetransaction.SET QUOTED_IDENTIFIER OFFGOSET ANSI_NULLS OFFGOif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[Wiz_SP_Transaction_Test]') and OBJECTPROPERTY(id,N'IsProcedure') = 1)drop procedure [dbo].[Wiz_SP_Transaction_Test]GOCREATE PROCEDURE [dbo].[Wiz_SP_Transaction_Test]ASBEGIN TRANSACTIONUpdateArticlesSETIsUpdate = 50whereArticlesId < 80000SELECT * from ArticlesIF @@ERROR <0 ROLLBACK TRANSACTIONCOMMIT TRANSACTIONGOSET QUOTED_IDENTIFIER OFFGOSET ANSI_NULLS ONGOBefore this second SP, the IsUpdate attribute is 20 (set in the firstexperiment). I run this second SP and ended it manually before itfinished. I checked the IsUpdate attributes for all Articles's(ArticlesId < 80000), but their Isupdate attribute is 50. So theoperation did not rollback either. But we have declared the transactionexplicitly. Does this mean that the SP is still not treated as atransaction?

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Help With A SQL Query Using Temp Tables

Aug 30, 2004

Hi All,

I have 4 temporary tables that hold criteria selected through a report wizard.
I've created a SQL statement and used the four tables in my WHERE/ AND clauses but the results retuned are not being filtered correctly.

Would somebody be kind enough to help me out please.

To briefly summarise, I have created a SQL statement that returns all rows in my recordset, I now need to implement some additional SQL to filter the recordset using my temporary tables, which contain the filters as follows:

(1) Temp table 1 (##tblTempAssetFilt) is mandatory and will always contain at least one row.
(2) Temp table 2 (##tblTempRepairTypeFilter) is optional and may never contain any rows. If this is the case then I have no reason to filter my resultset against this table.
(3) Temp table 3 (##tblTempRepairFilter) / Temp table 4 (##tblTempRepairElementFilter) are both optional, only one of these tables will contain data at one time. Again, as an optional filter the tables may never contain rows, and thus need to be ignored.

I have the following SQL, can somebody tell me how I would go about filtering the recordset using the temporary tables. The creation of the temporary tables occurs at the beginning so will always exist even when no rows have been inserted.

SELECT *
FROM tblActualWork [ActualWork]
JOIN tblRepair [Repair] ON ActualWork.intRepairID = Repair.intRepairID
JOIN tblRepairElement [RepairElement] ON Repair.intRepairElementID = RepairElement.intRepairElementID
JOIN tblRepairType [RepairType] ON Repair.intRepairTypeID = RepairType.intRepairTypeID
JOIN tblAsset [Asset] ON ActualWork.intAssetID = Asset.intAssetID
WHERE ActualWork.intAssetID IN (Select intAssetID From ##tblTempAssetFilter) AND Repair.intRepairTypeID IN (Select intRepairTypeID From ##tblTempRepairTypeFilter)
AND Repair.intRepairID IN (Select intRepairID From ##tblTempRepairFilter)
AND Repair.intRepairElementID IN (Select intRepairElementID From ##tblTempRepairElementFilter)

Any filtering must be based on the recordset filtered by temp table 1, which is a mandatory filter. Rows will always exist in this temp table.

Please help, not having much joy with this. Many thanks.

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Nov 16, 2004

Is there a quick way to create a temp table that is the same as an existing table in the schema? I am used to Informix where "select * from <table A> into temp B" would create the temp table B with the same schema is table A. Is this same functionality available with MS SQL server using query analyzer?

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Aug 29, 2013

I have the following query and I would like to combine it into one query instead of using several temp tables.

IF OBJECT_ID('Tempdb..#a') IS NOT NULL DROP TABLE #a
SELECT *
INTO #a
FROM #Web_table w WITH(NOLOCK)
WHERE w.generated_date IS NOT NULL
IF OBJECT_ID('Tempdb..#b') IS NOT NULL DROP TABLE #b

[code]....

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Mar 5, 2015

do you have a general rule of thumb for breaking a complex query into temp tables? For someone who is not a sql specialist, a query with more than a few table joins can be complex. So a query with 10+ table joins can be overwhelming for someone who is not a sql specialist.

One strategy is to break a problem into pieces so to speak by grouping together closely related tables into temp tables and then joining those temp tables together. This simplifies complex SQL and although not as performant as one big query it's much easier to understand. So do you have a general rule of thumb as far as a threshold for the number of joins you include in a query before you break the query into temp tables?

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A Curious Error Message, Local Temp Vs. Global Temp Tables?!?!?

Nov 17, 2004

Hi all,

Looking at BOL for temp tables help, I discover that a local temp table (I want to only have life within my stored proc) SHOULD be visible to all (child) stored procs called by the papa stored proc.

However, the following code works just peachy when I use a GLOBAL temp table (i.e., ##MyTempTbl) but fails when I use a local temp table (i.e., #MyTempTable). Through trial and error, and careful weeding efforts, I know that the error I get on the local version is coming from the xp_sendmail call. The error I get is: ODBC error 208 (42S02) Invalid object name '#MyTempTbl'.

Here is the code that works:SET NOCOUNT ON

CREATE TABLE ##MyTempTbl (SeqNo int identity, MyWords varchar(1000))
INSERT ##MyTempTbl values ('Put your long message here.')
INSERT ##MyTempTbl values ('Put your second long message here.')
INSERT ##MyTempTbl values ('put your really, really LONG message (yeah, every guy says his message is the longest...whatever!')
DECLARE @cmd varchar(256)
DECLARE @LargestEventSize int
DECLARE @Width int, @Msg varchar(128)
SELECT @LargestEventSize = Max(Len(MyWords))
FROM ##MyTempTbl

SET @cmd = 'SELECT Cast(MyWords AS varchar(' +
CONVERT(varchar(5), @LargestEventSize) +
')) FROM ##MyTempTbl order by SeqNo'
SET @Width = @LargestEventSize + 1
SET @Msg = 'Here is the junk you asked about' + CHAR(13) + '----------------------------'
EXECUTE Master.dbo.xp_sendmail
'YoMama@WhoKnows.com',
@query = @cmd,
@no_header= 'TRUE',
@width = @Width,
@dbuse = 'MyDB',
@subject='none of your darn business',
@message= @Msg
DROP TABLE ##MyTempTbl

The only thing I change to make it fail is the table name, change it from ##MyTempTbl to #MyTempTbl, and it dashes the email hopes of the stored procedure upon the jagged rocks of electronic despair.

Any insight anyone? Or is BOL just full of...well..."stuff"?

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Temp Tables Vs Temp Variables

Jul 20, 2005

I have an application that I am working on that uses some small temptables. I am considering moving them to Table Variables - Would thisbe a performance enhancement?Some background information: The system I am working on has numeroustables but for this exercise there are only three that really matter.Claim, Transaction and Parties.A Claim can have 0 or more transactions.A Claim can have 1 or more parties.A Transaction can have 1 or more parties.A party can have 1 or more claim.A party can have 1 or more transactions. Parties are really many tomany back to Claim and transaction tables.I have three stored procsinsertClaiminsertTransactioninsertPartiesFrom an xml point of view the data looks like this<claim><parties><info />insertClaim takes 3 sets of paramters - All the claim levelinformation (as individual parameters), All the parties on a claim (asone xml parameter), All the transactions on a claim(As one xmlparameter with Parties as part of the xml)insertClaim calls insertParties and passes in the parties xml -insertParties returns a recordset of the newly inserted records.insertClaim then uses that table to join the claim to the parties. Itthen calls insertTransaction and passes the transaction xml into thatsproc.insertTransaciton then inserts the transactions in the xml, and alsocalls insertParties, passing in the XML snippet

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Dec 16, 2007

Hi all,
I have 10 tables with unique values such as mobile no: and message in each table.But now the problem is that this same mobile no: may be there in other tables.How can i eliminate the records from other tables.Can anyone tel me a suggestion.
Thank U.
 

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Feb 22, 2008

I have 3 Checkbox list panels that query the DB for the items. Panel nº 2 and 3 need to know selection on panel nº 1. Panels have multiple item selection. Multiple users may use this at the same time and I wanted to have a full separation between the application and the DB. The ASP.net application always uses Stored Procedures to access the DB. Whats the best course of action? Using a permanent 'temp' table on the SQL server? Accomplish everything on the client side?

[Web application being built on ASP.net 3.5 (IIS7) connected to SQL Server 2005)

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How To Avoid Duplicate Cells When Trying To Join 3 Tables?

Jun 3, 2008

Hi all,
 Below are my tables:




Rowid

Name


1

John


2

Peter


3

Jack Table




Rowid

Rowid1


1

1


1

2


1

3


2

1


2

2


3

2


3

3 Table1




Rowid1

Country


1

USA


2

UK


3

JAPAN Table2
I tried to get the Country for all the people in the first table.
My SQL statement is: SELECT Table.Name, Table2.Country FROM Table Left Join Table1 ON Table.Rowid = Table1.Rowid Left Join Table2 ON Table1.Rowid1 = Table2.Rowid1
My final result is shown on Table2. But is it possible if I can generate the results without the duplicate Names (as shown below)?




Name

Country


John

USA


 

UK


 

JAPAN


Peter

USA


 

UK


Jack

UK


 

JAPAN
Any advice will much appreciated.
 

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How To Avoid Having Locked Tables During Update In Sql Server 2005?

May 30, 2006

We are running a shopping mall in Korea and got a database including a table
of 4 million product prices, which is to be updated hourly basis.  Updating 4million
records requires at least 10 minutes to complete. During the update, our shopping mall
exposed to customers does not respond quickly in fact very very slowly
and we investigated and found out that many tables of SQL database during the update were being
locked.  As you know, site speed is top priority. We studied and found out that there are
two ways to avoid having locked tables during update, those are "read uncommitted" and
"snapshot" using the following lines.

     set transaction Isolation level read uncommitted
     set transaction Isolation level snapshot

We tried numerous times the above two lines and still find our tables being locked during update
and our customers are being disappointed.

My questions:

1. Is it possible at all in view of "the state of the art" to avoid having locked tables  during update of 4 million records ?

2. if it is possible, would you please teach me like I am the beginner of database studies?

For your information, we are using 2005sql (64bit) in Windows 2003 (64bit).

Sincerely
 

Daeyeon Jo

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Jun 10, 2014

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Jun 16, 2014

I have a query that maps all products to some customer levels. In this case levels 0,5,7 and 8

DELETE FROM ProductCustomerLevel
WHERE CustomerLevelID IN (0, 5, 7, 8)
INSERT ProductCustomerLevel
(
ProductID,
CustomerLevelID

[Code] ....

Basically this maps all products in a database to these customer levels so that they get a discount.

I know need to create a new customer level, example number 9. These will only have 1 or 2 products applied to it.

How can I change the SQL above so that it does not map those products already in Customer Level 9 to levels 0,5,7 and 8

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Oct 30, 2006

Hi,

I have a customer who is using vba to pull a result set from an sql server stored procedure into excel. She wants a calculated column added to the result set that gives:
The number days (datediff) between the end date (autend_dte) on one row and the begin date (autbeg_dte) on the next row for each client (clt_num). The rows are to be ordered by client and begin date. The number should be associated with the second row used to calculate the date diff. The first row for each client will have a date diff of 0.

I could do this using a cursor in the stored procedure or a loop in the vba, but I would prefer to do it with the select, but I don't even know where to start.

See expected results below.


CREATE TABLE #testit (
clt_num int NOT NULL ,
autbeg_dte datetime NULL ,
autend_dte datetime NULL)

INSERT INTO #testit (clt_num, autbeg_dte, autend_dte)
SELECT 510, '2004-09-01 00:00:00.000', '2005-09-30 23:59:00.000' UNION ALL
SELECT 510, '2005-10-01 00:00:00.000', '2006-04-06 23:59:00.000' UNION ALL
SELECT 600, '2006-08-01 00:00:00.000', '2006-11-06 23:59:00.000' UNION ALL
SELECT 2529, '2006-01-13 00:00:00.000', '2006-04-11 23:59:00.000' UNION ALL
SELECT 2529, '2005-11-30 00:00:00.000', '2005-12-12 23:59:00.000' UNION ALL
SELECT 2602, '2006-03-29 00:00:00.000', '2006-05-02 23:59:00.000' UNION ALL
SELECT 2602, '2005-11-12 00:00:00.000', '2006-02-27 23:59:00.000' UNION ALL
SELECT 2602, '2006-05-26 00:00:00.000', '2006-06-12 23:59:00.000' UNION ALL
SELECT 2602, '2006-06-18 00:00:00.000', '2006-06-28 23:59:00.000'

SELECT * FROM #testit
order by clt_num,autbeg_dte

Expected result:

clt_numautbeg_dte autend_dte Days Diff
5102004-09-01 00:00:00.0002005-09-30 23:59:00.0000
5102005-10-01 00:00:00.0002006-04-06 23:59:00.0001
6002006-08-01 00:00:00.000 2006-11-06 23:59:00.000 0
25292005-11-30 00:00:00.0002005-12-12 23:59:00.0000
25292006-01-13 00:00:00.0002006-04-11 23:59:00.00044
26022005-11-12 00:00:00.0002006-02-27 23:59:00.0000
26022006-03-29 00:00:00.0002006-05-02 23:59:00.00030
26022006-05-26 00:00:00.0002006-06-12 23:59:00.00024
26022006-06-18 00:00:00.0002006-06-28 23:59:00.0006


Thanks,

Laurie

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Hi,

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Any thoughts...?

Thanks,

S.

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Nov 3, 2000

I am attempting to execute a stored procedure as the sql query for a data transformation from sql into an excel file. The stored procedure I am calling uses temp tables (#tempT1, #tempT2, etc.) to gather results from various calculations. When I try to execute this sp, I get
'Error Source: Microsoft OLE DB Provider for SQL Server
Error Description: Invalid Object name "#tempT1"'

Is there a way to make a DTS package call a stored procedure that uses temp tables?

Thanks.

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Jun 12, 2002

Hi,

I want to check to see if a temporary table exists before I try creating one but I can't seem to find which sys table or schema collection I check. Any ideas?

Seoras

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Jun 16, 2004

I have a stored proc that creates a temporary table, then calls several other stored procs to insert data.


CREATE PROCEDURE usp_CreateTakeoff
@iEstimate int,
AS

CREATE TABLE ##Temp_Takeoff
(
Field1 ......
Field2 ......
)

-- Add Structural data
usp_AddStructural @iEstimateID, 1, 'Structural'
usp_AddForming @iEstimateID, 2, 'Forming'
...
...
...
GO


Now, a couple of problems, after the table is created and populated, I cannot find it in my list of tables, even after "refreshing".

I checked to ensure that it exists using the query analyzer and it does so I know the table is being created.

Also, I cannot see the table using crystal reports, connecting etc...... Can I not access a temporary table from 3rd party applications? I have crystal reports 7.0 professional.

Any ideas?

Mike B

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Dec 14, 2004

Hey,

I am in the process of modifying some stored procedures that currently do not use temp tables. For this modification I am required to make the stored procedures use temp tables. There are several UDF's within this stored procedure that will need to use the temp tables, and this is where in lies the problem. Does anyone know of a work around that would allow UDF's to use temp tables, or does anyone know of alternate methods instead of temp tables that wouldn't involve too much change?

Thanks

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Apr 7, 2006

Hi,

I have a called stored procedure which creates a bunch of temporary tables, inserts data into them, indexes the tables and then returns to the main calling SP. In the main stored procedure I then do SELECTs from the temporary tables. My problem is I keep getting
invalid object errors on the temporary tables:
Invalid object name '#temp_table1'

The stored procedure is in a test environment. In the SELECT I tried a prefix of database owner (my logon) as well as "dbo." but still get the error. Any suggestions as to what I am doing wrong would be much appreciated.

Thanks,
Jeff

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Sep 4, 2007

hi All,
I am using a temp table creating it as

create table #process
(
tons of coomuns in here
)
then
insert into #process(collumns)
select from peon
where etc....

Can i use the same temp table definition , but insert into another tempTable.Does alias help me accomplish this task.
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Dec 11, 2007

In these two tables im just to bring the data back where the two DesignID's dont match. Im gettin an error

Server: Msg 107, Level 16, State 3, Line 1
The column prefix '#ttTopSellers' does not match with a table name or alias name used in the query.


Declare @CustomerID as VARCHAR(25)
Set @CustomerID = 'DELCOZ01-10'

/*Figure the designs that stores carry*/
Select Design.Description, Item.DesignID,
CustomerClassificationID, CustomerID, Region.[ID] as RegionID, Region.Name
Into #ttDesign
From Mas.dbo.Item Item
Inner Join MAS.dbo.Style Style
on Item.StyleID = Style.[ID]
Inner Join MAS.dbo.Line Line
on Style.LineID = Line.[ID]
Inner Join MAS.dbo.Design Design
on Item.DesignID = Design.[ID]
Inner Join Mas.dbo.DesignRegionIndex DRI
on Design.[ID] = DRI.DesignID
Inner Join MAS.dbo.Region Region
on DRI.RegionID = Region.[ID]
Inner Join MAS.dbo.CustomerClassificationRegionIndex CRI
on Region.[ID] = CRI.RegionID
Inner Join MAS.dbo.CustomerClassification CC
on CRI.CustomerClassificationID = CC.[ID]

Where @CustomerID = CustomerID
Group By Design.Description, Item.DesignID,
CustomerClassificationID, CustomerID, Region.[ID], Region.Name


/*This finds the top retail sales globally*/
Select Top 10 Sum(Sales) as Sales, DesignID, Design.[Description]
Into #ttTopSellers
From Reporting.dbo.RetailSales_ByStore_ByCustomer_ByDay_ByItem DI
Inner Join Mas.dbo.Item Item
on DI.ItemNumber = Item.ItemNumber
Inner Join MAS.dbo.Style Style
on Item.StyleID = Style.[ID]
Inner Join MAS.dbo.Line Line
on Style.LineID = Line.[ID]
Inner Join MAS.dbo.Design Design
on Item.DesignID = Design.[ID]
Where [Date] >= Month(getdate())-12
and DesignID <> 0
Group By DesignID, Design.[Description]
Order by Sum(Sales) Desc


Select *
From #ttDesign
Where #ttDesign.DesignID <> #ttTopSellers.DesignID


--Drop Table #ttDesign
--Drop Table #ttTopSellers

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Jul 20, 2005

Why cant I use the same temptable name i a stored procedure after i have droped it?I use the Pubs database for the test case.CREATE PROCEDURE spFulltUttrekk ASSELECT *INTO #tempFROM JobsSELECT *FROM #tempDROP TABLE #tempSELECT *INTO #tempFROM EmployeeSELECT *FROM #temp

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Nov 15, 2007



I am having problem with my temp table.
I cannot get the syntax correct.

I need to do the following, If @mybit & br > 0 then
insert childid 'condidtion case when br & @mybit > then 0'
into the temp table.



CREATE TABLE #tmp_table(

childid integer null

)


IF @mybit & br > 0 THEN


INSERT INTO #tmp_table


SELECT c.childid

VALUES (childid,

CASE WHEN br & @mybit > 0 THEN 1 ELSE 0

END)

FROM

child c

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Jul 23, 2005

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Apr 12, 2006

   Please tell me there's something I haven't set.   I've done several tests now.   If your final return in a stored proc is from a temp table (ala #mytable ) the system cannot read the schema - for that matter, it won't run at all, complaining that the object #mytable doesn't exists.
It can't possible be that temp tables aren't allowed in procs used by SQLDatasource - please tell me what I am doing wrong.
This proc, when fed to a sqldatasource,  fails in the designer with #temp does not exists.
CREATE PROCEDURE dbo.repTest_TempASBEGIN
CREATE TABLE #Temp( [iTestID]  uniqueidentifier, [bTest] [bit], [cTest] [varchar] )
INSERT INTO #TempSELECT *FROM tTest
SELECT *FROM #Temp
END
 

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Mar 17, 2001

I have been researching some performance problems in a very large
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SP2)

I have one large procedure that I have been using as a test case.
Originally this procedure was a cursor with lots of processing steps
involving writing to, reading from and deleting in temp tables inside the
cursor. I remember reading that temp tables inside a cursor were a
potential performance problem, so I rewrote the procedure, replacing the
cursor with a While Loop.

Doing this showed no increase in performance. Since Profiler was showing .5
second duration times on statements in the procedure accessing the temp
tables I tested some more. I moved all the create statements to the top of
the procedure, as I know these statements after processing steps can cause
recompiles to happen. Still no performance increase.

Finally I replaced all the temp tables with actual tables, just to see what
would happen. With no other changes the performance increased by more than
500%.

Can someone give me some clues as to what is happening here, because if this
is a symptom of something I don't understand, the potential performance
problems from other places where temp tables are similarly used in the
application are enormous.

Thanks.

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May 2, 2001

The problem is we need local tables in Access for SubReports (can't use store procedures as record source for this), therefore trying to create temp table and link to Access for each report instance.


When we create the ## type table in tempdb this cannot be linked from Access (cannot be seen via DSN).
The only other option we can find is doing
CREATE TABLE tempdb.dbo.[tablename]
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Any clues?

Palmy

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May 11, 2004

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Aug 11, 1998

Hi everyone:

I am creating an sp, in which I check for the existence of a global temp table (using the exists)
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returns a true, I utilize the temp table to do some inserts. I create the temp table when my
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Any info really appreciated
Thanks
Nisha

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Jul 18, 2002

Sql 2000

Hi All,

I am creating a dts package which copies data via transform data task from a sql sever connection to an excel spreadsheet connection.
The transform data task uses a query that goes like this.

create table #temp1(CName varchar(10))

Insert #temp1
select CName from tbl1

--tbl1 is in a user DB called SALES

create table #temp2(VName varchar(10))

Insert #temp2
select CName from #temp1


select * from #temp2

--I need the resultset of the last select statement into an excel spreadsheet.
The problem is I can't even create the dts package..it shows up with an error saying that #temp1 is an invalid object....I am guessing that since the default database for the transform data task has been selected as SALES it is trying to locate the the #temp1 or #temp2 table in that DB instead of looking in the TEMPDB....My question is..is there any workaround for this problem.

Sample code welcome!!!!

Any help appreciated !

TIA
Kinnu

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