Insert If Not Exists Else Update

Apr 4, 2007

Hello,

it's me again :)
I've got a - what I think - simple question.
There is table A with Col1,Col2,Col3 and Table B with Col1,Col2,Col3

I want all rows from B in A. If a row already exist in A, then update all columns, else just insert the row.
Can someone please help me with a small syntax.
Thank you!

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IF Exists UPDATE ELSE INSERT Problem

Feb 18, 2004

Hi,

I have a 'Products' table (with: 'uid' and 'CatName' columns) and 'ProductCategory' table (with: 'uid', 'ProductID', 'CategoryID' columns).

I got stored procedure below to update or insert new row to 'ProductCategory' table whenever 'Products' table has been updated or new products has been added to it.

Update part works just fine but when new row has been added to 'Products' this storedProc dosn't insert it into 'ProductCategory' table, it does that only when 'ProductCategory' table is empty, I'm afraid it's because first column 'uid' in 'ProductCategory' table is an Identity column... I’m not sure how should I go about that problem. This is my stored procedure:

DECLARE @CatNo INT, @CatName varchar(10)
SET @CatNo = 2
SET @CatName = 'bracket'

IF exists (SELECT ProductID from ProductCategory, Products where ProductCategory.ProductID = Products.uid and Products.CatName = @CatName )
BEGIN
UPDATE ProductCategory SET CategoryID = @CatNo
FROM Products WHERE Products.CatName = @CatName and ProductCategory.ProductID = Products.uid
END
ELSE
BEGIN
INSERT INTO ProductCategory ( ProductID, CategoryID)
SELECT uid, @CatNo FROM Products
WHERE Products.CatName = @CatName
END

SET @CatNo = 3
SET @CatName = 'cable'

IF exists (SELECT ProductID from ProductCategory, Products where ProductCategory.ProductID = Products.uid and Products.CatName = @CatName )
BEGIN
UPDATE ProductCategory SET CategoryID = @CatNo
FROM Products WHERE Products.CatName = @CatName and ProductCategory.ProductID = Products.uid
END
ELSE
BEGIN
INSERT INTO ProductCategory ( ProductID, CategoryID)
SELECT uid, @CatNo FROM Products
WHERE Products.CatName = @CatName
END
(... Goes for another 37 categories)



Thank you for help.

Kooba

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Jul 20, 2005

In MS Access I can do in one SQL statement a update if exists else ainsert.Assuming my source staging table is called - SOURCE and my targettable is called - DEST and both of them have the same structure asfollowsKeycolumns==========MaterialCustomerYearNonKeyColumns=============SalesIn Access I can do a update if the record exists else do a insert inone update SQL statement as follows:UPDATE DEST SET DEST.SALES = SOURCE.SALESfrom DEST RIGHT OUTER JOIN SOURCEON (DEST.MATERIAL = SOURCE.MATERIAL ANDDEST.CUSTOMER = SOURCE.CUSTOMER ANDDEST.YEAR = SOURCE.YEAR)This query will add a record in SOURCE into DEST if that record doesnot exist in DEST else it does a update. This query however does notwork on SQL 2000Am I missing something please share your views how I can do this inSQL 2000.ThanksKaren

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Record Exists Insert Or Update

Oct 25, 2007



I had implemented as in the link to insert or update
http://blogs.conchango.com/jamiethomson/archive/2006/09/12/SSIS_3A00_-Checking-if-a-row-exists-and-if-it-does_2C00_-has-it-changed.aspx


What i want to know is... how can i assume there are no duplicate records.
I used Distinct keyword and queried it showed me all are distint but some where i find some duplicates just don't know why i am having when i look at the data both are exactly same...

Please let me know how can i fix it.
Urgent..

Thanks

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Dec 17, 2007

Is there a way to structure a query to update an existing table record if it already exists, otherwise insert a new record into that table?

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Feb 9, 2007

I've decided to post this as a sticky given the frequency this question is asked.

For those of you wishing to build a package that determines if a source row exists in the destination and if so update it else insert it, this link is for you.

http://blogs.conchango.com/jamiethomson/archive/2006/09/12/SSIS_3A00_-Checking-if-a-row-exists-and-if-it-does_2C00_-has-it-changed.aspx

Thanks Jamie!

If you want to do a similar concept to Jamie's blog post above, but with the Konesan's Checksum Transformation to quickly compare MANY fields, you can visit here:
http://www.ssistalk.com/2007/03/09/ssis-using-a-checksum-to-determine-if-a-row-has-changed/

Phil

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ALTER TRIGGER [dbo].[trg_stuPropertyAddressChangeLog] ON [dbo].[stuPropertyAddress]
FOR UPDATE
AS
DECLARE @rc AS INT ;

[code]....

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Is the only way to create a table, bulk insert, then merge the two tables together with UPDATE?

Just wanted to see if there was an easier way to do it, otherwise i'll take the latter route. Thanks!

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Mar 8, 2005

I have two tables that I have to compare:


Code:


Table:PR
WBS1 WBS2 WBS3
123-456 1000 01
123-456 1000 02
123-456 2000 02
567-890 2000 01
567-890 2000 02

Table:PR_Template
WBS2 WBS3
1000 00
1000 01
1000 02
2000 00
2000 01
2000 02

After Insert I should have:

wbs1 wbs2 wbs3
123-456 1000 00
123-456 1000 01
123-456 1000 02
123-456 2000 00
123-456 2000 01
123-456 2000 02
567-890 1000 00
567-890 1000 01
567-890 1000 02
567-890 2000 00
567-890 2000 01
567-890 2000 02





Basically, I need to insert the wbs2 and wbs3 where it does not exist in each wbs1.

What I have now will find the values that need to be inserted for a particular project but I don't know how to go through each project and perform the insert:

Select * from PR_template Where Not Exists
(Select Wbs1, Wbs2, Wbs3 from PR where PR.WBS2 = PR_Template.WBS2
And PR.WBS3 = PR_Template.Wbs3 and pr.wbs1 = '123-456')
Order by wbs2, wbs3 asc

Thank You

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Sep 28, 2007

I'm getting the following error on this query:

Insert into ILS_CustList values ('05-888', '05-888 - NV') where not exists (select jobid from ILS_CustList where jobid = '05-888')


Msg 156, Level 15, State 1, Line 1

Incorrect syntax near the keyword 'where'.


What's the problem?
Thanks!

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Hello folks,

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My Code:
Dim objConnection, objRecordset, strSQL
Dim strFavID, strUserID
strFavID = request.Form("favid")
strUserID = request.Form("userid")

Set objConnection = Server.CreateObject("ADODB.Connection")
Set objRecordset = Server.CreateObject("ADODB.Recordset")
objConnection.Open Application("ConnectionString")

strSQL = "INSERT INTO FAV (UserID,FavID) (SELECT DISTINCT " & strUserID & " AS UserID " & _
strFavID & " AS FavID" & " FROM FAV)" & _
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response.Write(strSQL)
'response.End()

If strFavID <> "" Then
On Error Resume Next
objConnection.Execute(strSQL)

objConnection.Close
Set objConnection = Nothing
End If


This code is giving me a syntax error, how do I write the correct statement. I am using MS Access 2k

Thanks for your help

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/*if key values exist don't insert new record*/
SELECT

/*if exists don't insert*/
CASE
WHEN ISNULL(gradeId, -1) = -1 THEN
INSERT INTO tblScores
(gtStudentId, assignmentId, score)
VALUES (@nStudent, @nAssignment, 0)
END

FROM tblScores
WHERE gtStudentId = @nStudent AND assignmentId = @nAssignment


tblScores has two fields comprising its primary key (gtStudentId, assignmentId) and the gradeId field is a required filed in this table.

I'm getting syntax errors when I click check syntax (near keywords insert from and end).

one other note: this CASE END is nested inside a BEGIN END loop, is this the problem? Is the 'End" of the 'Case' closing the 'End' of the 'Begin'?

thanks

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When To Use Sql Update And Sql Insert

Feb 2, 2008

I have a page where the user can update stock records. it has 5 x 5 text boxes. If the user has already entered stock before that stock will show up and they can change it and clicking the button it will update, however if they have just entered new data i would assume they would need to insert it, so how do i go about doing this? do i need to use both insert and update in the same sql string?

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Insert Then Update...

Jul 15, 2005

greetings

I am developing an application for the marketing dept at my company.
Basically users can build the content of an email to be sent to our
subscriber database.

I am wanting the application to initailly save the content into a database, the update the most recently inserted row.

The save button uses the following SQL command:
        Dim SqlMethod As String =
"INSERT INTO CZC_email (Offer, SendDate, Destinations, Copy, BannerURL)
VALUES ('" & txtCampaignName.Text & "','" &
calCampaignDate.SelectedDate.ToString("yy/dd/MM") & "','" &
DestinationsSelected & "','" & FreeTextBox2.Text & "', '"
& txtBannerPath.Text & "')SELECT @@IDENTITY AS 'CZ_ID'"

And my update button has this SQL command:

        Dim SqlMethod As String =
"UPDATE CZC_email SET SendDate = '" &
calCampaignDate.SelectedDate.ToString("yy/dd/MM") & "', Offer = '"
& txtCampaignName.Text & "',Destinations = '" &
DestinationsSelected & "', BannerURL = '" & txtBannerPath.Text
& "'  WHERE  CZ_ID = @@IDENTITY "

but it doesnt seem to be updating. anyone know what I'm doing wrong?

Cheers

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