SQL Tools :: Server ImportExport Wizard - Table Relationship
May 27, 2015
I'm using SQL Server 2012. I've 2 databases one is CopyDatabase and other is PasteDatabase.
CopyDatabase has 2 tables with relationship to each other, and the PasteDatabase is empty. I want to Export Data from CopyDatabase to PasteDatabase. If I do that, it does work but I came to realize that it destroys the relationship between these 2 tables.
Same is for the Import, in case of PasteDatabase. How to maintain the relationship between them while moving the tables.
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Jun 29, 2006
A new developer tried to import a data file using the ImportExport wizard. Unfortuantely, the file had several format errors and the process aborted after reading one bad line. (I imported it using a BIDS package with error handling. The file had 454 bad rows.)
Are there any options in the I/E Wizard to logskip errors but continue processing? After all, the I/E Wizard is designed for quick-and-dirty use and if it can't "handle" erroneous data "gracefully", it is not a very practical tool.
TIA,
Barkingdog
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Jun 17, 2015
I have a new Windows 8.1 64-bit machine onto which I have installed everything that I had on my previous Windows 7 machine. Occasionally I like to use the Copy Database Wizard in SQL 2012 to create a copy of a database on my stand-alone laptop before I begin a new stage of development on it. However, I have failed to run it successfully on my new Windows 8 laptop, despite everything apart from the operating system being identical to my Windows 7 machine, on which I never encountered a problem.
do not suggest using backup instead of the Copy Database Wizard, as if something has worked for me perfectly for 15 years I would like to know why it does not work now. The error message that I receive is shown at the end of this message.
The log-on accounts for SQL Server Agent and SQL Server Integration Services 11.0 are NT ServiceSQLSERVERAGENT and NT ServiceMsDtsServer110 respectively, as they were on my Windows 7 machine. All services are running. Why I receive the error stating, "Arithmetic operation resulted in an overflow" for every database that I have tried to copy, including a new database with no tables that I created to see if I still received this error. As I said, the problem relates to trying to copy databases onto the same machine on which the original database exists.
Event Name: OnError
Message: Failed to connect to server XXXXXXX.
StackTrace: at Microsoft.SqlServer.Management.Common.ConnectionManager.Connect()
at Microsoft.SqlServer.Dts.Tasks.TransferObjectsTask.TransferObjectsTask.OpenConnection(Server& server, ServerProperty serverProp)
InnerException-->Arithmetic operation resulted in an overflow.
[code]....
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Mar 25, 2006
How can I create a one-to-one relationship in a SQL Server Management Studio Express Relationship diagram?
For example:
I have 2 tables, tbl1 and tbl2.
tbl1 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl2 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl1_id {uniqueidentifier} as FK linked to tbl1.id
If I drag and drop the tbl1.id column to tbl2 I end up with a one-to-many relationship. How do I create a one-to-one relationship instead?
mradlmaier
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Sep 1, 2015
I have several versions of SQL Server and have been using SQL 2008 on a regular basis due to this issue. Our SQL 2014 when I do the Import Data process, it opens up the dialog window, hit next, and the data source is currently defaulting to ".NET Framework Data Provider for IBM i" - when it does this it immediately errors out with:
"An error occurred which the SQL Server Integration Services Wizard was not prepared to handle.
Additional Information:
> Exception has been thrown by the target of an invocation (mscrolib)
>> Failed to find or load the registered .NET Framework Data Provider (System.Data)"
It immediately crashes/closes the Import/Export wizard with me unable to change the data source to what I need it to be.
My 2008 defaults to SQL Server Native Client 10.0 and does allow me to change to that same option (at which point it errors) but it does not close the wizard.
I need a way to either:
> Default the starting Data Source to be something else
> Fix whatever error is causing it to crash - I am at a loss as to what the error is looking for
> Not have the wizard crash whenever it defaults to this source.
Any of the above solutions would work fine - but at the moment I am unable to use the Import/Export wizard at all in SQL 2014.
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Oct 20, 2006
Hi All,
I have become frustrated and I am not finding the answers I expect.
Here's the gist, we support both Oracle and SQL for our product and we would like to migrate our Clients who are willing/requesting to go from Oracle to SQL. Seems easy enough.
So, I create a Database in SQL 2005, right click and select "Import Data", Source is Microsoft OLE DB Provider for Oracle and I setup my connection. so far so good.
I create my Destination for SQL Native Client to the Database that I plan on importing into. Still good
Next, I select "Copy data from one or more tables or views". I move on to the next screen and select all of the Objects from a Schema. These are Tables that only relate to our application or in other words, nothing Oracle System wise.
When I get to the end it progresses to about 20% and then throws this error about 300 or so times:
Could not connect source component.
Warning 0x80202066: Source - AM_ALERTS [1]: Cannot retrieve the column code page info from the OLE DB provider. If the component supports the "DefaultCodePage" property, the code page from that property will be used. Change the value of the property if the current string code page values are incorrect. If the component does not support the property, the code page from the component's locale ID will be used.
So, I'm thinking "Alright, we can search on this error and I'm sure there's an easy fix." I do some checking and indeed find out that there is a property setting called "AlwaysUseDefaultCodePage" in the OLEDB Data Source Properties. Great! I go back and look at the connection in the Import and .... there's nothing with that property!
Back to the drawing board. I Create a new SSIS package and figure out quickly that the AlwaysUseDefaultCodePage is in there. I can transfter information from the Oracle Source Table to the SQL Server 2005 Destination Table, but it appears to be a one to one thing. Programming this, if I get it to work at all, will take me about 150 hours or so.
This make perfect sense if all you are doing is copying a few columns or maybe one or two objects, but I am talking about 600 + objects with upwards of 2 million rows of data in each!!
This generates 2 questions:
1. If the Import Data Wizard cannot handle this operation on the fly, then why can't the AlwaysUseDefaultCodePage property be shown as part of the connection
2. How do I create and SSIS Package that will copy all of the data from Oracle to SQL Server? The source tables have been created and have the same Schema and Object Names as the Source. I don't want to create a Data Flow Task 600 times.
Help!!!
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Oct 10, 2007
Hello,
This seems like such a simple problem but I am new developer even through I have been on the administration end of things for some time. I will go into more detail about my tables and there relationships below. Anyway, I am trying to create a many-to-many relationship within ms sql server 2005. I have created both of my primary tables and also a junction table per the directions on microsoft's website all per ms's instructions as stated here...
http://msdn2.microsoft.com/en-us/library/ms178043.aspx
At then end of these instruction it states as a NOTE: The creation of a junction table in a database diagram does not insert data from the related tables into the junction table. For information about inserting data into a table, see How to: Create Insert Results Queries (Visual Database Tools).
http://msdn2.microsoft.com/en-us/library/ms189098.aspx
and these directions do not go into detail on how to do an insert on a junction table. And I cant find out how to do this anywhere on the internet... I did create a T-SQL INSERT statement in a trigger as listed below but I end up getting an error AS LISTED BELOW....
Here is how I set everything up...
PetitionSet table consists of:
PetitionSetID int auto-increment primary key
PetitionSetName varchar(50) no nulls
PetitionSetScope varchar(50) no nulls
the Petition table consists of:
PetitionID int auto-increment primary key
PetitionSetID int no nulls
PetitionName varchar(50) no nulls
the SetToPetitionJunction table consists of:
PetitionSetID int
PetitionID int
And, there is a composite key made up of both the PetitionSetID and PetitionID fields.
I have created the foreign key relationships with DEFAULT VALUES from the SetToPetitionJunction table to each column's respective corresponding column in each of the tables: PetitionSet and Petition.
The trigger is on the Petition table and it has the following code:
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
-- =============================================
-- Author: Name
-- Create date:
-- Description:
-- =============================================
ALTER TRIGGER .[SetToPetitionJunctionTrigger]
ON .[dbo].[Petition]
AFTER INSERT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
INSERT INTO SetToPetitionJunction
(PetitionID, PetitionSetID)
SELECT Petition.PetitionID, PetitionSet.PetitionSetID
FROM Petition INNER JOIN
PetitionSet ON Petition.PetitionSetID = PetitionSet.PetitionSetID
END
I have created an asp.net 2.0 front end to insert values into the PetitionSet table and the Petition Table. And in the detailsview for the Petition table I manually insert the PetitionSetID field to the number that corresponds to an auto-generated number on the primary key of the PetitionSet table. So I am maintaining referential integrity...
The first time it works and inserts one record in the Junction table containing the PetitionSetID from the PetitionSet table and the PetitionID from the petition table.
Then when I try to add in another petition for the same petition set number just like I did the first time and then I get this error...
Violation of PRIMARY KEY constraint 'PK_SetToPetitionJunction'. Cannot insert duplicate key in object 'dbo.SetToPetitionJunction'.
The statement has been terminated.
David
All Rights Reserved in All Media
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Jul 18, 2015
I am working on a query to generate parent child hierarchy from a table.
Table has below records.
--===== If the test table already exists, drop it
IF OBJECT_ID('TempDB..#mytable','U') IS NOT NULL
DROP TABLE #mytable
--===== Create the test table with
CREATE TABLE #mytable
[Code] ...
how to achieve this.l tried with temp tables it doesn't work.
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Mar 25, 2014
Am customizing SQL server MGMT tools 2012 for Mass deployment.Client had asked to remove Customer Feedback option from help menu.how to disable that.
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Sep 20, 2007
Login failed for user 'TOSHIBA-USERASPNET'
I know that the file persmission for the web application have to include aspnet, so i keep resetting the folder permission for aspnet in file manager, but the login failed keeps coming back every day or two
problem is after working with VS05 Pro, SQL Server Management Studio CTP, somehow the aspnet persmission get changed, use alot of sqldatasource wizards and often there is a conflict/hang between the datasource wizard and the need to have the mdf in a dettached state within VS server explorer,
not sure but the procedure to fix this seems to be to reboot, detach and re-attach the mdf in the Sql server Studio tool, re-apply the aspnet file permission on the web app folders (wonder should i be doing this in IIS instead), make sure the mdf within server explorer is detached, the it works
anyway, getting real tired of the resulting delays and design time derailment, clues greatly appreciated, thanks
sometimes i can use View in Browser when in VS05 form view and i wont get the aspnet folder permission error and other times i do.
last thing, is it a bad idea to give aspnet full permission for the entire web applicaiton??
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Mar 11, 2008
Hi Guys!
I'm trying to find a way to either importexport or synchronise an SQL 2005 db between a local and remote server, is there any way to do this programatically or otherwise? doesn't have to be the entire db, (like just aspnet_users and related tables will do)
Thanks for the help all!
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Jun 1, 2006
Yes, I created an saved a package, found it in the MSDB database (after connecting to Integration services) but can't figure out how to open it to see the control and data flow tabs. (BIDS can open a File or Analysis Service project so I don't see how to access the package from there.)
Please advise.
TIA, Barkingdog
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May 30, 2007
Hi, all experts here,
Thank you very much for your kind attention.
I am trying to create a new mining structure with case table and nested table, the case table (fact table) has alread defined the relationships with the nested table(dimension table), and I can see their relationship from the data source view. But why the wizard for creating the new mining structure showed that message? Why is that? And what could I try to fix it?
Hope it is clear for your help.
Thanks a lot for your kind advices and I am looking forward to hearing from you shortly.
With best regards,
Yours sincerely,
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Jun 16, 2008
Dear All,
how can we know that wether we had server tools or client tools on my machine?
Arnav
Even you learn 1%, Learn it with 100% confidence.
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Oct 14, 2015
I have four tables with relationships as shown. They have a circular relationship and so one of the relationships is forced to be inactive.
Operation (Commodity, OperationKey) ==========>
Commodity (Commodity)
/
/
|
|
Advice (OperationKey) ====== (inactive)=======>
Operation Commmodity (Commodity, OperationKey)
I have the following measure:
Advice No. Commodity:=CALCULATE (
COUNTROWS ( 'Advice' ),
USERELATIONSHIP(Advice[OperationKey],'Operation Commodity'[OperationKey]),
operation
)
However, the userelationship function does not override the active relationship between Operation & Advice and so the measure is limited to Advices directly filtered by the Operation table.
If I delete the relationship between Operation and Advice, then the measure works as expected i.e. Operation indirectly filters Operation Commodity which filters Advice.
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Apr 5, 2007
Hello, I created some SQL 2005 tables using Microsoft SQL Server Management Studio. I need to get the script code of those tables. I was able to do that by right clicking over each table. But how can I get the code for the relationships between the tables? Can't I create relationships between two tables by using T-SQL? Thanks, Miguel
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Feb 7, 2008
Hi I have two tables:
1.) Operator-OperatorID{PK, int, not null}-OperatorName{varchar(100), not null}-Enabled{bit, not null}-PasswordChange{bit, not null}-BirthDate{datetime, not null}
2.) Password-PasswordID{PK, int, not null}-Password{varchar(50), not null}-ExpirationDate{datetime, not null}
I'm not sure how to design and layout these two tables. The layout of these two tables is completely flexible as the application has not been deployed. I'm open to any good suggestions.
For each Operator I want to stored up to 3 previous passwords plus their current password. The password change field is so that if the operator's password expires or gets reset, they will be forced to enter a new password. This is a simple internal company application, so password encrypting is not necessary. The ExpirationDate indicates the date that the password will expire.
Hope to hear from someone soon! Thank you!
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Apr 11, 2004
Why is it not possible to define more than one relationship per table?
i have a primary table that i would like to cascade deletes to 2 other foreign tables in 2 separate relationships. why can't i do this and what are my alternatives?
thank you
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Sep 19, 2005
i ve got a database that has a table...that table has a relationship between its primary key,and another field,actuelly i did it for doing menus and sub menus,so each menu has an ID say menuID and it has DEPTH and parentID which is the menuID of the parent...the problem is that i can not use "Cascade update Related Fields" or "Cascade Delete Related Records" which are really necessary ...for example when deleting parent ,not to have a child lost :)i hope i ll have an answer soon,and thanks in advancedPS: i am using MSSQL 2000 evaluation
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Jun 10, 2006
We have two tables. Users and Projects and there is a many-to-many relationship.Ex. A user can be assigned into multiple projects.For the relationship table, should the table name be UserProjects or ProjectUsers?Also should it be singular or plural? (ex. UsersProjects or ProjectsUsers)?
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Dec 5, 2006
Hi, I come back again.
Can anyone help me to create table with many-to-many relationship. Here is my three tables
tbl_Networks
(
NID int identity(1,1) primary key,
NetworkName nvarchar(256)
)
tbl_Categories
(
CID int identity(1,1) primary key,
CateName nvarchar(256),
NID int
)
tbl_Sim
(
SID int identity(1,1) primary key,
NID int,
CID int,
NameOfSim nvarchar(256)
)
My problem is 1 value in tbl_Sim may have multiple values in table tbl_Categories and vice versal. And I don't know how to organise them
So I need some help...
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Feb 27, 2008
Hello,
I have 3 tables: Articles, ArticlesTags and Tags.
ArticleTags relate Articles and Tags records.
When I try to delete a record in Tags I get the following error:
The DELETE statement conflicted with the REFERENCE constraint
"FK_ArticlesTags_Tags". The conflict occurred in database "MyDB", table "dbo.ArticlesTags", column 'TagID'.
The statement has been terminated.
What am I doing wrong?
Here is how I am creating my tables:
create table dbo.Articles
(
ArticleID uniqueidentifier not null
constraint PK_Article primary key clustered,
Body nvarchar(max) not null
)
create table dbo.ArticlesTags
(
ArticleID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_ArticlesTags
primary key clustered (ArticleID, TagID),
constraint FK_ArticlesTags_Articles
foreign key(ArticleID)
references dbo.Articles(ArticleID)
on delete cascade,
constraint FK_ArticlesTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)
create table dbo.Tags
(
TagID uniqueidentifier not null
constraint PK_Tag primary key clustered,
[Name] nvarchar(200) not null
)
Basically, what I need is:
1. If an Article is deleted then:
> Delete all records for that Article in ArticlesTags
> Don't delete any Tag in Tags.
2. If an Tag is deleted then:
> Delete all records associated with it in ArticlesTags.
> Don't delete any Article in Articles.
What am I missing?
Thanks,
Miguel
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Dec 19, 2006
I
have 3 tables I am trying to relate for a music player. I was
following the example in the msdn however, my relationships do not seem
right. Here are tables i want to relate:
Table 1:
ArtistID
ArtistName:
Table 2:
RecordingID
RecordingName
ArtistID
Table 3:
TrackID
TrackName
TrackNumber
TrackLocation
RecordingID
So
the main idea here is that the foreign keys are recordingId and
artistID. So what i did is created the 3 tables and then make a
diagram to create the relationships. I then was reading this post:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=219696&SiteID=1
What
i want to do is use 2 different text boxes lets say and as i move from
the records in the Record_table (2) the corresponding artist will
change with it. However in the dataset the relationship looks like
this:
Artist -> Recording -> Track.... inorder for me to get
this relationship to work correctly i have to change all the
relationships in the dataset diagram. This way the dataset would look
like this: Track -> Recording ->Artist. This way i can use the
2 bindings to reference each other as stated in the link above. why
doesnt the relationship of the database know this already? why do i
have to change the relationship in the datasets.
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Sep 23, 2015
If on the source I have a new column, the script generated by SqlPackage.exe recreates the table on the background with moving the data into a temp storage. If the table is big, such approach can cause issues.
Example of the script is below: in the source project I added columns [MyColumn_LINE_1] and [MyColumn_LINE_5].
Is there any way I can make it generating an alter statement instead?
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
CREATE TABLE [dbo].[tmp_ms_xx_MyTable] (
[MyColumn_TYPE_CODE] CHAR (3) NOT NULL,
[Code] ....
The same script is generated regardless the table having data or not, having a clustered or nonclustered PK.
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Feb 25, 2008
A view named "Viw_Labour_Cost_By_Service_Order_No" has been created and can be run successfully on the server.
I want to import the data which draws from the view to a table using SQL Server Import and Export Wizard.
However, when I run the wizard on the server, it gives me the following error message and stop on the step Setting Source Connection
Operation stopped...
- Initializing Data Flow Task (Success)
- Initializing Connections (Success)
- Setting SQL Command (Success)
- Setting Source Connection (Error)
Messages
Error 0xc020801c: Source - Viw_Labour_Cost_By_Service_Order_No [1]: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "SourceConnectionOLEDB" failed with error code 0xC0014019. There may be error messages posted before this with more information on why the AcquireConnection method call failed.
(SQL Server Import and Export Wizard)
Exception from HRESULT: 0xC020801C (Microsoft.SqlServer.DTSPipelineWrap)
- Setting Destination Connection (Stopped)
- Validating (Stopped)
- Prepare for Execute (Stopped)
- Pre-execute (Stopped)
- Executing (Stopped)
- Copying to [NAV_CSG].[dbo].[Report_Labour_Cost_By_Service_Order_No] (Stopped)
- Post-execute (Stopped)
Does anyone encounter this problem before and know what is happening?
Thanks for kindly reply.
Best regards,
Calvin Lam
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Apr 6, 2007
I have two tables: ads and categories. I have an existing relationship: categories.id (PK) and ads.categoryid (FK). Now I want to create additional relationship with categories.id (PK) on ads.SecondCategoryID (FK). When I try to save it in SQL Manager I get the following error:
- Unable to create relationship 'FK_classifieds_Ads_classifieds_Categories2'. The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_classifieds_Ads_classifieds_Categories2". The conflict occurred in database "mydb", table "dbo.classifieds_Categories", column 'Id'.
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Apr 15, 1999
I am using tables with recursive relationships extensively. For example the table tbComponent has a primary key called Co_ID and a foreign key called Co_Co_ID which references the field Co_ID. This allows a component to have unlimited child components, and each child component can have an unlimited number of tiers of children. I have a few question for which I have seen no documentation on.
1. How can I create a view or a SP that will return a component record and all of its children and children's children records down to the last/lowest child record?
2. I need to be able to do a search in this table. Example:
Table: tbComponent
Columns: Co_ID Integer
Co_Co_ID Integer
Co_Name Text
Co_Attribute Text
Co_Category Text
Note: the data for Co_Category comes from a lookup table with also has a recursive relationship to itself where a category can have an unlimited number of tiers of children categories.
A typical group of records could be something like this:
Co_ID Co_Co_ID Co_Name Co_Attribute Co_Category
1 1 Car Blue Ford
2 1 Body Steel Parts
3 2 Door Front Parts
4 3 Invoice April 1 1999 Accounting
Ok, say there is over a million records in this table. Say I want to query this table and return all of the invoices for cars between March 1 1999 and May 1 1999. Say for example that there are less records where Co_Name has a value of Car then there are records with a value of Invoice, so logically I would set some kind of criteria to limit only invoices with where Co_Name = "Car". That's easy, I can return a result set of all the records Where Co_Name = "Car" and I can hold these in a view or a temp table. Now I need to query this View or temp table and see if it has any children records records Where Co_Name = "Invoice" . The problem is that the Invoice child could be a child record directly under the "Car" record, or 10 levels of children records down. The logic for this would be:
If Co_Name = "Car" Then Select * Where Co_Co_ID = 1, then take all of those record's values in Co_ID and run another statement Where Co_Co_ID = X and so on until there are no more children to search. If any of those records have a value of Invoice in Co_Name then return them.
Please don't give any speeches on Normal Relationship Database design suggesting a typical design using something like a Car table, a parts table, and a invoice table. I used the example above to demonstrate the dynamics of doing a search on a recursive relationship. I understand relationship theory and a recursive relationship is what we need to use in our situation.
Thanks for any and all input!
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May 8, 2006
hi..
I would like to create a view for two tables which have a one-to-many relationship.
Code:
Table: Supplier
Supp_ID
1
Table:Supplier_category
Supp_ID,StockCategoryID
1,56
1,57
1,90
How can i create a view that has columns like below:
Supp_ID, Stock
1,[56,57,90]
Thanks in advance.
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Mar 23, 2014
Below is my sample data of my table named "Groups"
Code:
with Groups as (
select 1 as GroupId,'Oracle' as GroupName,0 as IdParentGroup union all
select 2 as GroupId,'Microsoft' as GroupName,0 as IdParentGroup union all
select 3 as GroupId,'IBM' as GroupName,0 as IdParentGroup union all
select 4 as GroupId,'SunMicrosystem' as GroupName,1 as IdParentGroup union all
select 5 as GroupId,'peoplesoft' as GroupName,1 as IdParentGroup union all
select 6 as GroupId,'mysql' as GroupName,1 as IdParentGroup union all
select 7 as GroupId,'Nokia' as GroupName,2 as IdParentGroup union all
select 8 as GroupId,'EShop' as GroupName,2 as IdParentGroup union all
select 9 as GroupId,'Meiosys' as GroupName,3 as IdParentGroup union all
select 10 as GroupId,'UrbanCode' as GroupName,3 as IdParentGroup )
select * from groups;
Expected result:
Code:
with ExpectedResult as (
select 'Oracle' as GroupName,'SunMicrosystem' as SubGroup union all
select '' as GroupName,'peoplesoft' as SubGroup union all
select '' as GroupName,'mysql' as SubGroup union all
select 'Microsoft' as GroupName,'Nokia' as SubGroup union all
select '' as GroupName,'EShop' as SubGroup union all
select 'IBM' as GroupName,'Meiosys' as SubGroup union all
select '' as GroupName,'UrbanCode' as SubGroup )
select * from ExpectedResult;
some sample query to how to achieve this parent-child has the same table.
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May 5, 2014
Why do we need a junction table in a many to many relationship? Why can't everything be in just 2 tables?
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May 16, 2006
I am fairly new to SQL and I am currently trying to createa SQL table (using Microsoft SQL) that has a recursiverelationship, let me try to explain:I have a piece of Data let's call it "Item" wich may again contain onemore "Items". Now how would I design a set of SQL Tables that arecapable of storing this information?I tried the following two approaches:1.) create a Table "Item" with Column "ItemID" as primary key, somecolums for the Data an Item can store and a Column "ParentItemID". Iset a foreign key for ParentItemID wich links to the primarykey"ItemID" of the same table.2.) create separate Table "Item_ParentItem" that storesItemID-ParentItemID-pairs. Each column has a foreign key linked toprimary key of the "Item" Column "ItemID".In both approaches when I try to delete an Item I get an Exceptionsaying that the DELETE command could not be executed because itviolates a COLUMN REFERENCE constraint. The goal behind these FK_PKrelations is is that when an Item gets deleted, all childItems shouldautomatically be deleted recursively.How is this "standard-problem" usually solved in sql? Or do I inned toimplement the recursive deletion myself using storedprocedures or something ?
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Jul 20, 2005
I want to create a 1-many relationship. Parent table has a primarykey, child table has no primary key. The child table does have anindex with all four fields of the parent's PK. How can I do this?Thanks, Bob C.
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Jun 12, 2006
For ex.
Table Match_List ( MatchID, UserID_A, UserID_B)
constraints like
MatchID primary key
UserID_A <> UserID_B
unqiue index (UserID_A,UserID_B)
but I wish to exclude duplicated rows like 1,1,2 & 2,2,1,
cause UserA to UserB, and UserB to UserA are the same thing.
How can I get this?
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