SQL for self foreign key has me baffled

Hi guys,
This is probably really simple. I am wanting to write an sql
for a dropdown menu for my top nav in my application. What it is,
is I have one column for ID ( primary ) and another for subID and a
page name ( txt) - seems like it would be simple , but I can't seem
to get it to work.
<cfquery name="getNav2" datasource="#application.db#">
SELECT ID, subID, pagetype, dapage, menuText, title, dasorter
FROM masterPager
ORDER by ID, subID, dasorter, menuText, dapage
</cfquery>
I have tried a where statement ( WHERE ID = subID ) and that
brings up nothing.
There is a diagram of what I want here -
http://www.interaktonline.com/Products/Dreamweaver-Extensions/MXCSSMenus/Documentation/Art icles/Design+Your+Database-Databases+By+Example.html?id_art=24&id_asc=222
( all one line ) They show the table, but not the SQL
The group on the output ( am a little confused )
What I want is for it to look like a tree - then I can apply
my CSS dropdown code.
Home
About Us
About_sub1
About_sub2
Contact
Contact_sub1
Contact_sub2
Products
Products_sub1
Products_sub2
Products_sub3
Disclaimer
Privacy
Any help would surely be appreciated.
Thanks in advance

I'm not sure what database you are using, but assuming SQL
Server, the query below will select all rows and order them either
by their sub_ID, or if the subID is NULL, the ID field would be
used in its place. Items with a NULL subID would be the "primary"
(top level) menu items. This would output your items in the proper
order. In the output, you would group by subID then loop through
and check to see if the ID=subID (which woud indicate the top level
menu items) and the ones following them would be the sub-menu
items.
<cfquery name="getNav2" datasource="#application.db#">
SELECT ID, ISNULL(subID, ID) AS sub_id, pagetype, dapage,
menuText, title, dasorter
FROM masterPager
ORDER by 2, 1, 3, 4, 5, 6
</cfquery>
Phil

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Hello Tom,
You were offered the solution on the InterAKT forums, I am not sure why you are posting this problem again. There's also another thread here that presents the same issue and solution:
http://www.adobeforums.com/cgi-bin/webx/.3bc42a90/0
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Please post your code. Cut'n'paste from SQL*Plus like this...
SQL> conn a/a
Connected.
SQL> desc t1
Name                                      Null?    Type
COL1                                               NUMBER
COL2                                               VARCHAR2(10)
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My problem when I update or insert to table Ffclient which has link 1-1 with other table ClientLoan by composes primary key loanId and clienId (break table). I auto mapping by Jdeveloper 10g version 10.1.2. In FfClient table has two fields compose foreign key of ClientLoan as loanId and clienId not nullable. In toplink object Ffclient it only has one reference ClientLoan object by clientLoan field, not has two fields loanId and clienId . When I insert or update to database, I can't set value for these two fields direct so I have created new ClientLoan object and set value for composed primary key loanId and clienId, after that set it to object Ffclient. But when I update or insert to database it occurs exception about insert null for two not nullable fields: loanId and clienId.
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Mapping is:
â¦.
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<uses-batch-reading>false</uses-batch-reading>
<indirection-policy>
<mapping-indirection-policy>
<type>oracle.toplink.internal.indirection.TransparentIndirectionPolicy</type>
</mapping-indirection-policy>
</indirection-policy>
<container-policy>
<mapping-container-policy>
<container-class>oracle.toplink.indirection.IndirectList</container-class>
<type>oracle.toplink.internal.queryframework.ListContainerPolicy</type>
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<field>LSB.CLIENT_LOAN.LOAN_ID</field>
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<target-foreign-key-fields>
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<field>LSB.FFCLIENT.LOAN_ID</field>
</target-foreign-key-fields>
<type>oracle.toplink.mappings.OneToManyMapping</type>
</database-mapping>
â¦..
<database-mapping>
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<reference-class>uk.co.lsb.elb.toplink.ClientLoan</reference-class>
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<is-private-owned>false</is-private-owned>
<uses-batch-reading>false</uses-batch-reading>
<indirection-policy>
<mapping-indirection-policy>
<type>oracle.toplink.internal.indirection.BasicIndirectionPolicy</type>
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</indirection-policy>
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<field>LSB.FFCLIENT.LOAN_ID</field>
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Yes, many thanks for you reply.
My project has many layer (include DAO + EJB + BO + WEB).
Toplink objects which are auto created by TopLink has only using in DAO and EJB layer, then toplink objects are transfer to Bean objects (valueObject) which are contain primitive java type as int, long, double... not java wrapper object as Integer, Long, Double... Bean objects are using from EJB to WEB layer. So when set value to bean object from toplink object I sometime don't set all reference toplink object to reference object of bean (although bean has references bean object as toplink object) because there are too big. So when I update data from WEB layer to EJB layer, before update to database, I must get fill all data for foreign key of update object by create new reference toplink object, add reference_id to this object and set it to update object. I waste a lot of time, its very handwork and tire. Are you has any solution about this problem?
Thank in advanced.
ThangNQ

Creation of Index for Primary & Foreign Key required?

hi,
i would like to find out if a column is defined as the primary key, do i need to create a separate index for it? or defining a primary key will tell the db to automatically create an index for it?
does foreign key have the same behavior as the primary key constraint?
thanks!

i would like to find out if a column is defined as the primary key, do i need to create a separate index for it? No
or defining a primary key will tell the db to automatically create an index for it? Yes
See
http://download-uk.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg05itg.htm#7265
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Need help on how to code this SQL statement! (one key has leading zeros)

Good day, everyone!
First of all, I apologize if this isn't the best forum. I thought of putting it in the SAP Oracle database forum, but the messages there seemed to be geared outside of ABAP SELECTs and programming. Here's my question:
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>
Dave Packard wrote:
> Good day, everyone!
> I would like to join the tables FMIFIIT and AUFK. The INNER JOIN will be done between FMIFIIT's MEASURE (Funded Program) field, which is char(24), and AUFK's AUFNR (Order Number) field, which is char(12).
>
> The problem I'm having is this: All of the values in AUFNR are preceeded by two zeros. For example, if I have a MEASURE value of '5200000017', the corresponding value in AUFNR is '005200000017'. Because I have my SQL statement coded to just match the two fields, I obviously get no records returned because, I assume, of those leading zeros.
> Dave
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Hello
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appreciate any feedback
thanks
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Also check metalink note 1082644.1, this problem can be caused when importing into an Apps mode EUL using the EUL owner database account, rather than an eBusiness Suite user account.
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Using
software Jdev 11G, WLS 11G, Oracle DB 11G, Windows Vista platform
technology EJB 3.0, jspx, backing beans, session bean
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On a different note but the same song…
I noticed that when I look at my Session Bean Data Contols that the coketruck already has a list of the products. I have created a jsp page with a backing bean and have been able to use the namedquery on the coketruck entity to retrieve the productList. Unfortunately I need to sort the products by type and was also not able to find where to perform the work to be able to iterate through the productList to get my desired display. Therefore I started looking at doing another namedquery that would only retrieve the product_type ordering by the truckId.
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user9005175 wrote:
Hi!
I work on an application wich uses a shopping cart stored in a database. The shopping cart uses two tables:
CART: Holds information common for one shopping cart: the user it is connected to etc.
- Primary key: CART_ID
CART_ROW: One row in the cart, e.g. one new product to buy.
- Primary key: ROW_ID
- Foreign key: CART_ROW.CART_ID references CART.CART_ID
From the code the rows in the cart are collected per cart, as is modelled by the foreign key. There exists one more relationship, which we use in the code, but which is not modelled by a foreign key in the database. One row can be dependent on another row, which makes the other row a parent.
CART_ROW has a column PARENT_ID which references CART_ROW.ROW_ID.
Should we add a foreign key for PARENT_ID? Or are there any questions to consider when it is a foreign key to the same table?
I suggest to add foreign key it wont harm the performance (except while on insert when there would be validation for the foreign key). But it would prevent users to insert wrong/corrupt data either through code or directly by loggin in the database.
A while ago we added indexes, both on ROW_ID and on PARENT_ID. Could the index on PARENT_ID have been harmful, since there is no foreign key?
Index on parent_id would only be harmful if you do not make use of index after creating it (i.e. there is no query which make use of this index).
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How can I create a new entry without using LOV for foreign keys.

Referring to TUHRA sample application based on HR database schema. JDeveloper 10.1.3.0.4
How can I create a new employee without using LOV for the foreign key "job_id".
On the first page I would like to choose the job_title from adf read-only table.
After clicking on the "create new employee button" a creation form appears in which the job_id field is set with previous selection.
Regards M.Winkler
Edited by: user3541283 on 06.10.2008 03:44
Edited by: user3541283 on 06.10.2008 03:50

Hi,
usually the foreign key is only set if the VO you select is dependent from a master. If e.g. you have DepartmentsVO1 that has an EmployeeVO3 as its nested VO, then creating a new instance of employees automatically add the foreign key. If you add EmployeesVO1, which is not dependent to DepartmensVO1, then the foreign key is not set. So if this is the case in THURA (keep in mind that this is not an Oracle demo but a sample used in a book about ADF) then all you need is to take the independent VO when building the new employee form.
Frank

SQL Developer Data Modeler - Relation to Foreign Key Generation

SQL Developer Data Modeler 2.0.0 Build 584.
I am having trouble with Relations to Foreign Keys when Forward Engineering a Relational Model from a Logical Model.
First of all, the Naming Standard is not applied to the Foreign Keys when I perform the Engineer to Relational Model.
So I right click on the Relational Model from the Browser and Apply Naming Standards to Keys and Constraints.
I uncheck everything but Foreign Keys.
Now, Foreign Keys are named according to my Naming Standards.
However, this process also performs renames on the Column Foreign Keys even though I specifically unchecked that option.
This appears to be a BUG in the software and I haven't found a way around it.
I tried using {column} instead of {ref column} in the Naming Standard Template for Column Foreign Key, but that simply resulted in renaming my columns to "{column}".
Please confirm and/or let me know of any work-around for this.
Thanks,
Dan

Hi Philip,
Thanks for the reply.
Is this recorded as a bug to be addressed in the future?
Should I submit this problem via Oracle Support?
The other work-around I came up with is to override every Relation name in the Logical Model with the name I want to use in the Relational Model.
When the Relational Model is Engineered, this becomes my Foreign Key name.
Of course, this is not how I want to do things, so I am hoping for a bug fix someday.
Regards,
Dan

Foreign Keys for a Logical Table

Hi All,
I want to know in which scenarios we create the Foreign Keys for a Logical Table. Once we create the foreign key for the logical table, does it mean that it will automatically override if any joins are there.
Physical Table A, B ( no physical joins)
Logical Table A, B (logical join B(Dim)-->A(Fact))
created the foreign key in logical table A with B .(A.1=B.1)
Will the rpd generate sql with A.1=B.1 join condition for reports.
I tried to create the logical foreign key for logical table A, I could not see any corresponding table option.Here is its snapshot
http://tinypic.com/r/jq1gkz/6
Thanks,
Virat

In general when we go complex joins in Physical layer we go for Logical foreign key joins in BMM layer, best examples is SCD Type-II.
Physical Table A, B ( no physical joins)
-->You need to have a physical join so that this can be override by BMM layer
created the foreign key in logical table A with B .(A.1=B.1) Will the rpd generate sql with A.1=B.1 join condition for reports.
-->Yes you can see this join in BI Physical query.
I tried to create the logical foreign key for logical table A, I could not see any corresponding table option.Here is its snapshot
-->2 cases: 1)You need to delete existing logical joins 2) You might not have join in physical layer.
Hope this helps
Let me know for issues
Edited by: Srini VEERAVALLI on Jan 18, 2013 1:29 PM
BTW: You got very good name, why dont you update in your profile to see your name instead of some number
Edited by: Srini VEERAVALLI on Jan 18, 2013 1:29 PM

Maintenance View for custom table with foreign key relationship

Hi Folks,
I have created a custom table with foreign key relationship with other check tables. I want to create a maintenance view / tablemaintenance generator. What all things I need to take care for the foreign keys related fields while creating the maintenance view / tablemaintenance generator.
Regards,
santosh

Hi,
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Create the table maintainance generator via SE11 and it will take care of all teh foreign key checks by itself.
Regards,
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Storage for Foreign Keys and Function based indexes

This may well be the silliest question of the day, but is it possible to specify the storage for a Foreign key or a function based index? I'm not even sure that it would make sense.

Well, a foreign key constraint is not a segment, nor is any other type of constraint. However, a function-based index is a segment, just like any other index. So, in that case, specify a tablespace, just like you would with any other index.
Something like this:
create index my_fbi on my_tab(upper(last_name)) tablespace my_index_tablespace;
-Mark
Message was edited by:
mbobak
Fixed minor typo.

How to declare Compound Foreign Key for CMR

Hi All,
I would like to know, is it possible to declare CMR field for Compound Foreign key.
Any Pointers would be appreicated.
Thanks
Ann.

Compound foreign keys are declared (when the relationships are used) in the sun-cmp-mappings.xml file, like this:
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        <cmr-field-name>actividadePeriodos</cmr-field-name>
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If the existing database relationships are not used in the app server (if there is no need for composite containment between the parent and the child), then the foreign keys don't need to be declared.

Logical foreign key

Hi All,
I apologize to bring similar question. .
I am able to create the logical foreign key for logical table A with new joining condition (A.2=B.2) (2 is calculated logical column).
However there still exist Physical foreign key join with old condition (A1.=B.1). When I deploy this rpd, the report generates sql with (A1.=B.1) join condition.
Then,I removed this Physical foreign key join in rpd,and got a warning' logical dimension B has a source that does not join with any fact table' in consistency check.
Still after deploying this rpd , I am getting error [nQSError: 14025] No fact table exists at the requested level of detail: in report.
I am missing anything.The logical foreign key has correct join condition still it is not over riding the physical join.
Thanks for going through this question,
http://tinypic.com/r/2qiwmrr/6

Based on your comments I'm looking at documentation:
I found a Note: A logical key for a fact table must be made up of the key columns that join to the attribute tables. Logical foreign key joins may be needed if the Oracle BI Server is to be used as an ODBC data source for certain third-party query and reporting tools.
I need to see why ODBC, and unlike the Logical Foreign key join is not overriding join Physical layer.
Btw: Since you want to go with a join using defined logical column, can you use the same expression in Physical join using expression builder?
This should work.
EX: T43770.DEPARTMENT_ID = case when T43764.DEPARTMENT_ID > 10 then T43764.DEPARTMENT_ID else 0 end
Edited by: Srini VEERAVALLI on Jan 18, 2013 4:52 PM

SQL for self foreign key has me baffled

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