Cascade Update Manually

Hi,
If I want to update a Primary Key to a new value and there are existing references to it in a Foreign table, and I do not have On UPDATE CASCADE, how can I accomplish this?
do I have to delete all the child records, update the parent's primary key, and then insert the child records again w/ the updated primary key?
Thanks!

Please post DDL, so that people do not have to guess what the keys, constraints, Declarative Referential Integrity, data types, etc. in your schema are. Learn how to follow ISO-11179 data element naming conventions and formatting rules. Temporal data should
use ISO-8601 formats. Code should be in Standard SQL as much as possible and not local dialect.
This is minimal polite behavior on SQL forums.
>> If I want to update a PRIMARY KEY to a new value and there are existing references to it in a Foreign [sic: referencing] table, and I do not have ON UPDATE CASCADE, how can I accomplish this? <<
Alter your table and add the constraint. If you missed this one, look for more design errors and commissions.
>> do I have to delete all the child [sic: referencing] records [sic: rows], update the parent's [sic: referenced] primary key, and then insert the child [sic] records [sic]again w/ the updated primary key?<<
You need to learn basic terms and concepts! And t kick the guys that forgot this in the first place.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

Similar Messages

When the user press the button Calculate Tax (see attached doc) and click on Tax details then this should be updated automatically. But it does not work it is empty and the user has to update manually.

When the user press the button Calculate Tax and click on Tax details then this should be updated automatically. But it does not work it is empty and the user has to update manually.
All setup looks fine.
Please let me know what can be done on this?
Regards,
Peu

HarryAustralia wrote:
I recently updated my ipad wifi only to the new ios 6.1.2 and initially I had the auto cover lock option which can be seen in the Generals tab, but then it stoped working!! Before the update, the auto cover lock worked fine. So after trying all the options, I then did a complete reset on the ipad and now its gone all together from the General tab!! I can no longer see the "auto cover lock" option.
The iPad cover lock is for when you use a cover with magnets in it to lock and unlock the iPad when you close the cover or open it. Try running a refrigerator magnet along the sides of the iPad and see if that trips the iPad Cover Lock back into the settings.
That is not the same thing as the iPad Auto Lock setting which allows you to set an allotted time before the iPad goes to sleep.
You can try resetting all settings to see if the Auto Lock feature retinrs to the iPad.
Settings>General>Reset>Reset All Settings. You will have to enter all of your device settings again.... All of the settings in the settings app will have to be re-entered. This can be a little time consuming re-entering all of the device settings again.

While attempting to install the latest iTunes update, version 10.5.3, I encountered an issue. I was forced to download this update manually which, after restarting my Windows 7, did not install properly. How do I get it to install this update?

While attempting to install the latest iTunes update, version 10.5.3, I encountered an issue. I was forced to download this update manually which, after restarting my Windows 7, did not install properly. How do I get it to install this update?

The installer should have gone into your Apple Software Update folder:
C:\USERS\<user name>\AppData\Local\Apple\Apple Software Update
Right mouse click the msi file and select INSTALL

Download and install the updates manually

I have just purchased Photoshop CS6 and ran the updater from within Photoshop. I know some of the updates worked but not all. So I ran it again 3 or 4 attempts now have failed with this message:-
It has failed to install -
Extension Manager 6.0.6 Update
with the error message -
Installation failed. Error Code: U44M1P7
I have found a solution on the forum-
Download and install the updates manually. Go to http://www.adobe.com/downloads/updates and download the update that you are trying to install.
There is no update available there which refers to Extension Manager 6.0.6 Update
I opened the Adobe Application Manager and run it for updates, it reports I'm good - no updates! But when I then try for an update from within Photoshop I still get the same message telling me I need to instal ExtensionManager 6.0.6 Update
I have tried to find the error log from within my system - but failed misserably (I am on Windows 7-64)
So please, where do I go from here? Do I need Extension Manager? What does it do? Is it vital I install this update?

Something really weird with the latest update for us poor perpetual license users.
Tried to install the upate and received a bunch of error codes U44MP17 on the first try, U44MP27 on the second (go figure why the error code changed) then tried the manual update - that failed as well arrgh!!!!
Now checking for updates, Help/Updates it tells me that the only update outstanding is ACR8.1 - weird I thought as about is reporting 13.0 - so checked the binaries and Photoshop.exe (64 bit) shows a date of 6/11/2013 so although I received errors it looks like the update maybe, sorta took.
The other binaries with the 6/11/13 date are
AdobeOwl.dll
AdobePDF.dll
AlignmentLib.dll
AGM.dll
Cooltype.dll
TFKGEOM.dll
All works OK but a tad confused as to why this may have happened - but given the robustness of AAM maybe I am not surprised.
Holding off with the ACR8.1 update until next week, I have a wedding shoot tomorrow - cannot afford to fall back or reinstall anything
So can anyone confirm that my update really took?
So Trevor, what is so special about Monday?
Mike
PS checked the 32 bit binaries and they have a different set of binary updates
TFKernal.dll
PSArt.dll
AGM.dll
image_compiler.dll
PSViews.dll
AlignmentLib.dll
CIT.dll
Photoshop.exe
Cooltype.dll

How to cascade update

how to cascade update?

Sorry everyone for going regional with my Mexican fiend!
In MEXMAN's first case, integrity on related data was already being enforced through a valid foreign key (TIZAYUCA.REGLAFAB_PRODUCTO_FK). However, the user wanted to update data included in the foreign key relationship. To acomplish this, I recommended to change the actual constraint state to defer validation until commit. Using the now familiar column names, the sentences are:
ALTER TABLE TIZAYUCA.REGLA_FABRICACION
DROP CONSTRAINT REGLAFAB_PRODUCTO_FK;
ALTER TABLE TIZAYUCA.REGLA_FABRICACION
ADD CONSTRAINT REGLAFAB_PRODUCTO_FK FOREIGN KEY (GRUPO, PRODUCTO)
REFERENCES TIZAYUCA.PRODUCTO (GRUPO, CLAVE)
INITIALLY DEFERRED;
In MEXMAN's second case, a wholly new integrity needs to be enforced between two tables but some actual data present in both tables do not validate the desired constraint. The offending rows from the child table (TIZAYUCA.PRESENTACION) may be obtained executing
SELECT *
FROM tizayuca.presentacion t
WHERE (t.grupo, t.producto) NOT IN
(SELECT p.grupo, p.clave
FROM tizayuca.producto p);
MEXMAN has 3 choices:
1. deleting the offending rows in the child table (TIZAYUCA.PRESENTACION) before executing
alter table TIZAYUCA.PRESENTACION enable constraint PRES_PROD_FK;
2. inserting the missing rows in the parent table (TIZAYUCA.PRODUCTO) before executing
alter table TIZAYUCA.PRESENTACION enable constraint PRES_PROD_FK;
3. making the new constraint ignore the present data and enforcing the relationship starting with new data:
alter table TIZAYUCA.PRESENTACION
add constraint PRES_PROD_FK foreign key (GRUPO, PRODUCTO)
references TIZAYUCA.PRODUCTO (GRUPO, CLAVE)
deferrable initially deferred
enable novalidate;
(drop the present PRES_PROD_FK constraint first)
Please find more on the constraint topic here:
http://download-east.oracle.com/docs/cd/B14117_01/server.101/b10759/clauses002.htm#CJAFFBAA
and here:
http://download-east.oracle.com/docs/cd/B14117_01/server.101/b10759/clauses002.htm#i1002273
Best regards,
Luis Morales,
ConsiteNicaragua.com

Cascade update on tables

Hi,
I know that oracle apps coding standard prohibits cascade delete feature in the database. Hence it should be implemented at application level.
However my question is regarding cascade update. Need is to update the header's WHO columns, when an update is made to any of the lines. Both the tables are custom tables. I was thinking to write a trigger, instead of putting this logic in application.
What should be the better solution and why? Writing trigger or implementing this functionality in application (OAF).
Abdul Wahid

Hi Sandeep.
Thanks for the answer.
However its still half.
Answer is considering putting the logic at application level,fine. but why?
Question is about its benefits over putting the trigger on the lines table.
Why I am favouring trigger is due to following reasons..
1. Lesser maintenance. (Just one trigger, no code jungle)
2. Update of header with line' WHO is always expected (from application or any concurrent program)
3. And putting things in application, brings challenge of maintaining integrity constrains....
This third point is main reason I am seeing behind oracle's statndard for cascade delete, cause they are seeded tables and putting a trigger on header table may delete lines rows always (Very specific to that screen), which may not be desirable in a lot cases.Huge integrity risk.
This case is of update desirable always, where I am seeing using trigger as help to maintain integrity, instead of risk to integrity.
Is there any doc about such situation( coding and design guidelines). I searched net and metalink, but yet did not find.
(my application is OAF, and its implemented also by the grace of Allah.)
Abdul Wahid

Best practice when doing large cascading updates

Hello all
I am looking for some help with tackling a fairly large cascading update.
I have an object tree that needs to be merged using JPA and Toplink.
Each update consists of 5-10000 objects with a decent depth as well.
Can anyone give me some pointers/hints towards a Best practice for doing this? Looping though each object with JPA's merge takes minutes to complete, so i would rather not do that.
I have never actually used TopLinks own API before, so i am especially interested if TopLink has an effective way of handling this, preferably with a link to some related reading material?
Note that i have a somewhat duplicate question on (Noting for good forum practice)
http://stackoverflow.com/questions/14235577/how-to-execute-a-cascading-jpa-toplink-batch-update

Not certain what you think you can't do. Take a long clip and open it in the Viewer. Set In and Out points. Drop that into the Timeline. Now you can move along in the Viewer clip and set new Ins and Outs and drop that into the Timeline. Clips in the Timeline are created from the Ins and Outs you set in the Viewer.
Is that what you want to do? If it is, I don't where making copies of the clip would work for you
Later, if you want to match up a clip in the Timeline to that master clip, just use Match Clip (find) in the timeline to find where it correaltes to your main clip
You can have FCE automatically create subclips at camera cut points by using DV Stop/Start Detect if that is what you're looking for

How to put photoes in ipod if it is in "update manually" condition ?

i am using a new computer and if i put in"update automatically" then all the songs left in my ipod will surely be gone so how do i update photoes and videos on my ipod if it is in "update manually" condition ? ....(however i know how to update songs i.e dragging it)...thankx

Does it appear in Device manager? See here more details.
http://support.apple.com/kb/ts1496
Have you tried a different USB port as well as a different USB cable if at all possible? Does it appear when you connect it to another system?
B-rock

How to update Manually/Automatically with iTunes 7.0.1

Hi all,
I just downloaded iTunes 7.0.1. I haven't connected my iPod as yet (which is still running v 1.1.2 firmware) because I can't find the check box I am after.
I want to tell iTunes that I will upate my iPod manually, and if memory serves me correctly previous versions of iTunes have had a check box for this in the preferences tabs, but I can't see it anywhere with v 7.0.1.
I don't want to connect my iPod until I am convinced that it will only update manually, as I have some albums on there that are not in my library (due to a corrupt backup of my library when I had to reformat my hard drive!). Obviously if I plug it in and it updates automatically I will lose these albums forever.
Any ideas?
Thanks all.
Matt.

You can only change it to manual update when you connect it to iTunes; when iTunes recognizes your iPod it will show you a summary of it and start updating it, you can stop the update by clicking the x at the top. If those albums were bought off of iTunes then you can put them back to iTunes by right-clicking the iPod icon on iTunes and selecting Transfer Purchases.
You can also use YamiPod which takes music from your iPod and puts it back to your computer. http://www.yamipod.com/main/modules/home/

Cascade Update in Oracle Constraint ?

How can I create a Constraint in Oracle 9i with Cascade Update Option like On Delete Cascade.
It means, if I change the primary key of master table, the foreign key of all the relevant child tables should be updated automatically.
Any idea please ?
Best Regards,
Luqman

Oracle doesn't intrinsically have the concept of a CASCADE UPDATE.
From a data modeling standpoint, primary keys should never, ever change under any circumstances. If a column can ever change, it should not be used as a primary key.
Tom Kyte has a package and some code to generate triggers that would do this sort of thing
http://asktom.oracle.com/~tkyte/update_cascade/index.html
but I would strongly suggest you change the data model rather than going down that path.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Cascade update

Is there a way in oracle to achive cascade update functionality just as cascade delete?

It is possible
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:5773459616034
However, as Tom indicates, it is a very bad practice. If you envision ever contemplating changing primary keys, you need a new primary key. A sequence-generated synthetic key column is an excellent choice if there is no natural key.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Cascade Update (Urgent)

Dear Friends,
I need to update the master records have records in details tables. Can anyone suggest me the feature of CASCADE UPDATE. So that moment i changed the master record it should reflect to detail records.
I DON'T WANT TO USE CURSOR TO UPDATE RECORDS IN DETAILS.
Thanks.

Hi,
You can try to use the pre-update, on-update, post-update trigger for the master-block. In that you can parse an update statement for the detail block. This will 'simulate' a cascade delete
Hope this helps.

ON CASCADE UPDATE in ODI ?

Hello,
Does any one know if this works with Oracle as ODI shows this option in Model --> datastores --> constraints --> foreign key reference.
Thanks
Greenwich

Oracle doesn't intrinsically have the concept of a CASCADE UPDATE.
From a data modeling standpoint, primary keys should never, ever change under any circumstances. If a column can ever change, it should not be used as a primary key.
Tom Kyte has a package and some code to generate triggers that would do this sort of thing
http://asktom.oracle.com/~tkyte/update_cascade/index.html
but I would strongly suggest you change the data model rather than going down that path.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

I'm trying to update the latest version of iTunes but my computer gives me an error saying to go to tools then download only and update manually. What do I do?

I'm trying to update the latest version of iTunes but my computer gives me an error saying to go to tools then download only and update manually. What do I do?

Try updating using an iTunesSetup.exe (or iTunes64Setup.exe) installer file downloaded from the Apple website:
http://www.apple.com/itunes/download/

Updating PK with same value - effect on CASCADE UPDATE

Hello,
I would like to understand how sql server 2008 deals with cascade updates
For example I have
Parent table: Employee with column Id as varchar(20) primary key
Child table with IdEmployee as varchar(20) foreign key
I set up Cascade Update for those two tables, meaning any change to primary key in Employee table will cause update in child table rows that match affecting Id
Scenario 1:
Update Employee
set Id = 'ABC',
Name = 'something new'
where Id = 'CCC'
Result of child table: all rows with foreign key IdEmployee and value of 'CCC' are updated. Expected behavior.
Scenario 2:
Update Employee
set Id = 'ABC',
Name = 'something new 2'
where Id = 'ABC'
This time, i am doing something different. I am beside update of column Name with new value, also update primary key but
with SAME value
Question is: what is going to happen to child rows? Are they ALL going to UPDATE due to CASCADE UPDATE
So far, what i did in order to find solution is:
1. I put an timestamp column in child table that should update each time row gets updated
2. I put a trigger for update event on child table that will write something to some log table
*After I set up those two I ran example like above just to be sure timestamp gets changed as well trigger is being fired
Results of updating PK with same value:
1. Timestamp didnt change
2. Trigger didnt fire
Is this enough to make conclusion that updating primary key with same value ALONG with updating some other columns won't
affect child tables with UPDATE CASCADE ON
Update:
Database is CI AS collation
If i do following
Update Employee
set Id = 'abc',
Name = 'something new'
where Id = 'ABC'
1. Timestamp will change
2. Trigger will fire
Conclusion: Case sensitive is important here!
Thank you very much in advance
Milos

>> would like to understand how sql server 2008 deals with cascade updates <<
Your posting has a number of conceptual errors.
1. The terms “parent” and “child” are not RDBMS; they are used in network databases. We have “referenced” and “referencing” tables; they can be the same table.
2. A table models a SET of things, so there is no “Employee” table unless you truly have a one-man company. We want a collective or plural name for the SET/table. A better name is “Personnel” for this table.
3. Her is no such thing as a generic “id” in RDBMS; it has to be “<something in particular>_id” to be valid. Identifiers are usually fixed length
4. It is very, very rude not to post DDL on a forum. You also do not know the ISO-11179 Rules for data element names. They do not change names from table to table! Does your name change whenever you use it in a new place?? NO! Same principle with data.
5. The ISO standard uses “<property>_<attribute property>” syntax, no the old PascalCase.
6. Why did you post a useless narrative? How do we compile “I SET up Cascade UPDATE for those two tables,..” to test it??
CREATE TABLE Personnel
(emp_id CHAR(20) NOT NULL PRIMARY KEY,
emp_name VARCHAR(25) NOT NULL,
CREATE TABLE Health_Plan
(health_plan_acct CHAR(20) NOT NULL PRIMARY KEY,
emp_id CHAR(20) NOT NULL
REFERENCES Personnel(emp_id)
ON UPDATE CASCADE
ON DELETE CASCADE,
Scenario 1:
UPDATE Personnel
SET emp_id = 'ABC',
emp_name = 'something new'
WHERE emp_id = 'CCC';
Result of child table: all rows with foreign key emp_id and value of 'CCC' are updated. Expected behavior.
Scenario 2:
UPDATE Personnel
SET emp_id = 'ABC',
emp_name = 'something new 2'
WHERE emp_id = 'ABC';
This time, I am doing something different. I am beside UPDATE of column emp_name with new value, also UPDATE PRIMARY KEY but
with SAME value.
>> Question is: what is going to happen to child [sic: referencing] rows? Are they ALL going to UPDATE due to CASCADE UPDATE. <<
SQL uses a set-oriented model, so the whole table is updated as a unit of work in theory.
So far, what I did in order to find solution is:
>> I put an timestamp column in child [sic: referencing] table that should UPDATE each time row gets updated <<
Why? It is not in the SET clause list; it cannot change. As an aside, The T-SQL TIMESTAMP is not the ANSI/ISO TIMESTAMP; it is DATETIME2(n) in T-SQL. The old TIMESTAMP is being deprecated because it stinks both in concept and implementation.
>> I put a trigger for UPDATE event on child [sic: referencing] table that will write something to some log table.<<
TRIGGERs are fired by what is called a “database event” shown in the ON [DELETE | UPDATE] clause. T-SQL adds INSERT as an event. An update to any value or to no value at all is still an update. Depending on the collation, case may or may not matter in the final
outcome.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

Cascade Update Manually

Similar Messages

Maybe you are looking for