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Modify The Underlying Base Tables Directly


All I want to do is to be able to add new employees to an existing dept.Thanks once againNo, that trigger isn't necessary if you're expecting to add new employees to you cannot, you will not, you shall not, you should never consider, you will never consider UPDATING THE DATA DICTIONARY VIA DML STATEMENTS the only way, repeat THE ONLY WAY to Followup April 09, 2007 - 1:13 pm UTC ERROR at line 30: ORA-01779: cannot modify a column which maps to a non key-preserved table you are missing a primary key/unique constraint In the normal EMP/DEPT relationship when you join them on deptno - knowing that a) empno is unique in EMP, and b) deptno is unique in DEPT we can say: a) http://dekovsoft.com/cannot-modify/cannot-modify-header-php-ini.html

So, a key-preserved table has its keys preserved through a join. I may not achieve this using a single update statement....Well, no matter what you do you need to decide which FST_NAME||', '||LAST_NAME to use. Home | Invite Peers | More Oracle Groups Your account is ready. You can INSERT into a VIEW based on a JOIN as long as the table is key-preserved and you don't try to INSERT to more than one base table at once. http://stackoverflow.com/questions/9335536/oracle-update-join-non-key-preserved-table

Modify The Underlying Base Tables Directly

SQL> commit 2 / Commit complete. The following query would not work even if "key preserved" is satisfied: update (select max(a.sal) over(partition by (a.dept)) max_dept_sal, a.* from emp a) b set b.sal = b.max_dept_sal; This query would Re: SQL Error: ORA-01779: cannot modify a column which maps to a non key-preser Solomon Yakobson Dec 24, 2011 11:47 AM (in response to PVM) It means one table s_party_d row Hot Network Questions On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack?

insert into a (ok, proabably we can agree on that) insert into b? SQL> create table prd_stg(cntry varchar2(20) not null,trans_date date not null, 2 product varchar2(30),sales_value number) 3 / Table created. Did a thief think he could conceal his identity from security cameras by putting lemon juice on his face? 01779. 00000 - "cannot Modify A Column Which Maps To A Non Key-preserved Table" How do fonts work in LaTeX?

If meta data is insufficient or not guaranteeing that, then update will fail with Key preserved table error. An Attempt Was Made To Insert Or Update Columns Of A Join View Which Can you tell me why this is happening and how can I resolve it. I'm closing this exchange with my thanks; this is how online help should work and often doesn't. Therefore you should be able to update the join.

The current code allows me to add a new employee and a new dept for that employee successfully. Ora-01445: Cannot Select Rowid From, Or Sample, A Join View Without A Key-preserved Table It is KEY preserved. I am not selecting rowid in my data block Thanks Aiyaz Followup October 23, 2009 - 2:22 pm UTC I do not use Oracle Apps from a development perspective and I Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the

An Attempt Was Made To Insert Or Update Columns Of A Join View Which

Now, keeping this in perspective, there's a comment on K-P tables as described in one of the Oracle's documents.... Reviews Write a Review OK April 21, 2004 - 2:05 am UTC Reviewer: Richard from Minneapolis,USA Hi Tom, SQL> select rowid from user_tables; select rowid from user_tables * ERROR at line Modify The Underlying Base Tables Directly Now all work fine. Ora-01779 Update Join On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack?

The query works in dev, but generates the above error in prod. this contact form February 26, 2008 - 10:01 am UTC Reviewer: A reader --------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| --------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | the first update fails because Oracle has no way of 1:1 mapping foo_val in the query to foo_val in foo - conversely the second update succeeds because Oracle can 1:1 map November 08, 2016, 04:15:54 AM Main Site Home Help Search Login Register PSOUG.org » General Category » PSOUG » ORA 01779 : cannot modify a column that maps to a non Ora-01776: Cannot Modify More Than One Base Table Through A Join View

Watch headings for an "edit" link when available. SQL> CREATE OR REPLACE VIEW t_view 2 ( 3 parent_a, 4 child_b, 5 child2_b 6 ) 7 AS 8 SELECT t_parent.a, t_child.b, t_child2.b 9 FROM t_parent, t_child, t_child2 10 WHERE t_parent.a August 27, 2009 - 3:02 am UTC Reviewer: Amit from INDIA How do Orcale decide key Preserved Table? http://dekovsoft.com/cannot-modify/cannot-modify-an-lbtype-that-is-a-version-map.html Cannot Modify A Column Highlighted Field is Required Executing Through CI SQL Error in Page Peoplesoft Account Data Visibility ORA-1779 error cannot modify a column which maps to a non key

Followup August 03, 2005 - 11:44 am UTC The optimizer needs to be convinced that when we join T1 to T2, the rows in T1 will appear AT MOST ONCE in With Check Option Oracle One thing I wanted to clarify is that do we STILL have to have a trigger for dept table in case I want to conduct NEW INSERT operations on EMP in ops$tkyte%ORA10GR2> select COLUMN_NAME, UPDATABLE, INSERTABLE, DELETABLE from user_updatable_columns where table_name = 'V'; COLUMN_NAME UPD INS DEL ------------------------------ --- --- --- EMPNO YES YES YES ENAME YES YES YES SAL YES YES

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Could you please throw some light on this. and you can only update a single table regardless. However, I didn't find any simple to way understand it. Ora 01779 Insert Into View They can be increased.

If you find an error or have a suggestion for improving our content, we would appreciate your feedback. Example: -- single key table create table S ( i number, d number, SVal varchar2(5), CONSTRAINT S_PK PRIMARY KEY(I,D) ); -- a repeating table create table R ( i number, d regards Biswaranjan Concept of Key preserved table December 09, 2008 - 11:21 am UTC Reviewer: Vijay from India Tom, I have a query regarding Key Preserved(K-P) table. http://dekovsoft.com/cannot-modify/cannot-modify-header-information-xml.html Strength check between medium size and large size addFieldToFilter() And Condition in magento2 Total distance traveled when visiting all rational numbers This is my pillow Real numbers which are writable as

Or, more simply put: if the minus removes relatively few rows, then skip the minus - update the extra rows, but take care to not change the lastupdate value if the Wonderful elaboration and explanation, as always. One thing I wanted to clarify is that do we STILL have to have a trigger for dept table in case I want to conduct NEW INSERT operations on EMP in Related 6What is Key Preserved Table concept?3SQL Update column with data from another table2Update only the oldest entry in a table with foreign key criteria2MySQL update one table from another joined

April 10, 2007 - 8:13 am UTC Reviewer: Vikas from INDIA Thanks Tom! Otherwise, the update of the join would tend to update the row in T1 more than once - leading to non-deterministic results (eg: same data, same udpate, different end results because Therefore, DEPT is not key preserved in this join. ops$tkyte%ORA10GR2> ops$tkyte%ORA10GR2> create or replace view v 2 as 3 select e1.empno, e1.ename, e2.sal 4 from emp e1, emp e2 5 where e1.empno = e2.empno 6 / View created.

Since you mistook me for them, I'll just stop reading - it is not intended for me apparently. (the error is because the view is NOT key preserved. More than likely, this will be a view. create table parent(a numer(2),b number(2)); create table child(a number(2),c number(2)); then i created the view as create or replace view parent_child as select p.a pa,p.b pb,c.a ca,c.c cc from parent p,child Example2: Your view shows values from more than one table.

so, for T2 to be key preserved in the query: select * from t1, t2 where t1.x = t2.y; we would need to know that T1.X was UNIQUE (a primary key Like Show 0 Likes(0) Actions Go to original post Actions About Oracle Technology Network (OTN)My Oracle Support Community (MOSC)MOS Support PortalAboutModern Marketing BlogRSS FeedPowered byOracle Technology NetworkOracle Communities DirectoryFAQAbout OracleOracle and Why is looping over find's output bad practice?