SQL & PL/SQL :: Query To Update Current Value In DBA View To New One
Jul 18, 2012
I am looking to build a query to update a current value in a DBA view to a new one.i.e. updating directories based on the current value:
CREATE OR REPLACE DIRECTORY 'DIRECTORY_NAME' AS 'DIRECTORY_PATH'(substr(directory_path, 1,5) + '/&dbname' {i.e. this is different for every database name }+ 'DIRECTORY_PATH'(string after /xyz/)
WHERE DIRECTORY_NAME in
( select DIRECTORY_NAME
from DBA_DIRECTORIES
WHERE DIRECTORY_PATH
like '/xyz/%'
)
i.e. resulting output should be:
CREATE OR REPLACE DIRECTORY 'ABC' AS '/xyz/DBNAME/abc/def/';
(when the directory previously was 'xyz/abc/def/') i.e. basically inserting the db name into the directory.where DBNAME is a variable more directories are added frequently so therefore this needs to be a dynamic procedure to change the directories in the db.
I have an employee table that has a paygrp_id that will be used for my subset of employees. For all the employees that have the paygrp_id = 10212 on the employee table I need to update the workbrain_user table to set the flag wbu_cansee_self to 'N'. The join between the employee table and the workbrain_user table is the emp_id.I get the following error when I run this cursor.
[error] Error on line 0 DECLARE CURSOR wbuFlag_cur IS SELECT e.emp_fullname, e.paygrp_id,wbu.WBU_CANS [code]...
I have a table I need to update called employee_history. It has almost the exact same values as another table called Employee. The difference being that the employee_history has a start date and end date. So it allows you to have overrides in the future. The employee table is static. So it only allows you to see the current data as of today.
I need to write an insert statement that will pull values from employee table and populate the employee_history table but I also have columns in the employee_history table that requires a next value and a start and end date.
From the employee table I want to select e.emp_id, e.emp_firstname, e.emp_lastname, e.shftpat_id, e.client_id from employee e
I want to INSERT INTO EMPLOYEE_HISTORY (EMHIST_ID, EMPHIST_START_DATE, EMPHIST_END_DATE, EMP_ID, EMP_FIRSTNAME, EMP_LASTNAME, SHFTPAT_ID, CLIENT_ID)
with the VALUES being (SEQ_EMPHIST_ID.nextval, TRUNC(sysdate), 01/01/3000 and the employee data from the employee table)). I bought the book Easy Oracle PL/SQL Programming but I am not finding what I need. It gives an example of a CURSOR FOR UPDATE and a reference to an UPDATE WHERE CURRENT OF.
The examples are straight forward where you take two columns from table one and update a new table with those values, or where you select a subset of employees that need a commission and update the emp table with that commission.
I am experimenting with the 4.2 version of Apex at URL.....
I have created a tabular form (based on a view with an instead of trigger) and have restricted this form to "Update only" mode. Whenever I modify a field value and submit the change I get the error "Current version of data in database has changed since user initiated update process".
I have an excel spreadsheet that queries an oracle data for some information. I am trying to get the information shown to only be from the current month. I have tried my google-fu, but all of the formulas I have found will not work and return a various error of some sort. The rest of the query works great, but I cant figure this one out. Select*From&& and I guess i need a where statement, but nothing seems to work.Where"My_Table_Name","OrderDate".
I am having a table with 5 lakhs transactions. I want to fetch the last balance for a particular date. So i have have returned a query like below.
SELECT curr_balance FROM transaction_details WHERE acct_num = '10'
[Code]...
This has to be executed for incrementing of 12 months to find the last balance for each particular month. But this query is having more cpu cost, 12 times it is taking huge time. how to remodify athe above query to get the results in faster way using analytical query. Whether this can be broken into two part in PL/SQL to achive the performance. ?
I have a form with multiple tabs, each tab showing one data block. Many of the blocks are standard in enter-query mode. I want to allow the users to navigate through the tabs while the blocks are in enter-query mode.how can i do this?
I have a dynamic query stored in a function that returns a customized SQL statement depending on the environment it is running in. I would like to create a Materialized View that uses this dynamic query.
I need to verify if the current date is grater than the 15th of the current month. If its grater than the 15th of the current month i need to do an action or if else its lesser than 15th of the current month i need to do an other operation.
I have big trouble with some Update query on Oracle 11G.I have a set of tables (5) of identical structures and a view that consists in an UNION ALL of the 5 tables.None of this table contains more than 20 000 rows.Let's call the view V_INTE_NE. Each of the basic table has a PRIMARY KEY defined on 3 NUMBERS(10,0) -> INTE_REF / NE_REF / INSTANCE.
Now, I get 6 rows in another table and I want to update my view from the data of this small table (let's call it SMALL). This table has the 3 columns INTE_REF / NE_REF / INSTANCE.
When I try to join the two tables :
SELECT * FROM T_INTE_NE T2 WHERE EXISTS ( SELECT 1 FROM SMALL T1 WHERE T2.INTE_REF = T1.INTEREF AND T2.NE_REF = T1.NEREF AND T2.INTE_INST = T1.INSTANCE )
I get the 6 lines in 0.037 seconds
When I try to update the view (I have an INSTEAD OF trigger that does nothing (just return for testing even without modifying anything), I execute the following query :
UPDATE T_INTE_NE T2 SET INTE_STATE = -11 WHERE EXISTS ( SELECT 1 FROM SMALL T1 WHERE T2.INTE_REF = T1.INTEREF AND T2.NE_REF = T1.NEREF AND T2.INTE_INST = T1.INSTANCE ) The 6 rows are updated (at least TRIGGER is called) in 20 seconds. However, in the execution plan, I can't see where Oracle takes time to achieve the query : Plan hash value: 907176690
[code]....
Predicate Information (identified by operation id):
2 - access("T2"."INTE_REF"="T1"."INTEREF" AND "T2"."NE_REF"="T1"."NEREF" AND "T2"."INTE_INST"="T1"."INSTANCE")
Note- dynamic sampling used for this statement (level=2)
Statistics ----------------------------------------------------------- 3 user calls 0 physical read total bytes 0 physical write total bytes 0 spare statistic 3 0 commit cleanout failures: cannot pin
[code]....
I get exactly the same execution plan (when autotrace is ON).Furthermore, if I try to do the same update on each of the basic tables, I get the rows updated instantaneously.
(select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 55) a, (select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 3) b where a.survey_id = b.survey_id and substr(a.question_uid , 3) = substr(b.question_uid, 2))
set b.answer = a.answer;
My second question is: The following query is giving error. What can I do?
update answers ans set (ans.answer) = (with a as (select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 55), b as (select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 3) select a.answer from a join b on a.survey_id = b.survey_id and substr(a.question_uid , 3) = substr(b.question_uid, 2) and b.answer_id = ans.answer_id) where ans.main_group_id = 3;
i want to create "on update" database trigger on materialized view which is on replication schema.I would like to update rows in table when update occurs on materialized view on master side.I wrote some code and tried with this:
CREATE OR REPLACE TRIGGER a after update on A@dirfep.us.oracle.com FOR EACH ROW BEGIN
we are trying to create a materialized view (MV) which would access the remote database through db link. Now we need to do update on the local MV so that it should be reflected on the master table.
There is no primary key on this table and we are using "complete refresh" option. since we dont have control over remote database, we are not allowed to create MV log over there.
in this scenario, if i try to create updatetable MV with complete refresh, we are getting below error:
SQL Error: ORA-12013: updatable materialized views must be simple enough to do fast refresh
I've generally operated under the assumption that if I have a query that executes properly, I should be able to create a view from that same logic. However, I've had more than one occasion where this seems to NOT be the case.
Today, I have a query using ListAgg that operates just fine when run interactively, but (in SQL Developer v 3.0.04) it gives ORA-24344 when I try to create a view using the exact same statement.
select * from t_act_rwrd_reimb_stay a where reimbursed_amt < 0 and invoice_date = '01-JAN-1900' and not exists ( select 'x' from t_act_rwrd_reimb_stay b where a.GPM_ID_STAY = b.GPM_ID_STAY and reimbursed_amt > 0 )
The above table t_act_rwrd_reimb_stay --> is from a view on the database Prod2 and this view is pulling the data from the database prod1 via dblink
When I run the same query on Prod1 it returns 3 rows. Is there any reason this is not fetching data on prod2 view? or whatz wrong with the above query
or for example if I run the above query as follows with the dblink "@prod1" it returns the data properly
select * from t_act_rwrd_reimb_stay@Prod1 a where reimbursed_amt < 0 and invoice_date = '01-JAN-1900' and not exists ( select 'x' from t_act_rwrd_reimb_stay@prod1 b where a.GPM_ID_STAY = b.GPM_ID_STAY and reimbursed_amt > 0 )
I have a view which is taking long time to get back results and this view is being used in various user queries. I noticed that the SQL of the view access some tables, data of them changes rarely. So it makes sense to retrieve that data in a materialized view and somehow re-use it.
My question is how can I use the materialized view and it's data from a query.
