SQL & PL/SQL :: Creating A Trigger
Jul 19, 2011
I need to create a trigger for the below case:
index_id Time_vertex_id date rate pre_rate
4 1 17-06-2011 4.7 6.4
4 1 16-06-2011 6.4 7.4
4 1 14-06-2011 7.4
4 1 15-06-2011 8.4 7.4
the index_id and time_vertex_id will be unique and when the date is 17th i.e the first date will be inserted the current rate will be 4.7 and the previous rate will be blank and when another date is inserted i.e 16th the previous rate of 17th will be the current rate of 16th i.e 6.4.
when 14th is being inserted, the previous rate of 16th will be the current rate of 14th i.e 7.4 and if after 14th is being inserted, 15th is being inserted, then the previous rate of 16th should be updated as per the current rate of 15 say 8.5.
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May 25, 2012
I would like to create a trigger on a table, but only if the table exists.
This is what i've got so far:
create or replace function tableExists (tablename in varchar2) return boolean
is
c int;
begin
[Code].....
This would give me the error:
PLS-00103: Encountered the symbol "CREATE" when expecting one of the following: ( begin case declare exit for goto if loop mod null pragma raise return select update
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Jul 24, 2009
I am trying to create trigger through Procedure due to following reasons-
1. The name of the column on which trigger will execute, is to be fetched dynamically.
2. The name of the column to be updated, is to be fetched dynamically.
Here is the sample code-
CREATE OR REPLACE PROCEDURE test2
IS
var VARCHAR2 (4000);
uname VARCHAR2 (30);
attribtask VARCHAR2 (100);
mapcol VARCHAR2 (100);
BEGIN
[code].........
On execution, the procedure throws the error of 'Insufficient privileges'. The 'var' seems to be the main culprit because the issue disappears if var is set to 'select * from dual'. Also, if i take the output (value of var) given by DBMS_output.put_line function and execute it explicitly, trigger gets created.
In addition- The procedure is (and being executed) within the same user/schema under which trigger is going to be created.
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Sep 21, 2008
I have a table tblcustomer and a view called vworder. I need to create a trigger such that any data being added into vworder first checks if the field customerid has the data in customerid of tblcustomer.. all it has to do is spit out a error "Customer ID not found"
So I created a view such as
Quote: create or replace TRIGGER trig_order
BEFORE INSERT OR UPDATE ON vworder
FOR EACH ROW
DECLARE
cust_id VARCHAR2(20);
BEGIN
SELECT customerid INTO cust_id FROM tblcustomer WHERE customerid = :new.customerid;
EXCEPTION
WHEN NO_DATA_FOUND THEN
Raise_application_error(-20000, 'Customer ID Does Not Exist');
END;
But it comes with error
Quote: ORA-25001: cannot create this trigger type on this type of view 25001. 00000 - "cannot create this trigger type on views" *Cause: Only INSTEAD OF triggers can be created on a view. *Action: Change the trigger type to INSTEAD OF.
I am not an expert at all and I need to finish this today itself.
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Jan 4, 2007
Having trouble creating a trigger to populate another table.
The SQL:
CREATE OR REPLACE TRIGGER "P_M_YES"
AFTER INSERT OR UPDATE ON DOMAIN
REFERENCING NEW AS NEW.P_M AND OLD AS OLD.P_M
FOR EACH ROW
WHEN (NEW.P_M = YES)
BEGIN
INSERT INTO PAGE_MAKER VALUES(:NEW.D_NAME, :NEW.USER_ID);
END P_M_YES;
/
ALTER TRIGGER "P_M_YES" ENABLE
/
I get an invalid trigger specification.
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Mar 22, 2007
I've been assigned a task at work that consists of creating a trigger on a table. This table is used to store temporary query results. I'm trying to make a trigger to clean the table so old results don't accumulate.
There is a column named DATE_UPDATED that stores an Oracle Date for when the row was inserted/updated. If the row is not updated in 12 hours, I want to delete it.
Here is what I have so far.
CREATE OR REPLACE TRIGGER clean_tableName
AFTER INSERT OR UPDATE
ON tableName
BEGIN
END clean_tableName;
As you can see, I don't have an actual function body yet. What would be the best way to accomplish this? Should I declare a variable to store the current Date+12 hours and then just compare that in a delete statement?
I'm thinking something like:
DECLARE
laterDate DATE := SYSDATE+12; // Not sure how to add 12 hours to a date.
BEGIN
DELETE FROM tableName WHERE DATE_UPDATED > laterDate;
END clean_tableName;
But I'm not sure how to add 12 hours to the current date. Is there a way I can do this without defining a variable?
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Aug 14, 2011
I am new to PL/SQL and how to create a trigger to compute the population of the school from the groups of students and store back in population. It also needs to check that there is a min of 10 students to a school.
CREATE OR REPLACE TYPE group_type AS OBJECT
(
group_nameVARCHAR2(20),
tutor_idNUMBER(5),
[code]...
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Apr 6, 2012
When i try to create a trigger , i ended up with error.
SQL> create or replace
2 TRIGGER LOGON_TRG AFTER LOGON ON DATABASE
3 BEGIN
4 INSERT
5 INTO
6 user_audit_log
7 SELECT
8 user#,
[code]....
Warning: Trigger created with compilation errors.
SQL>
SQL> show error
Errors for TRIGGER LOGON_TRG:
LINE/COL ERROR
-------- -----------------------------------------------------------
2/5 PL/SQL: SQL Statement ignored
17/17 PL/SQL: ORA-00942: table or view does not exist
The command used to resolve the error is
GRANT SELECT ON v_$session TO jack;
Jack user has sysdba privilege. My question is 'sysdba' is a super and special user which has all the privileges in database. Then why does it need SELECT privilege on v$session to user to create the trigger?
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Aug 24, 2011
I know this is an old thread and I just started working with triggers. I want to check if the data being inserted is already in the table and if not insert it:
create or replace trigger t_triggername
before insert on tbl_tablename
for each row
begin
if(:new.user_id <> :old.user_id) then
insert into tbl_tablename(user_id, location)
values (:new.user_id, :new.location);
end if;
end;
what if I wanted to keep the user but only update location if the user is already in the table. I've tried doing it this way:
create or replace trigger t_triggername
before insert on tbl_tablename
for each row
begin
if(:new.user_id <> :old.user_id) then
insert into tbl_tablename(user_id, location)
[code]...
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Sep 20, 2011
i need a trigger with alter commands to alter the table structure,it will be captured in a separate meta data table(META)
CREATE OR REPLACE TRIGGER meta_alter AFTER Alter ON SCHEMA
BEGIN
update meta set column_name=:new where table_name=ora_dict_obj_name column_name=:old;
END;
/
Meta table contains Table name and column name..i attached the table data in atext file
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Jan 25, 2012
I'm having a problem with the When-timer-Expired trigger.I am creating a timer on the On-Error trigger of the block. in the when-timer-expired :
message (11); exit_form(no_validate);
If i run the program program for the first time,message 11 doesn't show thus it doesn't fire the when-timer-expired trigger. But if i logout from application server and enter all over again,the when-timer-expired works !
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Jul 1, 2011
How can "call one trigger of item in trigger of form"
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Mar 10, 2010
Can we call trigger in another trigger,if it is possible any example.
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Feb 7, 2011
creating an ASM instance. I've never done this before and searched all known documentation. I just can't seem to figure this out. This is an 11g database on a WinXp machine for testing purpose before attempting to do this on a live production environment
D:\app\user\product\11.1.0\db_1\BIN>localconfig add
Step 1: creating new OCR repository
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'Dummy\user', privgrp '
Operation successful.
Step 2: creating new CSS service
Failed to create the new CSS service, err(5)
failed to create CSS services
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Feb 18, 2011
I have created a sequence and I would like to create a surrogate key in one of my tables that will take the values of the sequence. I searched for hours but couldn't find any example of how to do that.
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Jun 3, 2010
If iam create a new role in scott/tiger user why not creating. can any one explan me.
SQL> create role test_role;
create role test_role
*
ERROR at line 1: ORA-01031: insufficient privileges
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Sep 18, 2010
I am writing the following PLSQL code-
BEGIN
DBMS_SCHEDULER.CREATE_JOB
(
job_name=>'TRIAL JOB',
job_type=>'PLSQL BLOCK',
job_action=>
[code]........
The new table used above has the following structure
Name Null? Type
STAMP TIMESTAMP(6) WITH TIME ZONE
However I get the following error on execution and am not able to make out why?
BEGIN
*
ERROR at line 1:
ORA-01858: a non-numeric character was found where a numeric was expected
ORA-06512: at line 3
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May 2, 2013
We make a 'SELECT' and then create a file with the results and send it by email... what we want to do is , if there are no results from that select , not sending the email neither creating the file..
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Nov 14, 2012
I have a requirement to create an xml file from a table. The table has product number repeated for each values of attrbiutes. Is it possible to create an xml file with product_id only once and all the attributes and values listed under that.
Example
WITH tmp AS
(SELECT '0983433' AS product, 'color' prd_attr, 'blue' AS val
FROM DUAL
UNION
SELECT '0983433' AS product, 'size' prd_attr, '23' AS val
[Code]...
And the file should be like the following
PRODUCTS>
- <PRODUCT>
<ID>0384491</ID>
- <NATURE>
<SALE>Y</SALE>
[Code]....
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Mar 14, 2013
How to create a new session from a pl/sql. My requirement is that i will package which should run on new session and execute it.
BEGIN
A; --Calling package
B; --Calling package and this should run on new session.
C; --Calling Package
end;
Now when I will run the this plsql block, then A,C should execute will run in this package only but B will run separate session.Whole idea to have better performance. I heard we can use PRGMA AUTONOMOUS_TRANSACTION, but this is not working.
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Sep 12, 2010
I created a form that would allow a user to create another user.i tried creating a user in forms 6i using the following code on the when button pressed:
BEGIN
forms_ddl('create user'||:user_name||'identified by'||:pasword);
commit_form;
END;
pasword and user_name are captured in the form.
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Feb 7, 2013
There are 2 databases, database A and database B. Database A is Oracle 11.2.0.2 which runs on linux and Database B is Oracle 11.2.0.2 which runs on windows xp machine. In database A, there are 100's of tables which are being updated every 10 minutes or 15 minutes. For reporting purpose, the developer wants to run report for the tables. But since database A is being updated every now and then, generating reports takes almost 15 to 20 minutes. So the reports can be generated in Database B. Once in a day the database B should have the updated data from database A so that the reports can be generated in database B with less time. What could be the best solution for the database B to have the updated data on daily basis from database A in oracle?
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Oct 16, 2006
how to i insert a constraint of words into the table example below.I am new to this stuff man.
Create table Orders
(
orderID Number(8) Primary Key,
orderDate Date Not Null,
methPmt Varchar2(10),
custID Number(5),
orderSource Number(2),
Foreign Key(custID) Reference Customer(custID),
Foreign Key(ordersource) Reference OrderSource(ordersource)
);
The catch is I am required to enter a constraint of the methPmt will only take values of "CASH", "CREDIT" or "CHEQUE" only.
How am I suppose to enter this constraint value into the creation of this table?
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Aug 24, 2008
I'm modifying a package which contains a function with different parameters (say cno, gno, pname etc) need to be passed though it and that function is called by the cursor later in the program. I need to create a cursor (select statement) for every class (a program set)...i.e. multiple select statements for a program set with different values. The parameters needed to be passed correspond to same columns in different tables...so do i have to refer those tables everytime i'm passing the parameters using a select statement? The Program accepts the parameters as an array (list of parameters) and returns a cursor and the program handles one program set (class) at a time. That parameter list will be in a loop..i.e. it will be repeated for every certain combination (say cno - pname combination). So ... How should i proceed and create a select statement with different parameters declared in the function of type string making it dynamic and returning them using ref cursor?
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Jun 22, 2010
I have data in multiple oracle tables. I have to create a extract flat file after applying some validation and business logic on it and store it in unix server with naming convention FF_RMS_SC_<<YYYYMMDDhhmm>>.txt.This job will be scheduled to run daily to create the flat file. I guess pl/sql and unix needs to be used.
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Aug 6, 2010
error while creating a catalog db
error creating db
ORACLE error from recovery catalog database ORA-01552: cannot use system rollback segment for non-system tablespace 'TS'
ORACLE error from recovery catalog database:ORA-00942:table or view doesnt exist
RMAN-00571:--------------------------------------------------------------------------------------------------
RMAN-00569----------------ERROR MESSAGE STACK FOLLOWS-------------------------------------------
RMAN-00571:---------------------------------------------------------------------------------------------------
RMAN-06433:error installing recovery catalog
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Aug 28, 2007
I need to create a report that show the overall performance of the system in hourly basic. I need to check all the transaction table in the system. So I try to find Cross Tab query. I need display hourly basic in column. From 00 hour to 23 hour.
In my table i will have a sysdate that track all the record DD/MM/YYYY HH24:Mi, so now i need so split it to a hourly in column. This is how it will look like. Think show in picture is easier.
Each row actually retrieve from a table. So basically i need to count each table, on that day got how many transactions then split all to a hourly basic and display it.
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Oct 26, 2011
I am having trouble with creating a view based on the following: -
Total hours flown EVER, for each crew of the FBN001 on 20th October 2011.
Here is what i got so far (only works for each members flown on a particular flight, NOT on their whole hours flown in a period of a lifetime) : -
SELECT e.Employee_Number, e.FirstName, e.LastName,
SUM( ( (s.ESTIMATED_ARRIVAL) - (s.ESTIMATED_DEPARTURE) )*24)AS
TOTAL_HOURS_FLOWN
FROM SCHEDULE s, CREW_ASSIGNMENT ca, EMPLOYEE e
WHERE
s.Flight_Number = ca.Flight_Number
AND
s.Serial_Number = ca.Serial_Number
[code]...
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Mar 12, 2011
Recently decided to try using Oracle. Previously when creating a procedure in SQL server I would have done the following.
Create PROCEDURE GetInfo AS
SELECT InfoID, Name, Description
FROM GetInfo;
How can I write this same procedure in Oracle?
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Sep 18, 2012
I am trying to create one pipelined function but facing some errors as below
SQL> CREATE OR REPLACE
2 FUNCTION FUN_PIPELINED_EMP
3 RETURN org_typ Pipelined
4 IS
5 CURSOR c1 IS SELECT EMPLOYEE_ID,DESIGNATION,DEPT_ID,PROJECT_ID,MANAGER_ID FROM
6 EMPLOYEE_DETAILS1;
7 org_rec c1%rowtype;
8 begin
[code]....
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