SQL & PL/SQL :: How To Implement Trigger After Update
Jan 13, 2011
SQL> CREATE OR REPLACE TRIGGER TRI_ABOVE_JOINTBOX
2 BEFORE UPDATE ON JOINT_BOX FOR EACH ROW
3 DECLARE
4 PRAGMA autonomous_transaction;
5 BEGIN
6 IF (:NEW.SCALE_X <> :OLD.SCALE_X) OR
7 (:NEW.SCALE_Y <> :OLD.SCALE_Y) THEN
[code]....
The above code is for the GIS project. When I am trying to implement the above trigger it is giving output in such a way that the joint box(which is point feature in the designed database) scale is fixed to 1 as written in the code,but it cannot be moved in the DGN(front end),this is because trigger is fired before update.
Actual intention is that the feature(joint box) need to move in the DGN then the trigger need to be fired so that then scale need to fixed to one even after changing.For that I implemented after update trigger in the above code,but then it is throwing error as
ORA-04084: cannot change NEW values for this trigger type. I guess this is because after update trigger cannot be implemented for bind variables old and new.
1.joint box can move in DGN(this can be acheived automatically if after implementing after update trigger).
2.after dragging in the DGN the scale to be fixed as 1.
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May 14, 2010
I have a base table (Table A) block with multiple records displayed. I need to track audits to this underlying table in the following way:
If user updates a field in the block I want the pre-changed record's audit fields to be set and I need to create a copy of the record with the changed values. Basically any changes will result in the record being logically deleted, and a copy record created with the newly changed values.
Tried to implement in the block's pre-update trigger which will call a package to directly update Table A then Insert into Table A, then requery the block. Is there a clean and efficient way to do this?
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Oct 10, 2011
I have to implement exception handling in the exception block of a trigger, Quote:exception
when ora_java.java_error then
message( 'Unable to call out to java, ' || ora_java.last_error );
ORA_JAVA.CLEAR_EXCEPTION;
when ORA_JAVA.EXCEPTION_THROWN then
ex := ORA_JAVA.LAST_EXCEPTION;
message( Exception_.toString(ex));
-- lv_exception := Exception_.getMessage(ex);
I get an error for the line: 'message( Exception_.toString(ex));'I have imported the java classes FException et IObject with their methods.
I have to create a Web Service Client, so I wonder if the paragraph Quote:when ORA_JAVA.EXCEPTION_THROWN then ex := ORA_ JAVA. LAST_ EXCEPTION; is mandatory.
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May 29, 2012
i want to create a trigger that will update a table when there is an insert or update.i can't across this error that i don't even know what it means "table %s.%s is mutating, trigger/function may not see it".
*Cause: A trigger (or a user defined plsql function that is referenced in this statement) attempted to look at (or modify) a table that was in the middle of being modified by the statement which fired it.
*Action: Rewrite the trigger (or function) so it does not read that table.
CREATE OR REPLACE TRIGGER set_date_end
BEFORE INSERT OR UPDATE OF issued ON shares_amount
FOR EACH ROW
DECLARE
BEGIN
INSERT INTO shares_amount(date_end) VALUES(SYSDATE);
END set_date_end;
/
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Jan 25, 2012
After many tests I can't make work and update of the same table inside the same table.
Trying to avoid Mutating Table Error now I have
ORA-00036: maximum number of recursive SQL levels (50) exceeded
Sample Data :
create table test_compound (USERID VARCHAR2(10),APP VARCHAR2(15),LAST_UPDATED_ON TIMESTAMP);
insert into test_compound values ('user1','1',systimestamp);
insert into test_compound values ('user2','2',systimestamp-4);
insert into test_compound values ('user3','3',systimestamp-6);
CREATE OR REPLACE TRIGGER trigger_test
FOR UPDATE ON test_compound
COMPOUND TRIGGER
TYPE t_tab IS TABLE OF VARCHAR2(50);
l_tab t_tab := t_tab();
[code].......
When I execute :
update test_compound
set last_updated_on=systimestamp
where userid='user1' and app='1';
The trigger should update the first row and all the data from test_compound table where userid='user1'. Maybe the problem is that updating the same table inside the trigger is firing in a recursive way the trigger.
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Apr 27, 2011
I have one table with one row with some coefficients. If I update a coefficient from my table I want to be updated all the rows from another table. I've made a trigger but in the second table I have a column for example TOTAL and I want that column to be multiplied with my new coefficient, and I want this for every row in the second table. How I can select that total column in the trigger for every single row and update it?
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Jun 4, 2012
How to make a trigger of changing value. For example I have a table of customer .
Customer_id, Cumtomer_name, cus_date and stats.
Values
102, ABC,02-06-2012 and Open
Now tell me how I can make trigger after two hours stats change OPEN TO CLOSE.
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May 7, 2010
I have to write a trigger where when the table is updated then one column named 'Status' should be updated as 'U' and if arow is inserted in the table then the column 'Status' needs to be inserted with value 'I'.
Create table test_trig
(
vempno number,
vempname varchar2(20),
status char
)
New to triggers....how to go with both insert and update conditions together.
Can we write a trigger which takes care of both insert and update. I have used Merge statement where I can write conditions based on insert/update done.
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Nov 24, 2011
CREATE or REPLACE TRIGGER Emp_Ins_Upd_Del_Trig
BEFORE delete or insert or update on EMP
FOR EACH ROW
BEGIN
if UPDATING then
[Code] .....
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Nov 24, 2010
I am ceating a trigger to...when I update or insert a record in table and if salary of that record is less than 1600 than it should be updated to 2000. My trigger is
CREATE or REPLACE TRIGGER myTrigger
BEFORE UPDATE OR INSERT ON newemp
FOR EACH ROW
BEGIN
[code]...
There are no errors with trigger while compiling, but when I update or insert a record, it does not update the table. It looks like the trigger is being ignored.
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Apr 2, 2012
I have 2 tables where the data is related.table ot_pack_list,ot_delv .ot_pack_list contains details of items information that are packed to be delivered sometimes what happens user may remove some items from this, and the summary column of dl_wt and dl_qty in ot_delv must get automatically changed whenever there is addition in ot_pack.
create table ot_pack_list (item varchar2(12),pack_qty number,pack_wt number,pack_no number)
insert into ot_pack_list values ('a',2,10,1);
insert into ot_pack_list values ('b',3,55,1);
create table ot_delv (d_no varchar2(12),d_qty number,d_Wt number,d_pack_no number)
[Code]...
--after updating the data in ot_delv should be like..
select * from ot_delv;
d_no d_qty d_wt d_pack_no
----- ----- ---- -------
1 5 75 1
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Aug 14, 2012
I am writing a trigger TR_EMP on a table EMP which has columns EMP_ID, EMP_NAME, ALT_EMP_ID.
Now I am updating ALT_EMP_ID for an EMP_ID(PK) which is unique.
If ALT_EMP_ID is null
then
:new.ALT_EMP_ID = l_alt_emp_id;
end if;
As this ALT_EMP_ID is unique, same ID shouldn't be inserted again here. When data being inserted with 2 different sessions for 2 different EMP_ID there is a possible chance of inserting same ALT_EMP_ID for both which results in Unique error. I need to handle this exception. DUP_VAL_ON_INDEX or OTHERS Execption not able to handle this.
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Jan 17, 2013
I need a trigger to fire whenever an update happens. Seems easy, but there are several problems there:
- I need it to fire in case both :OLD and :NEW are the same value. i.e. I've got "5" currently in the field, and I update and set the same field to "5" again.
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May 24, 2012
the following case is successfully done with mssql databases.
Case:
Table UserGroup
Columns id, name, handshake
When the handshake is set to 'd', this record should be deleted. I know it is bad behaviour by design.
What have I done so far:
- created an after update trigger (mutual error) Caused by trying a delete action in the update action, not possible.
- created a view in combination of instead of update trigger.
This causes also mutual error, or if ignored (PRAGMA AUTONOMOUS_TRANSACTION), an deadlock.
Code so far:
create or replace procedure Delete_UserGroup_sp(p_groupId in USER_GROUP.HMIUSERGROUPID%TYPE, p_handshake in USER_GROUP.HANDSHAKE%TYPE)
is
begin
if p_handshake = 'd' then
delete USER_GROUP WHERE HMIUSERGROUPID = p_groupId;
commit;
end if;
end;
create or replace view USERGROUP_V as select * from USER_GROUP
create or replace trigger USER_GROUP_T1
instead of update on USERGROUP_V
for each row
declare
PRAGMA AUTONOMOUS_TRANSACTION;
begin
Delete_UserGroup_sp(:new.HMIUSERGROUPID, :new.HANDSHAKE);
end;
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Mar 30, 2010
I am trying to create some PL/SQL that will create a trigger for UPDATES and INSERTS which will update a column on the same row to the system date.
So far I have:
DECLARE
tablename VARCHAR(30) := 'table';
triggername VARCHAR(30) := 'mytrigger_' || tablename;
[Code]....
I have declared the tablename and triggername outside the trigger creation as I need this to be parameterised for a list of tables.
The procedure IsCDCUser just checks it should be updating for this user.
The problem I get is the following error:
Bind Variable "NEW" is NOT DECLARED
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Jun 2, 2011
Select * from Table A where emp=1;
Emp AID
1 111
select * from Table B where emp=1 ;
----------
AID, emp, start_dt, End_dt
111 1 01-jan-2011 31-dec-2011
112 1 01-jan-2011 31-dec-2011
113 1 01-jan-2011 31-dec-2011
I have After insert or update trigger on Table B. This will update AID column on Table B.
after insert update on table B
update A
set AID=:new.AID where emp=:new.emp;
if i end date any record on table B i wanted to update max(AID) on Table A.
EX update table b
set end_dt= sysdate-1
where aid=111;
So I wrote the trigger on Table A as below
before insert or update on trigger A
declare
v_aid number;
v_strt_dt date;
v_end_dt date;
begin
select max(AID) from table B
where emp=:new.emp;
select v_end_dt from table B where aid=:new.Aid;
if v_end_dt<sysdate then
:new.aid:=v_AID;
end if;
But the problem here is its giving mutating error.Then i tried with autonomus transaction but it willreturn old value when it fiers.
So how can i achive both the task at a time.That means i have to endate Table A , Same time i have to update active max(AID) to table B.
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Apr 16, 2013
i have created a trigger on a table after update. i am using if condition if the condition is true i am passing a value and then inserting into audit table.
if(condtion)
L_change_type='value'
end if;
if(condtion)
L_change_type='value'
end if;
if(condtion)
L_change_type='value'
end if;
if(condtion)
L_change_type='value'
end if;
Then i am inserting
Insert into audit_table(change_type.....)
values(..L_change_type)...)
If i want to skip the insert statement for particular condition wt i have to do.
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Feb 1, 2011
I am calling an after insert Trigger on table1.
In the trigger I am calling a procedure that returns an error if there is any error returned from procedure. I have to update the table table1's column error_desc (for the same new inserted record for which the trigger was called) with the error received by OUT parameter of procedure called in trigger. I have to update the same record on whose insert this trigger was called.
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Nov 21, 2012
I have to write a "after update trigger". Here, i have to update the stock table by other inventory tables (by complex query).
I have written trigger below. how to make it correct?
create or replace trigger trg_stk_upd_pur
after update on O_STOCK_EFFECTS
REFERENCING NEW AS new OLD AS old
FOR EACH ROW
[Code]....
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Jul 21, 2011
I have table test1(id,name) and table test2(id,,name)
Now when I update name column of a row on test1 I want the same value to be updated for the same id in test2.
So I wrote this trigger but its not working
create trigger test_trigger after update on test1 for each row
begin
update test2 set name=new.name where test2.id=id
end
/
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Feb 6, 2009
I am trying to write a trigger that will do an insert/delete/update into a audit table when a change has occurred on the primary table. The change will be recorded in the audit table by a incemental sequence number and the updated data.
there will be an extra column in the audit table
how to get a simplified version of this trigger.
the primary table will look like so
Id_num varchar (20)
code Integer
desc varchar(20)
sequence_num Integer
audit table
Id_num varchar(20)
code Integer
desc varchar(20)
timestamp date
sequence_num Integer
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Jul 27, 2008
I'm trying to simulate a delete operation through using an update on a trigger my tables are
CREATE TABLE EMPLOYEE (
LNAME VARCHAR(15) NOT NULL,
SSN CHAR(9) NOT NULL,
salary FLOAT,
dno INT NOT NULL,
vst DATE,
vet DATE,
PRIMARY KEY (Ssn));
[code]....
What I want to do is whenever there is an update on vet( valid end time) in employee, delete the values from the employee table and insert the old values from employee into the emp_history table along with the new value for vet. Here's my trigger
CREATE TRIGGER trig4
AFTER UPDATE OF VET ON EMPLOYEE
FOR EACH ROW
BEGIN
INSERT INTO EMP_HIST VALUES( : old.LNAME, : old.SSN, : old.salary, : old.dno, : old.vst, :new.vet);
DELETE FROM EMPLOYEE WHERE(SSN = :NEW.ssn AND vet IS NOT NULL);
END trig4;
//ignore the space between : and o as it makes a smily
The problem is I get an error for a mutating change, what I'd like to know is if the above trigger is possible, and if so how to implement it without giving me an error. I mean it makes sense syntactically and logically(at least to me).
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Dec 25, 2010
i have two table:
QUOTE create table test1(
num number(4),
name varchar2(50));
create table test2(
num1 number(4),
name1 varchar2(50));
then i want to create a trigger before update on table test1 that i want to insert in table test2 the old values in table test1:
for example
QUOTE insert into test1(1,'cocol');
QUOTE update test1
set name='oracle' where num=1;
so i want the trigger to insert 1 and cocol into the table test2.
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May 30, 2008
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
[code]...
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Feb 19, 2011
SQL> CREATE OR REPLACE TRIGGER TRI_COMPL_FEATURES
2 AFTER INSERT OR UPDATE ON COMPLEMENTS FOR EACH ROW
3 DECLARE
4 v_fno NUMBER;
5 v_tab VARCHAR2(30);
6 v_unique_id VARCHAR2(40);
[code]....
Trigger created.When I am trying to insert into complements table it is throwing error as follows:
SQL> insert into complements values(19,NULL,'5',6,7,NULL,'W2023648',NULL,NULL);
insert into complements values(19,NULL,'5',6,7,NULL,'W2023648',NULL,NULL)
*
ERROR at line 1:
ORA-20010: ORA-04091: table TEEMNGWS.COMPLEMENTS is mutating, trigger/function
may not see it
ORA-06512: at "TEEMNGWS.TRI_COMPL_FEATURES", line 19
ORA-04088: error during execution of trigger 'TEEMNGWS.TRI_COMPL_FEATURES'
I can understand that I am trying to perform DML operation(i.e select) on table which trigger is fired.But how can I implement the same logic when AFTER INSERT OR UPDATE trigger is written.
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Mar 4, 2013
We would like to create functions to insert and update our tables and would like to make it not possible to update and insert the table directly outside of the function. Is there a way to do that in the trigger?
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Oct 27, 2011
i am trying to create a update trigger that allows any quantity reduction of 5 units and if the reduction is more than 5 units it blocks it and just reduces it by 5.here are two scenarios
SQL Update statement where the new Quantity value being smaller than 5 is allowed by the trigger.
-- old qty 20
update purchase_order
set quantity = 18
where po_no = 'PO11';
-- new qty 18
SQL Update statement where the new Quantity value being larger than 5 is only reduced by 5 by the trigger.
--old qty 25
update purchase_order
set quantity = 19
where po_no = 'PO15';
-- new qty 20
i just have the basic trigger code, but i think it is the math that i am not getting (i was never good at math)
create or replace trigger purchase_quantity_updt
before update of quantity on purchase_order
for each row
when (new.quantity < old.quantity )
begin
-- not sure what to put here
end;
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Feb 20, 2012
I have two tables as
Table LEAVE
Column Type Null Description
APP_NO Number(6,0) Not Null PK Leave Application Number
ECN Number(6,0) Not Null FK Employee Code Number
APP_Date Date Not Null Date of Application
From_Date Date Not Null Date from which the leave starts
TO_Date Date Not Null Date upto which the current application leave remains i.e. end of leave applied for date
NO_OF_Days Number(2,0) Not Null Difference between TO_Date and From_date
LEAVE_TYPE VARCHAR2(3) Not Null Can be one of SL, CL, LWP or LTA
Status VARCHAR2(25) Not Null Can be one of Saved, Rejected or Approved
Remark VARCHAR2(100) Nullable Reason to be put if status is rejected
[code]....
What I really want to do is that when a record is inserted in the LEAVES table (an application for leave is submitted by any employee and if it is approved) then I want to update the _USED values of the corresponding LEAVE_TYPE in the LEAVEENTITLE table which holds values of types of leaves entitled to employee.
For example if 3 rows are inserted in the LEAVES table as
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(1,1234,'2012-01-01','2012-01-05','2012- 01-01',5,'SL','APPROVED',null);
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(2,1235,'2012-01-01','2012-01-05','2012- 01-01',5,'CL','SAVED',null);
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(3,1236,'2012-01-01','2012-01-05','2012- 01-01',5,'LTA','REJECTED','Clash with the annual meet, revise dates');
Then the value of SL_USED in the LEAVEENTITLE table of record corresponding to the ECN = 1234 should be updated with +5 and naturally the SL_ UNUSED value of the record should be updated as SL_ENTITLED - SL_USED. For the APP_NO 2 and 3 none of the values in LEAVEENTITLE should be updated as the STATUS is not 'APPROVED'
I tried with the following trigger, but is compiling with a warning (not showing what the warning is)
CREATE OR REPLACE TRIGGER leaveentitle
AFTER INSERT ON LEAVES
FOR EACH ROW
BEGIN
UPDATE LEAVEENTITLE LVE
SET LVE.SL_USED = SL_USED+(CASE
WHEN :NEW.LEAVE_TYPE = 'SL'&& NEW.STATUS='APPROVED'
THEN :NEW.NO_OF_DAYS
SL_UNUSED=SL_ENTITLED - SL_USED
ELSE 0
END),
[code]....
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Jul 1, 2011
In my DB,We have a table rqst_list
Create table rqst_list(id Number, --(PK)
pkg_name varchar2(100),
status varchar2(100))
When a record is inserted into this table(rqst_list), a trigger is fired which calls the package which is there in pkg_name.The function does some function.If there are no exceptions while executing the package, then SUCCESS needs to be updated in the table for the id for which the trigger got fired.I have used AFTER INSERT ROW level trigger.
But,the final UPDATE (UPDATE the rqst_list table to SUCCES/FAILURE)to the base table inside the package is not happening.
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Jul 4, 2013
Table A basically has 4 rows of interest, an outside event changes/inserts let's say row 1.
Row 2 and 3 have to be changed in a trigger depending on the new value of 1.(or not if the value stays the same)
Row 4 is the reference for the update and will not be changed.
My first simple AFTER INSERT or UPDATE trigger obviously failed because of the mutating table error.
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