PL/SQL :: Trigger To Increment A Non-pk Field After Insert In Another Table
Feb 1, 2013
I have three tables.
One for projects, one for volunteers, and a bridge entity for the many to many relationship between the Project and Volunteer.
In Project table, I have a field called, Volunteers_currently_signed_up, which means the number of volunteers currently signed up to participate in a project.
When I add an entry to my bridge entity which is composed of Volunteer_ID and Project_ID, I want the Volunteers_currently_signed_up to increment by 1, where the Project_ID in the bridge entity corresponds to that in Project.
I have very very little PL/SQL, and this is my amateur attempt so far:
CREATE OR REPLACE trigger "BI_Volunteers_currently_signed_up"
BEFORE INSERT OR UPDATE ON Volunteers_in_project
for each row
WHERE Volunteers_in_project.Project_ID=Project.Project_ID;
begin
Project.Volunteers_currently_signed_up += 1;
end;
/
write a trigger that achieves the above
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Apr 18, 2011
Srl no - Srl no w.r. to the date of transaction.i.e will be incremented for every day and should again reset for the next day-Length -4 Purpose code -Purpose code of the transaction.
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May 27, 2013
I have already done auto increment by making sequence and trigger. but now the problem is when i am trying to retrieve data from that table it returns all data perfectly but the primary key that is my auto increment value shows blank.I am facing this problem with join query, there 4 table left joined in my query. But when I remove join from my query then it shows that value.
But i need that value in my join query.So, what is the problem and what can I do?And other thing is when I apply this query in Oracle SQL Developer, it works perfect.
My Query:
return $this->db->query("select * from TBL_EMPLOYEE_BASIC left join TBL_EMPLOYEE_DETAILS on TBL_EMPLOYEE_BASIC.EMPL_ID = TBL_EMPLOYEE_DETAILS.EMPL_ID left join TBL_EMPLOYEE_EDUCATION on TBL_EMPLOYEE_BASIC.EMPL_ID = TBL_EMPLOYEE_EDUCATION.EMPL_ID left join TBL_EMPLOYEE_EXPERIENCE on TBL_EMPLOYEE_BASIC.EMPL_ID = TBL_EMPLOYEE_EXPERIENCE.EMPL_ID where
[code]...
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Jun 16, 2010
Step1
CREATE TABLE test
(id NUMBER PRIMARY KEY,
name VARCHAR2(30));
Step2
CREATE SEQUENCE test_sequence
START WITH 1
INCREMENT BY 1;
Method1 Follow Step1 and Step2 and create a Trigger as below :
CREATE OR REPLACE TRIGGER test_trigger
BEFORE INSERT
ON test
REFERENCING NEW AS NEW
FOR EACH ROW
BEGIN
SELECT test_sequence.nextval INTO :NEW.ID FROM dual;
END;
/
Method 2 Follow Step1 and Step2 and directly have an insert statement as below:
INSERT INTO test (id, name) VALUES (test_sequence.nextval , 'Jon343');
Method 1, the Trigger is not getting created, however by following Method 2, I am able to generate auto-increment number.
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Nov 26, 2012
I am switching database from access to oracle 11g. I have create all the required tables, but I am stuck at one point. The previous person who created access database had auto increment with SG0101, SG0102,........ In oracle I know we can auto increment primary keys but only with the numbers not with characters.
So I have customerid which is a primary key and it automatically increments the number, but I have one more column with memberid where I am inserting all the ids that start with SG0101 bla bla.....
I already have 800 member ID's that start with SG, but that value doesnt automatically increment because I dont have any sequence or trigger to do that.
So how do I create a sequence and trigger that will automatically start value with SG and keeps auto incrementing?
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May 31, 2012
What I need to do is redirect an insert to another table when a field has some value. This is what I have:
CREATE TABLE TEST.TEAMS
(
NAME VARCHAR2(255 CHAR),
[Code]....
This is the result when I try to insert a record
INSERT INTO TEST.TEAMS ( NAME, LOCATION, PLACE ) VALUES (
'Belgrano', 'Cordoba', 1);
ORA-04091: table TEST.TEAMS is mutating, trigger/function may not see it
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Sep 19, 2011
I need to copy records from a working table to a history table. I have the following sql statement
insert into test.history
(equip_ID, state, manufacturer, install_year, capacity,
group_ID, Test_status)
select (equip_ID, state, manufacturer, install_year, capacity,
group_ID, Test_status
from test.info_AP
Table test.history has one more field in it called test_year. I need to fill this field when I do the insert. Can't use an after update trigger as the field is currently set to not allow nulls.
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Aug 17, 2010
writing a trigger body. My requirement is i need to insert a new record in a task table when ever a new record is inserted into employee table.Here in the trigger i need to select the name of the employee in the last inserted row in employee table and insert the name in task table.I tried to write the code as below
insert into task(name, date, type) values ((select name from employee where emp_id=(select max(emp_id) from employee), sysdate, 'document'));
When i am trying to insert record using trigger, it is taking last but one record from the employee table.
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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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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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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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Aug 2, 2012
I have table t1 and t1 , I want a procedure that will insert all records from t1 into table t2 and after successfull insert table t1 should be truncated .
If their is any problem in insert in to table t2 , the truncate command should not work .
Truncate command should work only after successfully insert command .
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Feb 17, 2011
I have table 'A' with column 'ID','NAME','IN_DATE','PHONE','EMAIL'
Now I have to create a trigger such that on every insert in the table 'A' the value of column 'IN_DATE' changes to sysdate.I m not good in PL/SQL
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Jun 6, 2010
In a trigger(on update of a table t1) I am trying to write, I am doing an insert on t2 accessing ':new' values of the update on t1.
But in my Insert statement, I am having get one of the column values from another table. How can I write my insert statement in such a way as to insert values contained in ':new' pseudo columns and a select from another table. Below is my insert statement in the trigger :
-------
IF (:old.GROUP_YELLOW <> :new.GROUP_YELLOW) THEN
INSERT INTO TEST.W_THRESHOLD_LOG
(THRESHOLD_LOG_WID, CHANGE_DATE, MEASURE_TYPE_WID, MEASURE_NAME, CUSTOMER_WID, CUSTOMER_NAME, USER_ID, CHANGED_ITEM, PREV_VALUE, NEW_VALUE)
VALUES(TEST.W_THRESHOLD_LOG_SEQ.NEXTVAL, SYSDATE, :new.MEASURE_TYPE_WID, 'Rolling Stabilty' , :new.CUSTOMER_WID, 'Customer1', 'User1', 'GROUP_YELLOW', :old.GROUP_YELLOW , :new.GROUP_YELLOW);
END IF;
-------
In the above code if the hardcoded value 'Customer1' need to be picked from another table,
i.e .
SELECT NAME FROM W_CUSTOMER_DIM WHERE CUSTOMER_WID = THRESHOLD.CUSTOMER_WID
how can I rewrite my query to the above value from the select into my insert statement..?
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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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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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Sep 1, 2012
I am trying to create a table that will increment my ID by one using the following commands:
/*Creates the log needed to increment ID*/
create sequence seq_log;
CREATE TABLE MESSAGE_LOG_TABLE
(
IDNUMBER(10)NOT NULLPRIMARY KEY,
[code]...
When I run the above my create sequence completes successfully but I get a ORA-00955: name is already used by an existing object error message on the create table. I have dropped all tables and sequences before running my command but I still get the same error message.
After it bombs out it appears that SQL+ want's more information for it begins to give me line numbers as if it is looking for a ";" to end the above command. I have to exit SQL+ and log back in to continue working.
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Jun 9, 2011
How to check for the increment of a space of the tablespace based on the particular table. (i.e.) Say a scenario, if am trying to load the data for a particular table, for first I loaded some 10000 records and then again loading 50000 records ,so based on the icrement of the reocrds the tablespace size also increases gradually . so for this scenario how to monitor the increment of the space.
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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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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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May 16, 2007
I have a form that contains some data and I would like to count them in a new "Item text" ... I don't want to use the Item Text's property where we set the data type to number, database to No, Query all record to Yes and etc... I want to use the SQL statement code to count the records (using trigger)... I named the Item Text as Count_Records .
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Mar 8, 2010
What is the trigger which should be used to check certain field value after posting the query.
Example:
I have executed the query and the records are fetched. There is one field I want to check if it is null then it should be enabled, else, keep it disabled.
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Oct 15, 2013
Oracle 11.2.0.3 on Linux.
I need to execute this insert as select:
INSERT INTO TAB1 (SQL_ID,SQL_FULLTEXT)
SELECT DISTINCT t.sql_id, t.sql_text FROM DBA_HIST_SQLTEXT;
But I get this error:
ORA-00932: inconsistent datatypes: expected - got clob
This is TAB1:
SQL_ID VARCHAR2(13)
SQL_FULLTEXT CLOB Y
SQL_CUSTOM_HASH VARCHAR2(60) Y
Should I user dbms_lob package? Is so, I do not understand how.
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Oct 4, 2011
if the date is 01-09-2011 then we want to show 'off' in place of total hours in Report field.
if date is other than 01-09-2011 then we need to show the total hours.
this we want to see on report in report builder at run time. how we can define in format trigger.
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Nov 12, 2006
I have a table known as Registration in which there are columns StudentID, ModuleId, year, semester
semester = 1 or 2
I want to write a trigger so that student can register on a maximum of 4 modules per semester
i.e.
select count(*), semester from Registration where studentid='241234' group by semester
I tried the following trigger but I am stuck
If I dont use "for each row", I am not allowed to use :new and ld and when I use "for each row", count would be for each row which would be 1 or 0
create or replace trigger checkmodulecount
before insert on Registration
DECLARE
noCourse NUMBER;
nCount NUMBER;
FAILED EXCEPTION;
[Code]....
WHEN FAILED THEN
raise_application_error(-20000,'Cannot reigster for more than four courses');
END;
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Nov 14, 2011
I have a table called Customer_Type with following fields
Customer_type ,Active_date, Inactive_date
regular,11/01/2011
daily,11/04/2011
monthly,11/05/2011/11/11/2011
Tbale 2:Customer
Customer_name,Customer_type,Customer_Inactive_date
John,regular,
James,monthly,
Jake,daily,
Jill,monthly
What i wnat is to update the Customer_inactive_date with the Incative_date field from Customer_type based on their Customer_type... So james and Jill would have their rows updated in this scneario ..How can i achive this in pl/Sql
I have teh code using merge function..I want something in traditional old fashion..
The sql statements are below
CREATE TABLE CUSTOMER_TYPE
(
type_code VARCHAR2(10),
[Code]....
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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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May 24, 2011
In
CREATE table ALPHA (
ID NUMBER,
FK_NR NUMBER,
INPUT NUMBER,
OUTPUT NUMBER,
MY_COUNT NUMBER,
ACTUAL_TOTAL NUMBER
);
I would like to record new inputs or outputs andthe column MY_COUNT should display the actual count of records for INPUT (actually MOD(INPUT, 10) ) regarding FK_NR and ACTUAL_TOTAL should display the actual sum for all input/output for FK_NR.
--ID normally comes from a sequence and BEFORE INSERT TRIGGER
EXAMPLE
INSERT INTO ALPHA(FK_NR, INPUT, OUTPUT)
VALUES (1 ,10,NULL);
INSERT INTO ALPHA(FK_NR, INPUT, OUTPUT)
VALUES (1 ,10, 50);
[code]...
Table ALPHA looks like:
1,1,10,NULL,1,10
2,1,10,50,2,-30
3,2,NULL,20,0,-20
4,2,20,40,2,-40
5,3,40,20,4,20
6,3,-10,NULL,3,10
How can this be achieved ?I started with a
CREATE OR REPLACE
TRIGGER "BI_ALPHA"
BEFORE INSERT ON ALPHA
FOR EACH ROW
BEGIN
SELECT ALPHA_SEQ.nextval INTO :NEW.ID FROM DUAL;
END;
and thought of a
CREATE OR REPLACE TRIGGER "AI_ALPHA"
AFTER INSERT ON "ALPHA"
FOR EACH ROW
DECLARE
l_maxidNUMBER;
l_fknr NUMBER;
[code]...
But by inserting a row, this results in ORA-04091
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May 2, 2013
I must to build triggers that insert other two rows when the user insert the first record, but the First record must to change Seq to 2 (was 1) then in trigger to insert other record with seq equal 1 and more other record with seq equal 800, I tried some ways , but return error
First insert the user from application
INSERT INTO ARCTB_ACAO_IMEDIATA ( CD_ARC, CD_TIPO_ACAO, CD_ACAO_IMEDIATA, DS_ACAO, CD_RESPONSAVEL, DT_ORIGINAL, DT_ABERTURA, NR_PRAZO,DT_PREVISTA, DS_HISTORICO ) VALUES (9732, 0,1, 'TESTE','ucrwilma', To_date('02/05/2013','DD/MM/YYYY'), To_date('02/05/2013','DD/MM/YYYY'), 1, To_date('02/05/2013','DD/MM/YYYY'), '');I create triggers
CREATE OR REPLACE TRIGGER ARCTR_ACAO_IMEDIATA_I
BEFORE INSERT
[Code]....
END ARCTR_ACAO_IMEDIATA_IUreturn me error
ORA-06519: active autonomous transaction detected and rolled back
ORA-06512: at "CLIBGF.ARCTR_ACAO_IMEDIATA_IU", line 221
ORA-04088: error during execution of trigger 'CLIBGF.ARCTR_ACAO_IMEDIATA_IU'
ORA-06512: at line 7using 9.2.08
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Jun 13, 2012
I'm trying to insert data in my_second_table using a trigger and a view when I insert the data in my_first_table but there's something wrong in the code.
CREATE OR REPLACE TRIGGER my_trigger
AFTER INSERT ON my_first_table
FOR EACH ROW
BEGIN
[Code]...
I'm suspecting that the problem is in the :new.cod_emp
P.S.: I'm using: Oracle Database 11g Release 11.2.0.1.0 - 64bit Production on Enterprise Linux Server release 5.5 (Carthage)
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