Create a trigger instead of update several tables in a view

Similar Questions

• Help me in creating a trigger Insert and Update Options

  Hello
  
  Please help me in creating a trigger.
  
  My requirement is that, after insert or update on a Table, I want to launch an event.
  
  I have started this way, but does not know how to fully implement it.
  
  I have a dept table
  
  
  CREATE TRIGGER DepartmentTrigger
  INSERT AFTER on Dept
  BEGIN
  INSERT INTO mytable VALUES("123","Kiran");
  END DepartmentTrigger;
  
  
  Please tell me how I can put the update option also.
  
  Thanks in advance.

  Please tell me how I can put the update option also.

  Add "or update". ;-)

  Here are a few suggestions, but you definitely need to refer to the manual page that suggested the previous poster.

  CREATE OR REPLACE the TRIGGER DepartmentTrigger
  AFTER INSERT or Update ON Dept
  BEGIN
  INSERT INTO mytable VALUES(:new.) Dept 'DEPT ADDED OR CHANGED');
  END DepartmentTrigger;

  The "or replace" means that you can replace the shutter button as you develop without having to type in a drop statement each time. Just change and reissue your script over and over again until you get it right.

  The addition of "update or" or "Or remove" fact the trigger too much fire for these events. Note, you peut want separate triggers in different scripts and with different names for each event. You must decide whether your design is really the same thing either an insert or an update.

  : new. Dept, this is how you should refer to the vale has changed the Dept column (: old.) Dept is the previous value). I changed the double quotes in the string in the clause VALUES of apostrophes.

  Andy

• create the user who can update another table schema

  Hello

  We have a system of prod in which we need to update the schema of the application running the declaration different update and create/run function, procedure, package bodies. It is very easy if you use the schema owner. But I need to run the activities of another user due to some restrictions. How can I do?

  Can u suggested to update any table privilege... but this would give all access table dictionary also.

  Is there any privilege that would allow any other user update another schema table without using the schema name before the name of the table?

  PLSS suggest

  John,

  Can we use public synonym for that?  I don't know if the risk of security for her:

  SQL > connect h/h

  Connected.

  SQL > select * from scott.emp;

  Select * from scott.emp

  *

  ERROR on line 1:

  ORA-00942: table or view does not exist

  SQL > connect scott/tiger

  Connected.

  SQL > create public synonym scotemp for scott.emp;

  The synonym is created.

  SQL > connect HR/hr;

  Connected.

  SQL > select * from scotemp;

  Select * from scotemp

  *

  ERROR on line 1:

  ORA-00942: table or view does not exist

  SQL > connect scott/tiger

  Connected.

  SQL > grant select on emp to HR;

  Grant succeeded.

  SQL > connect h/h

  Connected.

  SQL > select * from scotemp;

  ..

  ..

  14 selected lines.

  SQL > show user;

  The USER is 'hr '.

  SQL > update of ename set scotemp = 'SMITHX"where empno = 7369;

  setting a day of scotemp set ename = 'SMITHX"where empno = 7369

  *

  ERROR on line 1:

  ORA-01031: insufficient privileges

  SQL > connect scott/tiger

  Connected.

  SQL > grant update on HR emp;

  Grant succeeded.

  SQL > connect h/h

  Connected.

  SQL > update of ename set scotemp = 'SMITHX"where empno = 7369;

  1 line update.

  SQL > rollback;

  Complete restoration.

  SQL >

  Concerning

  Girish Sharma

• Instead of Update trigger error

  Hi all
  I tried to solve this problem of course 4-5 days... I'm unable to solve... Can someone please...
  
  I hhave a requirement I need to update 4 tables from a single form... I created a view that will get the required fields as well as primary keys for all these tables of 4.
  
  Then I created a trigger Instead of Update as below
  
  CREATE OR REPLACE TRIGGER "HOMEPAGEVIEW_UPDATE".
  Instead of UPDATE on cts_homepageview
  BEGIN
  DECLARE
  vID NUMBER;
  UPDATE cts_hardware_info
  SET BATCH =: NEW. BATCH,
  COMPUTERNAME =: NEW.COMPUTER_NAME,
  OPERATINGSYSTEM_ID =: NEW. OPERATINGSYSTEM_ID
  where computer_id =: NEW.COMPUTER_ID;
  
  UPDATE cts_server_administrator
  SET PRIMARY_ADMIN_ID =: NEW. PRIMADMIN_ID,
  SECONDARY_ADMIN_ID =: NEW. SECONDADMIN_ID
  WHERE ID =: NEW.ID;
  
  UPDATE cts_location_info
  SET BUILDING_ROOM_RACK =: NEW. BUILDING_ROOM_RACK
  WHERE LOCATION_ID =: NEW. LOCATION_ID;
  
  UPDATE cts_maintenace_info
  SET MAINTENANCE_WINDOW =: NEW. MAINTENANCE_WINDOW
  WHERE MAINTENANCE_ID =: NEW. MAINTENANCE_ID;
  END;
  
  
  When I try to update a record, am gettting the following error
  
  ORA-20505: DML error: p_rowid = 488, p_alt_rowid = COMPUTER_ID, p_rowid2 =, p_alt_rowid2 is. ORA-02014: cannot select the UPDATES view DISTINCT, GROUP BY, etc.
  Error failed to process row in the CTS_HOMEPAGEVIEW table.
  Ok
  
  
  I've already posted this question on the forum, but force the answers so try my luck again... Can someone please... I searched the forum for similar requests ths... Found a post the solution bt is not given...
  
  
  Thank you
  Yvette
  
  Published by: user0012 on April 29, 2009 09:54

  Yvette:

  Most likely you typoed a name table or a column in the code in the trigger name. Check that the table names and column names referenced in the trigger are valid. Take a look at the line with

  OPERATING_SYS =: NEW. OPERATING_SYS

  Is this a valid column?

  CITY

• Unable to create cache with several tables group

  Hello
  
  I need to create a group of cache with several tables, which are referential to the other.
  
  There are 2 related tables and table 1 child...
  While trying this thing, it gives me an error:
  
  8222: multiple parent tables found
  
  It is not possible to use several tables of root in a single cache group? Is there another way to use it?
  
  Script, I used is:
  
  create a cache group asynchronous writethrough TEST. CG1
  of the TEST. ROOT1)
  KEY PRIMARY ID VARCHAR2 (8 BYTES),
  NAME VARCHAR2 (50 BYTE),
  DESCRIPTION VARCHAR2 (255 BYTE),
  POLICYTYPEID VARCHAR2 (7-BYTE)),
  
  TEST. ROOT2)
  PARAMTYPEID VARCHAR2 (5 BYTES) PRIMARY KEY,
  PARAMETERUSAGE VARCHAR2 (1 BYTE),
  NAME VARCHAR2 (25 BYTE),
  DESCRIPTION VARCHAR2 (255 BYTE)),
  
  TEST. CHILD1)
  PARAMDETAILID NUMBER (20) PRIMARY KEY,.
  ID VARCHAR2 (8 BYTE),
  PARAMETERUSAGE VARCHAR2 (1 BYTE),
  DISPLAYVALUE VARCHAR2 (255 BYTE),
  OPERATORID VARCHAR2 (5 BYTE),
  VENDORID NUMBER (20).
  FOREIGN KEY REFERENCES TEST. ROOT1 (ID),
  TEST KEY (PARAMETERUSAGE) REFERENCES STRANGERS. ROOT2 (PARAMETERUSAGE));

  You can't have multiple root within a group of cache tables. The requirements for tables in the group a cache are very strict; There must be only one top-level (root table) table and there may possibly be several children tables. Tables of the child should be linked through foreign keys to the root table or a child table above in the hierarchy.

  The solution for your case is among the tables of root and the other root table in a separate cache group and the child table in a cache group. If you do this, you must take care of a few things:

  1. you cannot define foreign keys between the tables of groups of different cache in TimesTen (keys may exist in Oracle) so the application must enforce referential integrity itself for these cases.

  2. If you load data in a cache group (using LOAD the GROUP CACHE or "load we demand") and Timesten will not automatically load the corresponding data in the other group of cache (since he doesn't know the relationship). The application must load the data into the other group of cache explicitly.

  There is no problem with transactional consistency when changes are pushed to Oracle. TimesTen maintains and reinforces the coherence transactional regardless of how the tables are arranged in groups cache correctly.

  Chris

• Sequence creates random numbers instead of sequence numbers

  Hello
  
  I created a sequence on a column in the table and then I created a trigger before insert on this table. Here's the script:
  
  CREATE SEQUENCES SEQ_COL1
  START WITH 1
  MAXVALUE 9999999999999999999999999999
  MINVALUE 1
  NOCYCLE
  NOCACHE
  ALL;
  
  CREATE OR REPLACE TRIGGER trig_table1
  before inserting
  Table 1 for each line
  Start
  
  If: new.col1 is null then
  Select seq_col1.nextval in: double new.col1;
  end if;
  end;
  
  The problem I have is, the number generated for the col1 is random as after 1, it goes to 230 then to 340 etc... instead of being sequential.
  
  Please let me know if I'm missing something.

  Hello

  Use the ORDER parameter in your create sequence - statement.

  Heike cordially

• Create the trigger after insert

  Hello
  
  I would like to ask how to create a trigger after insert on a table. Basically, what I wanted to do are when an insert to table1 it will insert the records to table2. But the problem is that folders that will be inserted in the new tables are entries/fields, who lived in NEW York City (on table of ld)
  
  after insertion, I wanted to add another field in table2 as status
  
  
  create table table1)
  
  Name varchar2 (55),
  City varchar2 (55)
  
  );
  
  create (table2)
  
  Name varchar2 (55)
  status int (1)
  )
  
  Hope you could help me.
  
  Thank you
  
  Best regards

  antok1015 wrote:
  Hello

  I would like to ask how to create a trigger after insert on a table. Basically, what I wanted to do are when an insert to table1 it will insert the records to table2.

  It's easy...

  SQL> create table table1(
    2    Name varchar2(55),
    3    City varchar2(55)
    4  );
  
  Table created.
  
  SQL>
  SQL> create table table2 (
    2    Name varchar2(55),
    3    status number(1)
    4  );
  
  Table created.
  
  SQL>
  SQL> create or replace trigger trg_tbl1 after insert on table1
    2  for each row
    3  begin
    4    insert into table2 values (:new.name, 1);
    5  end;
    6  /
  
  Trigger created.
  
  SQL> insert into table1 values ('Fred','Bob');
  
  1 row created.
  
  SQL> select * from table2;
  
  NAME                                                        STATUS
  ------------------------------------------------------- ----------
  Fred                                                             1
  
  SQL>
  

  But the problem is that folders that will be inserted in the new tables are entries/fields, who lived in NEW York City (on table of ld)

  after insertion, I wanted to add another field in table2 as status

  This is not sensible. Please explain what you mean.

• Update target tables...

  Hello
  
  I'm actually in a difficult situation. I need to update a table with a view. The table has 3 columns (* col1, col2, col3 *) initialized as NULLs in all records, noting that the other columns are given inside... So what I'm basically doing is this:
  
  I maps the columns to display in the table and click on the table to display the table operator properties, then set the type of loading for UPDATE. Then under a conditional loading in the filter of the target for the update , I have inserted the following condition:
  
  (INOUTGRP1.*col4 * IS NOT NULL) which shows a successful validation.
  
  Taking into account the constraints Match is chosen to be NO_CONSTRAINTS...
  
  After that I click on col1, col2 and col3 respectively to put the Match column when new line Yes...
  
  Unfortunately, these warnings will appear saying the following:
  
  + VLD-2753: all mapped attributes are used in corresponding to the criteria of 15_REC.
  
  It will be a meaningless update action if all attributes are mapped are used for matching. The update statement selects rows that meet the condition of correspondence and be updated with the same values. Specify at least one mapped attribute of my_table to use for updating by setting use update for Matching No.: ( COL1 COL2 COL3). +
  
  
  + VLD-2761: impossible to generate the Merge statement.
  
  MERGE statement cannot be generated because the COL4 column is used for correspondence and updating. A column can be updated in a merge statement. +
  
  
  
  So if anyone has any kind of idea help as soon as possible... Since it is in fact urgent...
  
  Thanks a lot already recognizing in reading.
  Hossam

  "Merge statement cannot be generated because the COL4 column is used for correspondence and updating. A column cannot be updated in a merge statement.

  You have to column 4, set the Match column when new line no. and update column Yes?

  Concerning
  Nico

• trigger several tables, removal of the update

  How to translate this to a trigger?

  if  
     host_decomm is set to 'y' on servers 
  then 
     delete from software_lookup 
           where software_lookup.serverid_lookup = server."ID"

  Oracle: 10 x e
  
  table * "servers" * a columns
  'ID', HOST_DECOMM
  
  table * "software_lookup" * a columns
  SOFTWARELOOKUP_ID, SERVERID_LOOKUP

  Hello

  This seems good.

  Two small points: I'd
  (1) paragraph between BEGIN and END
  (2) say SHOW ERROR in script

  CREATE OR REPLACE TRIGGER  "SERVERS_DECOMM_T1"
  AFTER
  update on "SERVERS"
  for each row
  begin
          IF  :NEW.host_decomm = 'y'
          then
             delete from software_lookup
                   where serverid_lookup = :NEW.id;
          END IF;
  end;
  /
  SHOW ERROR
  

• Trigger on a several tables

  IHAVE a requirement like this.but explained in the form of two table emp and Dept.
  
  I have a table emp table(empno,ename,deptno) and dept (deptno, dname)
  I have a third emp_details (empno, ename, deptno, dname) of table
  
  I have a procedure that returns the empdetails
  I have a query in th eabove procedure, select * from emp_details; that returns all the details.
  
  I want to write a trigger of such that,.
  If I insert or update a row in the emp and dept table and then he should get inserted/updated in the table of emp_details also.
  I am able to write triggers ona single table. I can't get the rows inserted or updated when it comes to multiple tables.
  
  Data:
  
  create table emp
  (key primary empno number,)
  Ename varchar2 (20).
  DEPTNO number
  )
  
  create table dept
  (key primary number depno,)
  DNAME varchar2 (20)
  )
  
  Insert into dept values(10,'hyderabad');
  Insert into dept values(20,'bangalore');
  
  Insert into emp values(1,'A',10);
  Insert into emp values(2,'B',20);
  
  
  CREATE TABLE EMP_DETAILS
  AS
  SELECT E.ENAME, E.EMPNO, E.DEPTNO, D.DNAME
  Of
  EMP E, DEPT. D
  WHERE E.DEPTNO = D.DEPTNO;
  
  
  CREATE OR REPLACE PROCEDURE PROC_EMP_DETAILS (P_EMPNO EMP. EMPNO % TYPE OUT, P_ENAME EMP. ENAME OUT TYPE, P_DEPTNO EMP %. DEPTNO % TYPE OUT, P_DNAME MIN. DNAME % OUT TYPE)
  AS
  / * EXAMPLE OF CODE * /.
  BEGIN
  SELECT * FROM EMP_DETAILS;
  END;
  /
  
  I tried like this
  
  CREATE OR REPLACE TRIGGER TRIG_EMP_DETAILS
  AFTER INSERT OR UPDATE ON EMP
  FOR EACH LINE
  REFERENCING OLD AS OLD AGAIN AS NEW
  BEGIN
  INSERT INTO EMP_DETAILS VALUES(:NEW.) EMPNO,: NEW. ENAME,: NEW. DEPTNO,?)
  
  ???? -As a column, we get dept table how to represent that?
  
  Could you please guide me in this regard?
  
  
  
  Thanks in advance
  KVB

  Trigger on a several tables

  I think that you don't need triggers on several tables: one is enough:

  CREATE OR REPLACE TRIGGER trig_emp_details
    AFTER INSERT OR UPDATE
    ON emp
    FOR EACH ROW
  BEGIN
    INSERT INTO emp_details
      SELECT :new.empno, :new.ename, :new.deptno, dname
        FROM dept
       WHERE deptno = :new.deptno;
  END;
  

• DB trigger error - update even table in the script of the trigger

  Hi all
  I have a table tab1, whenever any update is done on this table on column col1 and col2 also needs to get the update. (These are related to user forms can be updated only col1 form frontend)
  So I created a trigger as follows.
  ----------------
  CREATE OR REPLACE TRIGGER tri1
  AFTER UPDATE
  ON tab1
  FOR EACH LINE
  WHERE (NEW.col1 = 'YES')
  DECLARE
  PRAGMA AUTONOMOUS_TRANSACTION;
  BEGIN
  Tab1 SET col2 = 1 UPDATE
  WHERE transaction_id =: OLD.transaction_id;
  COMMIT;
  END;
  --------
  When there is no update on this table, I get following error. Please let me know if I'm missing something.
  ORA-00060: Deadlock detected while you wait resource
  ORA-06512: at "user1.tab1", line 5
  ORA-04088: error during execution of trigger 'user1.tab1 '.
  Please let me know if I'm not clear. Thank you
  
  Published by: DharV on August 23, 2011 05:17

  Your transaction_id is unique?

  If this is the case, then you could perhaps use AFTER UPDATE BEFORE UPDATE:

  CREATE OR REPLACE TRIGGER tri1
  BEFORE UPDATE
  ON tab1
  FOR EACH ROW
  WHEN (NEW.col1 = 'YES')
  BEGIN
     :NEW.col2 := 1;
  END;
  

  If your transaction_id is not unique - if you really want to update more than one line in tab1 - your update cannot update the same line that the trigger has responded, even with the use of an autonomous transaction. Then you could combine the BEFORE UPDATE trigger above with your own AFTER UPDATE, but then add ROWID! =: OLD. ROWID to where clause, but it would be a bad idea because some of your lines will be updated in a single transaction and others in another transaction.

  In general the autonomous transaction is not a great way to solve the problem of changing table within a trigger. I hope that you have a unique transaction_id and can do BEFORE the UPDATE - if it is then a better way is to save the update id in an overall picture in FOR EACH ROW triggers, and only then AFTER an UPDATE fire is NOT "for each line" update the list of saved IDs

• create the view of several tables of days

  Hello
  I'll have existing oracle db with the daily stat data, tables strangely named data_mon, data_tue, data_wed... For my batch that I intend to use the view with multiple day data, let say for the last 5 days.
  Do not know how better to implement my sql with these suffixes _mon statement to make it more or less dynamic.
  I create also ever seen from several tables, then, probably, that I can do something that will add daily updated data and remove data from 5 days?
  
  You will appreciate comments on the details and the whole concept. I have prev sql server experience.
  
  Thank you
  T

  user12943718 wrote:
  Hello
  I'll have existing oracle db with the daily stat data, tables strangely named data_mon, data_tue, data_wed... For my batch that I intend to use the view with multiple day data, let say for the last 5 days.
  Do not know how better to implement my sql with these suffixes _mon statement to make it more or less dynamic.
  I create also ever seen from several tables, then, probably, that I can do something that will add daily updated data and remove data from 5 days?

  You will appreciate comments on the details and the whole concept. I have prev sql server experience.

  Thank you
  T

  Change the data model if you have 1 table for a day.

  You have just a DATA table and a column to indicate the day of the application.

  Then you don't need a view, do not need anything dynamic, do not need to break your head against a wall for a simple query... etc.

• Creating a combined chronology based on several chronologies in several tables

  Hello
  I need to extract a timeline for a customer based on valid_from and valid_to dates in several tables.
  For example: I have a table named customers with an id, a valid_from a valid_to date and a table named contracts with contrat_name and customer_id and valid_from valid_to:
  
  CUSTOMERS:
  ID | VALID_FROM | VALID_TO
  1. 01.03.2010 | 01.01.4000
  
  CONTRACTS:
  CONTRACT_NAME | CUSTOMER_ID | VALID_FROM | VALID_TO
  Contracted | 1. 01.03.2010 | 01.10.2010
  ContractB | 1. 01.10.2010 | 01.01.4000
  
  The following statement would now give me the correct chronology:
  Select customer cus.id, con.contract_name, greatest(cus.valid_from,con.valid_from) least(cus.valid_to,con.valid_to) valid_to valid_from
  customers cus
  stupid contracts on cus.id = con.customer_id inner join;
  
  CUSTOMER | CONTRACT | VALID_FROM | VALID_TO
  1. Contracted | 01.03.2010 | 01.10.2010
  1. ContractB | 01.10.2010 | 01.01.4000
  
  It works, but I get a problem whenever I have a point from the time there is no contract for a client, but I would always like to have these periods in my calendar:
  
  Suppose the following data and the same select statement:
  
  CUSTOMERS:
  ID | VALID_FROM | VALID_TO
  1. 01.03.2010 | 01.01.4000
  
  CONTRACTS:
  CONTRACT_NAME | CUSTOMER_ID | VALID_FROM | VALID_TO
  Contracted | 1. 01.05.2010 | 01.10.2010
  ContractB | 1. 01.12.2010 | 01.03.2011
  
  What I would now get would be:
  CUSTOMER | CONTRACT | VALID_FROM | VALID_TO
  1. Contracted | 01.05.2010 | 01.10.2010
  1. ContractB | 01.12.2010 | 01.03.2011
  
  But what I get is the following:
  CUSTOMER | CONTRACT | VALID_FROM | VALID_TO
  1. null | 01.03.2010 | 01.05.2010
  1. Contracted | 01.05.2010 | 01.10.2010
  1. null | 01.10.2010 | 01.12.2010
  1. ContractB | 01.12.2010 | 01.03.2011
  1. null | 01.03.2011 | 01.01.4000
  
  What I won't is generate a result with contract = null any time, there is no contract because I actually want to join the chronology of several different tables into one and it would be very complicated to assume things based on what data can or can not be found in a specific table.
  
  Thanks for any help or ideas,
  Kind regards
  Thomas

  Hi, Thomas,.

  Whenever you have a problem, after the sample data in a form that people can use to recreate the problem and test their ideas. CREATE TABLE and INSERT statements are great.
  For example:

  CREATE TABLE     customers
  (     customer_id     NUMBER (6)     PRIMARY KEY
  ,     valid_from     DATE          NOT NULL
  ,     valid_to     DATE          NOT NULL
  );
  
  INSERT INTO customers (customer_id, valid_from, valid_to) VALUES (1, DATE '2010-03-01', DATE '4000-01-01');
  INSERT INTO customers (customer_id, valid_from, valid_to) VALUES (2, DATE '2010-03-01', DATE '4000-01-01');
  
  CREATE TABLE     contracts
  (     contract_name     VARCHAR2 (15)     NOT NULL
  ,     customer_id     NUMBER (6)
  ,     valid_from     DATE          NOT NULL
  ,     valid_to     DATE          NOT NULL
  );
  
  INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
       VALUES            ('Contract 1a', 1,           DATE '2010-03-01', DATE '2010-10-01');
  INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
       VALUES            ('Contract 1b', 1,           DATE '2010-10-01', DATE '4000-01-01');
  
  INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
       VALUES            ('Contract 2a', 2,           DATE '2010-05-01', DATE '2010-10-01');
  INSERT INTO contracts (contract_name, customer_id, valid_from,        valid_to)
       VALUES            ('Contract 2b', 2,           DATE '2010-12-01', DATE '2011-03-01');
  

  If a customer contracts of n, then you might need as much as 2n + lines 1 output for this client:
  (a) 1 row showing the period, not from the date of customers both valid_from 1st contract begins
  (b) n lines indicating the periods under contracts
  (c) n lines indicating the period right after each contract, until the following starts (or valid_to of the client, if there is no next contract)
  However, you will have lines for periods not contacted ((a) or (c)) if their mandate is 0 days.

  This sounds like a job for the UNION. Make a UNION 3 lanes in a subquery to generate (a), (b), and (c), and then put a WHERE clause on the combined, results to filter the lines not length 0.
  In the query subsidiary UNION, (a) can be done with a query GROUP BY, and (c) can be done using the analytical function of LEAD.

  WITH     union_data     AS
  (
       SELECT       ua.customer_id
       ,       NULL               AS contract_name
       ,       MIN (ua.valid_from)     AS valid_from
       ,       MIN (oa.valid_from)     AS valid_to
       FROM       customers     ua
       JOIN       contracts     oa     ON     ua.customer_id     = oa.customer_id
       GROUP BY  ua.customer_id
       --
      UNION ALL
       --
       SELECT       customer_id
       ,       contract_name
       ,       valid_from
       ,       valid_to
       FROM       contracts
       --
      UNION ALL
       --
       SELECT       uc.customer_id
       ,       NULL               AS contract_name
       ,       oc.valid_to          AS valid_from
       ,       LEAD ( oc.valid_from
                   , 1
                   , uc.valid_to
                   ) OVER ( PARTITION BY  uc.customer_id
                      ORDER BY      oc.valid_from
                       )          AS valid_to
       FROM       customers     uc
       JOIN       contracts     oc     ON     uc.customer_id     = oc.customer_id
  )
  SELECT       *
  FROM       union_data
  WHERE       contract_name     IS NOT NULL
  OR       valid_from     < valid_to
  ORDER BY  customer_id
  ,       valid_from
  ;
  

  Output:

  CUSTOMER_ID CONTRACT_NAME   VALID_FROM VALID_TO
  ----------- --------------- ---------- ----------
            1 Contract 1a     01.03.2010 01.10.2010
            1 Contract 1b     01.10.2010 01.01.4000
  
            2                 01.03.2010 01.05.2010
            2 Contract 2a     01.05.2010 01.10.2010
            2                 01.10.2010 01.12.2010
            2 Contract 2b     01.12.2010 01.03.2011
            2                 01.03.2011 01.01.4000
  

  Published by: Frank Kulash, April 20, 2011 06:51
  Examples added

• Need to create a trigger that generates multiple rows in another table

  {size: 12} Hello
  
  I use Oracle9i (9.2.0.4.0)
  
  My problem is:
  I need to create a trigger that create different in the other table lines when someone will introduce a new line in the first table.
  
  For this, I use the table 4:
  
  1. first one where you want the trigger.
  2. a second just to take information.
  3. a third to make a trip meter.
  4. the fourth is the table where I want to create new lines. {size}
  
  Here is a summary of these 4 tables:
  
  {color: blue} Table 1
  STOJOU
  Number ¿Nulo? Tipo
  STOFCY_0 NOT NULL VARCHAR2 (9)
  ITMREF_0 NOT NULL VARCHAR2 (60)
  LOT_0 NOT NULL VARCHAR2 (45)
  VCRTYP_0 NOT NULL NUMBER (3)
  VCRNUM_0 NOT NULL VARCHAR2 (45)
  VCRLIN_0 NOT NULL NUMBER (10)
  QTYSTU_0 NOT NULL NUMBER
  NUMVCR_0 NOT NULL VARCHAR2 (45) {color}
  
  {color: blue} Table 2
  ITMMASTER
  Number ¿Nulo? Tipo
  ITMREF_0 NOT NULL VARCHAR2 (60)
  ZCOEFI_0 NOT NULL NUMBER {color}
  
  {color: blue} Table 3
  ZCTUART;
  Number ¿Nulo? Tipo
  CTUART_0 NOT NULL NUMBER (10)
  CTUDATE_0 NON NULL DATE {color}
  
  {color: blue} Table 4
  ZUART
  Number ¿Nulo? Tipo
  ZUARTDM_0 NOT NULL VARCHAR2 (102)
  STOFCY_0 NOT NULL VARCHAR2 (9)
  STOCOU_0 NOT NULL NUMBER
  ITMREF_0 NOT NULL VARCHAR2 (60)
  LOT_0 NOT NULL VARCHAR2 (45)
  CREDAT_0 NOT NULL DATE
  QTYSTU_0 NOT NULL NUMBER
  STA_0 NOT NULL VARCHAR2 (3)
  VCRLIN_0 NOT NULL NUMBER (10)
  VCRNUM_0 NOT NULL VARCHAR2 (45)
  VCRTYP_0 NOT NULL NUMBER (3) {color}
  
  I do this trigger:
  

  CREATE OR REPLACE TRIGGER CREA_REGISTROS_TRAZA
  AFTER INSERT ON STOJOU
  FOR EACH ROW
  DECLARE
     n INTEGER;
     ct NUMBER;
     fecha_actual VARCHAR2;
     fecha_old VARCHAR2;
     codigo_dm VARCHAR2;
  BEGIN
     fecha_actual := TO_CHAR(SYSDATE, 'DD/MM/YYYY');
     -- SELECT TO_CHAR(sysdate, 'DD/MM/YYYY') INTO fecha_actual FROM DUAL;
     SELECT TRUNC((STOJOU.QTYSTU_0/ITMMASTER.ZCOEFI_0),0) INTO n FROM STOJOU INNER JOIN ITMMASTER ON STOJOU.ITMREF = ITMMASTER.ITMREF;
        FOR i IN 1 .. n
     LOOP
        SELECT CTUART_0,TO_CHAR(CTUDAT_0, 'DD/MM/YYYY') INTO ct,fecha_old FROM ZCTUART;
        IF fecha_old <> fecha_actual THEN
          ct := 0;
        END IF;
        ct := ct + 1;
        INSERT INTO ZCTUART
          (CTUART_0,CTUDAT_0)
        VALUES
          (ct,SYSDATE);
        codigo_dm := SUBSTR('000000000000000000000',1,20 - LENGHT(NEW.ITMREF_0)) || NEW.ITMREF_0 || SUBSTR('0000000000',1,10 - LENGHT(NEW.LOT)) || NEW.LOT || SUBSTR('0000',1,4 - LENGHT(ct)) || ct;
        INSERT INTO ZUART
          (ZUARTDM_0,ITMREF_0,CREDAT_0,STA_0,QTYSTU_0,LOT_0,STOFCY_0,VCRLIN_0,VCRNUM_0,VCRTYP_0)
        VALUES
          (codigo_dm,NEW.ITMREF_0,SYSDATE,0,NEW.QTYSTU_0,NEW.LOT_0,NEW.STOFCY_0,NEW.VCRLIN_0,NEW.VCRNUM_0,NEW.VCRTYP_0);
     END LOOP;
  END CREA_REGISTROS_TRAZA;
  /

  {size: 12} And the error message I get States is just:
  "The trigger was created with compilation errors."
  Thanks for the help {size}

  You must prefix your NEW "columns" with a colon, as in: NEW.

• Update of a Base Table in a view with a UNPIVOT function.

  Hello
  I have a requirement to upgrade a Base Table in a view.
  This view has the query by using a function of the UNPIVOT operator to display the columns in the tables of the basic of the lines.
  I need to update/insert in / remove the Base Table by accessing the view (the user has access to the Base Table, so the DML on the view).
  
  Here is the table I created:-
  

  CREATE TABLE PERSON_DETAILS
  (
    PID            VARCHAR2(10 BYTE),
    FIRSTNAME      VARCHAR2(1000 BYTE),
    LASTNAME       VARCHAR2(1000 BYTE),
    PHONENUMBER    VARCHAR2(1000 BYTE),
    ADDRESS1       VARCHAR2(1000 BYTE),
    ADDRESS2       VARCHAR2(1000 BYTE),
    COUNTRY_CODE   VARCHAR2(1000 BYTE),
    LANGUAGE_CODE  VARCHAR2(1000 BYTE),
    EMAIL          VARCHAR2(1000 BYTE)
  )

  The sample values are inserted in this table using the script below: -.
  

  insert into person_details values ('1','XYZ','ABC','1234567890','India','Asia','IN','EN','[email protected]');
  insert into person_details values ('2','XYZ2','ABC2','1234567890','India','Asia','IN','EN','[email protected]');

  The code for the display is as below: -.
  

  CREATE OR REPLACE FORCE VIEW PERSON_DETAILS_VIEW
  (
     PID,
     CD_NAME,
     CD_VALUE
  )
  AS
     SELECT "PID", "CD_NAME", "CD_VALUE"
       FROM person_details UNPIVOT INCLUDE NULLS (cd_value
                           FOR cd_name
                           IN  (firstname AS 'First Name',
                               lastname AS 'Last Name',
                               phonenumber AS 'Phonenumber',
                               address1 AS 'address1',
                               address2 AS 'address2',
                               country_code AS 'Country Code',
                               language_code AS 'Language Code',
                               email AS 'Email') );

  Here are the values of the view:-
  

  PID CD_NAME         CD_VALUE
  1    First Name       XYZ
  1    Last Name       ABC
  1    Phonenumber  1234567890 
  1    address1         India
  1    address2         Asia
  1    Country Code   IN
  1    Language Code EN
  1    Email               [email protected]
  2    First Name       XYZ2
  2    Last Name       ABC2
  2    Phonenumber  1234567890
  2    address1         India
  2    address2         Asia  
  2    Country Code   IN
  2    Language Code EN
  2    Email               [email protected]

  The user would fire any statement as below: -.
  

  update person_details_view 
  set cd_value = 'US' where CD_NAME = 'IN'

  The statement above should update the PERSON_DETAILS database table.
  
  I understand that I can write an INSTEAD OF trigger, but I don't know what logic to write in the trigger so that the condition is met.
  
  My Version of Oracle
  

  Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
  PL/SQL Release 11.1.0.7.0 - Production
  CORE    11.1.0.7.0    Production
  TNS for Solaris: Version 11.1.0.7.0 - Production
  NLSRTL Version 11.1.0.7.0 - Production

  Any help would be much appreciated.
  
  Thank you
  Ankit Khare.
  
  Published by: Ankit_Khare84 on June 28, 2012 14:47

  It is definitely possible with an INSTEAD of trigger.

  for example:

  create or replace
  TRIGGER ioft_person
  INSTEAD OF UPDATE
  ON person_details_view
  FOR EACH ROW
  declare
  firstname1  person_details.firstname%type;
  BEGIN
  
                SELECT firstname_new into firstname1
                FROM   (SELECT pid, cd_name, cd_value
                        FROM   
  
                            (
                                select * from person_details_view where (pid, cd_name) not in (select :new.pid, :new.cd_name from dual)
                                union all
                                select :new.pid, :new.cd_name, :new.cd_value from dual
                            )
  
                        )
                PIVOT  ( max(cd_value) AS new FOR (cd_name) IN
                                                        ('First Name' AS firstname,
                                                          'Last Name' as lastname,
                                                          'Phonenumber' as phonenumber,
                                                          'address1' as address1,
                                                          'address2' AS address2,
                                                          'Country Code' as country_code,
                                                          'Language Code' as language_code,
                                                          'Email' as email
                                                          )
                )  where pid = :old.pid;
  
    UPDATE person_details
    SET firstname = firstname1
    WHERE pid = :old.pid;
  END ioft_role_perm;
  

  and that run

  update person_details_view
  set cd_value = 'X|X' where cd_name = 'First Name' and pid=1
  

  The logic is: you need to convert back the view through swivel