How to design a trigger to update only if a column value is changed?

Hello

I have a nice little trigger that updates the CARD table when the table is updated. This table is updated within a master/detail form. It's the main table.
Relaxation is used mainly to update the columns 'FICHE_MODIFIEE_PAR' (in English, it means "modified by") and "DATE_MODIFICATION" (in English, it means 'date modified'). I wish that these columns updates ONLY when the values in the columns 'TOTAL_HEURES' and 'TOTAL_HEURES_EXCEPTIONNELLES' are changed. These two columns have a default value for the number 0. That means that these columns change means change it value from the value 0 by default with another value or a value to another value. If the value of one or two of these two columns changes, the trigger must be fired for updating the column 'FICHE_MODIFIEE_PAR' and 'DATE_MODIFICATION '.

create or replace TRIGGER  OBSERVATOIRE.TIB_FICHE
  before insert or update on OBSERVATOIRE.FICHE
  for each row
begin
    if inserting and :new.fiche_id is null then
        select FICHE_SEQ.NEXTVAL INTO :new.FICHE_ID from dual;
    end if;
    if inserting then
        :new.fiche_cree_par := v('USER');
        :new.date_creation := sysdate;
    end if;
    if updating then
        :new.fiche_modifiee_par := v('USER');
        :new.date_modification := sysdate;
    end if;
end;

Thank you for your help.

Christian

Hello Christian,.

You can reference and compare the old and new values. For example
IF: NEW. TOTAL_HEURES <> : OLD. TOTAL_HEURES OR: NEW. TOTAL_HEURES_EXCEPTIONNELLES <> : OLD. TOTAL_HEURES_EXCEPTIONNELLES
THEN
do your stuff
END IF;

Greetings,
Roel

http://roelhartman.blogspot.com/
http://www.bloggingaboutoracle.org/
http://www.Logica.com/

Tags: Database

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How to write the trigger for update or delete multiple columns in a table?

Hello

I create one in the form of table of sample_emp. In that, every time I want to change of name, team_id, team_leader_id, supervisor_id, manager_id it must store the update-able and old values of those in the job_history table. When I write the trigger for which it shows "ORA-04082 new or the old value not table level triggers. Here is my emp_table. My table also similar job_history like this. Need your help.

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Hi Joel,.

Venky_prs wrote:

Hello

Header 1	Header 2	Header 3	Header 4	Header 5	Heading 6	Heading 7	8 header	Header 9
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You can try something like this given below to complete the historical table on update and delete.

create or replace TRIGGER  "CLONE_EMP_UPDATE_DELETE"
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BEGIN
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:OLD.RELIEVED_DATE);
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Hope this helps you,

Kind regards

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I have a map that made a merger (update/insert) in a table. The problem is that it will always update all rows in this table. I want to update only the changed lines.

Some dummy code that shows what I want to do.
Current situation (all lines updated):

FUSION
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What I'm trying to get (only changed the lines updated):
FUSION
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WHEN MATCHED THEN
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WHERE in WHEN MATCHED t clause is that I'm not able to create via OWB in the mapping. How is that possible?
I tried to look for the solution here and google without success

Thank you!
Hello

you left outer join table2, with table1. Then use a filter to determine which rows in which an attribute has changed or no towing in table1 where found.
To compare attributes use expression with nvl to properly handle nulls: nvl(table2.my_attribute,'#')! = nvl(table1.my_attribute,'#')

Kind regards
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Hi all
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1.lv_data,
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```
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```
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```
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[/code  

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```
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Thank you
Kind regards
gurujothi

Edited by: Gurujothi may 1, 2012 19:54
It is generally considered bad practice to store the value even in 2 places. You are having the kind of problems that you are experiencing now. It is much easier to store in the main table and get the value from there where you need to show in your forms.

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OracleBI Discoverer 10g (10.1.2.3)
Oracle Business Intelligence Discoverer Plus 10g (10.1.2.55.26)

I have a Scout more State showing point receipts, receipt of the dates, and if the reception has been inspected. I've got items that need to be inspected each 5th receipt. There must be a function of hand-dandy, that I can use to do that, right?

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Updates the update only changed columns statement?
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How to record updates only
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On Mon, 10 Sep 2007 16:32:43 + 0000 (UTC), "pat6270".
wrote:

> Using DW8. Whenever I'm making small changes & save on the remote server, I can
> say that DW is overwhelming JUST because it takes so long. Is there a
> can I use to get when I do small changes it updates only the change of setting
> Articles rather than crush the intire site every time?

Looks like you put dependent files. Press Ctrl + U, check
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When asked.

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Hi all
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.. .Col 20

Now if I do any change in one of the data column must be changed to
sample_copya... table that contains duplicate column

So for this I thought to create a trigger with the following logic

If updating (col1) then
Update sample_copya set col1: =: new.col1 where n ° 1 =: new.no1;
Otherwise, if the update (col2) then
Update sample_copya set col2: =: new.col2 where n ° 1 =: new.no1;
Otherwise, if the update (col3) then
Update sample_copya set col3: =: new.col3 where n ° 1 =: new.no1;

end if;
But how doi handle if all columns are changed or say 2 columns record the number of columns is more than 20...
I would like to know if there is a simpler method to achieve...
Thank you
susf wrote:
Hi all
I need help in the manufacture of change update trigger in the columns from one table to another table.
For example, table (col1 col 2 col 3 col 4 col 5 samplea
.. .Col 20

Now if I do any change in one of the data column must be changed to
sample_copya... table that contains duplicate column

So for this I thought to create a trigger with the following logic

If updating (col1) then
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Otherwise, if the update (col2) then
Update sample_copya set col2: =: new.col2 where n ° 1 =: new.no1;
Otherwise, if the update (col3) then
Update sample_copya set col3: =: new.col3 where n ° 1 =: new.no1;

end if;
But how doi handle if all columns are changed or say 2 columns record the number of columns is more than 20...
I would like to know if there is a simpler method to achieve...
Thank you

What is the purpose of this trigger?
How can you be sure that ' where n ° 1 =: new.no1 "is true?
How does line in the SAMPLE_COPYA table at the start?
only the last modified value will lie in SAMPLE_COPYA than the previous values is written more

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How can I turn off automatic updates of windows?

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GetAxisScalingMode is updated only after the graphic update

Hello

on a xy chart, I'm traced multiple xy plots and a few vertical lines (2 or 4) to indicate some areas of interest. For the development of these lines, I need to know the value of y minimum and maximum of the graph. That's why I thought using GetAxisScalingMode (autoscaling value), which returns the maximum value without the need to investigate individual data sets (large) of the xy plots ideally.

In principle, this approach works.

Now, to avoid flicker, I use the following sequence:

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Thank you!!

Wolfgang

OK... Finally!

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(1) SetCtrlAttribute (Panel, graph_control, ATTR_REFRESH_GRAPH, FALSE);

(2) plot new xy plots

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(4) vertical lines using plot plot

4A) GetCtrlAttribute (Panel, graph_control, ATTR_NUM_PLOTS, & plot_handles);

4 (b) SetCtrlAttribute (Panel, graph_control, ATTR_PLOT_ZPLANE_POSITION, plot_handles - 1); These two lines are stupid here because the lines are subsequently demolished, but they update the chart axis range!

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Wolfgang

How to design a trigger to update only if a column value is changed?

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