Re: Start up question about triggers
| От | Aaron Bono |
|---|---|
| Тема | Re: Start up question about triggers |
| Дата | |
| Msg-id | bf05e51c0606220903v3ece4130ufa191d936266494c@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Start up question about triggers ("Forums @ Existanze" <forums@existanze.com>) |
| Ответы |
Re: Start up question about triggers
|
| Список | pgsql-sql |
Why not just create a history table and have the trigger copy the data out of the table into the history table with a time stamp of the change. Then you don't need the query.
For example
Table A
a_id,
a_value1,
a_value2
Table A_hist
a_id,
a_dt,
a_value1,
a_value2
Then A_hist has a PK of a_id, a_dt
This would also be a lot easier to see WHAT changed and WHEN. You can use the NEW.col and OLD.col to see the new and old values during inserts and updates.
Of course, I don't know your need so this may not be achieving your goal.
-Aaron Bono
For example
Table A
a_id,
a_value1,
a_value2
Table A_hist
a_id,
a_dt,
a_value1,
a_value2
Then A_hist has a PK of a_id, a_dt
This would also be a lot easier to see WHAT changed and WHEN. You can use the NEW.col and OLD.col to see the new and old values during inserts and updates.
Of course, I don't know your need so this may not be achieving your goal.
-Aaron Bono
On 6/22/06, Forums @ Existanze <forums@existanze.com> wrote:
Sorry This is the complete messageHello all,I know that this question may be really simple, but I have decided to ask here due to fact that I don't know how to search for this on google or on the docs.I created a trigger fuction which updates a specific row in some table A. Is it possible to retain the query that was used to trigger the function. For exampleTable Aquery_row_idquery_rowTABLE BidnameIf I create a trigger on table B that says that after the insert command to write the query into table A. So if I doinsert into B values(1,"Blah")this will trigger my trigger. Is there any way to get the "insert into B values(1,"Blah")? At the moment I can see only the type of query that it is (INSERT UPDATE DELETE)best regards,Fotis
From: pgsql-sql-owner@postgresql.org [mailto:pgsql-sql-owner@postgresql.org] On Behalf Of Forums @ Existanze
Sent: 22 June 2006 12:19
To: pgsql-sql@postgresql.org
Subject: [SQL] Start up question about triggersHello all,I know that this question may be really simple, but I have decided to ask here due to fact that I don't know how to search for this on google or on the docs.I created a trigger fuction which updates a specific row in some table A. Is it possible to retain the query that was used to trigger the function. For exampleTable Aquery_row_idquery_rowTABLE Bidname
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