Deleting rows from a table

COuld anyone tell me how to delete rows from a table which has millions of rows.
TIA,
Oracle user

if you are deleting all the rows, use "truncate table" in sql*plus.
or if you are deleting all but a handful of rows, then copy the rows you still want to a spare table, drop the original table, and rename the spare table back to the original table's name.
hope this helps

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The best way I know of would be to use an "afterReport trigger".
An afterReport trigger fires after the XML output has been generated.
Thanks,
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Deleting row from a table binded to a matrix

Hi all
i have a form with a matrix binded to a user table which is handled as a Master Data lines by UDO.
i want to enable deleting lines from the table by selecting a row in the matrix and clicking a delete button.
currently i'm handling the click event by usint the method DeletRow of the matrix object.
when i press the Update button (UID = "1"). the fact that a row was deleted from the matrix does not affect the bounded table.
my question is how in code can i cause the deletion of a row from the matrix to also be deleted from the database table?
appreciate the help
Yoav

Hi Yechiel
flushToDatasource make the following:
Flushes current data from the GUI to the bounded data source using the following process:
1)Cleans the data source.
2)Copies each row from the matrix to the corresponding data source record.
In other words: This method load data from Matrix to DataSource (but not to database)
the next step is update database from userdatasource
Note: You migth read sdk help for more information

Deleting rows from one table while filter condition lies into another table

Hi All,
I'm facing a problem deleting a row from a table where the condition lies in other table. To ealaborate the scenario further let's say I have two table T1 (transaction table) and T2 (Master Table). I want to delete a record from table T1 by checking some conditions lies in table T2.
I tried with the below query but this query deleting records from both the table.
DELETE FROM ( SELECT * FROM T1 top INNER JOIN T2 tp
ON top.TID = tp.TID
WHERE top.DEAL_SITE_ID = inputparameter1
AND (TP.SEGMENT <>inputparameter2 OR tp.segment is not null));
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Any help would be highly appreciated. Thanks in advance.
Regards,
Subhadeep

SQL> select *
2   from the_table;
X          Y
AA         a
BB         a
CC         a
AA         b
DD         b
SQL> select *
2   from the_table_2;
X          Y
AA         a
BB         a
CC         a
SQL> delete from
2 (
3 select *
4 from the_table t1 inner join the_table_2 t2
5 on t1.x = t2.x
6 and t1.y = t2.y);
3 rows deleted.
SQL> select *
2   from the_table;
X          Y
AA         b
DD         b
SQL> select *
2   from the_table_2;
X          Y
AA         a
BB         a
CC         a

Prevent user from deleting rows from all tables in his own schema

Hi,
How can I prevent user from deleting rows in all tables in his own schema.
I want the user to not able to delete rows from any existing or new tables that might be added in the future.
The user does not have the "DELETE ANY TABLE" system privilege.
Please advise.
Thanks.

Nowadays, I'd also avoid triggers (if possible).
Sometimes, when I daydream, I'm rewriting a few applications that I've contributed to as a newbie, and I'm very ashamed of it nowadays.
From what I've experienced, in retrospective, the emphasis on teaching 'Oracle stuff' has been lying far too much on PL/SQL row-by-row oriented processing instead of letting Oracle 'crunch' sets at once.
Most of my debugging hours ended up in discovering one or more database triggers 'doing stuff automagically'.
Another nice blogpost: http://rwijk.blogspot.com/2007/09/database-triggers-are-evil.html
Regarding OP's question:
I would just rethink/reconsider this requirement completely.
Correctly implementing privileges and roles seems the best way to go, yes.
Triggers? Nah...
pre-post-edit, noticed thread got updated just before posting
Don't know what you mean with 'namedropping', but I think it's legitimate to point other readers to interesting Oracle related opinions/articles that do have a technical background and lots of interesting examples.
post dreaded OTN outage edit (from here)
Again: I would just rethink/reconsider this requirement completely.
Both trigger/vpd are being used to hide a design flaw here.

Deleting rows from a table matching values from an ascii file

Hi All,
I have an ASCII file with 12,000 lines. Each line represents a value (you may call this as bad data) that matches a database column value in table. I have to delete all the rows from a database table (~ 400,000 rows) where a column value matches the bad data value. Linux is the OS is where SQLPLUS client is installed and I can execure any SQL queries from this Linux server. Oracle DB server is 10g.
Any input on how to do this will be helpfull to me. I am not a database programmer so if any details will be appreciated.
Thanks

Hi,
That's going to be very slow (among other problems) if you don't have the bad data in a table. An index-organized table would probably be best.
Assuming the data data are uinique strings, up to 30 characters long, and that you don't need any other columns, you can create a table like this:
CREATE TABLE bad_data
(   bad_txt    VARCHAR (30)
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Once you have a table, actually removing the rows from the big table might be as simple as:
DELETE big_table
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DELETED rows from internal table

Hi Experts,
If I delete row/s from an internal table
using the command DELETE ADJACENT DUPLICATES,
is there a way to get these deleted rows.
Thanks in advance.
Rose

Hi roselie,
1. ofcourse not.
2.hence, before that,
u can declare another internal table,
similar to original,
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3. ITAB1[] = ORIGINALITAB[].
regards,
amit m.

How to delete rows from multiple tables when pressing button

Hi, I'm wondering how do I delete a row from two different tables at the same time when I press the Delete button. Both tables have GROUP_ID as their primary key.

Nevermind! I realized that I had "reset" before my process to delete from the 2nd table.

Deleting Row from Advanced Table Region

Dear Members,
I have an OAF Page where I am using Advanced Table Region to display the data of a table.
As soon as the page opens I am displaying one line in Advanced Table Region. In this region I have also given a button called ADD ANOTHER ROW +(using the feature of ADVANCED TABLE COMPONENTS, FOOTER, TABLE FOOTER , ADD TABLE ROW)+.
So when user clicks on this button a new row will be added. Now if user wants to delete it how to achieve this.
Kindly please help me in achieving this functionality.
Many thanks in advance.
Best Regards,
Arun Reddy D.

Hi Arun,
First you need to create a button or image called Delete on your Advanced table region.
Action Type : firePartialAction
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Edited by: SK on Feb 9, 2011 5:21 PM

Programatically Deleting Rows from a Table?

I need to do some background cleanup tasks that include saving some data and deleting some data into the database. I'm trying to implement this in an extension framework class so that when 'real' application development begins, this background chore code will already be implemented.
I'm creating view objects programmatically to retrieve data, but I don't know how to insert rows or delete rows. Delete statements in view objects fail since they aren't select statements, and code like:
cleanupView.remove();
raises "cleanupView is read-only" errors, since there aren't any entity objects defined for it (I assume, anyway).
How can you insert and delete rows programmatically from a framework extension?

My application of this technique is in a framework extension for generic housekeeping chores whose logic I'd like to keep out of the primary application. As such, it isn't possible to use EO and VO's declaratively.
For anyone else who may travel this path, from the framework extension you can create views and execute DML statements like this: (In this case, in my AppModuleImpl extension)
ViewObject myView = getDBTransaction().getRootApplicationModule().createViewObjectFromQueryStmt("myView","select * from mytable");
myView.executeQuery();
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myView.remove();
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getDBTransaction().executeCommand("delete mytable");
getDBTransaction().executeCommand("commit");
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Delete row from Advanced Table

Hi,
I'm trying to follow the Delete exercise to create a table with delete image for my project. We don't need to have switcher and confirm dialog as exercise does.
My table only has three columns: fromDate, endDate and delete.
I got issue if I entered two dates value then click delete image immediately, then pageContext.getParameter("fromDate") and getParameter("endDate") will return empty string.
I have to click Add another row to reload page then getParameter will return values.
How do I resolve this issue?
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KJ

One approach is to manually empty the fields. But a better approach will be to include an action button on each row to clear the entries programmatically.
--Shiv

Delete rows from fnd tables

hai folks,
right know in my fnd_concurrent_request table nealry 2 lakhs rows are there(clon instance)
can i delete these rows manually.is it recommended?
tell me how can i clen up fnd tables.
regards
dba

To run the Purge Concurrent Request and/or Manager Data program:
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FND_CONC_PP_ACTIONS
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HR - delete rows from internal table

Hello everyone,
First of all sorry for my bad english.
I am programming in the HR module. My program has a selection-screen where the user enters a date.
In my program I do GET pernr, and my declared infotypes automatically get their data. The thing is, now I want to delete the rows that do not correspond to the date in the selection screen.
My date is stored in a range.
thanks in advance

For example try like this,
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Delete row from internal table using field symbol.

Hi friends,
I created dynamic internal table using field symbol. I want to delete some data using where clause.
for example. i want to use like,
DELETE <FS> WHERE KUNNR = WA_KNA1-KUNNR.
Like the above statment it won't work. How i can use delete with where clause in field symbols.
Hope any one can help me.
Thanks and regards
Srikanth. S

hi Srikanth,
I think you have to LOOP through the whole internal table and check each line and decide to delete or not:
LOOP at <itab> INTO <wa>.
ASSIGN COMPONENT 'KUNNR' OF STRUCTURE <wa> TO <field>.
CHECK <field> IS ASSIGNED.
IF <field> EQ WA_KNA1-KUNNR.
DELETE ...
ENDIF.
UNASSIGN <field>.
ENDLOOP.
hope this helps
ec

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hi everyone,
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SAP delivers a standard transaction to edit the contents of this table, VOE4, this is safer then using a custom code to delete rows from the table.

Deleting rows from a table

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