Delete millions of rows

What are the best ways to delete few million rows from a table keeping the table available for the loads and customer access? This table has 50 million rows, and I need to retain few months’ data and delete the rest. Please let me know if you have any ideas

deletion of 2 million rows in oracle 10g
answer does not change

Similar Messages

Delete millions of rows and fragmentation

Hi Gurus,
i have deleted 20 lak rows from a table which has 30 lak rows,
and i wanted to release the fragmented space , please tell me the procedure other than exp/imp or alter table move
and also the recommended way to do this prod env... (coalesce /alter move etc.. )
db version is 11.2
Thanks for great help
Raj

870233 wrote:
Hi Gurus,
i have deleted 20 lak rows from a table which has 30 lak rows,
and i wanted to release the fragmented space , please tell me the procedure other than exp/imp or alter table move
and also the recommended way to do this prod env... (coalesce /alter move etc.. )
db version is 11.2
Thanks for great help
RajInstead of Deleting 2 Million rows out of 3 Million, I would suggest Creating a Temporary table with data that should be retained and Dropping the original table.
I believe, this will amount to lesser work.
Steps would be like below:
1. Create table your_table_temp as select * from your_table where condition to retain records;
2. Drop table your_table;
3. Alter table your_table_temp rename to your_table;
You might as well want to exploit the advantage provided by the NOLOGGING while loading your temp table.

How to improve DELETE statement that remove millions of rows?

The following query take lot of time when exectued, even after I drop the indexes, is there a better way to write the following query?
DELETE from pwr_part
where ft_src_ref_id in (select ft_src_ref_id
from pwr_purge_ft);
--Table:pwr_part
--UIP10371 foreign key (FT_SRC_REF_ID, FT_DTL_SEQ)
--Table: pwr_purge_ft
--PWR_PURGE_FT_PK Primary key (FT_SRC_REF_ID, FT_DTL_SEQ)
select count(*) from pwr_part;
--27,248,294
select count(*) from pwr_purge_ft;
--23,803,770
Explain Plan:
Description Object owner Object name Cost Cardinality Bytes
SELECT STATEMENT, GOAL = ALL_ROWS 224993 5492829 395483688
HASH JOIN RIGHT SEMI 224993 5492829 395483688
INDEX FAST FULL SCAN PWR_OWNER PWR_PURGE_FT_PK 43102 23803770 142822620
PARTITION HASH ALL 60942 27156200 1792309200
TABLE ACCESS FULL PWR_OWNER PWR_PART 60942 27156200 1792309200

Helio Dias wrote:
Have you ever thought about bulk collection?
http://heliodias.wordpress.com/2010/01/07/best-way-to-delete-millions-rows-from-hundred-millions-table/
One reason for which I would hate your suggestion.
Regular Delete vs Bulk Delete

Deleting Millions of Selected rows from a production Table.

Hi Friends.
I have to copy millions of Rows from one table to a second one to do and export of its Data and run a Truncate command after(Second one). The main problem is the Time spend it in the Deleting process. The Inserting is nice and easy with /* +Append */ But The Deleting is a mess because required to much time and make the process really slow....Could someone give me a tip with this issue? Thanks for your time!
Emmanuel G. Carrillo Trejos.

It would help if you could quntify "subset" here. If you are deleting 75% of the table, it will likely be faster to follow Syed's suggestion and move the data you want to keep to a new table, drop the old table, and rename the new table to the old table name. If you are going to be deleting a small fraction of rows, but you are going to be doing this regularly (i.e. you delete all rows older than X days), it will be faster to partition the table and drop the partition.
I see no possible beneit to playing around with any transaction-related comands.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Enhance a SQL query with update of millions of rows

Hi ,
I have this query developed to updated around 200 million of rows on my production , I did my best but please need your recommendations\concerns to make it more enhanced
DECLARE @ORIGINAL_ID AS BIGINT
SELECT FID001 INTO #Temp001_
FROM INBA004 WHERE RS_DATE>='1999-01-01'
AND RS_DATE<'2014-01-01' AND CLR_f1st='SSLM'
and FID001 >=12345671
WHILE (SELECT COUNT(*) FROM #Temp001_ ) <>0
BEGIN
SELECT TOP 1 @ORIGINAL_ID=FID001 FROM #Temp001_ ORDER BY FID001
PRINT CAST (@ORIGINAL_ID AS VARCHAR(100))+' STARTED'
SELECT DISTINCT FID001
INTO #OUT_FID001
FROM OUTTR009 WHERE TRANSACTION_ID IN (SELECT TRANSACTION_ID FROM
INTR00100 WHERE FID001 = @ORIGINAL_ID)
UPDATE A SET RCV_Date=B.TIME_STAMP
FROM OUTTR009 A INNER JOIN INTR00100 B
ON A.TRANSACTION_ID=B.TRANSACTION_ID
WHERE A.FID001 IN (SELECT FID001 FROM #OUT_FID001)
AND B.FID001=@ORIGINAL_ID
UPDATE A SET Sending_Date=B.TIME_STAMP
FROM INTR00100 A INNER JOIN OUTTR009 B
ON A.TRANSACTION_ID=B.TRANSACTION_ID
WHERE A.FID001=@ORIGINAL_ID
AND B.FID001 IN (SELECT FID001 FROM #OUT_FID001)
DELETE FROM #Temp001_ WHERE FID001=@ORIGINAL_ID
DROP TABLE #OUT_FID001
PRINT CAST (@ORIGINAL_ID AS VARCHAR(100))+' FINISHED'
END

DECLARE @x INT
SET @x = 1
WHILE @x < 44,000,000 -- Set appropriately
BEGIN
UPDATE Table SET a = c+d where ID BETWEEN @x AND @x + 10000
SET @x = @x + 10000
END
Make sure that ID column has a CI on.
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence

How to write a cursor to check every row of a table which has millions of rows

Hello every one.
I need help. please... Below is the script (sample data), You can run directly on sql server management studio.
Here we need to update PPTA_Status column in Donation table. There WILL BE 3 statuses, A1, A2 and Q.
Here we need to update PPTA_status of January month donations only. We need to write a cursor. Here as this is a sample data we have only some donations (rows), but in the real table we have millions of rows. Need to check every row.
If i run the cursor for January, cursor should take every row, row by row all the rows of January.
we have donations in don_sample table, i need to check the test_results in the result_sample table for that donations and needs to update PPTA_status COLUMN.
We need to check all the donations of January month one by one. For every donation, we need to check for the 2 previous donations. For the previous donations, we need to in the following way. check
If we want to find previous donations of a donation, first look for the donor of that donation, then we can find previous donations of that donor. Like this we need to check for 2 previous donations.
If there are 2 previous donations and if they have test results, we need to update PPTA_STATUS column of this donatioh as 'Q'.
If 2 previous donation_numbers has test_code column in result_sample table as (9,10,11) values, then it means those donations has result.
BWX72 donor in the sample data I gave is example of above scenario
For the donation we are checking, if it has only 1 previous donation and it has a result in result_sample table, then set this donation Status as A2, after checking the result of this donation also.
ZBW24 donor in the sample data I gave is example of above scenario
For the donation we are checking, if it has only 1 previous donation and it DO NOT have a result in result_sample table, then set this donation Status as A1. after checking the result of this donation also.
PGH56 donor in the sample data I gave is example of above scenario
like this we need to check all the donations in don_sample table, it has millions of rows per every month.
we need to join don_sample and result_sample by donation_number. And we need to check for test_code column for result.
-- creating table
CREATE TABLE [dbo].[DON_SAMPLE](
[donation_number] [varchar](15) NOT NULL,
[donation_date] [datetime] NULL,
[donor_number] [varchar](12) NULL,
[ppta_status] [varchar](5) NULL,
[first_time_donation] [bit] NULL,
[days_since_last_donation] [int] NULL
) ON [PRIMARY]
--inserting values
Insert into [dbo].[DON_SAMPLE] ([donation_number],[donation_date],[donor_number],[ppta_status],[first_time_donation],[days_since_last_donation])
Select '27567167','2013-12-11 00:00:00.000','BWX72','A',1,0
Union ALL
Select '36543897','2014-12-26 00:00:00.000','BWX72','A',0,32
Union ALL
Select '47536542','2014-01-07 00:00:00.000','BWX72','A',0,120
Union ALL
Select '54312654','2014-12-09 00:00:00.000','JPZ41','A',1,0
Union ALL
Select '73276321','2014-12-17 00:00:00.000','JPZ41','A',0,64
Union ALL
Select '83642176','2014-01-15 00:00:00.000','JPZ41','A',0,45
Union ALL
Select '94527541','2014-12-11 00:00:00.000','ZBW24','A',0,120
Union ALL
Select '63497874','2014-01-13 00:00:00.000','ZBW24','A',1,0
Union ALL
Select '95786348','2014-12-17 00:00:00.000','PGH56','A',1,0
Union ALL
Select '87234156','2014-01-27 00:00:00.000','PGH56','A',1,0
--- creating table
CREATE TABLE [dbo].[RESULT_SAMPLE](
[test_result_id] [int] IDENTITY(1,1) NOT NULL,
[donation_number] [varchar](15) NOT NULL,
[donation_date] [datetime] NULL,
[test_code] [varchar](5) NULL,
[test_result_date] [datetime] NULL,
[test_result] [varchar](50) NULL,
[donor_number] [varchar](12) NULL
) ON [PRIMARY]
---SET IDENTITY_INSERT dbo.[RESULT_SAMPLE] ON
---- inserting values
Insert into [dbo].RESULT_SAMPLE( [test_result_id], [donation_number], [donation_date], [test_code], [test_result_date], [test_result], [donor_number])
Select 278453,'27567167','2013-12-11 00:00:00.000','0009','2014-01-20 00:00:00.000','N','BWX72'
Union ALL
Select 278454,'27567167','2013-12-11 00:00:00.000','0010','2014-01-20 00:00:00.000','NEG','BWX72'
Union ALL
Select 278455,'27567167','2013-12-11 00:00:00.000','0011','2014-01-20 00:00:00.000','N','BWX72'
Union ALL
Select 387653,'36543897','2014-12-26 00:00:00.000','0009','2014-01-24 00:00:00.000','N','BWX72'
Union ALL
Select 387654,'36543897','2014-12-26 00:00:00.000','0081','2014-01-24 00:00:00.000','NEG','BWX72'
Union ALL
Select 387655,'36543897','2014-12-26 00:00:00.000','0082','2014-01-24 00:00:00.000','N','BWX72'
UNION ALL
Select 378245,'73276321','2014-12-17 00:00:00.000','0009','2014-01-30 00:00:00.000','N','JPZ41'
Union ALL
Select 378246,'73276321','2014-12-17 00:00:00.000','0010','2014-01-30 00:00:00.000','NEG','JPZ41'
Union ALL
Select 378247,'73276321','2014-12-17 00:00:00.000','0011','2014-01-30 00:00:00.000','NEG','JPZ41'
UNION ALL
Select 561234,'83642176','2014-01-15 00:00:00.000','0081','2014-01-19 00:00:00.000','N','JPZ41'
Union ALL
Select 561235,'83642176','2014-01-15 00:00:00.000','0082','2014-01-19 00:00:00.000','NEG','JPZ41'
Union ALL
Select 561236,'83642176','2014-01-15 00:00:00.000','0083','2014-01-19 00:00:00.000','NEG','JPZ41'
Union ALL
Select 457834,'94527541','2014-12-11 00:00:00.000','0009','2014-01-30 00:00:00.000','N','ZBW24'
Union ALL
Select 457835,'94527541','2014-12-11 00:00:00.000','0010','2014-01-30 00:00:00.000','NEG','ZBW24'
Union ALL
Select 457836,'94527541','2014-12-11 00:00:00.000','0011','2014-01-30 00:00:00.000','NEG','ZBW24'
Union ALL
Select 587345,'63497874','2014-01-13 00:00:00.000','0009','2014-01-29 00:00:00.000','N','ZBW24'
Union ALL
Select 587346,'63497874','2014-01-13 00:00:00.000','0010','2014-01-29 00:00:00.000','NEG','ZBW24'
Union ALL
Select 587347,'63497874','2014-01-13 00:00:00.000','0011','2014-01-29 00:00:00.000','NEG','ZBW24'
Union ALL
Select 524876,'87234156','2014-01-27 00:00:00.000','0081','2014-02-03 00:00:00.000','N','PGH56'
Union ALL
Select 524877,'87234156','2014-01-27 00:00:00.000','0082','2014-02-03 00:00:00.000','N','PGH56'
Union ALL
Select 524878,'87234156','2014-01-27 00:00:00.000','0083','2014-02-03 00:00:00.000','N','PGH56'
select * from DON_SAMPLE
order by donor_number
select * from RESULT_SAMPLE
order by donor_number

You didn't mention the version of SQL Server. It's important, because SQL Server 2012 makes the job much easier (and will also run much faster, by dodging a self join). (As Kalman said, the OVER clause contributes to this answer).
Both approaches below avoid needing the cursor at all. (There was part of your explanation I didn't understand fully, but I think these suggestions work regardless)
Here's a SQL 2012 answer, using LAG() to lookup the previous 1 and 2 donation codes by Donor: (EDIT: I overlooked a couple things in this post: please refer to my follow-up post for the final/fixed answer. I'm leaving this post with my overlooked
items, for posterity).
With Results_Interim as
Select *
, count('x') over(partition by donor_number) as Ct_Donations
, Lag(test_code, 1) over(partition by donor_number order by donation_date ) as PrevDon1
, Lag(test_code, 2) over(partition by donor_number order by donation_date ) as PrevDon2
from RESULT_SAMPLE
Select *
, case when PrevDon1 in (9, 10, 11) and PrevDon2 in (9, 10, 11) then 'Q'
when PrevDon1 in (9, 10, 11) then 'A2'
when PrevDon1 is not null then 'A1'
End as NEWSTATUS
from Results_Interim
Where Test_result_Date >= '2014-01' and Test_result_Date < '2014-02'
Order by Donor_Number, donation_date
And a SQL 2005 or greater version, not using SQL 2012 new features
With Results_Temp as
Select *
, count('x') over(partition by donor_number) as Ct_Donations
, Row_Number() over(partition by donor_number order by donation_date ) as RN_Donor
from RESULT_SAMPLE
, Results_Interim as
Select R1.*, P1.test_code as PrevDon1, P2.Test_Code as PrevDon2
From Results_Temp R1
left join Results_Temp P1 on P1.Donor_Number = R1.Donor_Number and P1.Rn_Donor = R1.RN_Donor - 1
left join Results_Temp P2 on P2.Donor_Number = R1.Donor_Number and P2.Rn_Donor = R1.RN_Donor - 2
Select *
, case when PrevDon1 in (9, 10, 11) and PrevDon2 in (9, 10, 11) then 'Q'
when PrevDon1 in (9, 10, 11) then 'A2'
when PrevDon1 is not null then 'A1'
End as NEWSTATUS
from Results_Interim
Where Test_result_Date >= '2014-01' and Test_result_Date < '2014-02'
Order by Donor_Number, donation_date

How to delete the selected rows with a condition in alv

dear all,
i am using the code in object oriented alv.
WHEN 'DEL'.
PERFORM delete_rows.
FORM delete_rows.
DATA : lv_rows LIKE lvc_s_row.
data : wa_ROWs like LVC_S_ROW.
FREE : gt_rows.
CALL METHOD alv_grid->get_selected_rows
IMPORTING
et_index_rows = gt_rows.
IF gt_rows[] IS INITIAL.
MESSAGE s000 WITH text-046.
EXIT.
ENDIF.
loop at gt_rows into wa_ROWs .
if sy-tabix ne 1.
wa_ROWs-INDEX = wa_ROWs-INDEX - ( sy-tabix - 1 ).
endif.
delete gt_sim INDEX wa_ROWs-INDEX .
endloop.
the rows to be deleted from int.tab gt_sim not in the alv display.
all the rows should not be deleted if one of the field in gt_sim eq 'R'.
how to check this condition

dear jayanthi,
ok if i am coding like that as u mentioned ,
it will exit the loop when first time the field value is 'R'.
if any of the selected rows contains field value 'R'. it shold not delete all the selected rows.
as u suggested it will not delete after first time the field value is r.
i am deleting it by tab index so,
suppose if i am selecting the row without field value R say its tabix is 1.
the next row with tabix 2 with field value R.
it deletes the first row and exits , it should not delete the first row also.

How to delete empty table row in the form using formcalc

Hi All,
I am displaying a table in PDF which has a few empty rows in between. I need to delete those specific rows when the form is generated, so that they do not appear on the form.
Has anyone worked on this before? If so, can you please share the code or advise.
Regards
Aditi

Hello,
first: there MUST be same backend you get the data from right? So in this backend there is some data extraction coding, right? So the result of this coding is bad, like some unwanted extra rows are returned in the proper set of rows, right? So why don´t you change this backend coding not to return the unwanted rows?
IF that is not possible (I don´t believe this!), but just to describe other possibilities, you can place a script on the row subform event like initialize and test if there is something missing there and if so, set the presence of such a row to hidden.
JS: If (this.fieldA.rowValue == "") { this.presence = "hidden"; }
Regards, Otto

How to delete a table row in the context?

Hi,
I've got a table in my context that I access with <TABLE-NAME>-<TABLE-COLUMN>[index].
For example <TABLE-NAME>-<TABLE-COLUMN>.dim delivers the amount of entries in this table.
Now I want to delete a specific row in this table without any ABAP-code. Is there a possibility to do this?
I tried to set the .dim = <old dimvalue - 1>, but the row seems to still exist, it's just empty.
There must be a method like 'delete', or am I wrong...?
kr, achim

Alexander,
could you provide an example please?
for example, if I have a code like this:
`repeat j from 1 to MYTABLE-MYCOLUMN1.dim`
MYTABLE-MYCOLUMN1[j] = "value1";
MYTABLE-MYCOLUMN2[j] = "value2";
`end`
and now assume, I want to delete the last row of the table, what would it look like?
`MYTABLE.deleteValue(MYCOLUMN1, j)` ???
kind regards, achim

How to delete a particular row in ALV table

Hi,
How to delete a particular row in ALV table based on some condition(by checking value for one of the columns in a row)
Thanks
Bala Duvvuri

Hello Bala,
Can you please be a bit more clear as to how you intend to delete the rows from your ALV? By the way deleting rows from an ALV is no different from deleting rows from a normal table. Suppose you have enabled selection property in ALV & then select multiple rows and click up on a button to delete the rows then below would be the coding: (Also keep in mind that you would have to maintain the Selection property of the context node that you are binding to your ALV to 0..n)
data : lr_table_settings TYPE REF TO if_salv_wd_table_settings,
             lr_config          TYPE REF TO cl_salv_wd_config_table.
lr_table_settings ?= lr_config.
** Setting the ALV selection to multiple selection with no lead selection
lr_table_settings->set_selection_mode( value = cl_wd_table=>e_selection_mode-multi_no_lead ).
Next delete the selected rows in the action triggered by the button:
METHOD onactiondelete_rows .
DATA: wd_node TYPE REF TO if_wd_context_node,
         lt_node1 TYPE ig_componentcontroller=>elements_node,
         wa_temp TYPE REF TO if_wd_context_element,
         lt_temp TYPE wdr_context_element_set,
         row_number TYPE i VALUE 0.
wd_node = wd_context->get_child_node( name = 'NODE' ).
CALL METHOD wd_node->get_selected_elements
    RECEIVING
      set = lt_temp.
LOOP AT lt_temp INTO wa_temp.
    wd_node->remove_element( EXPORTING element = wa_temp ).
ENDLOOP.
CALL METHOD wd_node->get_static_attributes_table
    EXPORTING
      from = 1
      to    = 2147483647
    IMPORTING
      table = lt_node1.
wd_node->bind_table( new_items = lt_node1 ).
ENDMETHOD.
If in case this isn't your requirement please do let me know so that I can try come up with another analysis.
Regards,
Uday

How to delete the selected rows in a JTable on pressing a button?

How to delete the selected rows in a JTable on pressing a button?

You are right. I did the same.
Following is the code where some of them might find it useful in future.
jTable1.selectAll();
int[] array = jTable1.getSelectedRows();
for(int i=array.length-1;i>=0;i--)
DefaultTableModel model = (DefaultTableModel)jTable1.getModel();
model.removeRow(i);
}

Can we delete a single row in SID table?

I am having a problem with conversion exit in SID table.
These are the error messages.
Value in SID table is TPV; correct value is TPV; SID in SID table is 875
Message no. RSRV200
Diagnosis
The following data record either has an incorrect internal format or the characteristic value that is in the correct format appears as a corrected value of another incorrect value:
·     Characteristic value: TPV
·     SID: 875
·     Correct characteristic value: (see below) TPV
·     SID after correction: 875
Value in SID table is TPV 2008; correct value is TPV; SID in SID table is 2887
Message no. RSRV200
Diagnosis
The following data record either has an incorrect internal format or the characteristic value that is in the correct format appears as a corrected value of another incorrect value:
·     Characteristic value: TPV 2008
·     SID: 2887
·     Correct characteristic value: (see below) TPV
·     SID after correction: 875
Now the row with SID 875 is causing the problem. Is it possible that I can delete only this row in the SID table.
Thanks for your help
Subra

Hi.....
Procedure :
RSA1>>>InfoObjects >>Right Click on InfoObject >>delete Master Data >> u can see the option of deleting SIDs............
Otherwise........u can delete value from a SID table......u can use tcode SE14...........to delete the entries.........
Check this......
deleting contents of SID table.
But still I will suggest u not to delete SID...........it may lead to inconsistency of data.........
Try to repair SId using the program : RSDMD_CHECKPRG_ALL or RSRV...........
Regards,
Debjani......

How can I delete the last row of a Matrix

Hi All,
Does anyone know whether deleting the last row of a matrix controlled by a UDO child table gives problems? I have the strange effect that I cannot delete the very last existing row in the matrix, i.e. after updating the delete the last to-be deleted row comes back into my matrix !!
I give you a snippet of my code (function getSelectedRow gives the selected row in the matrix):
==
if (evnt.ItemUID.Equals(ViewConstants.Items.DELETEBUTTON))
if (evnt.EventType == BoEventTypes.et_ITEM_PRESSED)
    if (evnt.BeforeAction)
      form = BusinessOne.Application.Forms.Item(formUID);
      mtx = (Matrix)form.Items.Item(ViewConstants.Items.MATRIX).Specific;
     int numRow = getSelectedRow(mtx);
     if (numRow != -1)
                                        mtx.DeleteRow(numRow);
                                        form.Mode = BoFormMode.fm_UPDATE_MODE;
                                   Item btn = (Item)form.Items.Item(ViewConstants.Items.ADDBUTTON);
                                   btn.Enabled = true;
==
Cheers,
Marcel Peek
Alpha One
Message was edited by: Marcel Peek
Message was edited by: Marcel Peek

Yes, there is a problem to delete the last row.
It is fixed in version 2005.

Problem with deleting a new row in table

Hi
I'm using JDev 11.1.1.2.0
Please someone tell me if he/she experience the same issue:
- I have an simple entity with PrimaryKey other than RowID. I have a ViewObject on top of the Entity.
- From this view I create Editable table and add createInsert and Delete buttons.
This is one of the most common scenarios.
Now when I click createInsert a new blank row is added to the table. I enter it's primary key (because is mandatory) and move selection to some other row (let say X).
When I go back and select my new Row and press Delete -> it is not deleted but the row X is deleted.
This is because the table is not refreshed and it cant select the new row.
How can I deal with this problem?
Thanks
Angel

I tried with adding my selectionListener method like this:
        Object next = selectionEvent.getAddedSet().iterator().next();
        Object prev = selectionEvent.getRemovedSet().iterator().next();
        System.out.println(prev + " " + next);
        DCBindingContainer bc = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
        DCIteratorBinding iter = (DCIteratorBinding)bc.get("TestDopSyotvIterator");
        FacesCtrlHierBinding object1 = (FacesCtrlHierBinding)bc.get("TestDopSyotv");
        FacesCtrlHierBinding.FacesModel collectionModel = (FacesCtrlHierBinding.FacesModel)object1.getCollectionModel();
        collectionModel.makeCurrent(selectionEvent);I add new row, enter data and change selection. Then the system.out prints the right keys of the rows.
But when I go back to the new added row, the system.out prints "null" for the "next" value (that means the rowKey was lost).
Any ideas how to fix this?

Solved: Delete Using Automatic Row Processing

See Scott's reply below for the answer.
Hi there,
I have an application built in APEX 3.0.1 that I would like to be able to use a button to delete a single row from an underlying database table (owned by the parsing schema).
My APEX page has a 3 HTML regions on it:
1. Only a Select List and Go button for User selection (of Debit Note)
2. Ten display Items (Text Field, Disabled saves state) displaying further information about User selection
3. Conditional Delete button (region with custom image) - only displays when P73_DEBITNOTEID is NOT NULL
I'd like this button to be used to Delete the Selected Item and thought I'd be able to use a Data Manipulation Page Process - Automatic Row Processing (DML) page process to do this.
However, when I go through the wizard the Select item containing primary key column value field has no values in the search list.
My first question is why was there no values in the list?
So I manually entered the Item I required (P73_DEBITNOTEID) but when I run the page and click the button I get a PL/SQL missing expression error.
What is the best practice method to do DML actions on the underlying database tables. The tables are all owned by the parsing schema.
Your help in resolving this matter would be greatly appreciated.
Kind Regards,
Gary.

Gary,
The DML processes (and the creation wizards for them) are for use with items having source type Database Column. If your page items don't use this source type, then neither the Automated Row Fetch nor the Automatic Row Processesing (DML) process types will work.
Scott

Delete millions of rows

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