Selecting duplicate rows from table

Hi all,
How to select the duplicates rows present in the table...

SQL> select * from customer;
CUST_ID CUST_NAME LOC
1 Jeff Miami
2 Andrew Michigan
3 Julia Chicago
1 Linda Miami
1 Martha Miami
3 Randy Chicago
3 John Chicago
7 rows selected.
SQL> select * from customer where rowid != (select min(rowid) from customer C where C.cust_id = customer.cust_id);
CUST_ID CUST_NAME LOC
1 Linda Miami
1 Martha Miami
3 Randy Chicago
3 John Chicago
SQL>

Similar Messages

How to update duplicate row from table

Hi,
how to update duplicate row from table?
First to find duplicate row then update duplicate row with no to that duplicate row in oracle.
can you give me suggestion on it?
Thanks in advance.
your early response is appreciated...

In order to find a duplicate row, see:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1224636375004
(or search this forum, your question has been asked before)
In order to update it, just create and use an Oracle sequence, have it start and increment at a value that doesn't exist in your table.
If that doesn't get you going, post some CREATE TABLE + INSERT INTO statements, and the results you want from them, in other words: a complete testcase.

Identifying and reporting Duplicate rows from table

I want to fetch all the duplicate row from the table and need to report all of it.
I am trying to run the below query but and not getting the expected output. Please help me.
Query
SELECT * FROM ADDT_RPT_REQ A WHERE
TRIM(A.EMAIL_ADDR) IN
(SELECT TRIM(EMAIL_ADDR) FROM ADDT_RPT_REQ B
WHERE TRIM(B.EMAIL_ADDR) = TRIM(A.EMAIL_ADDR)
AND A.ph_num IN
(SELECT PH_NUM FROM ADDT_RPT_REQ B
WHERE TRIM(A.PH_NUM ) = TRIM(B.PH_NUM)
There are in all 7 columns in the table where id is Unique Id.
The expected output is something like.
FST_NAME     LAST_NAME     EMAIL_ADDR     WORK_PH_NUM     ROW_ID     LAST_UPD     BU_ID
VALERIE     HALL     [email protected]     7819370177     2-21N-4312     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4327     29-JAN-04     0-R9NH
VALERIE     HALL     [email protected]     6034272034     2-21N-4309     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4317     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     8563748820     2-21N-4329     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4319     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4326     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4324     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     8604237395     2-21N-4330     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819373731     2-21N-4314     31-AUG-04     0-R9NH
VALERIE     HALLORAN     [email protected]     6194771101     2-21N-4331     31-OCT-05     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4316     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4321     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     7-1W4N-293     15-MAY-04     0-R9NH
VALERIE     HALL     [email protected]     2032341604     2-21N-4307     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4325     04-APR-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     2-21N-4315     29-JAN-03     0-R9NH
VALERIE     HALL     [email protected]     7819373737     7-1W4N-291     15-MAY-04     0-R9NH
VALERIE     HALLORAN     [email protected]     6194771101     2-21N-4332     31-OCT-05     0-R9NH
VALERIE     HALL     [email protected]     6038885349     2-21N-4310     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819373737324     2-21N-4328     31-AUG-04     0-R9NH
VALERIE     HALL     [email protected]     7819370177324     2-21N-4313     31-AUG-04     0-R9NH

Hi again!
Try that:
SELECT rowid, fst_name, last_name, email_addr, work_ph_num, row_id, last_upd, bu_id
FROM ADDT_RPT_REQ A
WHERE rowid > (SELECT MIN(rowid)
               FROM ADDT_RPT_REQ B
               WHERE B.fst_name = A.fst_name
                 AND B.last_name = A.last_name
                 AND B.email_addr = A.email_addr
                 AND B.work_ph_num = A.work_ph_num
                 AND B.row_id = A.row_id
                 AND B.last_upd = A.last_upd
                 AND B.bu_id = A.bu_id);This query should show you all duplicate rows. Use the rowid and DELETE to get rid of these rows.
DELETE FROM addt_rpt_req A
WHERE rowid IN (SELECT rowid
                FROM   (SELECT rowid, row_number() OVER (PARTITION BY fst_name, last_name, email_addr, work_ph_num, row_id, last_upd, bu_id
                                                         ORDER BY row_id) dup
                        FROM addt_rpt_req)
                        WHERE dup > 1);Yours sincerely
Florian W.
Edited by: Florian W. on 17.06.2009 14:17

Newbie question: Select one row from table in PL/SQL

Hi,
I want to select one row from the table Employee where Emplyoyee Number is say 200. This is a simple SQL query, but I don't know the equivalent PL/SQL format. I will have 3 out params here - Id itself, Name, Salary. I will then have to populate a java resultset object from these out params.
Later, I'll have to use cursors to retrieve more than one row.
Thanks for any help.

Perhaps something like
CREATE OR REPLACE PROCEDURE get_employee( l_id IN OUT employee.id%TYPE,
                                          l_name OUT employee.name%TYPE,
                                          l_salary OUT employee.salary%TYPE )
AS
BEGIN
SELECT name, salary
    INTO l_name, l_salary
    FROM employee
   WHERE id = l_id;
END;Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Duplicate rows from table

i have a table A suppose it has 3 columns
id name sal
==========
1 A 100
1 A 100
2 B 200
2 B 200
2 B 200
3 C 300
I want to find duplicate rows from the above table without passing any column in to the where clause .
please help me to find out this query.

maybe you should try the database forum...

First attempt to remove duplicate rows from a table...

I have seen many people asking for a way to remove duplicate rows from data. I made up a fairly simple script. It adds a column to the table with the cell selected in it, and adds the concatenation of the data to the left into that new column. then it reads that into a list, and walks through that list to find any that are listed twice. Any that are it marks for DELETE.
It then walks through to find each one marked for delete and removes them (you must go from bottom to top to do this, otherwise your row markings for delete don't match up to the original rows anymore). Last is to delete the column we added.
tell application "Numbers"
activate
tell document 1
-- DETERMINE THE CURRENT SHEET
set currentsheetindex to 0
repeat with i from 1 to the count of sheets
tell sheet i
set x to the count of (tables whose selection range is not missing value)
end tell
if x is not 0 then
set the currentsheetindex to i
exit repeat
end if
end repeat
if the currentsheetindex is 0 then error "No sheet has a selected table."
-- GET THE TABLE WITH CELLS
tell sheet currentsheetindex
set the current_table to the first table whose selection range is not missing value
end tell
end tell
log current_table
tell current_table
set list1 to {}
add column after column (count of columns)
set z to (count of columns)
repeat with j from 1 to (count of rows)
set m to ""
repeat with i from 1 to (z - 1)
set m to m & value of (cell i of row j)
end repeat
set value of cell z of row j to m
end repeat
set MyRange to value of every cell of column z
repeat with i from 1 to (count of items of MyRange)
set n to item i of MyRange
if n is in list1 then
set end of list1 to "Delete"
else
set end of list1 to n
end if
end repeat
repeat with i from (count of items of list1) to 1 by -1
set n to item i of list1
if n = "Delete" then remove row i
end repeat
remove column z
end tell
end tell
Let me know how it works for y'all, it worked good on my machine, but I know localization is causing errors sometimes when I post things.
Thanks,
Jason
Message was edited by: jaxjason

Hi jason
I hope that with the added comments it will be clear.
Ask if something is always opaque.
set {current_Range, current_table, current_Sheet, current_Doc} to my getSelection()
tell application "Numbers09"
tell document current_Doc to tell sheet current_Sheet to tell table current_table
set list1 to {}
add column after column (count of columns)
set z to (count of columns)
repeat with j from 1 to (count of rows)
set m to ""
tell row j
repeat with i from 1 to (z - 1)
set m to m & value of cell i
end repeat
set value of cell z to m
end tell
end repeat
set theRange to value of every cell of column z
repeat with i from (count of items of theRange) to 1 by -1
(* As I scan the table backwards (starting from the bottom row),
I may remove a row immediately when I discover that it is a duplicate *)
set n to item i of theRange
if n is in list1 then
remove row i
else
set end of list1 to n
end if
end repeat
remove column z
end tell
end tell
--=====
on getSelection()
local _, theRange, theTable, theSheet, theDoc, errMsg, errNum
tell application "Numbers09" to tell document 1
set theSheet to ""
repeat with i from 1 to the count of sheets
tell sheet i
set x to the count of tables
if x > 0 then
repeat with y from 1 to x
(* Open a trap to catch the selection range.
The structure of this item
«class
can't be coerced as text.
So, when the instruction (selection range of table y) as text
receive 'missing value' it behaves correctly and the lup continue.
But, when it receive THE true selection range, it generates an error
whose message is errMsg and number is errNum.
We grab them just after the on error instruction *)
try
(selection range of table y) as text
on error errMsg number errNum (*
As we reached THE selection range, we are here.
We grab the errMsg here. In French it looks like:
"Impossible de transformer «class
The handler cuts it in pieces using quots as delimiters.
item 1 (_) "Impossible de transformer «class » "
item 2 (theRange) "A2:M25"
item 3 (_) " of «class NmTb» "
item 4 (theTable) "Tableau 1"
item 5 (_) " of «class NmSh» "
item 6 (theSheet) "Feuille 1"
item 7 (_) " of document "
item 8 (theDoc) "Sans titre"
item 9 ( I drop it ) " of application "
item 10 ( I drop it ) "Numbers"
item 11 (I drop it ) " en type string."
I grab these items in the list
{_, theRange, _, theTable, _, theSheet, _, theDoc}
Yes, underscore is a valid name of variable.
I often uses it when I want to drop something.
An alternate way would be to code:
set ll to my decoupe(errMsg, quote)
set theRange to item 2 of ll
set theTable to item 4 of ll
set theSheet to item 8 of ll
set theDoc to item 10 of ll
it works exactly the same but it's not so elegant.
set {_, theRange, _, theTable, _, theSheet, _, theDoc} to my decoupe(errMsg, quote)
exit repeat (*
as we grabbed the interesting datas, we exit the lup indexed by y.*)
end try
end repeat -- y
if theSheet > "" then exit repeat (*
If we are here after grabbing the datas, theSheet is not "" so we exit the lup indexed by i *)
end if
end tell -- sheet
end repeat -- i
(* We may arrive here with two kinds of results.
if we grabbed a selection, theSheet is something like "Feuille 1"
if we didn't grabbed a selection, theSheet is the "" defined on entry
and we generate an error which is not trapped so it stops the program *)
if theSheet = "" then error "No sheet has a selected table."
end tell -- document
(* Now, we send to the caller the interesting datas :
theRange "A2:M25"
theTable "Tableau 1"
theSheet "Feuille 1"
theDoc "Sans titre" *)
return {theRange, theTable, theSheet, theDoc}
end getSelection
--=====
on decoupe(t, d)
local l
set AppleScript's text item delimiters to d (*
Cut the text t in pieces using d as delimiter *)
set l to text items of t
set AppleScript's text item delimiters to "" (*
Resets the delimiters to the standard value. *)
(* Send the list to the caller *)
return l
end decoupe
--=====
Have fun
And if it's not clear enough, you may ask for more explanations.
Yvan KOENIG (from FRANCE mardi 27 janvier 2009 21:49:19)

How to select a row from duplicate set of records?

I want to select a row from a duplicate set of records.
below is the explanation of my requirement.
select * from test_dup;
COL_BILL     COL_SERV     COL_SYS
b1     s1     c
b1     s1     g
b1     s2     c
b1     s2     g
b2     s2     g
b2     s3     c
b2     s3     g
b3     s3     c
Here what I want is, for a distinct col_sys if col_bill and col_serv is same then I need the row where col_sys='c'
from the above result set I need the following:
b1     s1     c
b1     s2     c
b2     s3     c
I am using the following SQL query which is giving me the correct result set. But it will hamper the performance because there are total 45 columns in the table and total volume is around 50 million.
select * from test_dup where col_bill||col_serv in (
select col_bill||col_serv from (
select col_bill,col_serv,count(*) from test_dup
where col_sys in ('c','g')
group by col_bill,col_serv having count(*) >1)) and
col_sys='c';
Can anyone please provide me the optimize SQL query for the same.

Hi,
Another way,
SQL> with test_dup
as
     select 'b1' col_bill, 's1' col_serv, 'c' col_sys from dual union all
     select 'b1', 's1', 'g' from dual union all
     select 'b1', 's2', 'c' from dual union all
     select 'b1', 's2', 'g' from dual union all
     select 'b2', 's2', 'g' from dual union all
     select 'b2', 's3', 'c' from dual union all
     select 'b2', 's3', 'g' from dual union all
     select 'b3', 's3', 'c' from dual
select col_bill, col_serv, min(col_sys) col_sys
    from test_dup
   where col_sys in ('c', 'g')
group by col_bill, col_serv
having count( * ) > 1
     and count(nullif(col_sys, 'g')) > 0;
CO CO C
b1 s1 c
b2 s3 c
b1 s2 c
3 rows selected.Regards
Peter
Edited by: Peter on Feb 18, 2009 1:10 AM
- Added test data, thanks Karthick

Removing duplicate rows from SELECT

Hi, I was wondering if there was any way to remove duplicate rows from a select statement.
My table looks like this:
CREATE TABLE CUS_ID_TO_PC_ID (
CUSTOMER_ID VARCHAR2 (10) NOT NULL,
PC_ID VARCHAR2 (25) NOT NULL,
PASSWORD VARCHAR2 (25) NOT NULL,
REG_DATE DATE,
PRODUCT_DESC VARCHAR2 (25),
EXPIRE_DATE DATE,
SERIAL_NBR VARCHAR2 (12),
LDAP_USER VARCHAR2 (200),
COMMENTS VARCHAR2 (2000),
PC_ID_5_4 VARCHAR2 (25),
PC_ID_6_0 VARCHAR2 (25),
PASSWORD_5_4 VARCHAR2 (25),
PASSWORD_6_0 VARCHAR2 (25),
PC_ID_6_1 VARCHAR2 (25),
PASSWORD_6_1 VARCHAR2 (25),
OPERATING_SYSTEM VARCHAR2 (20),
STATUS VARCHAR2 (1)
Basically, I want to retrieve all columns from the table but remove all duplicate variations of
the pc_id/serial_nbr combinations.
For example, given this data:
PC_ID SERIAL_NBR CUSTOMER_NO
1234567 AAA C345
1234567 AAA C567
3333333 BBB C456
only the 1st and 3rd rows would be returned.
Any ideas?

Try something like this:
select * from your_table yt
where rowid in (select max(rowid)
from your_tabel yt2
where yt2.pc_id = yt.pc_id
and yt2.serial_nbr = yt.serial_nbr);

How can we select duplicate records from a table

Hi
I desire to use a query to select duplicate columns (based on all the columns of the table) ...
I am able to write queries which include column names, but when my table contains more than 50 columns, is it advisable for me to mention all the 50 column names in the query or is there any other query by which duplicate rows can be selected without column names being mentioned ?
Thnx in advance
Regards

Basic rule of relational design says that "thy table shalt have a primary key".
Now assuming that you do not have a primary key constraint and that resulted in duplicates, you should still have a couple of columns that uniquely describes a row in that table.
To select duplicate rows can then be done by joining rows with the primary key (same set of unique columns), where rows have different rowids (physical addresses).
E.g.
select
t1.*,
t2.*
from table t1,
table t2
where t1.col1 = t2.col1
and t1.col2 = t2.col2
and t1.rowid < t2.rowidIf you do not have a couple of columns (primary key) that uniquely identifies a row, then you do not have duplicates in the table - as there cannot be duplicates without having a means of unique identification.

When selecting a row from a view with a nested table I want just ONE entry returned

Does a nested table in a view "EXPLODE" all values ALWAYS no matter the where clause for the nested table?
I want to select ONE row from a view that has columns defined as TYPE which are PL/SQL TABLES OF other tables.
when I specify a WHERE clause for my query it gives me the column "EXPLODED" with the values that mathc my WHERE clause at the end of the select.
I dont want the "EXPLODED" nested table to show just the entry that matches my WHERE clause. Here is some more info:
My select statement:
SQL> select * from si_a31_per_vw v, TABLE(v.current_allergies) a where a.alg_seq
=75;
AAAHQPAAMAAAAfxAAA N00000 771 223774444 20 GREGG
CADILLAC 12-MAY-69 M R3
NON DENOMINATIONAL N STAFF USMC N
U
E06 11-JUN-02 H N
05-JAN-00 Y Y
USS SPAWAR
353535 USS SPAWAR
SI_ADDRESS_TYPE(NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NUL
L, NULL)
SI_ADDRESS_TAB()
SI_ALLERGY_TAB(SI_ALLERGY_TYPE(69, 'PENICILLIN', '11-JUN-02', NULL), SI_ALLERGY
TYPE(74, 'SHELLFISH', '12-JUN-02', NULL), SIALLERGY_TYPE(68, 'PEANUTS', '13-J
UN-02', NULL), SI_ALLERGY_TYPE(75, 'STRAWBERRIES', '13-JUN-02', NULL))
SI_ALLERGY_TAB()
75 STRAWBERRIES 13-JUN-02
*******Notice the allergy entry of 75, Strawberries, 13-JUN-02 at the
end. This is what I want not all the other exploded data.
SQL> desc si_a31_per_vw
Name Null? Type
........ Omitted uneeded previous column desc because of metalink
character limit but the view is bigger then this.......
DEPT_NAME VARCHAR2(20)
DIV_NAME VARCHAR2(20)
ADDRESSES SI_ADDRESS_TAB
CURRENT_ALLERGIES SI_ALLERGY_TAB
DELETED_ALLERGIES SI_ALLERGY_TAB
SQL> desc si_allergy_tab
si_allergy_tab TABLE OF SI_ALLERGY_TYPE
Name Null? Type
ALG_SEQ NUMBER
ALG_NAME VARCHAR2(50)
START_DATE DATE
STOP_DATE DATE
SQL> desc si_allergy_type
Name Null? Type
ALG_SEQ NUMBER
ALG_NAME VARCHAR2(50)
START_DATE DATE
STOP_DATE DATE

Can you explain what do you mean by the following?
"PL/SQL tables (a.k.a. Index-by tables) cannot be used as the basis for columns and/or attributes"There are three kinds of collections:
(NTB) Nested Tables
(VAR) Varrying Arrays
(IBT) Index-by Tables (the collection formerly known as "PL/SQL tables")
NTB (and VAR) can be defined as persistent user defined data types, and can be used in table DDL (columns) and other user defined type specifications (attributes).
SQL> CREATE TYPE my_ntb AS TABLE OF INTEGER;
SQL> CREATE TABLE my_table ( id INTEGER PRIMARY KEY, ints my_ntb );
SQL> CREATE TYPE my_object AS OBJECT ( id INTEGER, ints my_ntb );
/IBT are declared inside stored procedures only and have slightly different syntax from NTB. Only variables in stored procedures can be based on IBT declarations.
CREATE PROCEDURE my_proc IS
   TYPE my_ibt IS TABLE OF INTEGER INDEX BY BINARY_INTEGER; -- now you see why they are called Index-by Tables
   my_ibt_var my_ibt;
BEGIN
   NULL;
END;That sums up the significant differences as it relates to how they are declared and where they can be referenced.
How are they the same?
NTB and VAR can also be (non-persistently) declared in stored procedures like IBTs.
Why would you then ever use IBTs?
IBTs are significantly easier to work with, since you don't have to instantiate or extend them as you do with NTB and VAR, or
Many other highly valuable PL/SQL programs make use of them, so you have to keep your code integrated/consistent.
There's a lot more to be said, but I think this answers the question posed by Sri.
Michael

Select a row from a table and throw an url

Hi experts,
I'm trying to select a row from a table in Visual Composer. What I need to do it's to click over this row and throw an Url. At the moment, I've added a column with a Pushbutton with the formula to show the link; it works fine. But I need to do it without buttons just selecting the row.
Is there anyboby who knows about that?
Thanks a lot.
Belen

Hi
To do this you will have to use a data store and a guard condition on the line which is triggered by the select action. You need to store a value in the data store each time a select action is performed. The guard condition should check for this and only perform the action when the value in the data store is greater than 0.
Jarrod Williams

Select multiple rows from dual table

Is it possible to select multiple rows from dual table using a single select statement.
i.e., i want the out put to be
column_name
1
2
3
4
Edited by: vidya.ramachandra on Dec 14, 2009 8:24 AM

Aside from the fact you're responding to an old thread...
1002424 wrote:
While using CONNECT BY, I see it always leave behind one row.
Suppose I have a condition based on which I have to generate constant rows like
SELECT 1 FROM DUAL WHERE ROWNUM < N;
Here if N = 0, still it gives out single row.... you are obviously doing something wrong in your code elsewhere, because that SQL statement does not always return a single row...
SQL> SELECT 1 FROM DUAL WHERE ROWNUM < 0;
no rows selected
SQL>

Easy Question:Select many rows from a table and execute BAPI for these rows

Hi Experts,
I have created one WD project. The WD project fetches some records of backend using BAPI and displays in a table. I have to select some rows from the table and then execute BAPI for selected rows.
How I can select multiple records from the table and then execute another BAPI for selected rows.
Regards,
Gary

Hi,
In the Node which you binded to the table create one more attribute of type boolean.
For example your node is as below:
//Table Node
TableNode
> Att1
> Att2
> isSelected(boolean) - Newly created attribute for this requirement.
//Result Node contains the elements selected in TableNode
ResultNode
>Att1
>Att2
Now in the table create one more Column with Checkbox as tablecell editor. Now bind this boolean attribute to that check box.
Now in the code you can get the selected rows by user as below:
for(int i=0;i<TableNode().size();i++)
if(wdContext.nodeTableNode().getTableNodeElementAt(i).getIsSelected()==true)
    IPrivateTestView.IResultNode element=wdContext.createResultNodeElement();
    element.setAtt1(wdContext.nodeTableNode().getTableNodeElementAt(i).getAtt1());
    element.setAtt2(wdContext.nodeTableNode().getTableNodeElementAt(i).getAtt2());
   wdContext.nodeResultNode().addElement(element);
Regards,
Charan

Rerieve Duplicate Rows from a SELECT statement

Hi, I want to see all the duplicate rows from my SELECT statement. Looks like Oracle by default suppresses the duplicate rows. Here is my SQL statement.
I like to see all the 5 rows. Please help.
select a.partid, a.pdesc
from product a
where a.partid in ('10-30000-4',
'10-30000-4',
'10-30000-4',
'10-30000-4',
'10-30000-5')

Looks like Oracle by default suppresses the duplicate rowsSure no, if you have duplicate rows, Oracle will show you the dup rows.
Please, paste your data and the query result.
And this is no because you'll put multiple time the same condition that Oracle will show you multiple time the same row (in case of non-duplicate).
Nicolas.

Need to remove duplicate rows from a table

Hi Gurus ,
I am using oracle 11.2.0.3 .
SQL> desc osstage.S_EVT_ACT_X;
Name                                      Null?    Type
ROW_ID                                    NOT NULL VARCHAR2(15 CHAR)
LAST_UPD                                  NOT NULL DATE
PAR_ROW_ID                                NOT NULL VARCHAR2(15 CHAR)
ATTRIB_17                                          NUMBER(22,7)
ATTRIB_26                                          DATE
ATTRIB_02                                          VARCHAR2(100 CHAR)
PROCESS_TIMESTAMP                                  TIMESTAMP(6);
now when i give the below command it gives the error as someone has disabled the constraint accidently .
alter table s_evt_act_x enable constraint S_EVT_ACT_X_P1;
Error starting at line 3 in command:
alter table s_evt_act_x enable constraint S_EVT_ACT_X_P1
Error report:
SQL Error: ORA-02437: cannot validate (OSSTAGE.S_EVT_ACT_X_P1) - primary key violated
02437. 00000 - "cannot validate (%s.%s) - primary key violated"
*Cause:    attempted to validate a primary key with duplicate values or null
           values.
*Action:   remove the duplicates and null values before enabling a primary
           key.
Can you please guide me with this issue .

Please refer
Script: Deleting Duplicate Rows from a Table (Doc ID 31413.1)
How to Find or Delete Duplicate Rows in a Table (Doc ID 1004425.6)

Selecting duplicate rows from table

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