I want to delete the duplicate rows in a table without using ROWID.
I have the following data.
SNO SNAME SECTION
1 RAM A
2 SHYAM B
2 SHYAM B
3 KISHOR C
3 KISHOR D
4 RAMESH E
5 RAJESH F
5 RAJESH F
The Output Should be like this.
SNO SNAME SECTION
1 RAM A
2 SHYAM B
3 KISHOR C
3 KISHOR D
4 RAMESH E
5 RAJESH F
I want to delete the duplicate records from a table without using Below 2 methods:
1> delete from table_1 a where row_id not in (select min(row_id) from Table_1 b where a.PK=b.PK);
2> Insert into Table_2 select distinct * from Table_1;
Drop table Table_1;
Rename Table_2 to Table_1;
I having a problem with duplicate rows with a query.
What I have so far is
SELECT D.Student_Id,
E.Latest_Reg_Date,
E.Attendance_Count,
[Code].....
I am trying to delete duplicates from table without using rowid.
here is data:-
create table test(col1 number(3),col2 varchar2(20));
insert into test values(100,'rocky');
insert into test values(100,'rocky');
[Code]....
I know i am perfoming dml on view. IT wont allow me to perform DML on view which contain columns with expression. IS there any way to delete duplicates without using rowid?
how to select 1st record from duplicate vales in a table.
If we created one table with out primary key column In form in search block have uwi value and top_depth value when i enter uwi and top_depth value then when i click search button then it will display all values in master block.
but here duplicate values r there.
SQL> select rownum,uwi,top_depth,base_depth,test_start_date from well_pre_header;
ROWNUM UWI TOP_DEPTH BASE_DEPTH TEST_STAR
---------- ---------------- ---------- ---------- ---------
1 100 453.05 458.08 09-SEP-10
2 100 200 288 23-AUG-00
3 1001 200 289 25-AUG-01
4 1001 200 201 24-MAY-87
if uwi = 1001 and top_depth=200 and i will click search button it should be display 3 record & when i click next button then it will show 4th record.
In oracle 9i ........How to delete duplicate entries in a table ?
if suppose in a table named office, one or more entry(row) is repeated more then twice or minimum twice.
I need a query to delete the multiple entries ....
Note:
--->No constraints applied on the table.
--->No Primary Key
--->You cannot create any object....that is no view or a duplicate table can be created
I need to delete duplicate records from a table (indeed they are multiple duplicates).
Table Data
IDGroupQty
1KK30
1KK0
1KK19
2AA0
2AA30
3AA0
3AA30
3AA30
3AA9
My aim is to delete duplicates out of above data, with the below condtions.
1) first record with value 30 and then with value 0.
2) if there are 3 duplicate records ex: ID is 1 and Group KK, then i have to delete both 30 & 0 qty records.
3) If there are more than 3 duplicate records ex: ID is 3 and Group is AA, the i have to delete all the records with qty value either 30 or 0 and.
I have written a query like below.
SELECT id,
unit,
RANK ()
OVER (PARTITION BY id, unit
ORDER BY id, unit)
num
FROM temp;
with the above query, i am unable to mark this dynamic duplications.
How can i delete duplicate records from the table.
View 2 Replies View RelatedI have written this below code. The logic behind the code is, Delete the duplicate record from a table, and delete those record from other 7 table based on the SL_NUMBER.
But Problem is After delete the duplicate record When I have use Below statement
RETURNING SL_NUMBER BULK COLLECT INTO rec_sl_number;
This statement unable to return approx 40 Lakhs SL_NUMBER
DECLARE
rec_sl_number dbms_sql.number_table;
BEGIN
[Code]....
I have a table like this
table:
id name plan code
1 sam normal 5
1 sam normal 6
1 sam special 5
1 sam Special 6
I need to delete data in such a way that one entry with normal and one entry with special plan should remain and should be with different code. Does not matter whether normal stays with 5 or 6 code.
I tried with rowid but it deletes either both normal or both special or returns same code for normal and special.
how i can chk & delete duplicate rows from a table
View 3 Replies View Relatedhow to remove duplicate rows from table?
View 6 Replies View RelatedHow to retrieve duplicate rows from a table, suppose i don't know any column names. Without hard-coding column names I need to find.
View 5 Replies View RelatedI have one table in which I want to restrict some records from being inserted. I don't want to put any checked constraints. e.g. consider following table
transaction(
id number primary key,
txn_date timestamp(7),
payee varchar2(40),
amount number,
memo varchar2(40),
ref_num number
)
I want to write SQL which should not inset duplicate record.
e.g.
I have written one as bellow:
insert into transaction
select 1, to_date('2009-12-12','YYYY-MM-DD'), 'Payee1', 12, 'Test', 212 from dual where
(select count(*) from transaction where txn_date=to_date('2009-12-12','YYYY-MM-DD') and
payee='Payee1' and amount=12)=0;
Can I use exists/not exists, which query will be more appropriate. (Please consider that fields which I am using to filter out the duplicate transactions does not contain primary key.)
Can I write such SQL. Or do i check for duplicate rows one by one and then filter the duplicate records.
I am using the below proc to delete some records
1)select client_id,count(*) from TCLIENT_NOTIFICATION_PACK where client_id=1620560178 group by client_id order by 2 desc;
client_id count(*)
----------- ---------
16205601785128
2)select client_id, count(*) from TCLIENT_NOTIFICATION_PACK
where client_id=1620560178
group by client_id
having count(*) > 40
order by 2 desc
client_id count(*)
----------- ---------
16205601785128
3) select client_id,clnt_notification_pack_tid
-- bulk collect into v_client_id,v_notif_tid
from (select clnt_notification_pack_tid,
client_id,
clnt_notification_pack_typ_tid,
crte_dt,
[code]....
4) Iam using the below proc to delete the rows from table, except the 4 rows returned above
declare
v_clnt_notification_pack_tid TCLIENT_NOTIFICATION_PACK.CLNT_NOTIFICATION_PACK_TID%type;
tYPE t_client_id is table of TCLIENT_NOTIFICATION_PACK.client_id%type;
tYPE t_notif_tid is table of TCLIENT_NOTIFICATION_PACK.clnt_notification_pack_tid%type;
v_client_id t_client_id;
v_notif_tid t_notif_tid;
[code]....
5) After running this procedure, i shud see 5124 records, but i see zero records.
How to delete even rows of a table or rather alternate rows of a table.
View 31 Replies View RelatedI have a table, in that i have "n" no of rows from that i want to delete 1% of rows from that table
View 26 Replies View RelatedWhat would cause Oracle to insert duplicate rows into a table? Could a join of two tables in the initial query assigned to an application page cause ORacle to insert an extra row into a table when an update to data value occurs? I have no insert triggers and no foreign keys assigned to the table. I am not sure what would cause Oracle to assume that an insert of a row must occur. I want to prevent that insert.
View 9 Replies View RelatedI need to delete all the registers where the table 1 does join with table 2 in 3 fields... for example:
delete taba1 t1
where t1.campo1 in ( select distinct(tr.campo1)
from tabla1 tr,
tabla2 t2
where t2.error = 0
tr.campo1 = t2.campo1
and tr.campo2 = t2.campo2
[Code]...
I want to compare two tables , and delete the common rows from the first table
Here is what i have done :
Create table test1(Test1C1 Number,
Test1C2 varchar2(50));
Create table test2(Test2C1 Number,
Test2C2 varchar2(50));
Insert into test1 values(1,'testdata1');
Insert into test1 values(2,'testdata2');
Insert into test1 values(3,'testdata3');
[code].......
it deletes all the records from Table test1. What should I modify here ? or should I write a different query ?
The desired contents in table test1 will be
2 testdata2
4 testdata4
6 testdata6
8 testdata8
10 testdata10
I know how to select the last N sets of rows, using DENSE_RANK - where multiple rows have the same timestamp but I want to only select those rows which do NOT have the top 2 unique timestamps.
i.e.:
SELECT *
FROM ( SELECT DENSE_RANK() OVER (ORDER BY myTimestamp DESC) DENSE_RANK, HISTORYID, USER_ID, myTimestamp, STATUS, FROM TXN_HIST)
WHERE DENSE_RANK > 2 order by myTimestamp DESC, HISTORYID, USER_ID;
But how do I DELETE these same rows?
I joined the forum just today, i need some tips on deleting the millions of rows from a huge table having 25 millions of rows.
View 4 Replies View RelatedI have a requirement to delete duplicate records. For example,if the below query retrieves count of duplicate records along with the column values.
select col2,col3,col4,col5,col6,col7,count(*) from table
group by
col2,col3,col4,col5,col6,col7
having count(*) > 1;
I would like to retain only one record with max(col1) which is a surrogate key and other records should be deleted.How to retain one record in a duplicate record set based on max of certain column.
say I have duplicate records in TABLE3, can I use following SQL to delete the duplicates?FYI, BUS_FID is unique number column.
TABLE3
------------------------
ori_id*************id***********r_f_a****r_t_a*******bus_id
72840000040572*****740040572****255******267*********1
72840000040572*****740040572****255******267*********2
2840000040572******20040572*****25*******27**********3
7840000040572******70040572*****2********6***********4
DELETE FROM TABLE3 WHERE BUS_ID NOT IN (SELECT MIN(BUS_ID) FROM TABLE3 GROUP BY ORI_ID);
consider TABLE3 has millions of millions of data, say 40 millions.Update, I have tried it and it is very slow...
how to delete duplicated records from a table without using row_id. I found the duplicated rows from a table using Analytical Function. But i could not use the Analytical function in the where condition.
My table(tab2) Structure is
DEPTNODEPT_NAMEEMPIDSEXID1
107jadf 1F1
40asdf 55
10purchase 2M2
10sales 3M3
30HR 4F4
I found the Duplicate Record by using the query
with a as
(select deptno,dept_name,empid,sex,id1,row_number()over(partition by deptno order by deptno) rnum from tab2)
select * from a where rnum >1
how to delete duplicate record .
Created three tables and group by 3 tables column name. want to delete duplicate record without first table(test). Delete the duplicate record in test1 and test2 except test.
SELECT a as Name,b as M_Name, c as L_Name, count(*) FROM ( SELECT first_name as a, middle_name as b, last_name as c FROM test UNION ALL SELECT first_name as a, middle_name as b, last_name as c FROM test1 UNION ALL SELECT first_name as a, middle_name as b, last_name as c FROM test2 ) as countGROUP BY a,b,cHAVING count(*) > 1
I just want to know that "is it safe to select a columns using ROWID in a table?"
View 3 Replies View RelatedI have to eliminate duplicate pairs from the following data set.
for ex. Adney Vaughan and Berkly Wassen appears in both AG1 and AG2. how can i get rid of these repititive rows?
AG1 ----------- AG2
Acton Wibert ---- Currier Barhydt
Adney Vaughan --- Luella Edmund
Adney Vaughan --- Berkly Wassen
Alden Anstruther --- Courtney Gavet
Ashley Alvord --- Saunders Buel
Aswin Wilbraham --- Dale Cooper
Barnum Sears --- Grayson Lightfoot
Berkly Wassen --- Luella Edmund
Berkly Wassen --- Adney Vaughan
Bersh Musgrave --- Derward Knight
Berthilda Darrell --- Broderick Reynold
Broderick Reynold --- Berthilda Darrell
getting sql query to get the result below.If the Key repeats then I need to set it to O if for each key New_link doesnot match.
My Present table
Key New_Link
1 4
3 2
3 5
5 1
5 1
RESULT
Key New_Link
1 4
3 0
5 1
removing duplicate rows from a table.
We have the following table:
SSD@ermd> desc person_pos_history
Name Null? Type
------------------------------------------------------------------------ -------- ------------------------
PERSON_POSITION_HISTORY_ID NOT NULL NUMBER(10)
POSITION_TYPE_ID NOT NULL NUMBER(10)
PERSON_ID NOT NULL NUMBER(10)
EVENT_ID NOT NULL NUMBER(10)
USER_INFO_ID NUMBER(10)
TIMESTAMP NOT NULL DATE
We found out that few person_id's are repeating for a particular event (3):
select PERSON_ID, count(*)
from person_pos_history
group by PERSON_ID, EVENT_ID
having event_id=3
and count(*) > 1
order by 2
PERSON_ID COUNT(*)
---------- ----------
217045 356
216993 356
226198 356
217248 364
[Code]...
If we look at the 1st person id "217045", we can see that it is repeating 356 times for event id 3.
SSD@ermd> select POSITION_ASSIGNMENT_HISTORY_ID, POSITION_TYPE_ID, PERSON_ID,EVENT_ID, to_char(timestamp, 'YYYY-MM-DD HH24:MI:SS')
2 from person_pos_history
3 where EVENT_ID=3
4 and person_id=217045
5 order by timestamp;
PERSON_POSITION_HISTORY_ID POSITION_TYPE_ID PERSON_ID EVENT_ID TO_CHAR(TIMESTAMP,'
------------------------------ ---------------- ---------- ---------- -------------------
222775 38 217045 03 2012-05-07 10:29:49
222774 18 217045 03 2012-05-07 10:29:49
222773 8 217045 03 2012-05-07 10:29:49
[Code]...
356 rows selected.It is safe to assume that the person id/event id with the earliest timestamp is the one that was loaded 1st, hence, the one we want to keep and the rest should be deleted.
sql to achieve the duplicate removal.