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?
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 have data some thing like this.
NO NAME LOC SAL
------------------------------------------------------------------
1 A HYD 100
2 B BGL 200
1 A HYD 200
1 A HYD 150
I want to delete duplicate records (group by no,name,loc) but only max(qty) record should be retained. So I need output like this.
NO NAME LOC SAL
------------------------------------------------------------------
1 A HYD 200
2 B BGL 200
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 just want to know that "is it safe to select a columns using ROWID in a table?"
View 3 Replies View RelatedI am a developer and not a DBA and I need to find th correct query to find the exact rowid of the record locked on a table. This is for a RAC database and locked record can be from the web form in oracle application server. When I try to get the correct row id, I get the following error:
ORA-01410 - Invalid row id For the criteria, the output is Dbms_Rowid.rowid_create(1, -1, 36, 7845, 0), why I get a -1 for the ROW_WAIT_OBJ#?
Additional Information: The lock type is DML and the lock mode is: Row Exclusive, the table is locked and the program is web oracle forms executing.
I am executing the query in Oracle Database 11g Enterprise Edition Release 11.1.0.7.0
How to accomplish getting the correct rowid? Below is the selection criteria I have:
select vs.inst_id,
vs.audsid audsid,
locks.sid sid,
[Code]....
I've a query like
update tab1
set col1 = ( select col2 from
tab2
where tab1.id = tab2.id) table 1 has arnd 10,000 rows
table 2 has arnd 1,700,000 rows and has a primary key on column id.This query is taking around 20 secs to execute. I checked the x-plan and most of time taken for table access by index rowid.I checked the stats for the tab2, its just three days old.
In MS Windows, if I copy a file and paste it into the same folder, I get a copy with the text 'Copy of' in front of the file name. If I paste it again, I get another copy with a different version number.
E.g.
sqlnet.log
Copy of sqlnet.log
Copy (1) of sqlnet.log
Copy (2) of sqlnet.log
I was wondering if I could copy existing rows into a table and do the same thing?
So, for example if I had this table:
create table tst_srch (srch_is varchar(100), user_name varchar(100), srch_name varchar(100));
insert into tst_srch values (1,'USER1','SRCHA');
insert into tst_srch values (2,'USER1','SRCHB');
insert into tst_srch values (3,'USER1','SRCHC');
insert into tst_srch values (4,'USER1','SRCHD');
insert into tst_srch values (5,'USER2','SRCHC');
insert into tst_srch values (6,'USER2','SRCHD');
insert into tst_srch values (7,'USER2','SRCHD_1');
Could I write a procedure like copy_searches('USER1','USER2') that would copy all USER1's searches to USER2 - including renaming any duplicates.
So it would create these new rows:
8,USER2,SRCHA
9,USER2,SRCHB
10,USER2,SRCHC_1
11,USER2,SRCHD_2
I've looked at various insert statements, merge and match statements and exception handling in procedures .
I am exporting using query parameter. I am trying to export subset of table using rowid.
SQL> select rowid , name from tab1;
ROWID NAME
------------------ ---------------
AAAM0rAAEAAAAGMAAA sam
AAAM0rAAEAAAAGMAAB sona
AAAM0rAAEAAAAGMAAC rose
AAAM0rAAEAAAAGMAAD chris
AAAM0rAAEAAAAGMAAE san
.................. ....
.................. ....
command given as
exp sam/sam tables=tab1 file=exprwid.dmp query="where ROWID='AAAM0rAAEAAAAGMAAA'" log=log1.log
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses WE8ISO8859P1 character set (possible charset conversion)
About to export specified tables via Conventional Path ...
. . exporting table TAB1
EXP-00056: ORACLE error 911 encountered
ORA-00911: invalid character
Export terminated successfully with warnings.
how can i export this record ?
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.
These are the tables I'm working with:
SQL> desc custinfo;
Name Null? Type
----------------------------------------- -------- ----------------------------
CUSTID VARCHAR2(4)
CUSTNAME VARCHAR2(18)
CUSTADR VARCHAR2(12)
CUSTCITY VARCHAR2(10)
CUSTSTATE CHAR(2)
CUSTZIP VARCHAR2(5)
CAPACITY NUMBER(3)
HOUSECODE VARCHAR2(2)
[code]...
I don't understand why the custid is the same for each customer, and why it's selecting every customer and not just those with more than 150 gallons ordered.
For this one use the oil tables that you set up and use a subquery. Select the minimum average fall use from the house table. Then show all customers whose number of gallons delivered times two is greater than the minimum.
I am running the following delete query and it has been running for over 2hrs:
delete from dw.ACCOUNT_FACT
where rowid in
(select rowid from DW.ACCOUNT_FACT
minus
select max(rowid) from DW.ACCOUNT_FACT
[Code]..
Here is the explan plain result:
explain plan for delete from dw.ACCOUNT_FACT
where rowid in
(select rowid from DW.ACCOUNT_FACT
minus
select max(rowid) from DW.ACCOUNT_FACT
group by CRTORD_FIPS_CD, LAST_PAYMENT_DT, ORDER_NUM,
[Code]....
PLAN_TABLE_OUTPUT
Plan hash value: 611392786
----------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
----------------------------------------------------------------------------------------------------------------------
| 0 | DELETE STATEMENT | | 2604G| 260T| | 9018K (91)| 30:03:37 |
| 1 | DELETE | ACCOUNT_FACT | | | | | |
|* 2 | HASH JOIN | | 2604G| 260T| 369M|
[Code].....
Predicate Information (identified by operation id):
---------------------------------------------------
2 - access(ROWID="$kkqu_col_1")
I have all constraints disabled. How do I make this delete finish faster? We're trying to remove duplicates from this table using the criteria giving in the statement.
Let's consider such table that all rows fit into single block:
SQL> create table test as select rownum id, '$'||rownum name from dual connect by level <= 530;
Table created.
SQL> create index i_test on test(id);
Index created.
SQL>
SQL> begin
[code].....
why does approach with full scan take longer even if table occupies only one data block? PS. 11gR2
I have complied while doing my oracle stuff.
1. When do you use a rowID?
2. if you have this:
alter table shopowner.jobs
add constraint uk_salary
unique (min_salary, max_salary);
insert into shopowner.jobs
values (3, 'dba', 20002,55000, 'jobs');
Why does the above constraint not fail when one of these columns are not unique? It needs to fail both to fail the constraint.
3. what is a transaction? and how do you do it? how does deferred transaction look like?
4. How do you view constraints through isqlplus?
5. How do you drop multiple constraints at once?
6. When would you not use cascading delete?
7. How do you use create like cmd in enterprise Manger? I keep getting this error Failed to
commit: ORA-02264: name already used by an existing constraint even if you delete every constraint or rename ever constraint to anything.
8. how to make comments in isqlplus?
9. how do you add multiple insert values in at once in isqlplus?
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.
I want to delete the duplicate rows in a table. there is no column which can be used to differentiate between the rows.
SELECT column_name1
FROM [table]
WHERE column_name2 = cond
GROUP BY column_name1
HAVING COUNT (column_name1) > 1
from the above query i can find the duplication in the table and can delete through it. But what i want one record of each duplication not to be deleted most probably the record added last to the table.
delete table if exist
How do we write this code in oracle / sqlplus
How to delete even rows of a table or rather alternate rows of a table.
View 31 Replies View RelatedDeclare
Cursor Cur_Emp Is
Select Empno,Ename
From Emp;
Type Type_Emp Is Table Of Cur_Emp%Rowtype Index By Binary_Integer;
[code].......
I 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 RelatedI have tried the following delete statement but it is taking long time,and it's not giving any result.
DELETE FROM hs_table WHERE sno=1234 and effdt='25-MAY-10';
The records in the table are 90000.And we are deleting only one report.
I am trying to schedule a store procedure and wanted to remove some data from a table starting from a date and increase the delete by day until a specified date. I wrote the below function; but i can't get to work.
--Start
CREATE OR REPLACE FUNCTION remove_DateField return VARCHAR2 IS
i PLS_INTEGER;
startdate Date ;
endDate Date;
currentDate Date;
stopDate Date;
[code]....
I'm looking for a way to select 25% of a view.. I need to do this four time to get all the data. The size of the view changes constantly (I need to split my select because of heavy load on an application)
something like this:
Select * from MyView where [some condition that makes only 0-25% show ]
Select * from MyView where [some condition that makes only 25-50% show ]
Select * from MyView where [some condition that makes only 50-75% show ]
Select * from MyView where [some condition that makes only 75-100% show ]
I tried to search in the forum but found nothing.. maybe ROWID could be used to accomplish this somehow?
CREATE TABLE CD_TRANS_GLIDE
( "TRANS_GLIDE_ID" CHAR(32) NOT NULL ENABLE,
"CARD_SEQ_NO" CHAR(10),
"SUBACCOUNT_NO" VARCHAR2(10),
"CASH_FLAG" CHAR(1),
[code]....
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 have 1000+ tables in a DISCOVER tablespace in 10g.
I need to drop ALL tables in this area and leave the tblsp intact so that I can IMP a data update from 9i (prod) into 10g (test).
Is there an easy cmd to drop all the tbls, or am I missing someway to do this in DB Console for 10g.
Is there a SQL query to find out the redundant or unused table in Oracle.
Some tables shows no dependencies to itself or other schemas,but has got valid data in it, deleting it will affect the functionality of the system.
I have a parent table and child table. I want a row to be deleted from the parent table which is referenced by a child row. Is there a way to achieve this. I dont have permission to re create the table or alter the table using delete cascade option. Is there a way to do it in sql.
SQL> create table t1(a number primary key, b number);
SQL> create table t2(c number, d number references t1(a));
SQL> insert into t1 values(1,2);
SQL> insert into t1 values(2,3);
SQL> insert into t1 values(3,4);
SQL> insert into t2 values(10,3);
SQL> insert into t2 values(20,2);
SQL> delete from t1 where a=2;
delete from t1 where a=2
*
ERROR at line 1:
ORA-02292: integrity constraint (CISBATCH.SYS_C00763501) violated - child
record found
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 to delete Parent table records without affecting to child table dependent records?..
View 5 Replies View Related
