SQL & PL/SQL :: Delete Duplicate Records Using Analytical Function
Dec 22, 2012
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 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.
I'm posting below test case in which I'm not able to understand output for LAST_VALUE function. I'm expecting maximum value for the salary in a department. Because I'm partitioning by department and ordering a partition as assending so being last value it should give me maximum value within a partition i.e. department in this case.
CREATE TABLE TEST1 (AGG_DATE DATE, COL1 NUMBER(9), COL2 NUMBER(9), COL3 NUMBER(9)); Here is the test-data population script: insert into TEST1 (AGG_DATE, COL1, COL2, COL3) values (to_date('01-01-2012', 'dd-mm-yyyy'), 1, 1, 1); [code]....
The problem is when I wrote an analytical query, it is giving the BEGIN_DATE and END_DATE by taking all the partition values together and so instead of the values above, it is creating an answer as follows:
I need to calculate the sum of values over a period of exactly one month (including the current row). Now if I use a windowing clause of "range between interval '1' month preceding and current row", the total period length is 1 month plus one day (being the day in the current record).
Basically, I want to sum over a period starting at "add_months(startdate, -1) + 1" up until startdate of each row.
drop table window_tst; create table window_tst ( id number primary key
[Code]....
So instead of having 01-feb going back to 01-jan, it should only include 02-jan till 01-feb
I could of course recalculate the period length back to a number of days for each row, but that is not really what I would prefer, as it would make the code rather unreadable.
I want to use Analytical function instead of group by clause for below query..
select CASE WHEN ADMT.SOURCESYSTEM ='CLU' THEN COUNT(ADMT.TOTAL_COUNT)*5 ELSE COUNT(ADMT.TOTAL_COUNT) END TOTAL_COUNT from ESMARTABC.ABC_DRVR_MFAILS_TMP ADMT group by ADMT.SOURCESYSTEM
I have to write a procedure that accepts schema name, table name and column value as parameters....I knew that i need to use metadata to do that deleting manually.
I have written the following PL/SQL procedure to delete the records and count the number of records has been deleted.
CREATE OR REPLACE PROCEDURE Del_emp IS del_records NUMBER:=0; BEGIN DELETE FROM candidate c WHERE empid in (select c.empid from employee e, candidate c where e.empid = c.empid and e.emp_stat = 'TERMINATED' ); [code]....
I 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.
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 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
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.
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 have table with name, count, flag with dublicate records
example
with swayam name , counts are 3, 4 with ramana name, counts are 5,5 with reddy name, counts are 1,2,3
i want to update the flag
if count are same then update one of record (flag='A') and other should be flag='R' if count are different then update the max count (flag='A') and other should be reject remaing (flag='R'). use below quires
CREATE TABLE TEST_DUB ( NAME VARCHAR2(99), V_COUNT NUMBER, FLAG VARCHAR2(1));
Insert into TEST_DUB (NAME, V_COUNT) Values ('SWAYAM', 3); Insert into TEST_DUB (NAME, V_COUNT) Values
for one particular employee, he is having multiple records with the same data in the table
EMPNO ENAME JOB SAL DOB ------------------------------------------------------- 1 A X 100 1956 2 B Y 200 1974 1 A X 100 1956 3 C Z 300 1920
[Code]....
like this am having multiple times the duplicates.
I have written the below query to delete the duplicate records. But it is deleting only one record (if we have 5 duplicates it is deleting only 1 ). But I am looking to delete if we have 5 duplicates need to delete 4 duplicates and keep 1 record in the table.
query which am using to delete the duplicates is
DELETE FROM Table1 a WHERE ROWID IN (SELECT MAX(ROWID) FROM Table2 b WHERE a.ID = b.ID);
it is deleting only one row but I want to delete 4 records out of 5 and keep one record.
The requirement is I have a table (TAB1), wherein I have 3 columns, ID, LID and STATUS.
The value in ID column = ID_SEQ.NEXTVAL,and LID will be either 0 or 1 and the possible values for STATUS are 'ED','CP', NULL. The ID column is not suppose to have duplicate values, but there is no check on the table for the same.
Someone has updated the existing data and ID column is containing duplicate values. Wherever LID = 0 and STATUS = NULL and if only if ID is duplicated then the ID_SEQ.NEXTVAL has to be assigned to ID field, so that there are no more duplicate values.
CREATE TABLE tab1 (id NUMBER , lid NUMBER, status VARCHAR2(10));
Existing Data ------------------ INSERT INTO tab1 VALUES (1,0, 'ED'); INSERT INTO tab1 VALUES (1,0, 'CP'); INSERT INTO tab1 VALUES (1,0, NULL); INSERT INTO tab1 VALUES (1,0, NULL); INSERT INTO tab1 VALUES (1,0, NULL); INSERT INTO tab1 VALUES (1,0, NULL);
how to display the data which is shown below without duplicate records in compid and compname and all policy_id's should be there while excuting this query iam getting this data.
select distinct comp_id as compid, comp_disp_name as company, plcy_id as policyid,
19734 Save the Children 9013 GPA 19734 Save the Children 9012 GMC 20097 JMT 9486 GTL 10890 Steelco Gujarat Ltd. 9727 CAR 17330 Golden Jubilee Hotels Limited 8915 CGL 23117 NBHC 9093 GMC 17542 Heinz India 10693 Fire 19821 KSK Fabricators 10341 D&O 3769 Jones Lang Lasalle India 9199 WC 19821 KSK Fabricators 10340 WC
