if 3 duplicate records in a table,i want to delete 2 duplicate
records by keeping 1 duplicate and 1 original as it is,how?
Answers were Sorted based on User's Feedback
Answer / mohamed zunu
create table sampletbl(id int,name varchar(100))
insert into sampletbl values(1,'aa')
insert into sampletbl values(1,'aa')
insert into sampletbl values(1,'aa')
with cte as(
select ROW_NUMBER() over (partition by id order by id) as r_no,* from sampletbl)
delete from cte where r_no>1
select * from sampletbl
Is This Answer Correct ? | 9 Yes | 1 No |
Answer / siva raman
By using Rank function we can delete duplicate records in
tables.
Is This Answer Correct ? | 6 Yes | 3 No |
Answer / amol maske
DELETE FROM tablename WHERE ROWID NOT IN(
SELECT MIN(ROWID)FROM tablename GROUP BY columnname);
Is This Answer Correct ? | 5 Yes | 4 No |
Answer / dhananjay
The simplest way to eliminate the duplicate records is to
SELECT DISTINCT into a temporary table, truncate the
original table and SELECT the records back into the original
table. That query looks like this:
select distinct *
into #holding
from dup_authors
truncate table dup_authors
insert dup_authors
select *
from #holding
drop table #holding
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / arun ashok
STEP 1 : Insert distinct value in the one new table.
STEP 2 : Delete the values from existing table.
STEP 3 : Again insert the values from new table to existing
table.
Is This Answer Correct ? | 0 Yes | 1 No |
Explain sp_configure commands, set commands?
Does a full backup include transaction log?
what is the query and condition to delete datas in sql server.
What is transaction server distributed transaction?
what is the difference between Delete and Truncate
4 Answers CarrizalSoft Technologies, Geo Research Centre,
Do you know what is raid and what are different types of raid configurations? : SQL Server Architecture
What are the essential components of sql server service broker?
how many non clustered index in sql server 2008,2010,2012
How to delete existing triggers using "drop trigger"?
what is the maximum size of a row? : Sql server database administration
sql server syntax to add "!" sign to "name" field of "employee" table in a manner that all names have the same lenght of 20 characters
What is difference between materialized view and view?