How to remove duplicate rows from a table?.
Answers were Sorted based on User's Feedback
Answer / vamsi
for example our emp table have duplicate rows than we can
run this query to delete those duplicate rows
Delete from emp a
where rowid <> ( select max(rowid) from emp where empno =
a.empno);
| Is This Answer Correct ? | 13 Yes | 4 No |
Answer / lova raju allumalla
delete from emp where rowid not in (select min(rowid) from
emp group by empno);
| Is This Answer Correct ? | 7 Yes | 2 No |
Answer / karthik
with [dup_cte] as {
select row_number(partition by eid order by eid) as rn from emp}
go
delete from [dup_cte] where rn>1
| Is This Answer Correct ? | 0 Yes | 0 No |
What is interval partition?
hi..........i m Accenture employee...Accenture is an IT company having itz branches in India at Mumbai, Pune,Delhi, Hyderabad, Chennai and Bangalore....Presently there are openings here for SAP, Testing, Oracle,Java,.NET,MAinframe and Peoplesoft...... I am a software engineer working with Accenture,Mumbai....u can mail me in your resume..i`ll forward it to our HR team...my mail id: pankit.lodaya@accenture.com
If records are inserted into table without committing.How to refer to these values in a procedure?
How do I trace sql profiler?
Explain dml and ddl?
What is dbo in sql?
What are sql ddl commands?
what is the difference between where clause and having clause? : Sql dba
how do you tune the slow running queries in oracle db , explain the methodology
What is the difference between python and sql?
What is union, minus and interact commands?
What is sqlite format?
Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)