How to find out duplicate records in a table(Query)

Answers were Sorted based on User's Feedback



How to find out duplicate records in a table(Query)..

Answer / vishal

try this query

select name,count(*) from X1 (X1 being the table name)
group by name
having count(*)>1

Is This Answer Correct ?    12 Yes 2 No

How to find out duplicate records in a table(Query)..

Answer / madhav

select name,count(name) from mastertable group by name
having count(name)>1

instead of NAME use your own fields


Best of luck

Is This Answer Correct ?    7 Yes 1 No

How to find out duplicate records in a table(Query)..

Answer / santosh

we have to use the group by with having command to get the duplicate values. this query shall show the result of only the users have duplicate values in the employee table.

Syntex:
Select columnName From Table_name
Group By columnName
Having count (*) > 1

Example:
SELECT UserID FROM employee
GROUP BY userid
HAVING count( * ) > 1

Is This Answer Correct ?    4 Yes 0 No

How to find out duplicate records in a table(Query)..

Answer / deepika galankar

if table " stud " contains data :
studid name
1 xyz
2 pqr
3 per
1 xyz

then query is

select name ,count(name) from stud
group by name
having count(name)>1;

thank u .

Is This Answer Correct ?    3 Yes 2 No

How to find out duplicate records in a table(Query)..

Answer / lakshmanlal

hi gud evening all, this is lakshmanlal.k.
suppose my table EMP having one column like ENAME in that i
am having 5 values like lakshman,lakshman,siva,rajesh,kiran
now i am writing query for duplicate records
select ename from EMP(tablename)
group by ename
having count(ename)>1

Is This Answer Correct ?    0 Yes 1 No

How to find out duplicate records in a table(Query)..

Answer / sekhar

select records from table where count(record)>1

Is This Answer Correct ?    0 Yes 4 No

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