how to select duplicate record from a table?

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April 27th, 2004, 05:10 AM

joyce

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how to select duplicate record from a table?

how to select only dupliate record from a table??

for eg. i want to select records that have same duplicate id in table A.

how can i do tat?

April 27th, 2004, 07:45 AM

swampBoogie

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Code:

select id from A group by id having count(*) > 1

April 27th, 2004, 07:58 AM

shafique

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Here is an example on the world most popular table EMP. Try it.

SELECT * FROM emp a
WHERE rowid = (SELECT max(rowid) FROM emp
WHERE empno = a.empno
GROUP BY empno
HAVING count(*) >1)

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