Counting duplicate records in a table

Question

Hi,
I have to display duplicate records in a table,but the table name and column should be passed dynamically(In procedure). Please let me know the query for this.

Answer 1

Try this one, is used to find the duplicate value from table
Type: I
SELECT * FROM employees e1 WHERE rowid> (SELECT min(rowid)
FROM employees e2 WHERE e1.department_id=e2.department_id);
Type: II
SELECT * FROM my_table t1 WHERE EXISTS (SELECT 'x' FROM my_table t2
WHERE t2.key_value1 = t1.key_value1
AND t2.key_value2 = t1.key_value2
AND t2.rowid > t1.rowid);
Type: III
SELECT count(*), empn FROM empmast_dum
GROUP BY empn HAVING count(*) >1 ORDER BY empn;
Type: IV
SELECT dep, name,net,RANK() OVER (PARTITION BY dep ORDER BY net) rank
FROM empmast_dump
WHERE dep=04;
Type: V
SELECT empn FROM empmast_dump
WHERE empn NOT IN(SELECT MIN(empn)
FROM empmast_dump GROUP BY NAME;
I have to display duplicate records in a
table,but the table name and column should be passed
dynamically(In procedure). Please let me know the
query for this.When you need to pass table name dynamically in your procedure ,
just enter table name as substitution variable or bind variable, if u want to know about
this, read here
venki
http://venki-hb.blogspot.com/2008/02/basic-sql-query-tips.html