Question

i have a table like this

ID     nachname     vorname
1       john         doe
2       john         doe
3       jim          doe
4       Michael     Knight

I need a query that will return all the fields (select *) from the records that have the same nachname and vorname (in this case, records 1 and 2).
Can anyone help me with this? Thanks

Answer 1

The following query will give the list of duplicates :

SELECT n1.* FROM table n1
inner join table n2 on n2.vorname=n1.vorname and n2.nachname=n1.nachname
where n1.id <> n2.id

BTW The data you posted seems to be wrong “Doe” and “Knight” are a lastname, not a firstname :p.