Question

I have a table that looks like this

Id  FirstName
5   Adam
6   Bob
8   Bob
5   Carl
5   Dewie
8   Ernest

When two rows have the same Id, I’d like to keep only one of them. On this example, I would obtain

Id  FirstName
5   Adam
6   Bob
8   Bob

Is there concise command to that? I was thinking of

SELECT * FROM Persons HAVING(COUNT(Id)=1)

or

SELECT DISTINCT(Id), FirstName FROM Persons

but my syntax isn’t correct.

Answer 1

Hope you are looking for this::

SELECT * from Persons GROUP BY Id