Retrieve serial ID with Npgsql when inserting with ExecuteScalar

Question

I\'m trying to insert a row into a PostgreSQL table with a serial primary key and I need to retrieve this column after it was inserted. I got something like this:

Th

Answer 1

insert into pais(nombre, capital) values(@nombre, @capital) RETURNING id

replace id with your primary keyenter code here and use

Object res = query.ExecuteScalar();

Inside res you'll have the PK.