sql jdbc getgeneratedkeys returns column “id” not found, column type unknown

Question

I want to retrieve the most recently updated value in the table using an insert query.

these are the datatypes in my sql table.

Datatype:

Answer 1

You need to call rs.next():

int autoIncKeyFromApi = -1;
rs = stmt.getGeneratedKeys();
if (rs.next()) {
    autoIncKeyFromApi = rs.getInt(1);
} else {
    // do what you have to do
}
System.out.println(autoIncKeyFromApi);

Answer 2

Maybe it's because that the sqlQuery doesn't create any new record! In this case, it will return an empty ResultSet Look at the specification of getGeneratedKeys()