SELECT T2.name FROM assignedto AS T1 JOIN scientists AS T2 ON T1.scientist  =  T2.ssn
Find the name of scientists who are assigned to some project.
create table Scientists (
  SSN int,
  Name Char(30) not null,
  Primary Key (SSN)
);
Create table Projects (
  Code Char(4),
  Name Char(50) not null,
  Hours int,
  Primary Key (Code)
);
create table AssignedTo (
  Scientist int not null,
  Project char(4) not null,
  Primary Key (Scientist, Project),
  Foreign Key (Scientist) references Scientists (SSN),
  Foreign Key (Project) references Projects (Code)
);
INSERT INTO Scientists(SSN,Name) 
INSERT INTO Projects ( Code,Name,Hours)
INSERT INTO AssignedTo ( Scientist, Project)