This is just for reference. I forgot the syntax already twice. The insert query does not work if you use parenthesis.
create table test ( a int , b int) ;
create table test1 ( c int) ;
insert into test1 values 1;
insert into test1 values 2;
insert into test1 values 3;
insert into test1 values 4;
insert into test (a,b) select c,0 from test1;
select * from test;
1|0
2|0
4|0
3|0