How to combine both values and subquery in the insert statement

Question

Hi everybody,
This is a case of inserting rows into a final results table from a temporary one. Actually, one of the fields is not always given in the temporary table. Thus, when inserting the rows into the final results table, an error message comes up to.
More clarification:
final results table(F_RESULT): field1, field2, field3 ( they are also primary keys with not null constraint)
temporary table(TEMP): field2, filed3
Is it possible to combine both values and subquery branchs of the insert statement:
Insert into F_RESULT (field2,field3) select field2,field3 from TEMP;
Insert into F_RESULT (field1) values (0);
into only one like this:
Insert into F_RESULT (field1,field2,field3) values (0, select field2 form Temp, select field3 from Temp);
Or there is another more effective solution. The main problem for me is the message that doesn't accept the null value. From the data integrity point of view, it is accepted to set field1 to zero.
Any hints?
Thanks for your reply.

Answer 1

That's easy, you can select any value from a table:
Insert into F_RESULT (field1,field2,field3)
select 0, field2, field3 from Temp;