Insert into, select and where statement combined

Question

How to insert record from Table A to Table B based on the conditions in Table C.

Table A:

ID  Name   DateFrom   DateTo
1   Alex   22-7-2015  26-7-2015
2   Alice  21-8-2015  25-8-2015

Table C:

ID  Quarter   DateFrom   DateTo
1   Quater 1  1-7-2015  31-7-2015
2   Quater 2  1-8-2015  31-8-2015

If the records from Table A is between the date range in Table C. It will insert into a new Table B.

Redemption is Table B

insert into redemption(staffID,staffName,department,pointsAccumulated,referrerID) 
select referrerStaffID,referrerName,referrerDepartment,SUM(points),activeDirectoryID 
FROM referral 
WHERE NOT EXISTS (select * from redemption1 where referrerID=activeDirectoryID) group by activeDirectoryID;

Answer 1

Try this

Insert into tableB(Id,name,datefrom,dateto)
select t1.Id,t1.name,t1.datefrom,t1.dateto from tableA as t1 
inner join tableC as t2 on t1.id=t2.id 
where 
t1.datefrom between t2.datefrom and t2.dateto or 
t1.dateto between t2.datefrom and t2.dateto

Answer 2

You can use the below query

insert into tableB(id,name,datefrom,dateto)
select A.id,A.name,A.datefrom,A.dateto from tableA A join tableC C 
                       on A.id=C.id 
      where TO_DATE(A.datefrom,'DD-mm-yyyy') 
            between TO_DATE(C.datefrom,'DD-mm-yyyy') and TO_DATE(c.dateto,'DD-mm-yyyy')
      and TO_DATE(A.dateto,'DD-mm-yyyy') 
            between TO_DATE(C.datefrom,'DD-mm-yyyy') and TO_DATE(c.dateto,'DD-mm-yyyy')

Please check the answer here SQL Fiddle