how to combine two select sql statement? : ---- SELECT b.subCusNo, c.companyName as [Subsidiary],b.equityInterest,b.relation from  cusparentsub b ,customerdetails c where b.subcusNo=c.custNo 
 ----SELECT  b.parentCusNo,c.companyName as [Parent Company],b.equityInterest, b.relation FROM cusparentsub b ,customerdetails c where b.parentcusNo=c.custNo.

Above is  two sql statement. is it possible to join the select statement and the output will be in a table with subcusno,companyname,parentcusno,companyname,equityinterest and relation data?

thank you