Try below sample code
select t1~f1
f2
f3...
from <Table1> as t1 join <table2> as t2 on t1~f1 = t2~f1 into corresponding fields of table <internal table>
where <condition>.
t1-->alias name for table1.
t2-->alias name for table2.
Thanks and Regards,
Rajkumar Parthipan.