How to mention column names in LIKE clause ?

Question

Hi.
i need a query like this. is it possible ?
select * from tableA inner join tableB on a.col1 = b.col1 and a.col1 LIKE b.col1||'%'

Answer 1

is it possible?Yes, although it doesn't make sense to do an equality join on the same columns you're then doing a like comparison on.
Did you try it?
If not why not? Takes less time than asking a question.
SQL> create table tablea
  2  (col1 varchar2(10));
Table created.
SQL>
SQL> create table tableb
  2  (col1 varchar2(1));
Table created.
SQL>
SQL> insert into tablea values ('apple');
1 row created.
SQL>
SQL> insert into tableb values ('a');
1 row created.
SQL>
SQL> select * from tablea a join tableb b on a.col1 like b.col1||'%';
COL1       C
apple      a
SQL>