insert the string & display the character of that string in PLSQL - oracle

Question

Write a function to insert the string in a table which will display the character of string like if we pass (KRISHNA it will display
K
R
I
S
H
N
A
) Inside the table.

Answer 1

Here's one option:
Sample table:
SQL> create table test (source_string varchar2(20), target_string varchar2(20));
Table created.
Procedure:
SQL> create or replace procedure p_test (par_string in varchar2) is
2 begin
3 insert into test (source_string, target_string)
4 select par_string,
5 regexp_replace(par_string, '(.)', '\1' ||chr(10))
6 from dual;
7 end;
8 /
Procedure created.
Testing:
SQL> exec p_test ('KRISHNA');
PL/SQL procedure successfully completed.
SQL> select * from test;
SOURCE_STRING TARGET_STRING
-------------------- --------------------
KRISHNA K
R
I
S
H
N
A
SQL>
If it has to be a function, then - as you see how to do it - you could have switched to it (the function) yourself, instead of insisting on someone else doing your homework.
Anyway:
SQL> create or replace function f_test (par_string in varchar2)
2 return varchar2
3 is
4 begin
5 return regexp_replace(par_string, '(.)', '\1' ||chr(10));
6 end;
7 /
Function created.
SQL> insert into test (source_string, target_string)
2 values ('IHCASAYBAS', f_test ('IHCASAYBAS'));
1 row created.
Result:
SQL> select * from test;
SOURCE_STRING TARGET_STRING
-------------------- --------------------
KRISHNA K
R
I
S
H
N
A
IHCASAYBAS I
H
C
A
S
A
Y
B
A
S
SQL>