INTERVIEW QUESTIONS ORACLE PL-SQL DETAILS

Question: How we can create a table in PL/SQL block. insert records into it??? is it possible by some procedure or function?? please give example...

Answer: CREATE OR REPLACE PROCEDURE ddl_create_proc (p_table_name IN VARCHAR2)

AS

l_stmt VARCHAR2(200);

BEGIN

DBMS_OUTPUT.put_line('STARTING ');

l_stmt := 'create table '|| p_table_name || ' as (select * from emp )';

execute IMMEDIATE l_stmt;

DBMS_OUTPUT.put_line('end ');

EXCEPTION

WHEN OTHERS THEN

DBMS_OUTPUT.put_line('exception '||SQLERRM || 'message'||sqlcode);

END;

CREATE OR REPLACE PROCEDURE ddl_create_proc (p_table_name IN VARCHAR2)

AS

l_stmt VARCHAR2(200);

BEGIN

DBMS_OUTPUT.put_line('STARTING ');

l_stmt := 'create table '|| p_table_name || ' as (select * from emp )';

execute IMMEDIATE l_stmt;

DBMS_OUTPUT.put_line('end ');

EXCEPTION

WHEN OTHERS THEN

DBMS_OUTPUT.put_line('exception '||SQLERRM || 'message'||sqlcode);

END;
Source: CoolInterview.com

We can create table in procedure as explained in above case. but we can't create or perform any DDL in functions.

Source: CoolInterview.com

the above given answer is correct.
but we can also create or perform any ddl in functions.

I have tested myself Source: CoolInterview.com

we can create a table through pl/sql block with dbms_sql package and execute immediate statement.
CREATE OR REPLACE PROCEDURE PROC_CREATE_NEW_TABLE(STMT VARCHAR2)
IS
AUTHID CURRENT_USER
BEGIN
EXECUTE IMMEDIATE STMT;
END;
here AUTHID CURRENT_USER is used to create a table under current user privileges.
through this procedure we can add our own fields of a table on run time,even it is not depended on structure of an existing table.
Insertion record into the table, because it is DML operation so we can easily create a procedure with simple statements or execute immediate statement.
Source: CoolInterview.com

DDL's can be used in function provided that function should be invoked in Begin End block not from Select statement. Source: CoolInterview.com

DDL's can be used in function provided that function should be invoked in Begin End block not from Select statement. Source: CoolInterview.com

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