PL/SQL Execute immediate create table and insert data into it - plsql

Question

Let's have a look on my source code:
CREATE OR REPLACE PROCEDURE MAKE_COPY_OF_CLASSROOMS AUTHID CURRENT_USER AS
TYPE classrooms_table_type IS TABLE OF classrooms%ROWTYPE INDEX BY PLS_INTEGER;
classrooms_backup classrooms_table_type;
CURSOR classrooms_cursor IS
SELECT *
FROM classrooms
WHERE year = 1
ORDER BY name;
v_rowcnt PLS_INTEGER := 0;
BEGIN
OPEN classrooms_cursor;
FETCH classrooms_cursor
BULK COLLECT INTO classrooms_backup;
CLOSE classrooms_cursor;
EXECUTE IMMEDIATE 'CREATE TABLE classrooms_copy AS (SELECT * FROM classrooms WHERE 1 = 2)';
--COPY ALL STORED DATA FROM classrooms_backup TO classrooms_copy
END MAKE_COPY_OF_classrooms;
I'm stucked for hours on trying to insert data from "classrooms_backup" into the table "classrooms_copy", which is created by EXECUTE IMMEDIATE command. It's necessary to create table "classrooms_copy" via EXECUTE IMMEDIATE command. I tried to create another EXECUTE command with for loop in it:
EXECUTE IMMEDIATE 'FOR i IN classrooms_backup.FIRST..classrooms_backup.LAST LOOP
INSERT INTO classrooms_copy(id,room_id,year,name)
VALUES(classrooms_backup(i).id,classrooms_backup(i).room_id,classrooms_backup(i).year,classrooms_backup(i).name);
END LOOP;';
But it's road to the hell. I'm retrieving an invalid SQL statement error.
Thanks for your help!

Answer 1

There's no need for much PL/SQL here. Also, try to avoid the keyword CURSOR - there's almost always a better way to do it.
create or replace procedure make_copy_of_classrooms authid current_user as
begin
execute immediate '
create table classrooms_copy as
select *
from classrooms
where year = 1
order by name
';
end make_copy_of_classrooms;
/