create table this_table_has_three_columns (
this_is_a_character_column varchar2(100),
this_is_a_number_column number,
this_is_a_date_column date
);SELECT * FROM STUDENTcreate or replace view active_toys as
select * from toys
where is_deleted = 'N';
select * from active_toys;select *
from toys
where not colour = null;
select *
from toys
where colour <> null;select *
from toys
join bricks
/* TODO */ on toy_id = brick_id SQL (Structured Query Language)create table toys_iot (
toy_id integer primary key,
toy_name varchar2(100)
) organization index;select table_name
from user_tables
where table_name = 'TOYS_HEAP';
drop table toys_heap;
select table_name
from user_tables
where table_name = 'TOYS_HEAP';select * from toys
where toy_name = 'Sir Stripypants'
and colour = 'green';SHAPE SHAPE_WEIGHT
cube 5
cuboid 1
pyramid 4