Dodanie nowego postu do tabeli POSTS.
INSERT INTO POSTS (USER_ID, BODY)
VALUES (1, "How You do?");

INSERT INTO POSTS (USER_ID, BODY)
VALUES (2, "I'm great!");

INSERT INTO POSTS (USER_ID, BODY)
VALUES (3, "Me too!");

COMMIT;

Modyfikacje w dodanym rekordzie wartość pola BODY i ustawienia jej na "To delete".
UPDATE POSTS
SET BODY = "To delete"
WHERE ID = 7;

UPDATE POSTS
SET BODY = "To delete"
WHERE ID = 8;

UPDATE POSTS
SET BODY = "To delete"
WHERE ID = 9;

COMMIT;

Usunięcie dodany przed chwilą rekord.
DELETE FROM POSTS
WHERE ID = 7;

DELETE FROM POSTS
WHERE ID = 8;

DELETE FROM POSTS
WHERE ID = 9;

COMMIT;