op.txt

CREATE DATABASE <id>;
USE <id>;
CREATE TABLE <id> (<id> <tipo> [, <id> <tipo>]*);
INSERT INTO <id> (<id> [, <id>]*) VALUES (<valor> [, <valor>]*);
SELECT * FROM <id>;
SELECT <id> [, <id>]* FROM <id>;
SELECT * FROM <id> ORDER BY <id>;
SELECT * FROM <id> WHERE <id> = <valor>;
UPDATE <id> SET <id> = <valor> WHERE <id> = <valor>;
DELETE FROM <id> WHERE <id> = <valor>;
TRUNCATE TABLE <id>;

V -> (<valor> [, <valor>]*)
C -> [, <id> <tipo>]*
Q -> (*|<id> [, <id>]*) from <id> (order by <id>|where <id> = <valor>)?;
S -> create I | 
    insert into <id> values \(V\); |
    select Q |
    update <id> set <id> = <valor> where <id> = <valor> | 
    delete from <id> where <id> = <valor>; |
    truncate table <id>;
I -> database <id>; | table <id> \(<id> <tipo> C\);

S
S -> cI
I -> dt<id> | t F | i
F ->  (<id> <tipo> F) | ,<id> <tipo> F | e