See the details here
INSERT INTO your_table (column1_name, column2_name, column3_name) VALUES (1, 'another value', 450);
INSERT INTO your_table (item_name, item_color)
VALUES ('a boingle', 'blue'),
('a doingle', 'red'),
('a foingle', 'yellow'),
('a poingle', 'aqua'),
('a qoingle', 'green'),
('a shoingle', 'purple'),
('a loingle', 'orange');
ALTER TABLE your_table DROP COLUMN column_name;
ALTER TABLE table_name CHANGE field_name field_name INT(6) AFTER another_field;