1ALTER TABLE your_table_name RENAME COLUMN original_column_name TO new_column_name;
1ALTER TABLE contacts
2 ADD last_name varchar(40) NOT NULL
3 AFTER contact_id,
4 ADD first_name varchar(35) NULL
5 AFTER last_name;
1ALTER TABLE table_name
2 MODIFY column_name column_definition
3 [ FIRST | AFTER column_name ];