альтер -таблица в MySQL
ALTER TABLE table_name
ADD column_name datatype;
Toutaboc
ALTER TABLE table_name
ADD column_name datatype;ALTER TABLE contacts
ADD last_name varchar(40) NOT NULL
AFTER contact_id,
ADD first_name varchar(35) NULL
AFTER last_name;ALTER TABLE `employees`CHANGE `emp_id` `emp_id` int(11) NULL;ALTER TABLE nom_table
DROP nom_colonne