We can also add multiple columns to an existing table with the help of ALTER command. The syntax for it would be as follows −
Alter table table-name ADD (column-name1 datatype, column-name2 datatype,… column-nameN datatype);
In the example below, with the help of ALTER Command, columns ‘Address’, ‘Phone’ and ‘Email’ are added to the table ‘Student’.
mysql> Alter Table Student ADD(Address Varchar(25), Phone INT, Email Varchar(20)); Query OK, 5 rows affected (0.38 sec) Records: 5 Duplicates: 0 Warnings: 0