How can we add multiple columns to an existing MySQL table using a single command?

We can also add multiple columns to an existing table with the help of ALTER command. Its syntax is as follows -

Syntax

Alter table table-name ADD (column-name1 datatype, column-name2 datatype,… column-nameN datatype);

Example

In the following example, with the help of ALTER command, the "Address", "Phone" and "E-mail" columns Add to "Students" table'.

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

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