The alias is used to create table columns in MySQL and it is used as the CSS class name for the column and table cell.

As a result the first character of the alias must be in the range of A to Z, upper or lower case , or [a-z,A-Z]. If EasyTable finds a column label that starts with a number or other non-alphabetic character it will prepend a lower case 'a' to the alias when creating it.

For example;

Column Label = '18 to 24'

Alias = 'a18-to-24'