Alter Table
Alter table é um standard SQL, mas o Alter column é novo a partir do Firebird 1.5
Alter table “Some_Name”
Add “column_Name” Integer, /* Add a new column */
Drop “xyz”, /* Remove a column */
Alter column “Order” to “Sort_Order”, /* changes the column name */
Alter column “Order” position 3, /* changes the column’s position */
Alter column “Order” [...]

