Work on a table:
$table = $this->table('table_name');
To commit changes in an up or down method:
$table->save();
To commite change in a change method:
$table->create(); # OR $table->update();
Add a column:
$table->addColumn('column_name', type);
PDO types:
primary_key string text integer biginteger float decimal datetime timestamp time date binary boolean