adds a column that will be dropped from the table . concode_field_sep Vector<Column> columnsToDrop concode_elem_sep Vector<Column> columnsToAdd concode_elem_sep String name concode_elem_sep Vector<Column> columnsToModify concode_elem_sep String STATEMENT_SEPARATOR concode_elem_sep Vector<Column> allTableColumns concode_field_sep void addColumn concode_elem_sep boolean isAlterModify concode_elem_sep String getAlterModifyStatement concode_elem_sep String getDropStatement concode_elem_sep String getAlterAddStatement concode_elem_sep boolean isAlterAdd concode_elem_sep boolean isAlterDrop concode_elem_sep String getAlterDropStatement concode_elem_sep void addColumnToAdd concode_elem_sep void addColumnToModify concode_elem_sep String getCreateStatement
void function ( Column arg0 ) { if ( ! columnsToDrop . contains ( arg0 ) ) { columnsToDrop . add ( arg0 ) ; } }