private void validateUpdateColumns() throws SQLException {
  for (  UpdateColumn column : _updatedColumns) {
    column.createColumnData(this);
    if (column.isSelfIncremented())     column.validateSelfIncrementedColumnName(this);
  }
}

private void validateUpdateColumns ( ) throws SQLException { for ( UpdateColumn column : _updatedColumns ) { column . createColumnData ( this ) ; if ( column . isSelfIncremented ( ) ) column . validateSelfIncrementedColumnName ( this ) ; } }
validates insert query ' s update columns
