private String getVariablesList() {
        StringBuilder list = new StringBuilder();

        for ( int i = 0; i < sqlVariables.size(); i++ ) {
            if ( i % 5 == 0 && i != 0 )
                list.append( "\n" + TAB + TAB + TAB );

            switch ( databaseType ) {
            case H2:
            case ORACLE:
                list.append( sqlVariables.get( i ) );
            }
            if ( i != sqlVariables.size() - 1 ) {
                list.append( " , " );
            }
        }

        return list.toString();
    }