code: protected void appendBaseTable(final SQLSelect _sqlSelect, final SQLTable _sqlTable)
      {
          if (_sqlSelect.getFromTables().isEmpty()) {
              final TableIdx tableidx = _sqlSelect.getIndexer().getTableIdx(_sqlTable.getSqlTable());
              if (tableidx.isCreated()) {
                  _sqlSelect.from(tableidx.getTable(), tableidx.getIdx());
              }
          }
      }
docs: Append base table if not added already from other element.
  
  @param _sqlSelect the sql select
  @param _sqlTable the sql table