code: public AbstractPrintQuery addSelect(final String... _selectStmts)
          throws EFapsException
      {
          if (isMarked4execute()) {
              for (final String selectStmt : _selectStmts) {
                  final OneSelect oneselect = new OneSelect(this, selectStmt);
                  this.allSelects.add(oneselect);
                  this.selectStmt2OneSelect.put(selectStmt, oneselect);
                  oneselect.analyzeSelectStmt();
              }
          }
          return this;
      }
docs: Add an select to the PrintQuery. A select is something like:
  <code>class[Emperador_Products_ClassFloorLaminate].linkto[SurfaceAttrId].attribute[Value]</code>
  <br>
  The use of the key words like "class" etc is mandatory. Contrary to
  {@link #addPhrase(String, String)} the values will not be parsed! The
  values will not be editable.
  
  @param _selectStmts selectStatments to be added
  @return this PrintQuery
  @throws EFapsException on error