I just want to loop a dataset

When a person clicks on a combo box the data is retrived with out a problem.  then I want to loop the dataset.

var ss=''
  while(business_ds.hasNext()) {
   var  q =  business_ds.currentItem.Question;
   var  a =  business_ds.currentItem.Answer;
    var author =  business_ds.currentItem.Author;
   ss += q;
   ss += a;
   ss += author;

this doesnt work for me

Whats wrong
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You can not loop through a dataset direct. DataSet constitutes multiple tables and you need to narrow down to the appropriate table and then loop through the records in the particular table.

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you can use JOIN to loop through a dataset. Here is an example:

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