title: How can I regroup multiple tlogRow in talend to one file where I can see all my rows?
body: <p>I am working on a MongoDB database ETL, I need to prosses the data and move it to the PostgreSQL database, I used the tExtractJson in talent to extract all the documents and subdocuments but I am having a problem in regrouping all the rows into one output so that I can load my tables in Postgres DB.</p>
  <p>to load only one table I need information from multiple tlogRows</p>
  <p>I tried a tmap but it requires a main component and other are lookup one</p>