title: Mirth connect database to database duplicate
body: <p>I'm currently developing a channel from Database reader to Database writer. Both the source and destination connectors are running on SQL server.</p>
  
  <p>The problem is that by setting Interval in source to 5 milliseconds, the channel polls and write data every 5 milliseconds, even if the data has been polled or written before.</p>
  
  <p>For example, if there is only one row in the source database, the channel will keep inserting the one row into the destination database every 5 milliseconds infinitely. This results in infinite duplicate rows in the destination database.</p>
  
  <p>Is there any way to avoid such situation and only insert into destination only if the data polled is new?</p>