title: Upserting into multiple tables from multiples topics using kafka-connect
body: <p>I am trying to read 2 kafka topics using JDBC sink connector and upsert into 2 Oracle tables which I manually created it. Each table has 1 primary key I want to use it in upsert mode. Connector works fine if I use only for 1 topic and only 1 field in <code>pk.fields</code> but if I enter multiple columns in <code>pk.fields</code> one from each table it fails to recognize the schema. Am I missing any thing please suggest.</p>
  
  <pre><code>name=oracle_sink_prod
  connector.class=io.confluent.connect.jdbc.JdbcSinkConnector
  tasks.max=1
  topics=KAFKA1011,JAFKA1011
  connection.url=URL
  connection.user=UID
  connection.password=PASSWD
  auto.create=false
  table.name.format=KAFKA1011,JAFKA1011
  pk.mode=record_value
  pk.fields= ID,COMPANY 
  auto.evolve=true
  insert.mode=upsert
  
  //ID is pk of kafka1011 table and COMPANY is of other
  </code></pre>