title: Insert data in map<text,text> in cassandra db
body: <p>i have a column in cassandra database as <code>map&lt;text,text&gt;</code></p>
  
  <p>I insert the data in this table as :</p>
  
  <pre><code>INSERT INTO "Table1" (col1) VALUES ({'abc':'abc','hello':'world','flag':'true'});
  </code></pre>
  
  <p>So, in my code i can get the data as :</p>
  
  <pre><code>{
      "abc":"abc",
      "hello":"world",
      "flag":"true"
  }
  </code></pre>
  
  <p>But, now i want this like :</p>
  
  <pre><code>{
      "abc":"abc",
      "hello":"world",
      "flag":{
      "data":{ "hi":"cassandra"},
      "working":"no"
      }
  }
  </code></pre>
  
  <p>For this, when I try the insert query, it says that it does not match the type <code>map&lt;text,text&gt;</code></p>
  
  <p>How can I make this work ?</p>