title: AWS Athena map query
body: <p>The table has a column like this,</p>
  
  <pre><code>data  MAP&lt;string, string&gt;
  </code></pre>
  
  <p>and rows like,</p>
  
  <pre><code>id | data
  1  | {"foo": 123}
  2  | {"bar": 456}
  </code></pre>
  
  <p>Then, how can i search data["bar"] = 456?
  I tried but it shows me the error "Column 'bar' cannot be resolved"</p>