title: Error in bq load "Could not convert value to string"
body: <p>I tried to load logs from Google Cloud Storage to BigQuery by the bq command
  and I've got this error "Could not convert value to string".</p>
  
  <p>my example data</p>
  
  <pre><code>{"ids":"1234,5678"}
  {"ids":1234}
  </code></pre>
  
  <p>my example schema</p>
  
  <pre><code>[
      { "name":"ids", "type":"string" }
  ]
  </code></pre>
  
  <p>It seems IDs can't convert by none quote at single ID.
  Data is made with fluent-plugin-s3, but more than one ID connected by a comma can be bound up with a quotation and isn't made single id.</p>
  
  <p>How can I load these data to BigQuery?</p>
  
  <p>Thanks in advance</p>