title: unable to import csv table DATEs columns to BigQuery
body: <p>I am unable to import csv table > DATEs columns to BigQuery,
  DATEs are not recognized, even they have correct format according this docu
  <a href="https://cloud.google.com/bigquery/docs/schema-detect" rel="nofollow noreferrer">https://cloud.google.com/bigquery/docs/schema-detect</a>   YYYY-MM-DD</p>
  
  <p>So DATEs columns are not recognized and are renamed to _2020-0122, 2020-01-23...
  Is the issue that DATES are in 1st row as column name ?
  But How can I then import dates, when I want use them in TimeSeries Charts (DataStudio) ?</p>
  
  <pre><code>
  </code></pre>
  
  <p>here is sample source csv></p>
  
  <pre><code>Province/State,Country/Region,Lat,Long,2020-01-22,2020-01-23,2020-01-24,2020-01-25,2020-01-026
  Anhui,China,31.8257,117.2264,1,9,15,39,60
  Beijing,China,40.1824,116.4142,14,22,36,41,68
  Chongqing,China,30.0572,107.874,6,9,27,57,75
  </code></pre>
  
  <p>Here is ig from Bigquery
  <a href="https://i.stack.imgur.com/vJGC6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vJGC6.png" alt="enter image description here"></a></p>