title: how to resolve Pyspark dataframes query error keyword can't be an expression
body: <p>I am having two dataframes named tweetsDF and HashtagsDF. tweet_status_id of both the dataframes are equal and I want to retrieve hashtags count for a single tweet. This is the query I am using which inturns throws </p>
  
  <pre><code>ERROR : SyntaxError: keyword can't be an expression
  
  tweet_hashtags_count_DF = tweetsDF.join(HashtagsDF,sum('tweetsDF.*'),tweetsDF.tweet_status_id == HashtagsDF.tweet_status_id &amp; tweetsDF.tweet_status_id='636984052600274944').show()
  </code></pre>
  
  <p>Where I am wrong in the query ?</p>