SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function COUNT (children 1)
     ExpressionList (children 1)
      Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function s3Cluster (children 1)
       ExpressionList (children 2)
        Literal \'test_cluster_two_shards_localhost\'
        Literal \'http://localhost:11111/test/{a,b,c}.tsv\'