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 urlCluster (children 1)
       ExpressionList (children 2)
        Literal \'test_cluster_two_shards_localhost\'
        Literal \'http://localhost:11111/test/{a,b,c}.tsv\'
