SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function groupArray (children 1)
     ExpressionList (children 1)
      Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function cluster (children 1)
       ExpressionList (children 2)
        Identifier test_cluster_two_shards
        Function viewExplain (children 1)
         ExpressionList (children 3)
          Literal \'EXPLAIN PIPELINE\'
          Literal \'graph = 1\'
          Subquery (children 1)
           SelectWithUnionQuery (children 1)
            ExpressionList (children 1)
             SelectQuery (children 2)
              ExpressionList (children 1)
               Asterisk
              TablesInSelectQuery (children 1)
               TablesInSelectQueryElement (children 1)
                TableExpression (children 1)
                 Function remote (children 1)
                  ExpressionList (children 3)
                   Literal \'127.0.0.4\'
                   Identifier system
                   Identifier one
