InsertQuery   (children 2)
 Identifier distributed_01099_b
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Function concat (alias url) (children 1)
      ExpressionList (children 2)
       Literal \'http://localhost:8123/?query=\'
       Literal \'select+{1,2,3}+format+TSV\'
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function urlCluster (children 1)
        ExpressionList (children 4)
         Literal \'test_cluster_two_shards\'
         Subquery (children 1)
          SelectWithUnionQuery (children 1)
           ExpressionList (children 1)
            SelectQuery (children 1)
             ExpressionList (children 1)
              Identifier url
         Literal \'TSV\'
         Literal \'s String\'
