SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Identifier a
           Function tupleElement (alias value) (children 1)
            ExpressionList (children 2)
             Function max (children 1)
              ExpressionList (children 1)
               Function tuple (children 1)
                ExpressionList (children 2)
                 Identifier d
                 Identifier b
             Literal UInt64_2
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier test
          ExpressionList (children 1)
           Identifier a
   Function notEquals (children 1)
    ExpressionList (children 2)
     Identifier a
     Literal \'\'
