SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier column
    Subquery (alias d) (children 1)
     SelectWithUnionQuery (children 1)
      ExpressionList (children 1)
       SelectQuery (children 2)
        ExpressionList (children 1)
         Identifier d
        TablesInSelectQuery (children 1)
         TablesInSelectQueryElement (children 1)
          TableExpression (children 1)
           Subquery (children 1)
            SelectWithUnionQuery (children 1)
             ExpressionList (children 1)
              SelectQuery (children 1)
               ExpressionList (children 1)
                Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_4] (alias d)
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier TestTable
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier column
     Literal \'test\'
   ExpressionList (children 1)
    Identifier column
