SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier a
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier c
      Function toInt32 (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
    Function multiply (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier c
        Function toInt32 (children 1)
         ExpressionList (children 1)
          Literal UInt64_1
      Literal UInt64_2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier prewhere_alias
   Function equals (children 1)
    ExpressionList (children 2)
     Function multiply (children 1)
      ExpressionList (children 2)
       Function plus (children 1)
        ExpressionList (children 2)
         Identifier c
         Function toInt32 (children 1)
          ExpressionList (children 1)
           Literal UInt64_1
       Literal UInt64_2
     Literal UInt64_6
