SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function merge (alias one) (children 1)
       ExpressionList (children 2)
        Literal \'system\'
        Literal \'^one$\'
   Function or (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier one.dummy
       Literal UInt64_0
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier one.dummy
       Literal UInt64_1