InsertQuery   (children 3)
 Identifier defaults
 ExpressionList (children 2)
  Identifier x
  Identifier y
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Identifier x
     Identifier y
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier defaults
    Literal UInt64_1
