SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier l (alias L)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier r (alias R)
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier L.y
        Identifier R.y
   Function greaterOrEquals (children 1)
    ExpressionList (children 2)
     Identifier R.ty
     Literal UInt64_2019
