SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier p.begin
    Identifier e.value
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier probe0 (alias p)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier events0 (alias e)
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier begin
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier p.begin
   Set
