Limits of SQL
От | Joachim Zobel |
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Тема | Limits of SQL |
Дата | |
Msg-id | 1117693984.4999.13.camel@localhost обсуждение исходный текст |
Ответы |
Re: Limits of SQL
Re: Limits of SQL Re: Limits of SQL Re: Limits of SQL |
Список | pgsql-general |
Hi. I am looking for a way to write a SELECT that finds connectivity components of a graph or at least for one that given two nodes determines if there is a path between them. It seems that this is not possible, no matter what graph representation I choose. Which constructs from set theory are missing in SQL? Set of all subsets is one I am missing, or can it be done somehow? Is anybody else thinking about the limits of SQL? As often I am probably not the first to ask these questions. Any pointers? Sincerely, Joachim
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