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Re: treat pairs, set as one item: looking for better way

by LanX (Bishop)
on Oct 19, 2013 at 11:59 UTC ( #1058906=note: print w/replies, xml ) Need Help??

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  1. or download this
    use strict;
    use warnings;
    ...
        mark($neighbor,$group)
      }
    }
    
  2. or download this
    (
      ["e", "f", "g"],
    ...
      ["y"],
      ["z"],
    )
    

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[Corion]: Meh. I have a very simple mechanism to scrape+track prices, and even to send me mail if something changes (via cron), but SQLite doesn't support window functions, so my simple SQL to determine a price change won't work :-( Maybe I should store the DB ...
[Corion]: ... in Pg, but that would mean that I'd have to deal with credentials and stuff :)
[Corion]: In fact, the whole thing is just four simple programs, one App::scrape, another being DBIx::RunSQL, and one some glue to convert a JSON object into an SQL INSERT statement (+DBI connect/execute), so it would be an incredibly simple solution...
[Corion]: ... but that simplicity falls down due to SQLite letting me down and me being too lazy to move to a real DB. Maybe DBD::CSV can handle window functions...
[hippo]: Pg has the "trust" mechanism if you don't fancy using credentials for a trivial db.
[Corion]: hippo: Oooh, that sounds quite nice - let me read the documentation on that :)
[hippo]: https://www. postgresql.org/ docs/current/ static/auth- methods.html#AUTH- TRUST

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