Re: Question about Array data type in PostgreSQL and their link with hash table concept

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От Dariyoosh Dariyoosh
Тема Re: Question about Array data type in PostgreSQL and their link with hash table concept
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Msg-id CA+fe79paQSMMVuzwB+3Zc0aFySbKLKmQRdrFmFFWHc8AgiUFDg@mail.gmail.com
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Ответ на Re: Question about Array data type in PostgreSQL and their link with hash table concept  (Luca Vernini <lucazeo@gmail.com>)
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Hi,

Thanks a lot for your clarification and the link about hstore

Regards,
Dariyoosh


On Tue, May 27, 2014 at 2:44 PM, Luca Vernini <lucazeo@gmail.com> wrote:
2014-05-27 14:39 GMT+02:00 Dariyoosh Dariyoosh <d.sunforums@gmail.com>:

> Are arrays in PostgreSQL like associative arrays in Oracle PL/SQL hash
> tables?, that is an
> association between key & values? where the integer indexes stand in reality
> for keys?

No, arrays in PostgreSQL are just arrays.
You can consider the position like a special case of key.. but it is
not, because it is just a position and cannot be set.
For key value you can consider hstore:
http://www.postgresql.org/docs/9.3/static/hstore.html
Or build your own multi dimension array.

> Thanks in advance,

Regards,

Lucazeo.

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