| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Andreas Peer <andipeer(at)gmx(dot)net> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: BUG #4421: convert_to() should be immutable |
| Date: | 2008-09-18 10:57:38 |
| Message-ID: | 48D23422.4060109@gmx.net |
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| Thread: | |
| Lists: | pgsql-bugs |
Andreas Peer wrote:
> Well, the use case is a strange one... I would like to use a varchar()
> column for storing a variable-length vector of integers. The numbers are
> represented by the codepoints. Therefore, I need to sort them as binary
> data, not as characters. I would often need to get all the vectors that
> lie in between to vectors, therefore I need the "binary" index.
> And the code should be as database independent as possible, therefore I
> cannot use an array or another data type that may not be supported by
> other DBMS.
What makes you think messing around with encoding conversions is going
to be portable. Arrays are at least in the SQL standard.
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