From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
---|---|
To: | "Alvaro Herrera" <alvherre(at)commandprompt(dot)com> |
Cc: | "Ryan Bradetich" <rbradetich(at)gmail(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [RFC] Unsigned integer support. |
Date: | 2008-07-25 16:28:05 |
Message-ID: | 87y73qgc8a.fsf@oxford.xeocode.com |
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Lists: | pgsql-hackers |
"Alvaro Herrera" <alvherre(at)commandprompt(dot)com> writes:
> Hmm, if we do that, how would the system resolve something like this?
>
> select 1000 + 1000
Well we have the same problem with 'foo' || 'bar'. The question I think is
whether the solution there scales to having two different fallback types.
> There would be no clue as to what + operator to pick, since both
> operands are unknown. This is in fact what happens today with
>
> alvherre=# select '100' + '100';
> ERROR: operator is not unique: unknown + unknown at character 14
> HINT: Could not choose a best candidate operator. You might need to add explicit type casts.
> STATEMENT: select '100' + '100';
Perhaps we could kill two birds with one stone...
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Ask me about EnterpriseDB's 24x7 Postgres support!
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