Re: cast from integer to money

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От Robert Haas
Тема Re: cast from integer to money
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Msg-id 83C03EB9-7AB0-45F2-9D6C-26963FB6DDC6@gmail.com
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Ответ на Re: cast from integer to money  (Joseph Adams <joeyadams3.14159@gmail.com>)
Ответы Re: cast from integer to money  ("Andrew Dunstan" <andrew@dunslane.net>)
Re: cast from integer to money  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Apr 4, 2011, at 1:46 AM, Joseph Adams <joeyadams3.14159@gmail.com> wrote:
> On Sun, Apr 3, 2011 at 11:23 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>> Thanks for the patch, but I think you forgot to worry about overflow:
>>
>> rhaas=# select 9223372036854775807::money;
>>  money
>> --------
>>  -$1.00
>> (1 row)
>
> cash_in doesn't test for overflow, either (tested on 8.4.0, 9.0.3, and HEAD):
>
> joey=# select '9223372036854775807'::money;
> money
> --------
> -$1.00
> (1 row)
>
> Is this a bug?

Seems like it. You have to feel sorry for the guy who deposits 9 quintillion dollars and then gets a note from the bank
sayinghis account is overdrawn... 

> Detail: unlike cash_in, numeric_cash does check for overflow
> (implicitly, through its use of numeric_int8).

Yeah.

...Robert

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