| From: | "Shulgin, Oleksandr" <oleksandr(dot)shulgin(at)zalando(dot)de> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Guillaume Lelarge <guillaume(at)lelarge(dot)info>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: custom function for converting human readable sizes to bytes |
| Date: | 2016-01-04 16:48:21 |
| Message-ID: | CACACo5QrNisiLBG8kC_fAVdJ82sF7J4nxu+x8S2ZDRW94HdSqQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Jan 4, 2016 at 4:51 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Mon, Jan 4, 2016 at 10:17 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
> wrote:
> > [ new patch ]
>
> + case '-':
> + ereport(ERROR,
> + (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
> + errmsg("size cannot be negative")));
>
> Why not? I bet if you copy any - sign to the buffer, this will Just Work.
>
I'm also inclined on dropping that explicit check for empty string below
and let numeric_in() error out on that. Does this look OK, or can it
confuse someone:
postgres=# select pg_size_bytes('');
ERROR: invalid input syntax for type numeric: ""
?
+ if ( conv->base_unit == GUC_UNIT_KB &&
>
Between "(" and "conv->..." I believe.
---
Alex
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