From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Type of bare text strings |
Date: | 2006-06-08 16:14:39 |
Message-ID: | 20060608161439.GC17421@surnet.cl |
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Lists: | pgsql-hackers |
Alvaro Herrera wrote:
> Jim C. Nasby wrote:
> > What type are bare strings considered if they haven't been cast? I'm curious as
> > to how the first case is of size 5, and how the last case is 301...
> >
> > decibel=# select pg_column_size('test');
> > 5
>
> "unknown". This seems to be a cstring (i.e. length 5 considering the
> trailing \0)
Yup. This is handled by this code:
else if (typlen == -2)
{
/* cstring */
result = strlen(DatumGetCString(value)) + 1;
}
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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