| From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
|---|---|
| To: | Itagaki Takahiro <itagaki(dot)takahiro(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: string function - "format" function proposal |
| Date: | 2010-09-06 14:07:02 |
| Message-ID: | AANLkTinh8Wkuq+pLKuKexYD=WKFUVRxhYt2w31Jne4aq@mail.gmail.com |
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| Lists: | pgsql-hackers |
2010/9/6 Itagaki Takahiro <itagaki(dot)takahiro(at)gmail(dot)com>:
> On Mon, Sep 6, 2010 at 10:47 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> No, you need to use the I/O functions. Not every type is guaranteed to
>> have a cast to text.
>
> One issue is that Pavel want to generate valid SQL statement using
> %v format. Boolean values are printed as t or f, so the unquoted
> values are not valid syntax.
we can format some types directly - but I like idea of casting to text
because there is space for users.
Pavel
>
> If we only use output functions, boolean values should be written as
> 't' or 'f' (single-quoted), Only numeric values can be unquoted on %v.
>
> --
> Itagaki Takahiro
>
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