2010/9/6 Itagaki Takahiro <itagaki.takahiro@gmail.com>:
> On Mon, Sep 6, 2010 at 10:47 PM, Tom Lane <tgl@sss.pgh.pa.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
>