Re: string function - "format" function proposal
| От | Itagaki Takahiro |
|---|---|
| Тема | Re: string function - "format" function proposal |
| Дата | |
| Msg-id | AANLkTi=J4MMFbczzBU11zhxDY7KNf_hkXHEr16s6JkZP@mail.gmail.com обсуждение исходный текст |
| Ответ на | string function - "format" function proposal (Pavel Stehule <pavel.stehule@gmail.com>) |
| Ответы |
Re: string function - "format" function proposal
|
| Список | pgsql-hackers |
On Mon, Aug 30, 2010 at 7:58 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> propsals:
> * "format" function - uses same formatting as PL/pgSQL RAISE statement
> * "sprintf" function
>
> Now I propose a compromise - "format" function with only three tags:
> %s .. some string
> %i .. SQL identifier
> %l .. string literal
These are just ideas:
* Use $n, as like as PREPARE command. It allows for us to swap arguments in any order. SELECT format('$2 before $1',
'aaa','bbb')
* Call to_char() functions for each placeholder. For example, format('=={YYYY-MM-DD}==', tm::timestamp) is equivalent
to '==' || to_char(tm, 'YYYY-MM-DD') || '==' '{}' prints the input with the default format.
New languages' libraries might be of some help. LLs, C#, etc.
--
Itagaki Takahiro
В списке pgsql-hackers по дате отправления: