Re: CONCAT function

Поиск
Список
Период
Сортировка
От Richard Huxton
Тема Re: CONCAT function
Дата
Msg-id 200309161451.55262.dev@archonet.com
обсуждение исходный текст
Ответ на Re: CONCAT function  ("scott.marlowe" <scott.marlowe@ihs.com>)
Ответы Re: CONCAT function  ("scott.marlowe" <scott.marlowe@ihs.com>)
Список pgsql-general
On Tuesday 16 September 2003 14:35, scott.marlowe wrote:
> On Tue, 16 Sep 2003, Marek Lewczuk wrote:
> > Hello,
> > As I'm in the middle of the migration process form mysql to pg I found
> > that there is no CONCAT function which is available in mysql. Can
> > anybody tell me how to implement this function using plPERL or plPGSQL
> > language ?
>
> What's wrong with using the SQL spec || operator?

Because in mysql, SELECT 'a' || 'b' is treated as 'a' OR 'b' and you end up
with a return value of 0. Ho hum.

If I had to choose between coding concat() for PG or the standard operator for
mysql, I think I'd do the same.

--
  Richard Huxton
  Archonet Ltd

В списке pgsql-general по дате отправления:

Предыдущее
От: Lamar Owen
Дата:
Сообщение: Re: State of Beta 2
Следующее
От: "Dave [Hawk-Systems]"
Дата:
Сообщение: update field using substrings of another field