Обсуждение: Re: [pgsql-sql] Daily digest v1.3328 (5 messages)

Many frameworks do not natively recognize "t" as true and "f" as false.
I'm using php, json_encode and extjs.
Is it possible to cause the default output of boolean values to be something
other than "t" and "f", say "true" and "false" or even 1 and 0?
Of course I can do this for an individual query using appropriate functions, but
it would help me to be able to modify the default behavior.

TJ

On Wednesday 22 September 2010 5:12:45 pm TJ O'Donnell wrote:
> Many frameworks do not natively recognize "t" as true and "f" as false.
> I'm using php, json_encode and extjs.
> Is it possible to cause the default output of boolean values to be
> something other than "t" and "f", say "true" and "false" or even 1 and 0?
> Of course I can do this for an individual query using appropriate
> functions, but it would help me to be able to modify the default behavior.
>
> TJ

From here;

http://www.postgresql.org/docs/8.4/interactive/datatype-boolean.html

Valid literal values for the "true" state are:

TRUE
't'
'true'
'y'
'yes'
'on'
'1'

For the "false" state, the following values can be used:

FALSE
'f'
'false'
'n'
'no'
'off'
'0'

--
Adrian Klaver
adrian.klaver@gmail.com

On Wednesday 22 September 2010 5:40:55 pm David Wilson wrote:
> On Wed, Sep 22, 2010 at 8:30 PM, Adrian Klaver <adrian.klaver@gmail.com>wrote:
> > From here;
> >
> > http://www.postgresql.org/docs/8.4/interactive/datatype-boolean.html
>
> I believe the question relates to changing the string *output* of the
> database to something other than 't' and 'f', not an issue with input
> formats.

Oops missed that. This would seem to an adapter problem. I work with Python and
psycopg2 adapts the boolean values to True and False. Not sure about the PHP
solution.

--
Adrian Klaver
adrian.klaver@gmail.com

On 23/09/2010 02:00, Adrian Klaver wrote:
> On Wednesday 22 September 2010 5:40:55 pm David Wilson wrote:
>> On Wed, Sep 22, 2010 at 8:30 PM, Adrian Klaver<adrian.klaver@gmail.com>wrote:
>>>  From here;
>>>
>>> http://www.postgresql.org/docs/8.4/interactive/datatype-boolean.html
>>
>> I believe the question relates to changing the string *output* of the
>> database to something other than 't' and 'f', not an issue with input
>> formats.
>
> Oops missed that. This would seem to an adapter problem. I work with Python and
> psycopg2 adapts the boolean values to True and False. Not sure about the PHP
> solution.

AFAIK the native functions (pg_query() etc) output 't' and 'f', but PDO
(which I've been using in the context of Zend Framework) output "real"
true and false values.

Ray.

--
Raymond O'Donnell :: Galway :: Ireland
rod@iol.ie

Yes indeed, pg_query returns "t" or "f" as strings when selecting
boolean columns.
I was able to switch over to PDO with only an afternoon's work and it works
perfectly for boolean columns, returning values that are properly interpreted
as true and false by php, and by json_encode.  I'm all set now.
Thanks for the help!

TJ O'Donnell

On Thu, Sep 23, 2010 at 1:18 AM, Raymond O'Donnell <rod@iol.ie> wrote:
> On 23/09/2010 02:00, Adrian Klaver wrote:
>>
>> On Wednesday 22 September 2010 5:40:55 pm David Wilson wrote:
>>>
>>> On Wed, Sep 22, 2010 at 8:30 PM, Adrian
>>> Klaver<adrian.klaver@gmail.com>wrote:
>>>>
>>>>  From here;
>>>>
>>>> http://www.postgresql.org/docs/8.4/interactive/datatype-boolean.html
>>>
>>> I believe the question relates to changing the string *output* of the
>>> database to something other than 't' and 'f', not an issue with input
>>> formats.
>>
>> Oops missed that. This would seem to an adapter problem. I work with
>> Python and
>> psycopg2 adapts the boolean values to True and False. Not sure about the
>> PHP
>> solution.
>
> AFAIK the native functions (pg_query() etc) output 't' and 'f', but PDO
> (which I've been using in the context of Zend Framework) output "real" true
> and false values.
>
> Ray.
>
> --
> Raymond O'Donnell :: Galway :: Ireland
> rod@iol.ie
>