Thread: Please help me.. problem in to_char

Please help me.. problem in to_char

From

azah azah

Date:

21 July 2004, 08:34:02

Hi, 
I want convert from mysql to postresql, previously
in mysql the code as below:

SELECT t2.id, t2.name, date_format(t1.created,\'%W %M %e, %Y - %r\') 

In postresql no date_format function, we need to use to_char function
but it still work because still need to put ::date such as
SELECT to_char('2005-03-27'::date,'DD/MM/YYYY');

How can i put ::date beside t1.created to get the output?
Any idea??

Re: Please help me.. problem in to_char

From

Markus Bertheau

Date:

21 July 2004, 12:16:53

В Срд, 21.07.2004, в 10:33, azah azah пишет:
> Hi,
> I want convert from mysql to postresql, previously
> in mysql the code as below:
>
> SELECT t2.id, t2.name, date_format(t1.created,\'%W %M %e, %Y - %r\')
>
> In postresql no date_format function, we need to use to_char function
> but it still work because still need to put ::date such as
> SELECT to_char('2005-03-27'::date,'DD/MM/YYYY');
>
> How can i put ::date beside t1.created to get the output?

Just do it:

to_char(t1.created::date, 'DD/MM/YYYY')

--
Markus Bertheau <twanger@bluetwanger.de>

Re: Please help me.. problem in to_char

From

Theodore Petrosky

Date:

21 July 2004, 12:35:29

what kind of column is t1.created? It appears that it
is a text column and the format looks like a date. Is
this correct or is it a date? I need more information
about your table structure. 

What about:

SELECT t2.id, t2.name, to_char(cast (t1.created as
date),'DD/MM/YYYY')

but the other '::' should work also.

extremedb=> SELECT to_char(cast ('12/4/2004' as
date),'DD/MM/YYYY'); to_char   
------------04/12/2004
(1 row)


extremedb=> SELECT
to_char('12/4/2004'::date,'DD/MM/YYYY'); to_char   
------------04/12/2004
(1 row)



I have a table with a timestamp in it called
createdate..


\d clientinfo                Table "public.clientinfo"    Column      |           Type           |  
Modifiers   
-----------------+--------------------------+-----acode            | text                            |
not nullcreatedate      | timestamp with time zone | default
now()


extremedb=> SELECT to_char(cast (clientinfo.createdate
as date),'DD/MM/YYYY') from clientinfo; to_char   
------------14/07/200414/07/200414/07/2004



Ted

--- azah azah <izza76@gmail.com> wrote:
> Hi, 
> I want convert from mysql to postresql, previously
> in mysql the code as below:
> 
> SELECT t2.id, t2.name, date_format(t1.created,\'%W
> %M %e, %Y - %r\') 
> 
> In postresql no date_format function, we need to use
> to_char function
> but it still work because still need to put ::date
> such as
> SELECT to_char('2005-03-27'::date,'DD/MM/YYYY');
> 
> How can i put ::date beside t1.created to get the
> output?
> Any idea??
> 
> ---------------------------(end of
> broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to
> majordomo@postgresql.org
> 

    
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Re: Please help me.. problem in to_char

From

azah azah

Date:

22 July 2004, 02:44:04

Why still not working???
I have try all the suggestions, still error like below:
ERROR:  cannot cast type character varying to date
I'm using latest version of postresql.

On Wed, 21 Jul 2004 05:35:06 -0700 (PDT), Theodore Petrosky
<tedpet5@yahoo.com> wrote:
> 
> what kind of column is t1.created? It appears that it
> is a text column and the format looks like a date. Is
> this correct or is it a date? I need more information
> about your table structure.
> 
> What about:
> 
> SELECT t2.id, t2.name, to_char(cast (t1.created as
> date),'DD/MM/YYYY')
> 
> but the other '::' should work also.
> 
> extremedb=> SELECT to_char(cast ('12/4/2004' as
> date),'DD/MM/YYYY');
>   to_char
> ------------
>  04/12/2004
> (1 row)
> 
> extremedb=> SELECT
> to_char('12/4/2004'::date,'DD/MM/YYYY');
>   to_char
> ------------
>  04/12/2004
> (1 row)
> 
> I have a table with a timestamp in it called
> createdate..
> 
> \d clientinfo
>                  Table "public.clientinfo"
>      Column      |           Type           |
> Modifiers
> -----------------+--------------------------+-----
>  acode            | text                            |
> not null
>  createdate      | timestamp with time zone | default
> now()
> 
> extremedb=> SELECT to_char(cast (clientinfo.createdate
> as date),'DD/MM/YYYY') from clientinfo;
>   to_char
> ------------
>  14/07/2004
>  14/07/2004
>  14/07/2004
> 
> Ted
> 
> --- azah azah <izza76@gmail.com> wrote:
> > Hi,
> > I want convert from mysql to postresql, previously
> > in mysql the code as below:
> >
> > SELECT t2.id, t2.name, date_format(t1.created,\'%W
> > %M %e, %Y - %r\')
> >
> > In postresql no date_format function, we need to use
> > to_char function
> > but it still work because still need to put ::date
> > such as
> > SELECT to_char('2005-03-27'::date,'DD/MM/YYYY');
> >
> > How can i put ::date beside t1.created to get the
> > output?
> > Any idea??
> >
> > ---------------------------(end of
> > broadcast)---------------------------
> > TIP 1: subscribe and unsubscribe commands go to
> > majordomo@postgresql.org
> >
> 
>                 
> __________________________________
> Do you Yahoo!?
> Yahoo! Mail - 50x more storage than other providers!
> http://promotions.yahoo.com/new_mail
> 
> 
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
>

Re: Please help me.. problem in to_char

From

azah azah

Date:

22 July 2004, 03:00:18

Thanks all, :)

It working now, i'm using code as below:to_char(t1.created::date,'DD/MM/YYYY')

but other problem come out, error as below:
ERROR:  relation "plugins" does not exist

what that's mean?? table plugins already exists..



On Thu, 22 Jul 2004 10:43:35 +0800, azah azah <izza76@gmail.com> wrote:
> Why still not working???
> I have try all the suggestions, still error like below:
> ERROR:  cannot cast type character varying to date
> I'm using latest version of postresql.
> 
> 
> 
> On Wed, 21 Jul 2004 05:35:06 -0700 (PDT), Theodore Petrosky
> <tedpet5@yahoo.com> wrote:
> >
> > what kind of column is t1.created? It appears that it
> > is a text column and the format looks like a date. Is
> > this correct or is it a date? I need more information
> > about your table structure.
> >
> > What about:
> >
> > SELECT t2.id, t2.name, to_char(cast (t1.created as
> > date),'DD/MM/YYYY')
> >
> > but the other '::' should work also.
> >
> > extremedb=> SELECT to_char(cast ('12/4/2004' as
> > date),'DD/MM/YYYY');
> >   to_char
> > ------------
> >  04/12/2004
> > (1 row)
> >
> > extremedb=> SELECT
> > to_char('12/4/2004'::date,'DD/MM/YYYY');
> >   to_char
> > ------------
> >  04/12/2004
> > (1 row)
> >
> > I have a table with a timestamp in it called
> > createdate..
> >
> > \d clientinfo
> >                  Table "public.clientinfo"
> >      Column      |           Type           |
> > Modifiers
> > -----------------+--------------------------+-----
> >  acode            | text                            |
> > not null
> >  createdate      | timestamp with time zone | default
> > now()
> >
> > extremedb=> SELECT to_char(cast (clientinfo.createdate
> > as date),'DD/MM/YYYY') from clientinfo;
> >   to_char
> > ------------
> >  14/07/2004
> >  14/07/2004
> >  14/07/2004
> >
> > Ted
> >
> > --- azah azah <izza76@gmail.com> wrote:
> > > Hi,
> > > I want convert from mysql to postresql, previously
> > > in mysql the code as below:
> > >
> > > SELECT t2.id, t2.name, date_format(t1.created,\'%W
> > > %M %e, %Y - %r\')
> > >
> > > In postresql no date_format function, we need to use
> > > to_char function
> > > but it still work because still need to put ::date
> > > such as
> > > SELECT to_char('2005-03-27'::date,'DD/MM/YYYY');
> > >
> > > How can i put ::date beside t1.created to get the
> > > output?
> > > Any idea??
> > >
> > > ---------------------------(end of
> > > broadcast)---------------------------
> > > TIP 1: subscribe and unsubscribe commands go to
> > > majordomo@postgresql.org
> > >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Mail - 50x more storage than other providers!
> > http://promotions.yahoo.com/new_mail
> >
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
> >
>