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* How to quote date value?
@ 2003-11-21 09:39 nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
0 siblings, 1 reply; 6+ messages in thread
From: nobody @ 2003-11-21 09:39 UTC (permalink / raw)
To: pgsql-sql
What is correct character to quote date values in SELECT. Is is single
quote?
When I do:
SELECT '1/11/2003' AS "InvoiceDate";
the returned value is of unknown type (not a date).
Then I tried:
SELECT 1/11/2003 AS "InvoiceDate";
and the InvoiceDate was set to zero (I guess the engine divided the numbers
in date).
Then I tried:
SELECT 1-11-2003 AS "InvoiceDate";
and the numbers in date value got substracted.
Using PostgreSQL 7.4 and PgAdmin 3.
Any insight is welcome.
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: How to quote date value?
2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
@ 2003-11-21 10:53 ` nobody <nobody@nowhere.near.here>
2003-11-21 18:01 ` Re: How to quote date value? Gaetano Mendola <mendola@bigfoot.com>
0 siblings, 1 reply; 6+ messages in thread
From: nobody @ 2003-11-21 10:53 UTC (permalink / raw)
To: pgsql-sql
I have found it in documentation, it is single quote. But it does not
explain why
SELECT '1/11/2003' AS "InvoiceDate";
returns "unknown" data type instead of "date".
"nobody" <nobody@nowhere.near.here> wrote in message
news:bpkmg7$2aj3$1@news.hub.org...
> What is correct character to quote date values in SELECT. Is is single
> quote?
>
> When I do:
>
> SELECT '1/11/2003' AS "InvoiceDate";
>
> the returned value is of unknown type (not a date).
>
> Then I tried:
>
> SELECT 1/11/2003 AS "InvoiceDate";
>
> and the InvoiceDate was set to zero (I guess the engine divided the
numbers
> in date).
>
> Then I tried:
>
> SELECT 1-11-2003 AS "InvoiceDate";
>
> and the numbers in date value got substracted.
>
> Using PostgreSQL 7.4 and PgAdmin 3.
>
> Any insight is welcome.
>
>
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: How to quote date value?
2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
@ 2003-11-21 18:01 ` Gaetano Mendola <mendola@bigfoot.com>
2003-11-21 19:04 ` Re: How to quote date value? Stephan Szabo <sszabo@megazone.bigpanda.com>
0 siblings, 1 reply; 6+ messages in thread
From: Gaetano Mendola @ 2003-11-21 18:01 UTC (permalink / raw)
To: pgsql-sql; +Cc: nobody <nobody@nowhere.near.here>
nobody wrote:
> I have found it in documentation, it is single quote. But it does not
> explain why
>
> SELECT '1/11/2003' AS "InvoiceDate";
>
> returns "unknown" data type instead of "date".
Why not a string ? or a fancy custom type ?
Regards
Gaetano Mendola
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: How to quote date value?
2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 18:01 ` Re: How to quote date value? Gaetano Mendola <mendola@bigfoot.com>
@ 2003-11-21 19:04 ` Stephan Szabo <sszabo@megazone.bigpanda.com>
2003-11-21 19:16 ` Re: How to quote date value? terry@greatgulfhomes.com
2003-11-23 16:18 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
0 siblings, 2 replies; 6+ messages in thread
From: Stephan Szabo @ 2003-11-21 19:04 UTC (permalink / raw)
To: pgsql-sql
On Fri, 21 Nov 2003, Gaetano Mendola wrote:
> nobody wrote:
> > I have found it in documentation, it is single quote. But it does not
> > explain why
> >
> > SELECT '1/11/2003' AS "InvoiceDate";
> >
> > returns "unknown" data type instead of "date".
(I haven't seen the original message yet, so I'm replying to a reply)
Date literals are generally written as:
DATE '1/11/2003'
PostgreSQL will try to guess what type you meant with quoted strings in
expressions, but in the above there isn't enough context to do guess that
you meant a date really (it should probably actually be thought of as a
string in such cases).
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: How to quote date value?
2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 18:01 ` Re: How to quote date value? Gaetano Mendola <mendola@bigfoot.com>
2003-11-21 19:04 ` Re: How to quote date value? Stephan Szabo <sszabo@megazone.bigpanda.com>
@ 2003-11-21 19:16 ` terry@greatgulfhomes.com
1 sibling, 0 replies; 6+ messages in thread
From: terry@greatgulfhomes.com @ 2003-11-21 19:16 UTC (permalink / raw)
To: 'Stephan Szabo' <sszabo@megazone.bigpanda.com>; pgsql-sql
If you want an explicit date, then cast it like this:
SELECT '1/11/2003'::date AS "InvoiceDate";
Terry Fielder
Manager Software Development and Deployment
Great Gulf Homes / Ashton Woods Homes
terry@greatgulfhomes.com
Fax: (416) 441-9085
> -----Original Message-----
> From: pgsql-sql-owner@postgresql.org
> [mailto:pgsql-sql-owner@postgresql.org]On Behalf Of Stephan Szabo
> Sent: Friday, November 21, 2003 2:04 PM
> To: pgsql-sql@postgresql.org
> Subject: Re: [SQL] How to quote date value?
>
>
>
> On Fri, 21 Nov 2003, Gaetano Mendola wrote:
>
> > nobody wrote:
> > > I have found it in documentation, it is single quote. But
> it does not
> > > explain why
> > >
> > > SELECT '1/11/2003' AS "InvoiceDate";
> > >
> > > returns "unknown" data type instead of "date".
>
> (I haven't seen the original message yet, so I'm replying to a reply)
> Date literals are generally written as:
> DATE '1/11/2003'
>
> PostgreSQL will try to guess what type you meant with quoted
> strings in
> expressions, but in the above there isn't enough context to
> do guess that
> you meant a date really (it should probably actually be
> thought of as a
> string in such cases).
>
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: How to quote date value?
2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` Re: How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 18:01 ` Re: How to quote date value? Gaetano Mendola <mendola@bigfoot.com>
2003-11-21 19:04 ` Re: How to quote date value? Stephan Szabo <sszabo@megazone.bigpanda.com>
@ 2003-11-23 16:18 ` nobody <nobody@nowhere.near.here>
1 sibling, 0 replies; 6+ messages in thread
From: nobody @ 2003-11-23 16:18 UTC (permalink / raw)
To: pgsql-sql
Thanks, I learnt to use:
SELECT CAST('1/11/2003' AS DATE) AS invoice_number;
and it does what I would expect ;-).
"Stephan Szabo" <sszabo@megazone.bigpanda.com> wrote in message
news:20031121110022.U75942@megazone.bigpanda.com...
>
> On Fri, 21 Nov 2003, Gaetano Mendola wrote:
>
> > nobody wrote:
> > > I have found it in documentation, it is single quote. But it does not
> > > explain why
> > >
> > > SELECT '1/11/2003' AS "InvoiceDate";
> > >
> > > returns "unknown" data type instead of "date".
>
> (I haven't seen the original message yet, so I'm replying to a reply)
> Date literals are generally written as:
> DATE '1/11/2003'
>
> PostgreSQL will try to guess what type you meant with quoted strings in
> expressions, but in the above there isn't enough context to do guess that
> you meant a date really (it should probably actually be thought of as a
> string in such cases).
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>
^ permalink raw reply [nested|flat] 6+ messages in thread
end of thread, other threads:[~2003-11-23 16:18 UTC | newest]
Thread overview: 6+ messages (download: mbox mbox.gz follow: Atom feed)
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2003-11-21 09:39 How to quote date value? nobody <nobody@nowhere.near.here>
2003-11-21 10:53 ` nobody <nobody@nowhere.near.here>
2003-11-21 18:01 ` Gaetano Mendola <mendola@bigfoot.com>
2003-11-21 19:04 ` Stephan Szabo <sszabo@megazone.bigpanda.com>
2003-11-21 19:16 ` terry@greatgulfhomes.com
2003-11-23 16:18 ` nobody <nobody@nowhere.near.here>
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