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* Month/year between two dates
@ 2009-08-11 13:13 Bor <dborovnik@gmail.com>
2009-08-11 22:32 ` Re: Month/year between two dates Steve Crawford <scrawford@pinpointresearch.com>
2009-08-12 03:59 ` Re: Month/year between two dates ramasubramanian <ramasubramanian.g@renaissance-it.com>
0 siblings, 2 replies; 4+ messages in thread
From: Bor @ 2009-08-11 13:13 UTC (permalink / raw)
To: pgsql-sql
Hi to all,
I have a very simple question. Let's say that I have three records (id, date
from, date to):
1 2009-01-01 2009-08-31
2 2009-08-01 2009-08-10
3 2009-08-11 2009-08-31
Now I want to get records, "related" to a single month/year data (two
integers). For 2009/08 (int1 = 2009, int2 = 8) I should get all three
records, for 2009/05 only record 1, but for 2009/11 none of the records.
Is there any simple way to do this? A query would do :).
Thanks alot.
--
View this message in context: http://www.nabble.com/Month-year-between-two-dates-tp24917400p24917400.html
Sent from the PostgreSQL - sql mailing list archive at Nabble.com.
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Month/year between two dates
2009-08-11 13:13 Month/year between two dates Bor <dborovnik@gmail.com>
@ 2009-08-11 22:32 ` Steve Crawford <scrawford@pinpointresearch.com>
1 sibling, 0 replies; 4+ messages in thread
From: Steve Crawford @ 2009-08-11 22:32 UTC (permalink / raw)
To: Bor <dborovnik@gmail.com>; +Cc: pgsql-sql
Bor wrote:
> Hi to all,
>
> I have a very simple question. Let's say that I have three records (id, date
> from, date to):
>
> 1 2009-01-01 2009-08-31
> 2 2009-08-01 2009-08-10
> 3 2009-08-11 2009-08-31
>
> Now I want to get records, "related" to a single month/year data (two
> integers). For 2009/08 (int1 = 2009, int2 = 8) I should get all three
> records, for 2009/05 only record 1, but for 2009/11 none of the records.
>
> Is there any simple way to do this? A query would do :).
>
> Thanks alot.
>
Lots of ways. The following springs to mind but I'm sure there are
simpler ways (I'm assuming the date_from and date_to are data-type date
and you are stuck with using int for year and month).
Use date_trunc to convert any date in a month to the first of the month
and the following should work (untested):
...
date_trunc('month', date_from) <= (int1::text || '-' || int2::text ||
'-1')::date and
date_trunc('month', date_to) >= (int1::text || '-' || int2::text ||
'-1')::date
...
Cheers,
Steve
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Month/year between two dates
2009-08-11 13:13 Month/year between two dates Bor <dborovnik@gmail.com>
@ 2009-08-12 03:59 ` ramasubramanian <ramasubramanian.g@renaissance-it.com>
2009-08-13 00:58 ` Re: Month/year between two dates Jorge Godoy <jgodoy@gmail.com>
1 sibling, 1 reply; 4+ messages in thread
From: ramasubramanian @ 2009-08-12 03:59 UTC (permalink / raw)
To: Bor <dborovnik@gmail.com>; pgsql-sql
Dear Bor,
How you will 1 record for 2009/05 (if you use 2009/05 ) it will fetch
all the records as it is not having month 05
am i correct?
----- Original Message -----
From: "Bor" <dborovnik@gmail.com>
To: <pgsql-sql@postgresql.org>
Sent: Tuesday, August 11, 2009 6:43 PM
Subject: [SQL] Month/year between two dates
>
> Hi to all,
>
> I have a very simple question. Let's say that I have three records (id,
> date
> from, date to):
>
> 1 2009-01-01 2009-08-31
> 2 2009-08-01 2009-08-10
> 3 2009-08-11 2009-08-31
>
> Now I want to get records, "related" to a single month/year data (two
> integers). For 2009/08 (int1 = 2009, int2 = 8) I should get all three
> records, for 2009/05 only record 1, but for 2009/11 none of the records.
>
> Is there any simple way to do this? A query would do :).
>
> Thanks alot.
> --
> View this message in context:
> http://www.nabble.com/Month-year-between-two-dates-tp24917400p24917400.html
> Sent from the PostgreSQL - sql mailing list archive at Nabble.com.
>
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Month/year between two dates
2009-08-11 13:13 Month/year between two dates Bor <dborovnik@gmail.com>
2009-08-12 03:59 ` Re: Month/year between two dates ramasubramanian <ramasubramanian.g@renaissance-it.com>
@ 2009-08-13 00:58 ` Jorge Godoy <jgodoy@gmail.com>
0 siblings, 0 replies; 4+ messages in thread
From: Jorge Godoy @ 2009-08-13 00:58 UTC (permalink / raw)
To: ramasubramanian <ramasubramanian.g@renaissance-it.com>; Bor <dborovnik@gmail.com>; pgsql-sql
I think he wanted something like:
test=# create table month_test(id serial primary key, start_date date not
null, end_date date not null);
CREATE TABLE
test=# insert into month_test (start_date, end_date) values
('2009-01-01'::date, '2009-08-31'::date);
INSERT 0 1
test=# insert into month_test (start_date, end_date) values
('2009-08-01'::date, '2009-08-10'::date);
INSERT 0 1
test=# insert into month_test (start_date, end_date) values
('2009-08-11'::date, '2009-08-31'::date);
INSERT 0 1
test=# select * from month_test;
id | start_date | end_date
----+------------+------------
1 | 2009-01-01 | 2009-08-31
2 | 2009-08-01 | 2009-08-10
3 | 2009-08-11 | 2009-08-31
(3 rows)
test=# select * from month_test where (start_date, end_date) overlaps
('2009-05-01'::date, '2009-05-31'::date);
id | start_date | end_date
----+------------+------------
1 | 2009-01-01 | 2009-08-31
(1 row)
test=#
--
Jorge Godoy <jgodoy@gmail.com>
On Wed, Aug 12, 2009 at 00:59, ramasubramanian <
ramasubramanian.g@renaissance-it.com> wrote:
> Dear Bor,
> How you will 1 record for 2009/05 (if you use 2009/05 ) it will fetch all
> the records as it is not having month 05
> am i correct?
>
> ----- Original Message ----- From: "Bor" <dborovnik@gmail.com>
> To: <pgsql-sql@postgresql.org>
> Sent: Tuesday, August 11, 2009 6:43 PM
> Subject: [SQL] Month/year between two dates
>
>
>
>> Hi to all,
>>
>> I have a very simple question. Let's say that I have three records (id,
>> date
>> from, date to):
>>
>> 1 2009-01-01 2009-08-31
>> 2 2009-08-01 2009-08-10
>> 3 2009-08-11 2009-08-31
>>
>> Now I want to get records, "related" to a single month/year data (two
>> integers). For 2009/08 (int1 = 2009, int2 = 8) I should get all three
>> records, for 2009/05 only record 1, but for 2009/11 none of the records.
>>
>> Is there any simple way to do this? A query would do :).
>>
>> Thanks alot.
>> --
>> View this message in context:
>> http://www.nabble.com/Month-year-between-two-dates-tp24917400p24917400.html
>> Sent from the PostgreSQL - sql mailing list archive at Nabble.com.
>>
>>
>> --
>> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
>> To make changes to your subscription:
>> http://www.postgresql.org/mailpref/pgsql-sql
>>
>
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql
>
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-- links below jump to the message on this page --
2009-08-11 13:13 Month/year between two dates Bor <dborovnik@gmail.com>
2009-08-11 22:32 ` Steve Crawford <scrawford@pinpointresearch.com>
2009-08-12 03:59 ` ramasubramanian <ramasubramanian.g@renaissance-it.com>
2009-08-13 00:58 ` Jorge Godoy <jgodoy@gmail.com>
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