Обсуждение: Need clarification
how can retrieve rows where the datedifference is more than 30... assume there exists a field named 'datacreated' which is of type 'date'. I need to compare it with the current date and need to extract the matched rows.... thanks in advance. Palanivel Important Email Information :- The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. If you are not the intended addressee please contact the sender and dispose of this e-mail immediately.
O palanivel.kumaran@scandent.com έγραψε στις May 23, 2005 : > > > > > how can retrieve rows where the datedifference is more than 30... more than 30 in what units? years,days,milliseconds?? > assume there exists a field named 'datacreated' which is of type 'date'. I > need to compare it with the current date and need to extract the matched > rows.... > select * from footable where datacreated = now()::date; > thanks in advance. > > Palanivel > > Important Email Information :- The information in this email is > confidential and may be legally privileged. It is intended solely for > the addressee. Access to this email by anyone else is unauthorized. If > you are not the intended recipient, any disclosure, copying, distribution or > any action taken or omitted to be taken in reliance on it, is prohibited > and may be unlawful. If you are not the intended addressee please contact > the sender and dispose of this e-mail immediately. > > > ---------------------------(end of broadcast)--------------------------- > TIP 3: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly > -- -Achilleus
Your're looking for the interval data type. timestamp - timestamp or date - date can be compared with interval CURRENT_TIMESTAMP - '4d'::interval => today - 4 days |-----Original Message----- |From: palanivel.kumaran@scandent.com |[mailto:palanivel.kumaran@scandent.com] |Sent: Montag, 23. Mai 2005 11:52 |To: pgsql-sql@postgresql.org |Subject: [SQL] Need clarification | | | | | | |how can retrieve rows where the datedifference is more than 30... |assume there exists a field named 'datacreated' which is of |type 'date'. I |need to compare it with the current date and need to extract |the matched |rows.... | |thanks in advance. | |Palanivel | |Important Email Information :- The information in this email is |confidential and may be legally privileged. It is |intended solely for |the addressee. Access to this email by anyone else is |unauthorized. If |you are not the intended recipient, any disclosure, copying, |distribution or |any action taken or omitted to be taken in reliance on it, is |prohibited |and may be unlawful. If you are not the intended addressee |please contact |the sender and dispose of this e-mail immediately. | | |---------------------------(end of |broadcast)--------------------------- |TIP 3: if posting/reading through Usenet, please send an appropriate | subscribe-nomail command to majordomo@postgresql.org so that your | message can get through to the mailing list cleanly |
Sorry, I didn't get ur point...please, tell me exact query to extract the
rows from a table A which contains a date field named DTE whose difference
is 30 days as compared to the current date...
Thanks & Regards
Palanivel P.K
KÖPFERL Robert
<robert.koepferl@so To: "'palanivel.kumaran@scandent.com'"
norys.at> <palanivel.kumaran@scandent.com>, pgsql-sql@postgresql.org
Sentby: cc: pgsql-sql-owner@pos Subject: Re: [SQL]
Needclarification tgresql.org
05/23/2005 04:34 PM
Your're looking for the interval data type.
timestamp - timestamp
or date - date can be compared with interval
CURRENT_TIMESTAMP - '4d'::interval => today - 4 days
|-----Original Message-----
|From: palanivel.kumaran@scandent.com
|[mailto:palanivel.kumaran@scandent.com]
|Sent: Montag, 23. Mai 2005 11:52
|To: pgsql-sql@postgresql.org
|Subject: [SQL] Need clarification
|
|
|
|
|
|
|how can retrieve rows where the datedifference is more than 30...
|assume there exists a field named 'datacreated' which is of
|type 'date'. I
|need to compare it with the current date and need to extract
|the matched
|rows....
|
|thanks in advance.
|
|Palanivel
|
|Important Email Information :- The information in this email is
|confidential and may be legally privileged. It is
|intended solely for
|the addressee. Access to this email by anyone else is
|unauthorized. If
|you are not the intended recipient, any disclosure, copying,
|distribution or
|any action taken or omitted to be taken in reliance on it, is
|prohibited
|and may be unlawful. If you are not the intended addressee
|please contact
|the sender and dispose of this e-mail immediately.
|
|
|---------------------------(end of
|broadcast)---------------------------
|TIP 3: if posting/reading through Usenet, please send an appropriate
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am 23.05.2005, um 16:31:55 +0530 mailte palanivel.kumaran@scandent.com folgendes:
>
>
>
>
> Sorry, I didn't get ur point...please, tell me exact query to extract the
> rows from a table A which contains a date field named DTE whose difference
> is 30 days as compared to the current date...
test=# create table datediff (start date);
CREATE TABLE
test=# insert into datediff values ('1966/08/30');
INSERT 153382679 1
test=# insert into datediff values ('2005/05/23');
INSERT 153382680 1
test=# select * from datediff ; start
------------1966-08-302005-05-23
(2 Zeilen)
test=# select * from datediff where CURRENT_DATE - start > 10; start
------------1966-08-30
(1 Zeile)
test=# select * from datediff where CURRENT_DATE - start < 10; start
------------2005-05-23
(1 Zeile)
Btw.: please no TOFU, read http://en.wikipedia.org/wiki/TOFU
Andreas
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