Displaying Date value using ASP

Dear all,
I am currently trying to display the value in an Oracle date
field using ASP. However, I encountered the following error :
Microsoft OLE DB Provider for ODBC Drivers error '80020009'
Multiple-step OLE DB operation generated errors. Check each OLE
DB status value, if available. No work was done.
My code is as follow:
set abc= server.createobject("adodb.recordset")
abc.activeconnection = gDBConnectString
sqlstring = "select c_datetime from counter_tbl where c_variable
= 'counter1'"
abc.open sqlstring
response.write abc("c_datetime")
I have tried using to_Date to format the field but when I try to
display it, there will be the same errors again. The SQL
statement executes successfully in SQLPLUS.
Please help. Thanks!
Regards,
Dara.

Hi Colin,
I may be misinterpreting your question -- so I don't know how much this will help you, but the Oracle-to-java mapping for database table columns with the DATE datatype changed in the "ojdbc14.jar" driver (from the "classes12.zip" driver), from "java.sql.Timestamp" to "java.sql.Date".
However, since I saw no details in your post regarding your environment/platform, like I said before, this may not help you much!
In any case, the mappings (Oracle-to-java) are detailed in the Oracle documentation -- which is available from the Tahiti Web site (in case you didn't know). Have you checked the documentation?
Good Luck,
Avi.

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Need a maximum date value using group by

Create table student (dept number(10), dep_name varchar2(10),join_date date,years_attended number(10),end_date date);
insert into student values (1,'I',to_date('3/7/1917','MM/DD/YYYY'),4,to_date('8/26/1987','MM/DD/YYYY'));
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insert into student values (4,'C',to_date('1/17/1927','MM/DD/YYYY'),4,to_date('8/26/1955','MM/DD/YYYY'));
insert into student values (4,'C',to_date('6/10/1929','MM/DD/YYYY'),30,to_date('8/26/1967','MM/DD/YYYY'));
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commit;I need a maximum date value join_date for each department. If max(join_date) has two records for each dept then max(end_date) should be considered. I have used a below select query
select * from student where join_date in (select
max(join_date) from student group by dept);which gives me the following result
1     D     1/1/1920     5     8/26/1994
1     C     1/1/1920     6     8/26/1945
2     I     8/16/1916     9     8/26/1923
2     D     8/16/1916     10     8/26/1987
3     D     7/28/1920     6     8/26/1945
3     I     7/28/1920     8     8/26/1965
4     I     6/10/1929     1     8/26/1943
4     C     6/10/1929     30     8/26/1967
5     D     2/10/1931     2     8/26/1943
5     I     2/10/1931     24     8/26/1962But I am looking for the result which gives me only one maximum value for each dept column. First it should look for maximum value of join_date, if two records has same join_date then max(end_date) should be considered. The result should be sumthing like this
1     D     1/1/1920     5     8/26/1994
2     D     8/16/1916     10     8/26/1987
3     I     7/28/1920     8     8/26/1965
4     C     6/10/1929     30     8/26/1967
5     I     2/10/1931     24     8/26/1962Can you please tell me how to rewrite the select query to get the above results.
Edited by: user11872870 on Aug 2, 2011 5:29 PM
Edited by: user11872870 on Aug 2, 2011 5:36 PM

Hi,
That's called a Top-N Query , and here's one way to do it:
WITH     got_r_num     AS
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                               ORDER BY         join_date     DESC
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Thanks for posting the CREATE TABLE and INSERT statments! That's very helpful.
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Regards,

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from
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----- Original Message -----
From: "grschroeder" <grschroeder@y...>
Sent: Wednesday, July 31, 2002 12:00 PM
Subject: [SunONE-JATO] Re: Using an object to store and display data
Craig,
I think it all finally makes sense. First, your assumption is
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--- In SunONE-JATO@y..., "Craig V. Conover" <craig.conover@s...>
wrote:
Greg,
see below...
grschroeder wrote:
Thanks for the help Craig. I looked at the sample code that makes
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This is correct.
The part I'm a little
unclear on still is how to interface this BeanAdapterModel( which
is
a very basic model ) that I now have with a query model toactually
interact with the database.
Not sure what you mean by "interface this BeanAdapterModel ... witha
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a custom JavaBean via the BeanAdpterModel wrapper, and from the
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So it looks like this: ViewBean > BeanAdapterModel(Custom JavaBean)
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If my assumptions above are correct, then the custom JavaBean cansimply
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Greg
--- In SunONE-JATO@y..., "Craig V. Conover" <craig.conover@s...>
wrote:
I think the best approach would be to treat your Domain Objects
(DO) as
the Database (the enterprise tier) from JATO's perspective. You
could
create custom models that interface with our DO's and then the
JATO
Views could easily bind to the custom DO models just like anyother
model. This should eliminate the need for pushing data/objectsfrom
>
view
to model to database.
There is a JATO class called BeanAdapterModel that might be just
what
you need, however, I am not experienced with using it. Maybe
someone
else on my team or in the community could better explain how to
use
>
this
class.
craig
grschroeder wrote:
Venki,
Thanks for the response. Actually, I'm not sure if I can answer
all
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that
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My
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set
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--- In SunONE-JATO@y..., Venki <heyvenki@y...> wrote:
OK grschroeder , first let me get this straight:
0. Are you going to pass this object to the model, or are u
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1. Is there any specific reason for this approach you are
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~Venki
grschroeder wrote:I'm fairly new to JATO, but I think I now
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basic understanding
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instead
of having the Viewbean and Model interact directly with each
other.
Basically I would like to have the Model set data in the object
stored in the session so that the Viewbean can pull it out to
display
it. And vice versa, once the user modifies the data and is
ready
>
to
persist it, I would like to have the Viewbean set data in the
object
stored in the session so that the Model can pull it out to
store
>it
in the database. I'm not sure what the best approach would be
to
accomplish this. Any help you could give would be greatly
appreciated.
Thanks,
Greg
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
Service.
Venki
IT Solutions
#6, Pycrofts Garden Road, Nugambakkam, Chennai - 600 006
91-44-4925740(Home) 91-44-8212877(Work)
* Luck is what happens when Preparation meets Opportunity.
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp

Personally, I think there is little or no value to creating a "domain"
object that itself relies on a JATO QueryModel internally, but hides that
fact and requires use of BeanAdapterModel.
It would be more appropriate (and much less work, and more scalable) to just
derive a QueryModel subclass and add the domain-specific behavior to the
model. In other words, what's the point of creating an object that hides
JATO inside it when you're running in JATO to begin with? Now if the domain
object were doing plain JDBC, and thus trying to be JATO independent, that
would be different. However, you could still implement the Model interface
on the object (or use BeanAdapterModel) to integrate it seamlessly with the
View tier.
Todd
----- Original Message -----
From: "grschroeder" <grschroeder@y...>
Sent: Wednesday, July 31, 2002 12:00 PM
Subject: [SunONE-JATO] Re: Using an object to store and display data
Craig,
I think it all finally makes sense. First, your assumption is
correct regarding the process flow. The ViewBean will interact with
a custom Javabean which will then in turn interact with a SQL Model
to access the database. So now let me make sure I understand what I
need to do. Basically the custom Javabean will have a method to get
the SQLModel. I would then invoke the setValue method on the
SQLModel and call the appropriate execute method( e.g.,
executeUpdate, etc. ) just like I would do from a ViewBean. Does
this sound correct?
Thanks,
Greg
--- In SunONE-JATO@y..., "Craig V. Conover" <craig.conover@s...>
wrote:
Greg,
see below...
grschroeder wrote:
Thanks for the help Craig. I looked at the sample code that makes
use of the BeanAdapterModel. Basically it looks like it allows a
view to interact with a bean the same way it would interact with
any
other model. That part I think I understand.
This is correct.
The part I'm a little
unclear on still is how to interface this BeanAdapterModel( which
is
a very basic model ) that I now have with a query model toactually
interact with the database.
Not sure what you mean by "interface this BeanAdapterModel ... witha
query model". Does this mean that you have a ViewBean the interactswith
a custom JavaBean via the BeanAdpterModel wrapper, and from the
JavaBean you are interacting with the SQL Model?
So it looks like this: ViewBean > BeanAdapterModel(Custom JavaBean)
SQL Model > RDBMS
That's what I am reading anyway. Please explain this to me.
Would I need to make direct JDBC calls
from my custom model instead of letting JATO dynamically create
the
calls for me?
If my assumptions above are correct, then the custom JavaBean cansimply
use the SQL Model in exactly the same manner as the ViewBean,otherwise,
if no SQL Model is involved, then yes, you need to handle JDBCdirectly,
which is fine, if you do it "right" (connection pooling, result set
handling, etc.).
Thanks,
Greg
--- In SunONE-JATO@y..., "Craig V. Conover" <craig.conover@s...>
wrote:
I think the best approach would be to treat your Domain Objects
(DO) as
the Database (the enterprise tier) from JATO's perspective. You
could
create custom models that interface with our DO's and then the
JATO
Views could easily bind to the custom DO models just like anyother
model. This should eliminate the need for pushing data/objectsfrom
>
view
to model to database.
There is a JATO class called BeanAdapterModel that might be just
what
you need, however, I am not experienced with using it. Maybe
someone
else on my team or in the community could better explain how to
use
>
this
class.
craig
grschroeder wrote:
Venki,
Thanks for the response. Actually, I'm not sure if I can answer
all
of your questions because those are some of the same questions
that
we're trying to answer ourselves. Basically, what we're trying
to
>do
is incorporate our domain object model into the JATO framework.
My
thinking was that one way we could accomplish this was by
storing
>a
Javabean object in the HTTPSession to represent an object in the
domain model, and that the Viewbean and JATO Model could get and
set
data from there. If you have a better suggestion of how to
accomplish this, I'm definitely open to hearing it.
Thanks,
Greg
--- In SunONE-JATO@y..., Venki <heyvenki@y...> wrote:
OK grschroeder , first let me get this straight:
0. Are you going to pass this object to the model, or are u
going
>
to pass the session object to the model?
1. Is there any specific reason for this approach you are
taking?
2. Will there be a notification from the object u havementioned
>to
have the model persist the data?
3. What about the reverse case, when the model refreshes the
data,
how are you going to refresh you object?
4. The JavaBean Object that u are talking about, is it your own
object or is it implementation of an existing JATO interface?
~Venki
grschroeder wrote:I'm fairly new to JATO, but I think I now
have
>a
basic understanding
of how Viewbeans and Models interact. However, I want to
incorporate
the use of a Javabean object that will be stored in the HTTP
session
and will act as the connection between the Viewbean and Model
instead
of having the Viewbean and Model interact directly with each
other.
Basically I would like to have the Model set data in the object
stored in the session so that the Viewbean can pull it out to
display
it. And vice versa, once the user modifies the data and is
ready
>
to
persist it, I would like to have the Viewbean set data in the
object
stored in the session so that the Model can pull it out to
store
>it
in the database. I'm not sure what the best approach would be
to
accomplish this. Any help you could give would be greatly
appreciated.
Thanks,
Greg
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
Service.
Venki
IT Solutions
#6, Pycrofts Garden Road, Nugambakkam, Chennai - 600 006
91-44-4925740(Home) 91-44-8212877(Work)
* Luck is what happens when Preparation meets Opportunity.
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
To download the latest version of JATO, please visit:
http://www.sun.com/software/download/developer/5102.html
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp

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