Apple

wow this is great! and I even understand the ‘Derived’ selection now. I still don’t see how to set the sort direction. Oscar’s example of the SQL it generates shows an order by of ASC. what if I want DESC?

enquiring minds need this stuff!!!

On Jul 14, 2015, at 1:46 PM, Chuck Hill <email@hidden> wrote:

Maybe I was right the first time. :-) I know that I have used this before, somewhere. So Calven, try something like this (remove the Read Format) and make it Read Only.

<Entity_Modeler_-_CadreCore_CadreCore_eomodelgroup_-_Eclipse_SDK_-__Users_chuck_Documents_workspace[1].png>

Chuck

On 2015-07-14, 10:01 AM, "Oscar González" wrote:

Hi all,
I used a derived column like this (EXTRACT(YEAR FROM fechaIngreso) * 100 + EXTRACT(MONTH FROM fechaIngreso))

and it generates this sql

SELECT (EXTRACT(YEAR FROM t0.fechaingreso) * 100 + EXTRACT(MONTH FROM t0.fechaingreso)) FROM ep_empxcom t0

ORDER BY (EXTRACT(YEAR FROM t0.fechaingreso) * 100 + EXTRACT(MONTH FROM t0.fechaingreso)) ASC

It works with postgres, I think it will work in oracle too.

Saludos,

Oscar.

Subject: Re: EOFetchSpecification - sorting by partial date
From: email@hidden
Date: Tue, 14 Jul 2015 11:21:32 -0400
To: email@hidden
CC: email@hidden

I have to sort tens of thousands of rows. :(

It looks like I have to resort to creating a view in the database.

On Jul 14, 2015, at 11:18 AM, Samuel Pelletier <email@hidden> wrote:

I do not think so, the table reference may be required for more complex select with joins and the frameworks cannot really know when put it or not (or it would require a deep analyses of the query)

Unless you have to sort thousands of rows and most of them will never be displayed or used, I would sort in memory.

If you do not specify a fetch limit, you can probably sort in memory...

Samuel

Le 2015-07-14 à 10:46, Calven Eggert <email@hidden> a écrit :

Is there a way in WO to remove the t0 from the order by clause?

On Jul 14, 2015, at 10:29 AM, Theodore Petrosky <email@hidden> wrote:

interesting this worked in postgresql:

SELECT (EXTRACT(YEAR FROM c_materials_close_ns_timestamp) * 100 + EXTRACT(MONTH FROM c_materials_close_ns_timestamp)) AS t_test FROM t_grid t0 ORDER BY t_test ASC’

notice the ORDER BY t_test has no table listed if I put in t0 it fails i.e. t0.t_test

SELECT (EXTRACT(YEAR FROM c_materials_close_ns_timestamp) * 100 + EXTRACT(MONTH FROM c_materials_close_ns_timestamp)) AS t_test  FROM t_grid t0 ORDER BY t0.t_test ASC;
LOG:  statement: SELECT (EXTRACT(YEAR FROM c_materials_close_ns_timestamp) * 100 + EXTRACT(MONTH FROM c_materials_close_ns_timestamp)) AS t_test  FROM t_grid t0 ORDER BY t0.t_test ASC;
ERROR:  column t0.t_test does not exist
LINE 1: ...ns_timestamp)) AS t_test  FROM t_grid t0 ORDER BY t0.t_test ...
^
but this did:

colorgrid=# SELECT (EXTRACT(YEAR FROM c_materials_close_ns_timestamp) * 100 + EXTRACT(MONTH FROM c_materials_close_ns_timestamp)) AS t_test  FROM t_grid t0 ORDER BY t_test ASC;
LOG:  statement: SELECT (EXTRACT(YEAR FROM c_materials_close_ns_timestamp) * 100 + EXTRACT(MONTH FROM c_materials_close_ns_timestamp)) AS t_test  FROM t_grid t0 ORDER BY t_test ASC;
t_test
--------
199906
199908
199908
199908
199909
199909

On Jul 14, 2015, at 9:59 AM, Calven Eggert <email@hidden> wrote:

As it turns out, this method does not work in the WO application. (It does work when executing it from a SQL command line) The fetch spec fails when the new column is included the sort:

EvaluateExpression failed: <com.webobjects.jdbcadaptor.OraclePlugIn$OracleExpression: SELECT (EXTRACT(YEAR FROM APPT_DATE) * 100 + EXTRACT(MONTH FROM APPT_DATE)) AS "YEARMTH", FROM the_table t0 ORDER BY t0.YEARMTH ASC,

  Next exception:SQL State:42000 -- error code: 904 -- msg: ORA-00904: "T0"."YEARMTH": invalid identifier

If the new column is removed from the sort then the select statement works:
SELECT (EXTRACT(YEAR FROM APPT_DATE) * 100 + EXTRACT(MONTH FROM APPT_DATE)) AS “YEARMTH" FROM the_table t0

This is the new column created in EntityModeler:

(EXTRACT(YEAR FROM APPT_DATE) * 100 + EXTRACT(MONTH FROM APPT_DATE)) AS “YEARMTH"

Any other ideas, other than creating a new view in the database or new column in the table?

Le 2015-07-13 à 16:48, Calven Eggert <email@hidden> a écrit :

Thanks Chuck!

I had to add the ŒAS¹ clause to the Read Format, otherwise, I
received an invalid SQL statement. I then took advantage of the
situation by concatenating my two values (year and month) and padded
the month so that I would always get a 6 digit string so I could then
do some comparisons with the value for a report.

Read Format:
EXTRACT(YEAR FROM APPT_DATE) || LPAD(EXTRACT(MONTH FROM APPT_DATE),
2, '0') AS YM

On Jul 13, 2015, at 4:10 PM, Chuck Hill <email@hidden> wrote:

Sorry, not derived. Battling too many tasks this morning. A read
format should do it (so the same column defined as three class
property attributes: theDate, theDateYear and theDateMonth (feel free
to pick better names :-)
<DE4C48C1-45C2-420F-A017-59C3BC72CBD6.png>

On 2015-07-13, 1:05 PM, "Theodore Petrosky" wrote:

I just looked in there. How do you set that up? I tried playing but
I guess I don¹t understand the derived column.

Thanks Chuck!

On Jul 13, 2015, at 2:20 PM, Chuck Hill <email@hidden> wrote:

Just a note that you can use the extract (year from theDate) and
extract (month from theDate) in a derived column in EntityModeler
which avoids the need for a view.

On 2015-07-13, 11:16 AM, "Theodore Petrosky" wrote:

you didn¹t mention your database, but I have done things like this
with a view.

I created a view with the appropriate columns and in the select
statement I put in the order by

CREATE OR REPLACE VIEW myNewView AS SELECT info1, info2, theDate
FROM theTable ORDER BY extract (year from theDate) desc, extract
(month from theDate) asc;

A one point I actually set up some rules to make the ŒVIEW¹
updatable.

YMMV obviously depending on you access to the backend, and if Views
are supported.

Ted

On Jul 13, 2015, at 12:02 PM, Calven Eggert <email@hidden> wrote:
Hi, All
I have a fetch that sorts records by three columns where one of the
columns is a date (timestamp). Is there a way to sort the date by
month & year only?
Thanks,
Calven
Here is the current fetch:
...
EOSortOrdering sortBySource = new EOSortOrdering("source",
EOSortOrdering.CompareCaseInsensitiveAscending);
EOSortOrdering sortByAppt = new EOSortOrdering("appointmentDate",
EOSortOrdering.CompareCaseInsensitiveAscending);
    EOSortOrdering sortBySite = new EOSortOrdering(³site",
EOSortOrdering.CompareCaseInsensitiveAscending);
    NSMutableArray orderings = new NSMutableArray();
    orderings.addObject(sortBySource);
    orderings.addObject(sortByAppt);
    orderings.addObject(sortBySite);
EOFetchSpecification spec = new EOFetchSpecification(³records",
qual, orderings);
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

o.com
This email sent to email@hidden

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

inc.com

This email sent to email@hidden

Calven

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

com

This email sent to email@hidden

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

om

This email sent to email@hidden

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
om

This email sent to email@hidden

Calven

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

Calven

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

Calven

_______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (email@hidden) Help/Unsubscribe/Update your email sent to email@hidden

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden