Ensure truncated date in database column

Other than using a BEFORE trigger, is there any way to ensure that only the YEAR, MONTH and DAY components ( i.e. truncated date) is stored in a database column? Is there a special datatype which will auto trunc the date? If not what would be the best way to do this other than using a BEFORE trigger?
Thanks in anticipation

user4900730 wrote:
The reason for wanting to always storea truncated date is if a PL/SQL developer does NOT truncate a date IN parameter and in the midst of the code compares it with a date that was truncated the comparison will return FALSE. In an application that deals with dates without the HRS/MINS/SECONDS components and compares these datatypes expecting only the yyyy,mm,dd to be compared it would be prudent to ensure that the database only stores the yyyy,mm,dd components and NOT rely on the PL/SQL developer to remember to truncate the input parameter.
I wish there was a datatype variation of DATE that guaranteed that it only stored the yyyy,mm,dd.
I suppose I could create a view that exposes the truncated date column OR use a trigger.
What are your opinions VIEW or TRIGGER?And once again, this does not require Oracle to do something unusual with the storage of the data - only that you treat it accordingly in your SQL. See http://edstevensdba.wordpress.com/2011/04/07/nls_date_format/

Similar Messages

Inserting date into database column automatically

This may be a silly question. But how to add a date(system date) in to the database column automatically when a user submit a form.???
thanks
san

Hi,
Use default values?
SQL>create table t
2 (
3 a number,
4 constraint def_val_b b date default sysdate
5 );
Table created.
SQL>insert into t (a) values (1);
1 row created.
SQL>select * from t;
A B
1 22/11/05
1 row selected.Regards,
Yoann.

How to create a variance on data that exists iIn only one database column

How to create a variance on data that exists iIn only one database column?
I'm trying to create a calculation to show the difference between the budgets for two different years in a Discoverer crosstab query.
I'm using the lag function to repeat the value of a column for the current year and the year before.

Lag and lead seems to be the only choice and they work excellent. Checkout the new 10g Database features. There is new SQL modal clause which might give additional and powerful analytics but in this case lag and lead should be sufficient.
regards
http://www.infocaptor.com/workbook-dump.php

Checking whether data exists in a BLOB type database column in Forms 6i

I am developing an application regarding inventory of a plant's spare parts. I am storing photo (.bmp) of spares in the database in a column of BLOB type. Once user punches spare's code, form displays spares data on screen using EXECUTE_QUERY. At this stage I want to check whether picture (.bmp) data was found in BLOB type database column or not. I want to take action accordingly. How to check this. If it would be a numeric column, I would have checked NULL but NULL does not work with BLOB type coloumns.
Pl. help.
Thanks in anticipation.

Did you look in the database documentation? The DBMS_LOB package has the method you need: getlength().
This was more of a database question than a Forms question, so you'd probably have more luck with these types of questions on one of the other forums, like the database or SQL forums.
Regards,
Robin Zimmermann
Forms Product Management

How to Select data using same column name from 3 remote database

Hi,
Can anyone help me on how to get data with same column names from 3 remote database and a single alias.
Ex.
SELECT *
a.name, b.status, SUM(b.qty) qantity, MAX(b.date) date_as_of
FROM
*((table1@remotedatabase1, table1@remotedatabase2, table1@remotedatabase3)a,*
*(table1@remotedatabase1, table1@remotedatabase2, table1@remotedatabase3)b)*
WHERE b.dept = 'finance'
AND a.position = 'admin'
AND a.latest = 'Y' AND (b.status <> 'TRM') AND b.qty > 0;
GROUP BY a.name, b.status ;
NOTE: the bold statements is just an example of what I want to do but I always gets an error beacause of ambiguous columns.
Thanks in advnce. :)
Edited by: user12994685 on Jan 4, 2011 9:42 PM

user12994685 wrote:
Can anyone help me on how to get data with same column names from 3 remote database and a single alias.Invalid. This does not make sense and breaks all scope resolution rules. And whether this is in a single database, or uses tables across databases, is irrelevant.
Each object must be uniquely identified. So you cannot do this:
select * from (table1@remotedatabase1, table1@remotedatabase2, table1@remotedatabase3) a3 objects cannot share the same alias. Example:
SQL> select * from (dual, dual) d;
select * from (dual, dual) d
ERROR at line 1:
ORA-00907: missing right parenthesisYou need to combine the objects - using a join or union or similar. So it will need to be done as follows:
SQL> select * from (select * from dual d1, dual d2) d;
select * from (select * from dual d1, dual d2) d
ERROR at line 1:
ORA-00918: column ambiguously definedHowever, we need to have unique column names in a SQL projection - so the join of the tables need to project a unique set of columns. Thus:
SQL> select * from (select d1.dummy as dummy1, d2.dummy as dummy2 from dual d1, dual d2) d;
DUM DUM
X X
SQL> I suggest that you look closely at what scope is and how it applies in the SQL language - and ignore whether the objects referenced are local or remote as it has no impact to fundamentals of scope resolution.

Save /ADD Grid Control Columns Data in database

Hello All,
Can any one suggest me how we add or save or update the grid control columns fields data into databases.
My problem is I have 2 tabs in user defined screen Main and issue tabs . when we click the issue tabs then items data in main tab matrix is filled in issue tab grid for this i create user defind table and register it with my user defined object .and
fill somoe of this table fields using reocord set . Now I want to add these grid data in database .
how we achieve this .Please guide me

Arvind,
You may want to review the documentation on the Grid Object in the SDK Help documentation as this may help with your question.
Eddy

Data in ALV column getting truncated

Hi All,
Need help.
The problem is:
In my ALV grid(Obj Oriented) there are 15-16 columns.Of this the last column can
have a maximum length of 1000 characters.I have given outlen in field catalogue as 1000 and also marked cwidth_opt as 'X'.Despite this the data
in last column is getting tuncated.Please suggest

Hi,
You cannot display total 1000 chars in the cell. I guess when u view the same in Print preview, u can find all 1000 chars.
But one thing is u cannot view all 1000 chars as it is in the view.
revrt back if any issues.
regards,
Naveen

How can I Move data from one column to another in my access table?

I have two columns, one that stores current month’s data and one that stores last month’s data. Every month data from column 2 (this month’s data) needs to be moved to column 1 that holds last month’s data. I then null out column 2 so I can accumulates this month’s data.
I understand how to drop a column or add a column, how do I transfer data from one column to another.
Here is my trial code:
<cfquery name="qQueryChangeColumnName" datasource="#dsn#">
ALTER TABLE leaderboard
UPDATE leaderboard SET points2 = points3
</cfquery>
Unfortunately, I get the following error:
Error Executing Database Query.
[Macromedia][SequeLink JDBC Driver][ODBC Socket][Microsoft][ODBC Microsoft Access Driver] Syntax error in ALTER TABLE statement.
How can I transfer my data with the alter table method?

I looked up the Access SQL reference (which is probably a
good place to start when having issues with Access SQL), and
it suggests you probably need a WHERE clause in there.
I agree the documentation is a good place to start. But you should not need a WHERE clause here.
Too few parameters. Expected 1.
If you run the SQL directly in Access, what are the results? At the very least, it should provide a more informative error message..

Need to Convert Comma separated data in a column into individual rows from

Hi,
I need to Convert Comma separated data in a column into individual rows from a table.
Eg: JOB1 SMITH,ALLEN,WARD,JONES
OUTPUT required ;-
JOB1 SMITH
JOB1 ALLEN
JOB1 WARD
JOB1 JONES
Got a solution using Oracle provided regexp_substr function, which comes handy for this scenario.
But I need to use a database independent solution
Thanks in advance for your valuable inputs.
George

Go for ETL solution. There are couple of ways to implement.
If helps mark

Insert/update japanese langunage data in a column of datatype varchar2(..)

Hello,
I am using ORACLE DATABASE 11g (EE) and RHEL 5.
I want to insert/update japanese language data in a column which has the datatype as varchar2(256).
I tried to change the NLS_LANGUAGE and NLS_TERRITORY parameters with 'ALTER SESSION set ...' command but no effect.
I tried to bounce back ( shutdown and startup ) the DB but still no effect.
I tried to inset the NLS_LANGUAGE and NLS_TERRITORY in init.ora file but still no use.
If anybody knows the detail steps which i have mentioned above .... let me know. Might be that i am wrong in my method.
Can you please guide me how to change the language of DB for a perticular session to japanese ???
Thanks in advance...
Edited by: VJ4 on May 9, 2011 6:21 PM

VJ4 wrote:
Thanks for the info.
Yes i tried with UNISTR function and was able to insert the data successfully.
but the point is that we can't remember unicode for each of the letter. It's their any method that we can directly insert japanese character using an insert.
As you said :-
Note that changing database character set is something complicated that requires many steps.
Can you please provide me some links or some stuffs to study about the detail steps of chaining database character set.
I have gone through the Oracle online documentation.. if you can pin point any good link in it you can else provide me some other stuff.
Thanks .You will need to convert your database characterset to AL32UTF8. This is not a trivial exercise if your database already has data in it. See these MOS Docs
Changing the NLS_CHARACTERSET to AL32UTF8 / UTF8 (Unicode) (Doc ID 260192.1)
AL32UTF8 / UTF8 (Unicode) Database Character Set Implications (Doc ID 788156.1)
http://download.oracle.com/docs/cd/E11882_01/server.112/e10729/ch11charsetmig.htm#g1011430
HTH
Srini

Re: [iPlanet-JATO] Finding the database column length

This is the technique I would recommend. If you'd like to wrap this
mechanism up in the model class itself, create a subclass of QueryModelBase
that provides such a method and use that as the base class for all your
QueryModels.
Todd
----- Original Message -----
From: "Craig V. Conover" <craig.conover@S...>
Sent: Friday, October 19, 2001 12:15 PM
Subject: Re: [iPlanet-JATO] Finding the database column length
Chidu,
The result set that you get back is a JDBC ResultSet, not a "JATO" resultset. In ND, everything was wrapped in a "spider" data
structure, and therefore, difficult to get to the underlying datastructure, in many cases. In some case ND made it easier to do
certain things, and in other ways, made it more difficult or impossible(like seeing the SQL for an insert, update, delete).
>
Anyway, looking at the java.sql package, you can do this.
java.sql.ResultSet rs = <jata-model>.getResultSet();
java.sql.ResultSetMetaData rsMeta = rs.getMetaData();
// not sure if this is what you need, but it was the closest thing I couldfind
int colSize = rsMeta.getColumnDisplaySize(int column);
There are numerous other methods in the ResultSetMetaData interface thatmay be of use as well.
>
c
chidusv@y... wrote:
Hi,
How do I find out the length of a database column in a data model? In
NetDynamics, we can do dataobject.getDataField(<field
name>).getColumnLength(). Is it possible to achieve this in JATO
without using a resultset?
Thanks,
Chidu.
For more information about JATO, please visit
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>>
>>
>>
>>
>
>
>
For more information about JATO, please visit
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>
>
>
>
>
>
>

This is the technique I would recommend. If you'd like to wrap this
mechanism up in the model class itself, create a subclass of QueryModelBase
that provides such a method and use that as the base class for all your
QueryModels.
Todd
----- Original Message -----
From: "Craig V. Conover" <craig.conover@S...>
Sent: Friday, October 19, 2001 12:15 PM
Subject: Re: [iPlanet-JATO] Finding the database column length
Chidu,
The result set that you get back is a JDBC ResultSet, not a "JATO" resultset. In ND, everything was wrapped in a "spider" data
structure, and therefore, difficult to get to the underlying datastructure, in many cases. In some case ND made it easier to do
certain things, and in other ways, made it more difficult or impossible(like seeing the SQL for an insert, update, delete).
>
Anyway, looking at the java.sql package, you can do this.
java.sql.ResultSet rs = <jata-model>.getResultSet();
java.sql.ResultSetMetaData rsMeta = rs.getMetaData();
// not sure if this is what you need, but it was the closest thing I couldfind
int colSize = rsMeta.getColumnDisplaySize(int column);
There are numerous other methods in the ResultSetMetaData interface thatmay be of use as well.
>
c
chidusv@y... wrote:
Hi,
How do I find out the length of a database column in a data model? In
NetDynamics, we can do dataobject.getDataField(<field
name>).getColumnLength(). Is it possible to achieve this in JATO
without using a resultset?
Thanks,
Chidu.
For more information about JATO, please visit
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>>
>>
>>
>>
>
>
>
For more information about JATO, please visit
http://developer.iplanet.com/tech/appserver/framework/index.jsp
>
>
>
>
>
>
>

Calculation Field to be mapped to different data object's column name in Oracle BAM 12c

Hi,
I am having a challenge to enable drill down to 2nd level report by passing calculation field as parameter.
As an alternative, I am thinking to point calculation field to another data object’s column name and generate report so that I would be able to pass that as parameter to drilling report view.
Is there any way to map calculation field to different Data object’s column name? Thanks in advance.
Regards
Amik Basu

1. Yes, you can.
SQL> create table ÜÝÞ( ßàá number(10));
Table created.
SQL> insert into ÜÝÞ values (10);
1 row created.1.1 and 1.2 and 2. You can choose UTF as your default character set. It allows the user of non-English characters in VARCHAR columns in your whole database. It is not per tablespace.
SQL> create table ÜÝÞ( ßàá varchar2(100));
Table created.
SQL> insert into ÜÝÞ values ('âãäçìé');
1 row created.

Return data from all columns apart from a certain data type.

Bit stuck on something, hope somebody here can help:
I want to do a 'select * from ' a table, to return all columns except ones of a certain datatype. ie. I want to return data from all columns, excluding columns of datatype 'SDO_GEOMETRY'.
This gives me the list of columns:
SELECT COLUMN_NAME
FROM   USER_TAB_COLUMNS
WHERE TABLE_NAME = 'ORDER_ITEM'
AND   DATA_TYPE <> 'SDO_GEOMETRY'; But I can't seem to take it any further...
Now if I knew the columns beforehand, then of course I could just list them, excluding the geometry column, but this is to be used for a plug-in for MS Word, where a user can pick database columns to dynamically fill a report from - but I don't want the geometry columns as these can't be handled in this way.

Hi Reggie,
> connects to the database and presents a list of tables
My guess is that this macro is written so it selects from all_tab_cols.
Change that plugin and let it select from a view like the one above. That way, the users won't be able to see/pick anything that you are not able/willing to present for them.
Edit:
You could even tease your users, and let them see the columns, but not being able to pick them.
create or replace view available_tab_columns
as
   select decode(pickable.data_type, null, 0, 1) pickable
         ,atc.* -- narrow down yourself
     from all_tab_cols atc -- or maybe user_tab_cols
         ,(select 'CHAR' data_type from dual union all
           select 'DATE' from dual union all
        select 'NUMBER' from dual
           -- complete positive list, yourself
          ) pickable
    where atc.data_type = pickable.data_type(+);Regards
Peter
Message was edited by:
Peter Gjelstrup

How do i add data from database to JTable ! Urgent

How do i add data from database to the columns of JTable?.

hi,
Thanks for ur link. but this is just a part of my application which i am developing user interface in swing package for which i want to know how to show data to user in the table format where by table input data will be from the database. say something like todays activity is shown to the user in table format... So u have any idea of how to do this...

How to view the old data in a column if that column is dropped or rename

Using workspace manager I am not able to track the old data of a column which is dropped.
I have tried by using import and export features that Workspace manager have.. But import is not working properly in this case. And savepoint option is work with DML operation not with DDL.So, I want help in this matter
Thanks In Advance

No way even in 10g. You should build another DB and import your exported data.
then you can get data from this new DB.
SQL>create table t5 as select object_id,object_name,created from all_objects where rownum<20;
Table created.
SQL>select current_scn from v$database;
CURRENT_SCN
7724122625
SQL>desc t5
Name                                      Null?    Type
OBJECT_ID                                          NUMBER
OBJECT_NAME                                        VARCHAR2(30)
CREATED                                            DATE
SQL>alter table t5 rename column OBJECT_ID to oid;
Table altered.
SQL>desc t5
Name                                      Null?    Type
OID                                                NUMBER
OBJECT_NAME                                        VARCHAR2(30)
CREATED                                            DATE
SQL>alter table t5 drop column created;
Table altered.
SQL>desc t5
Name                                      Null?    Type
OID                                                NUMBER
OBJECT_NAME                                        VARCHAR2(30)
SQL>select * from t5 as of scn 7724122625;
select * from t5 as of scn 7724122625
ERROR at line 1:
ORA-01466: unable to read data - table definition has changed

Ensure truncated date in database column

Similar Messages

Maybe you are looking for