Modify a column name

Hi,
I want to modify a column name of a table.
Is it possible to modify the name of the column.
If possible then please send, how to?
Regards
Shyam.

/*rename column*/
alter table <table_name> rename column <old_column> to <new_column>;
/*for datatype modify*/
alter table ap modify (name varchar2(10))

Similar Messages

How to modify a column name & How to modify a constraint name

How to modify a column name?
How to modify a primary key constraint name if the pk has been referenced by another foreign key?
Thanks.

Hi,
What version of oracle are you using? If it is 9i,
then you can the command
alter table <table_name> rename column <column_name> to <new_column>;
if it is 8i or earlier, you can create a view with the required names.
hth
Always post the oracle version and the platform you are using to get better response.

How do i change column names in oracle model?

Hi,
I am performing a migration from SQL SERVER 7.0 to Oracle 8.1.7.
I have tables that have tables in SQL SERVER with column names
that are "TYPE" and "BODY".(These are generally TEXT datatype
columns that need to be converted to LONG in Oracle.We need
these to be LONG datatype in Oracle because of an application we
are using. LOBS cannot be allowed)
The migration utility renames these columns as "TYPE_"
and "BODY_" and creates the tables in the Oracle Database.
I need to have these tables in Oracle with the same column names
viz. "TYPE" and "BODY" .
I can create new tables in Oracle with the column names "TYPE"
and "BODY" but cannot change the options in the migration
workbench for this.
Is there any option or any workaround I can use to change the
column names in the Oracle model?or set the options so that the
Oracle model tables donot modify these column names?
Thanks in advance for all the help.
Mandar

The words 'TYPE' and 'BODY' are reserved Oracle words. Its best
to go along with what the workbench has suggested. If you have
to keep the original names of the columns trying wrapping double
quotes around them after the data migration is complete. This
may cause a case sensitivity or referential problem later on
though.

Column Name too long

While loading the data from XML source I am getting following error
ORA-00972: identifier is too long
I understand that some of the Column name are more then 30 char (Oracle Limit) inmy source but I like to know what needs
to be modified in the IKM to pick only first thirty characters of column name in case of column name is more then 30 Char.
The LKM works fine as it take only the first 30 char to create the table name, I think it take that setting from topology manger.
but what need to modify in IKM to take only first 30 char for column name.
I am creating target table on the fly and I dont wanna modify each column name in the target table, It'll be alot of work for me.
Please let me know your thoughts on this.
Thanks

Yes its erroring out for IKM step for creating target table.
The step is ignoring the error on Create Target Table because of following error
972 : 42000 : java.sql.SQLException: ORA-00972: identifier is too long
java.sql.SQLException: ORA-00972: identifier is too long
ofcourse the column name is longer then Oracle limitation that is 30 Chars.
In the next step for inserting data it is also failing because of same error.
LKM steps work fine as it strip the column name longer then 30 char.

How to modify a table column name

Hi all,
How to modify a table column name...
Thanks

could type the command here... but will not do that..because you are supposed to read the docs.
You can find the command here..
http://www.faqs.org/docs/ppbook/r22871.htm
Regards,
G.

Modifying Internal Table row - The column name is dynamic

Hi,
I need to update the internal table as described below,
Assume that i have 10 columns in my internal table and i need to modifying the column value in row, which is dynamic.
for example, i'm writing it in Subroutine and it has 3 formal parameter
1) Key field value
2) Column name
3) Value of the column
in my subroutine i need to write code to modify the row, which should handle the columns dynamically.
Samples,
7th record i need to modify the 4th column value.
4th record i need to modify the 9th column value.
Please guide me to handle this requirement.write me if i'm not clear.
...Nandha

For the column check the ASSIGN statement:
No system here, but I think it is:
ASSIGN COMPONENT <index> OF STRUCTURE <structure> TO <field-symbol>.
For the row:
READ TABLE <itab> INDEX <index> INTO <work area>.
--> For your 1. example you could write:
READ TABLE <itab> INDEX 7 INTO <work area>.
ASSIGN COMPONENT 4 OF STRUCTURE <work area> TO <field-symbol>.
<field symbol> now points to the 4th column of the 7th row.
Guenther

Dynamically add and modify listbox columns number and names

I need to dynamically modify number and names of columns in a listbox.
What should I do for this? And is it even possible?

Frank-
Thanks for the suggestion -- I hadn't tried that but just did and it still doesn't seem to work. Would the binding cache AttrDefs separately from results?

Modified by column the user name is not updated

Hi
I am using the client side object model to upload the document in the document library, its working fine, but the modified by column the each user name is not updated, instead of system name is updated for all the
upload.
In the below screen shot where all the documents uploaded by the different users but its show the only the system instead of user name how to solve the issue.

thanks Hemendra
Agrawal
i will
try it another one issue
i cant able to upload the file size >1 MB its showing error."the remote server returned an error (400) bad request."
i tried your previous post but its not working.

Modifying Column names before Migrating to Oracle 9i

Hello Everyone,
I am trying to Migrate a SQL Server 7 database to an ORACLE 9i using the Migration Workbench tool.
I have noticed the Migration Workbench changes some of our column names that are ORACLE RESERVED WORDS. Migration Workbench adds an underscore to the end of such column names. I need to keep the column names the same.
I select a schema object On ORACLE MODEL PANE but Migration Workbench does not allow me to change the column name nor any of the its properties.
I know that i could add a new column (e.g. DATE)and insert the data from the existing column (e.g. DATE_) and then drop the column but out developers don't like this approach!
Thank you in advance for all your help!
Mitra

I am having the exact same problem. I dont think oracle migration work bench supports this i.e. changing the field names before we actuall complete the migration. So what I did was generate the DDL and clear up all the unnessasary '_' values from the DDL and then create the proper schema. I know this isn't the right way od doing things but I dont know of any other way. Keep in mind that I just started work on oracle like 2 weeks ago.

How to select even the column names of a table?

Hello All,
Is there a way to select even the column names of a table in the select statement?
My select from a table (say X) is in a SQL* Plus script that gets invoked by application tier and displays data in the application tier window. User's can then copy the data into a spreadsheet and do their processing. However, I need to give them the column names too along with the data.
Thanks,
Chiru

If there is a middle tier that is selecting and
displaying the data, and that's what the users are
copying from, the middle tier would have to address
its presentation of the data to allow users to
include column names. If this is a common task, the
application should probably be modified to give users
the option of downloading the data in a spreadsheet
directly rather than forcing them to copy and paste
data.Thanks for the reply.
The users don't have to copy paste. The application tier has an options in the "Tools" menu item which allows them to copy the entire output to a file (in my case a txt file which is a pipe delimited). Then they have to do text to columns to get the data into each column of the spreadsheet. I could have directly called the stored procedures from the application tier and created ".csv" files and FTP'd them to the user's folders. However, I am having to go this round about because, I am not getting enough support from the LAN team in FTP'ing etc.
OK I'll think of another workaround.
Thanks,
Chiru

How to get the column name and table name from xml file

I have one XML file, I generated xsd file from that xml file but the problem is i dont know table name and column name. So my question is how can I retrieve the data from that xml file?

Here's an example using binary XML storage (instead of Object-Relational storage as described in the article).
begin
dbms_xmlschema.registerSchema(
    schemaURL       => 'my_schema.xsd'
, schemaDoc       => xmltype(bfilename('TEST_DIR','my_schema.xsd'), nls_charset_id('AL32UTF8'))
, local           => true
, genTypes        => false
, genTables       => true
, enableHierarchy => dbms_xmlschema.ENABLE_HIERARCHY_CONTENTS
, options         => dbms_xmlschema.REGISTER_BINARYXML
end;
genTables => true : means that a default schema-based XMLType table will be created during registration.
enableHierarchy => dbms_xmlschema.ENABLE_HIERARCHY_CONTENTS : indicates that a repository resource conforming to the schema will be automatically stored in the default table.
If the schema is not annotated, the name of the default table is system-generated but derived from the root element name :
SQL> select table_name
2 from user_xml_tables
3 where xmlschema = 'my_schema.xsd'
4 and element_name = 'employee';
TABLE_NAME
employee1121_TAB
(warning : the name is case-sensitive)
To annotate the schema and control the naming, modify the content to :
<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb">
<xs:element name="employee" xdb:defaultTable="EMPLOYEE_XML">
    <xs:complexType>
Next step : create a resource, or just directly insert an XML document into the table.
Example of creating a resource :
declare
res boolean;
doc xmltype := xmltype(
'<employee>
<details>
    <emp_id>1</emp_id>
    <emp_name>SMITH</emp_name>
    <emp_age>40</emp_age>
    <emp_dept>10</emp_dept>
</details>
</employee>'
begin
res := dbms_xdb.CreateResource(
           abspath   => '/public/test.xml'
         , data      => doc
         , schemaurl => 'my_schema.xsd'
         , elem      => 'employee'
end;
The resource has to be schema-based so that the default storage mechanism is triggered.
It could also be achieved if the document possesses an xsi:noNamespaceSchemaLocation attribute :
SQL> declare
2
3    res boolean;
4    doc xmltype := xmltype(
5 '<employee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
6             xsi:noNamespaceSchemaLocation="my_schema.xsd">
7    <details>
8      <emp_id>1</emp_id>
9      <emp_name>SMITH</emp_name>
10      <emp_age>40</emp_age>
11      <emp_dept>10</emp_dept>
12    </details>
13   </employee>'
14   );
15
16 begin
17    res := dbms_xdb.CreateResource(
18             abspath   => '/public/test.xml'
19           , data      => doc
20           );
21 end;
22 /
PL/SQL procedure successfully completed
SQL> set long 5000
SQL> select * from "employee1121_TAB";
SYS_NC_ROWINFO$
<employee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceS
<details>
    <emp_id>1</emp_id>
    <emp_name>SMITH</emp_name>
    <emp_age>40</emp_age>
    <emp_dept>10</emp_dept>
</details>
</employee>
Then use XMLTABLE to shred the XML into relational format :
SQL> select x.*
2 from "employee1121_TAB" t
3     , xmltable('/employee/details'
4         passing t.object_value
5         columns emp_id   integer      path 'emp_id'
6               , emp_name varchar2(30) path 'emp_name'
7       ) x
8 ;
                                 EMP_ID EMP_NAME
                                      1 SMITH

How to fix "Modifying a column with the 'Identity' pattern is not supported"

When doing Code First Migrations my mobile service always errors in the seed method with: 'Modifying a column with the 'Identity' pattern is not supported. Column: 'CreatedAt'. Table: 'CodeFirstDatabaseSchema.Methodology' for the CreatedAt column. All my
models inherit from EntityData.
// Sample model
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using Microsoft.WindowsAzure.Mobile.Service;
namespace sbp_ctService.Models
public class Methodology : EntityData
public Methodology()
this.Scenarioes = new List<Scenario>();
public string Id { get; set; }
[Required]
[StringLength(50)]
public string EntryMethod { get; set; }
[Required]
[StringLength(50)]
public string TestDirection { get; set; }
[Required]
[StringLength(50)]
public string PassCriteria { get; set; }
[Required]
[StringLength(50)]
public string Dependency { get; set; }
public bool ExtraInfo { get; set; }
public virtual ICollection<Scenario> Scenarioes { get; set; }
And in my Configuration.cs file during an update here's my seed method:
protected override void Seed(sbp_ctService.Models.sbp_ctContext context)
// This method will be called after migrating to the latest version.
context.Methodologies.AddOrUpdate(
m => m.Id,
new Methodology { Id = "Methodology1", EntryMethod = "P/F", PassCriteria = "P/F", Dependency = "None", ExtraInfo = false, TestDirection = "Round" },
new Methodology { Id = "Methodology2", EntryMethod = "P/F", PassCriteria = "Best", Dependency = "None", ExtraInfo = false, TestDirection = "Round" },
new Methodology { Id = "Methodology3", EntryMethod = "P/F", PassCriteria = "Best", Dependency = "None", ExtraInfo = false, TestDirection = "In/Out" },
new Methodology { Id = "Methodology4", EntryMethod = "P/F", PassCriteria = "Best", Dependency = "None", ExtraInfo = false, TestDirection = "Out" }
For some reason on an update the CreatedAt field is created and given a value of null. So of course on an insert/update it will error because CreatedAt is an Identity field.
I've tried to configure the modelBuilder in my context to tell it that CreatedAt is an identity field, but that still doesn't work.
modelBuilder.Entity<Methodology>()
.Property(m => m.CreatedAt)
.HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
So far the only way to fix this is by commenting out my Seed data, but it's not a fix. I've seen other solutions where you can force it to not serialize certain fields, but I don't know if those solutions apply.

So I think this occurs because you might have created the database (Code-first) with POCOs that didn't have the CreatedAt field in them. I think that's what I did and the easiest way to fix it for me was to delete my database and re-create it with my POCOs
inheriting from Entity Data from the very beginning. We were still in development so it worked out for us but I know some people might not be able to do that. Here's what my table looks like after it was created correctly:
USE [database_name]
GO
/****** Object: Table [sbp_ct].[Methodologies] Script Date: 2/24/2015 9:48:45 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [schema_name].[Methodologies] (
[Id] NVARCHAR (128) NOT NULL,
[EntryMethod] NVARCHAR (50) NOT NULL,
[TestDirection] NVARCHAR (50) NOT NULL,
[PassCriteria] NVARCHAR (50) NOT NULL,
[Dependency] NVARCHAR (50) NOT NULL,
[ExtraInfo] BIT NOT NULL,
[Version] ROWVERSION NOT NULL,
[CreatedAt] DATETIMEOFFSET (7) NULL,
[UpdatedAt] DATETIMEOFFSET (7) NULL,
[Deleted] BIT NOT NULL,
[Name] NVARCHAR (MAX) NULL
GO
CREATE CLUSTERED INDEX [IX_CreatedAt]
ON [schema_name].[Methodologies]([CreatedAt] ASC);
GO
ALTER TABLE [schema_name].[Methodologies]
ADD CONSTRAINT [PK_schema_name.Methodologies] PRIMARY KEY NONCLUSTERED ([Id] ASC);
Does yours look something like that?

How to validate column name in dynamic made sql?

Oracle db, jdbc, web app with struts2/spring.
Example table could be this:
CREATE TABLE album
album_id number(10) not null,
artist varchar2(50) not null,
title varchar2(50) not null,
released DATE,
CONSTRAINT album_pk PRIMARY KEY (album_id)
);In may app the user MAY search, MAY sort, and the result from an select might return 10.000 rows.
The basic sql usually look like this.
String sql = "select album_id, artist, title, released from album";Then in the html page the user can add search criteria for each column. Like type "iron maiden" in artist field, put "1982" in released field. And you all know what the exceptionally result should be from that :)
Now I need to modify the sql a bit:
if( artist search field contains stuff )
sql = sql + " where nvl( artist,' ') like ?"
}we try use prepared statements right? So we use ? as placeholders, and then add "iron maiden" into this statement later on.
Nice, no big fuzz right, and pretty safe from sql injections i guess.
But now I have to have an if/else for every single field in the table. Boring. In my app I got like 25 tables like this, with 20 columns minimum. Copy/Paste have never been so boring.
I also might have to add "order by" with user selected columns and their order. I have to count the query to get total result in case i got to split it up in pages. So there is alot of if/else and sql = sql + "more stuff", and sticking to ? and pure prepared statements is impossible.
But doing this is not good either:
for( each element in a map)
sql = sql + " and nvl( " + key + ",' ') like ?"
}Where key is "artist".
In struts and other tag libs its easy to make kode like:
<s:textfield name="model.addSearch( 'artist' )" value="%{model.getSearch( 'artist' )}" size="30" />
Silly example maybe, but just to make a point.
Inputed values in an html form, can very easily be a part of a dynamic created sql - which becomes a security problem later on.
Artist is an column name. Key should be validated if it contained an valid column name.
I could make a list of strings, containing valid column names to check against.
My question is if there is possible to get this type of information from the database, so I don't have to hand-make these lists?
But I also want to keep the number of heavy and slowing queries down.
My app have like 25 tables now, and I could easily get away with hand-make everything, copy/paste around etc. But I have more projects and this question will be here next time too. And after there again...

Etharo wrote:
Metadata. Then I have to query the database, take the result and use it for validating of input. If my sql only query 1 table, then this is ok. In this case I could do with that. But if the sql query mutliple tables, with sub-selects, unions etc. Then I might have to query all tables first, and even then I might not have what I want.
The best way is of course to run the query, then get the metadata from that query - cause then im 100% sure what columns will be returned, and then I can validate with that.... 1 query is often not that slow. But I might query once to find total number of rows the query return in order to decide if we need to page the result. then query to get the metadata for validating input, then query to get the result... Maybe this is ok -but my head don't like it as an general ok thing to do, but I can't really say why...If you have a gui screen then it needs to correspond to some specific query. It can't be all possible combinations.
So once you know the query you can obtain the meta data using a query that returns no results. Like the following.
select * from mytable wheren 1 = 0
>
Jschell:
I agree to what you say. I don't understood everything you said tho.
Im not sure if you talk about having 1 search field (like google), and you input stuff there that might be in any columns.
I have several search fields in one-to-one relasionship with view column/sql query column.
Then you already know what the field represents. So validate it in the gui and not via the database.
The first is way more advanced since you have to cover any input, any column, any case etc. Pluss add ranking. Lots of work for someone who have done little searchengines.
Latter is simpler, but might also be limiting.Huh?
As an example if you have a call center then the operators are not going to be doing unrestricted searches to find customers. They are going to look using a very limited set of data like the customer name and telephone number.
>
My job is very much like an consulent. They got an app, I shall add a new feature. The app is old and ugly coded. My boss ask how long it takes to make this, I say 2months, he decide 1 month. My dev time for features is rarely above 1 month, and I don't make much new apps.
So I don't have the time to make advanced codegenerator, or spend time to evaluate various frameworks. Bringing an framework into the existing code is actually difficult. But I do want to improve the code, and add good code into the existing app that can be extended without evil pain.
That doesn't jive with your OP. You made the following statement "My app have like 25 tables now, and I could easily get away with hand-make everything,...".
That suggests that you are doing much more than simply updating an existing application.
If you only need to add one new field then you should do only that. You shouldn't be attempting to add a system spanning validation system.
On the other hand if you are in fact adding a validation system, then code generation makes it likely that it would take less time or no more than the same. And it is less likely to introduce bugs.
Learn how to make an code generator? Well I guess thats what I asked help for - point me in the right direction if you could pls. Putting strings together to become code in an logic way is usually manageable, at least for simple querys. Evaluating that the generated code is good/safe - got no good clues...
Learn about frameworks? Got no time. Hope I will get the time, but I won't. The customer must want to spend the money so I can get the time, that won't happen cause an framework does not add features, its only cost saving in terms of dev time, and maintenance time. The customer have no such focus/interest. They got a bit money to spend now and then regularily. i.e. government.
I just want to try code as good as possible so I save myself from errors, painfull rewrites, and dev-time that gets out of proportions because of stupid code. So the question is actually about me trying to improve myself, its just that i don't know how right now.There are two goals.
1. Implement a specific feature in an existing application.
2. Learn a new way to solve problems.
Nothing says that the second will help with the first. They should be addressed separately and your post doesn't make it clear what the first is so it is hard to say how it should be down.
As for the second I already made a suggestion which provides two new ways to solve problems.

Csv output has database column names instead of aliases as in template

Hi,
I'm trying to publish a csv report to an ftp server in a specific format and layout. The column names need to be customized. I've modified the alias name both in the data model and in the rtf layout template. But the csv still contains the data base names as in column0, column 1, etc. Does anyone know how to fix this? The html or rtf format displays the correct column names but not the csv.
output sent:
Column 0 Jane
Column 1 Doe
Column2 Female
desired output:
Name Jane
Last Name Doe
MF Female
Edited by: user556100 on Apr 30, 2013 2:25 AM
Edited by: user556100 on Apr 30, 2013 2:25 AM

As far as i know CSV output will not consider any template formatting. it will basically give output of all the columns used in select statement of SQL in comma separated format.
It is the default behavior of CSV output in bi publisher
Guru's Correct me if i am wrong

"Modifying a column with the 'Identity' pattern is not supported. Column: 'CreatedAt'.

I am using code fist migration and second time I run the service, I got this error.
"Modifying
a column with the 'Identity'pattern
is not supported. Column:
'CreatedAt'.
context.Cars.AddOrUpdate(c => c.Id,
new Car { Id = "60B0891B-C3CF-41A6-9BE0-BCCCE5949E6B", Image = "ic_highlander", Name = "Highlander", Description = "4 SEATER, FULL DAY (10 HRS), DOWNTOWN EXCLUDING INDUSTRIAL ZONE, WITH ENGLISH SPEAKING DRIVER", SeatingCapacity = 4, Luggage = 2, Rates = 20000.00M, AirportCode = "YGN" },
new Car { Id = "BAA205B5-C43F-490E-A83B-81F0EBDA2D97", Image = "ic_super_custom", Name = "Super Custom", Description = "4 SEATER, FULL DAY (10 HRS), DOWNTOWN EXCLUDING INDUSTRIAL ZONE, WITH ENGLISH SPEAKING DRIVER", SeatingCapacity = 4, Luggage = 2, Rates = 20000.00M, AirportCode = "YGN" },
new Car { Id = "DD68E56D-3967-4D32-A959-BEFBCB70FC4B", Image = "ic_mark_ii_grande", Name = "MarkII GRANDE", Description = "4 SEATER, FULL DAY (10 HRS), DOWNTOWN EXCLUDING INDUSTRIAL ZONE, WITH ENGLISH SPEAKING DRIVER", SeatingCapacity = 4, Luggage = 2, Rates = 20000.00M, AirportCode = "YGN" },
new Car { Id = "8EDDC308-FB63-469B-8A6A-B2360D61892D", Image = "ic_hiace_commuter_13", Name = "Hiace commuter", Description = "4 SEATER, FULL DAY (10 HRS), DOWNTOWN EXCLUDING INDUSTRIAL ZONE, WITH ENGLISH SPEAKING DRIVER", SeatingCapacity = 4, Luggage = 2, Rates = 20000.00M, AirportCode = "MDL" }

Hi,
Thanks for posting here.
We are looking into this and will update you with solution. Stay tuned for details
Girish Prajwl

Modify a column name

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