How to rename a column name while copying it from another table

Hi All,
I am copying rows between two table TableA to TableB
but I wanted to insert data in he column name (username) in tableA to a column named (NewUser) in tableB
How do I go about that?
insert into TableB
select Username
from TableA
Thanks

If you want to only move username, then just specify the column name for TableB, that is
insert into TableB(NewUser)
select Username
from TableA
If you want to move all (or some) of the columns while putting Username in a column named NewUser, just list the columns in both the insert into part and the select part, for example
insert into TableB(NewUser, ColA, ColB, ColC)
select Username, ColA, ColB, ColC
from TableA
Tom

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How to rename a column name in a table? Thanks first!

I tried to drop a column age from table student by writing the
following in the sql plus environment as :
SQL> alter table student drop column age ;
but I found the following error
ORA-00905: 缺少关键字 (Lack of Key word)
I have oracle enterprise edition 8.0.5 installed at windows 2000
thank you
And I want to know how to rename a column name in a table?
thanks

In Oracle 8i, your syntax would have worked. However, if I
recall correctly, in Oracle 8.0, you can't rename or drop a
column directly. One way to get around that problem is to
create another table based on a select statement from your
original table, providing the new column name as an alias if you
want to change the column name, or omitting that column from the
select statement if you just want to drop it. Then drop the
original table. Then re-create the original table based on a
select statement from the other table. Then you can drop the
other table. Here is an example:
CREATE TABLE temporary_table_name
AS
SELECT age AS new_column_name,
       other_columns
FROM   student
DROP TABLE student
CREATE TABLE student
AS
SELECT *
FROM   temporary_table_name
DROP TABLE temporary_table_name
Something that you need to consider before doing this is
dependencies. You need to make a list of all your dependecies
before you do this, so that you can re-create them afterwards.
If there are a lot of them, it might be worthwhile to do
something else, like creating a view with an alias for the
column or just providing an alias in a select. It depends on
what you need the different column name for.

How to rename the column name in oracle 8i?

hi,
Does anyone know how to rename the column name in oracle 8i?My method was drop the relationship key first then delete the old column,finally add the new column.
Thanks for your replay.
jing

There is no facilty to rename a column name in Oracle 8i. This is possible from Oracle 9.2 version onwards.
For you task one example given below.
Example:-
Already existed table is ITEMS
columns in ITEMS are ITID, ITEMNAME.
But instead of ITID I want ITEMID.
Solution:-
step 1 :- create table items_dup
as select itid itemid, itemname from items;
step 2 :- drop table items;
step 3 :- rename items_dup to items;
Result:-
ITEMS table contains columns ITEMID, ITEMNAME

How can we improve the performance while fetching data from RESB table.

Hi All,
Can any bosy suggest me the right way to improve the performance while fetching data from RESB table. Below is the select statement.
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    AND   ablad = itab-sposnr+2.
Here I am using 'KDAUF' & 'ABLAD' in condition. Can we use secondary index for improving the performance in this case.
Regards,
Himanshu

Hi ,
Declare intenal table with only those four fields.
and try the beloe code....
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INTO table itab
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How to rename a column name

dear friends,
Is there any other way to rename a column without creating another table with the requested colum name and dropping the eariler table after inserting the values from it.

SQL> desc t2
Name                                      Null?    Type
ID2                                                NUMBER
SQL> alter table t2 rename column id2 to id;
Table altered.
SQL> desc t2
Name                                      Null?    Type
ID                                                 NUMBERRgds.
...but don't forget side effects !
SQL> create or replace view v2 as select id from t2;
View created.
SQL> select status from user_objects where object_name = 'V2';
STATUS
VALID
SQL> alter table t2 rename column id to id2;
Table altered.
SQL> select status from user_objects where object_name = 'V2';
STATUS
INVALID
SQL> select * from v2;
select * from v2
ERROR at line 1:
ORA-04063: view "SCOTT.V2" has errorsMessage was edited by:
dnikiforov

Change sales area while copying contract from another contract

Hello Gurus,
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Ex.
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New Contract                       2000-10-10
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Regards,
Tarpan Vadaliya

Thanks Kapil for your input.
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I had tried to create with both routine but i am not getting succeed. I had also removed below mention code from routine and tried but not succeed.
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How to make validation in Bean and select value from another table

I want to know how to select data from table in backing bean according to primary key i have
the problem is that
i have a table Employee_Salary contains Employee ids and their salary
Empoloyee_Salary table
     Employee_ID      Number
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And Another table Called Employees
Employees table
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i have on a jsff page an <af:table> this table is editable this is the Empoloyee_Salary table
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cannot be less that 100
i want to know how to make this how to select the value from employees table according to the id i have in the employee_salary table how to make this and make this validation
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i want to know how to make this in a bean
i use jdeveloper 11g
and my project is ADF Fusion project
and the page that have the Emplpyee_Salary table is JSFF
thanks in advance

You might want to write this code in a validator on the entity object if it should apply from every screen.
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Template error while copying page from another application

I am copying a page from one application to another within the same workspace. The page I am copying has several customized template that it uses. When I copy the page to the other application all goes well until I get to the step of assigning the Templates. Instead of seeing the list of templates used and being able to change them for the new page to match with the page i am copying, i get an error in the Templates area that says:
report error:
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How do I reference columns in a report query from another report query?

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select * from dept
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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 to pull only column names from a SELECT query without running it

How to pull only column names from a SELECT statement without executing it? It seems there is getMetaData() in Java to pull the column names while sql is being prepared and before it gets executed. I need to get the columns whether we run the sql or not.

Maybe something like this is what you are looking for or at least will give you some ideas.
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                            da.ReturnProviderSpecificTypes = _returnProviderSpecificTypes;
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                            if (_includeSchema == true)
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                                da.FillSchema(ds, SchemaType.Source);
                                if (_fillTable == true)
                                    da.Fill(ds.Tables[0]);
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                                    da.Fill(ds);
                            ds.Tables[0].TableName = "Table";
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                catch (OracleException _oraEx)
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                catch (System.Exception _sysEx)
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                    if (_oraconn.State == ConnectionState.Broken || _oraconn.State == ConnectionState.Open)
                        _oraconn.Close();
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dennis

How to Rename the technical name and description of an infocube?

Hi,
How to Rename the technical name and description of an infocube?
Thanx in advance,
Ravi.

Ravi,
You cant change the Technical name of the cube but you can change the description of the Cube. If you want to have a Cube with the same properties and with different Techname and Description better you do copy from the base cube and rename as per your requirement.
Regards,
Gattu.

How can i replace column name using reciever JDBC adapter on runtime.

Hi Experts,
I have a problem with reciever JDBC synario.
Target Oracle table has columns named 2 bytes Japanese character like "日本".
Datatype cannot accept 2bytes character as element name.
So, I would like to how to replace column name on runtime.
Please tell me.
Regards,
Shinya Kawaoge

Hi Shinya Kawagoe,
I understand there is a column with two Japanese characters in target database table. Now you want to UPDATE or INSERT data in that table. You do not want to rename the column name in the database table (if you want to rename column, ask the target database admin ).
As Japanese characters are not allowed in XML Data Type in ESR. You can [Define a SQL_QUERY Statement|http://help.sap.com/saphelp_nwpi711/helpdata/en/44/7b7855fde93673e10000000a114a6b/frameset.htm]. Check the Addres日本s in below code.
<root>
<stmt>
    <Customers action="SQL_DML">
      <access> UPDATE Customers SET CompanyName=u2019$NAME$u2019, Addresu65E5u672Cs=u2019$ADDRESS$' WHERE CustomerID='$KEYFIELD$u2019
      </access>
      <key>
        <NAME>Firma</NAME>
        <ADDRESS>Strasse 3 </ADDRESS>
        <KEYFIELD>FI</KEYFIELD>
      </key>
    </Customers>
</stmt>
</root>
Regards,
Raghu_Vamsee

TO Rename a column name

Hi all,
I have a table employee with columns
'employee_id',
'employee_name'
' employee_city' ( Note the spaces before the column name )
The table is created successfully.
But i cant to able to retreive the data by specifying the column name..
eg: select employee_city from employee.
It throws an error.
Please send me a solution to reanme the column name, so that it should not contain any spaces at start & end.
Thanks & Regards,
Hariharan ST

Obviously the table was created this way:
SQL>create table testtab
"employee_id" number,
"employee_name" varchar2(100),
" employee_city" varchar2(100)
Table created.
SQL>desc testtab
Name                                      Null?    Type
employee_id                                        NUMBER
employee_name                                      VARCHAR2(100)
employee_city                                     VARCHAR2(100)Note the double quotes: Columns that are created this way can only be selected using double quotes, too:
SQL>select employee_city from testtab;
select employee_city from testtab
ERROR at line 1:
ORA-00904: "EMPLOYEE_CITY": invalid identifier
SQL>select " employee_city" from testtab;
employee_city
Chicago
SQL>This of course is a very bad idea. Dave already showed you how to rename the columns.
Regards,
Gerd

How to use the column names generated from Dynamic SQL

Hi,
I have a problem with Dynamic SQL.
I have written an SQL which will dynamically generate the Select statement with from and where clause in it.
But that select statement when executed will get me hundreds of rows and i want to insert each row separately into one more table.
For that i have used a ref cursor to open and insert the table.
In the select list the column names will also be as follows: COLUMN1, COLUMN2, COLUMN3,....COLUMNn
Please find below the sample code:
TYPE ref_csr IS REF CURSOR;
insert_csr ref_csr;
v_select VARCHAR2 (4000) := NULL;
v_table VARCHAR2 (4000) := NULL;
v_where VARCHAR2 (4000) := NULL;
v_ins_tab VARCHAR2 (4000) := NULL;
v_insert VARCHAR2 (4000) := NULL;
v_ins_query VARCHAR2 (4000) := NULL;
OPEN insert_csr FOR CASE
WHEN v_where IS NOT NULL
THEN 'SELECT '
|| v_select
|| ' FROM '
|| v_table
|| v_where
|| ';'
ELSE 'SELECT ' || v_select || ' FROM ' || v_table || ';'
END;
LOOP
v_ins_query :=
'INSERT INTO '
|| v_ins_tab
|| '('
|| v_insert
|| ') VALUES ('
|| How to fetch the column names here
|| ');';
EXECUTE IMMEDIATE v_ins_query;
END LOOP;
Please help me out with the above problem.
Edited by: kumar0828 on Feb 7, 2013 10:40 PM
Edited by: kumar0828 on Feb 7, 2013 10:42 PM

>
I Built the statement as required but i need the column list because the first column value of each row should be inserted into one more table.
So i was asking how to fetch the column list in a ref cursor so that value can be inserted in one more table.
>
Then add a RETURNING INTO clause to the query to have Oracle return the first column values into a collection.
See the PL/SQL Language doc
http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/returninginto_clause.htm#sthref2307

How to rename a column name while copying it from another table

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