SQL-modify the columns in a table

I need to change a column in a table exiciting in production,

What are the steps I need to follow before using below command

ALTER TABLE table_name modify column_name data_Type;

Hello

If you want to increase the size that existing then you can try what you did...

You cannot change datatype below what - this current...

SQL> alter table test modify emptype varchar2(30);

Table altered.

Tags: Database

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Update the value of the column based on another value of the column to another table
Hi all

I have something very confused me and need your help.

Having two tables A and B.

Table A have 2 column (+ id + and desc1)

Table B have column 2 also (+ transnum + and desc2)

Now, I want to update the column desc2 of table B identical desc1 of table was where transnum of Table B same as the id of the table has.

I use this SQL

update of a2 set a2.desc2 = a1.desc1 of a2 on a2.transnum = a1.id inner join a1

but this error occurs

Error from line 5 in order:
update of a2 set a2.desc2 = a1.desc1 of a2 on a2.transnum = a1.id inner join a1
Error in the command line: 5 column: 35
Error report:
SQL error: ORA-00933: SQL not correctly completed command
* 00933. 00000 - "command not properly ended SQL."
* Question: *.

* Action. *

Hope someone can help me. TQ for help...
```
SQL> create table a1 (id number(2),des varchar2(10));

Table created.

SQL> create table b1 (transnum number(2),des varchar2(10));

Table created.

SQL> insert into a1 values (1,'maran');

1 row created.

SQL> insert into b1 values (1,'ram');

1 row created.

SQL> commit;

Commit complete.

SQL> update b1 set des=(select des from a1 where b1.transnum=a1.id);

1 row updated.

SQL> select * from b1;

  TRANSNUM DES
---------- ----------
         1 maran
```

Deactivation of the column in a table based on the setting in the search box

Hi all
I use Oracle Apex 4.1. I have two region
1. search box
2. in the form of a table
In the search box, I have a LOV field where the user can select the value. Based on this LOV in the search box, tabular column f06 must disable or read-only.
For example if I select THREE in LOV then only column f06 is expected on the other it must disable. How to get there.
Thanks in advance
Ravi

Hi Bobo,

Hope link below will solve your query.

Disable the column in a table.

BR,

Patrick

Find the name of the column in all tables

How to find the name of the column in all tables in the database for any column to reveal the name of the person?

We have over 1000 tables looking for.and in some places, the name column FNAME LNAME, First_NAME, DNAME
For example we have Customer table, Table EMPLOYEE and the ORDER Table
--------------------------------
Customer table
--------------------------------
LNMAE
EMPLOYEE table
EMP_ID
DEPT_NAME (we don't want this column as it is not a name column)
Last_name (he must propose this column because it is named)
----------------------------
CONTROL Panel
-----------------------------
ORDER_ID
ORDER_NAME (we don't want this column as it is not a name column)
Last_name (he must propose this column because it is named)
-------------------------
Dept table
-------------------------
Dept_ID
DEPT_NAME (we don't want this column as it is not a name column)
Please advise...
Thank you.

Hello

What exactly do you do?

If you want to display the tables containing these columns, you can query the view data dictionary USER_TAB_COLS (or ALL_TAB_COLS, or, if you have privileges, DBA_TAB_COLS).

For example:

SELECT table_name, column_name

Of user_tab_cols

WHERE nom_de_colonne IN ('DNAME', 'FNAME', 'FIRST_NAME', 'LAST_NAME', 'LNAME') - or else

ORDER BY table_name, column_name

;

How can I know the Position of the column in a table
Hi all
How can I know the position of the column in a table...
For example: -.
I have a table

DESC EMPLOYEES

EmpID
Ename
SAL

I want to know the Empid is in 1st position, ename is 2nd and sal is in 3rd place.

is this possible?
SELECT *.
Of user_tab_cols
WHERE table_name = 'EMP ';

Concerning
Arun

Can be parallelized Alter the dimensions of the column to change tables
Hi all

Can be parallelized Alter tables to the dimensions of the column to change.

I was able to set the explain plan of parallelized command CREATE INDEX and CREATE TABLE STATEMENTS and view the plan of the explain command.
But when I try to apply the market in PARALLEL for an ALTER TABLE to change column size, explain the plan is a failure.

Ex:
EXPLAIN THE PLAN TO ALTER / * + PARALLEL (10) * / EMP_BLKP_1 TABLE MODIFY ENAME VARCHAR2 (40);
ORA-00900: invalid SQL statement

But when I run the alter even outside the plan to explain that it works very well. But I don't know if parallelism is applied for that change the order.

Receive your answer.

Thank you
NKM
http://docs.Oracle.com/CD/E11882_01/server.112/e26088/sql_elements006.htm#SQLRF50801

>
The PARALLEL indicator tells the optimizer to use the specified number of concurrent servers for parallel operation. The indication applies to SELECT it, INSERT, MERGE, update, and DELETE portions of a declaration, as well as for the table scan part. If no parallel restriction is violated, the flag is ignored.

InStr/substr logic to update the column in a table db 9i / 10g / 11g
Hi all

I have a table Test_table with email_address column.
Please update the table and remove
[email protected] and
[email protected]
email_address column.

Current values of the Email_address column

[email protected], ken. [email protected], [email protected], [email protected]
2.Ken. [email protected], [email protected], [email protected]; [email protected]
3 ken. [email protected], [email protected], [email protected], [email protected]

The new value must be
1 ken. [email protected], [email protected]
Ken 2. [email protected], [email protected], [email protected]
3 ken. [email protected], [email protected]

If email_address to remove is the first email address in the column
Then, remove the first comma too, otherwise delete the comma above and email address.

I created a C1 cursor, but I know is not the logic to use to get the new value
Any help will be greately appreciated.

Declare
Cursor c1 is select rowid, email_address
From Test_table
Where (at the top (email_address) like ('% [email protected]%'))
GOLD (superior (email_address) like '% [email protected]%');
V_new_email varchar2 (200);
BEGIN
FOR rec IN C1 LOOP
-do not know how to handle V_new_email to be able to update the table with the current values.
V_new_email: = - some function instr/substr here

Update Test_table
Define email_address = V_new_email
Where rowid = rec.rowid;

END OF LOOP
END;

Thank you
You needn't PL/SQL for such a thing. A SQL should be sufficient.
```
with data as
(
  select '[email protected], [email protected], [email protected], [email protected]' col from dual union all
  select '[email protected], [email protected],[email protected]; [email protected]' from dual union all
  select '[email protected], [email protected], [email protected], [email protected]' from dual
)
select col, trim(replace(replace(replace(col, '[email protected],'), '[email protected]'), ', ,', ',')) rep_col
  from data;

COL                                                            REP_COL
-------------------------------------------------------------- --------------------------------------------------------------
[email protected], [email protected], [email protected], [email protected]   [email protected], [email protected]
[email protected], [email protected],[email protected]; [email protected] [email protected], [email protected],[email protected];
[email protected], [email protected], [email protected], [email protected]   [email protected], [email protected], [email protected]
```

Ask about the order of the column in a table

We have a table called EMP in several of our patterns. JOB is the third column in order. But in certain patterns, JOB is not the third column. I'm looking for patterns with EMP table where the column of EMPLOYMENT is not the third column.

SQL > desc emp
 Name                                      Null?    Type
 ----------------------------------------- -------- --------------
 EMPNO                                     NOT NULL NUMBER(4)
 ENAME                                              VARCHAR2(10)
 JOB                                                VARCHAR2(9)
 MGR                                                NUMBER(4)
 HIREDATE                                           DATE
 SAL                                                NUMBER(7,2)
 COMM                                               NUMBER(7,2)
 DEPTNO                                             NUMBER(2)


select column_name, column_id from dba_tab_Cols where 
TABLE_NAME = 'EMP' AND OWNER = 'SCOTT' order by column_id;

COLUMN_NAME                     COLUMN_ID
------------------------------ ----------
EMPNO                                   1
ENAME                                   2
JOB                                     3       --------Third column
MGR                                     4
HIREDATE                                5
SAL                                     6
COMM                                    7
DEPTNO                                  8

select
  owner
from
  dba_tab_Cols
where
  TABLE_NAME = 'EMP' AND
  OWNER = 'SCOTT' and
  column_id != 3;

Interrogate the columns of all tables
Hello
I called A, B, C... upto z. of these 26 paintings of paintings, 15 tables have the column common name "AAA". Now, I want to find the names of the tables in which there is a column name "AAA". for example, if this column name 'AAA' is present in the tables B, F, G,... Y(15 tables). The query should display all the table names. Here, in this example we donot know what table is the name of the column "AAA". We find the tables where is the name of the column "AAA"?

Thanks in advance...

Let me know if you have any confusion with my question.
```
SQL> select * from user_tab_columns where column_name = 'AAA';
```

Disable the previous dating date picker in the column in a table

can someone please help.

on the date column in a table, need to disable previous dates.

Current functionality. But when the validation page gets updated and the user is able to select earlier dates.

To restrict the datePicker for new lines changed the URL of the button 'Add Row '.

javascript:myAddRow();

In the page edit, I added this to "Javascript > function and Variable global statement.

function myAddRow()
{ apex.widget.tabular.addRow(); 
$("td[headers='DETAIL_DATE'] input:last") 
.datepicker("option","changeMonth",false) 
.datepicker("option","minDate",$v("P2_MASTER_MONTH_MINDATE")) 

.datepicker("option","maxDate",$v("P2_MASTER_MONTH_MAXDATE")); };

https://Apex.Oracle.com
w/u/p: nani5048/test/test
App 92603 5 page
Thank you
Nani
			 I created a dynamic action
the loading of the page
$("td [en-têtes = 'STATUS_DATE'] entrée")
. DatePicker ("option", "minDate", $v ("P5_MASTER_MONTH_MINDATE"));
as well as the global javascript function
function myAddRow() {}
apex.widget.tabular.addRow ();
$("td [en-têtes = 'STATUS_DATE'] entrée")
. DatePicker ("option", "minDate", $v ("P5_MASTER_MONTH_MINDATE"));
}

collection of panels reorder and hide the columns of af: table

Dear Experts,
I use JDev 11.1.1.7.0.
I would like to customize the model from the collection of a table so that I can set the Visible property of each column and displayIndex.
How can I replace the model of collection related to the af data: table in order to browse the columns and set these properties?
Best regards, Atanas.

Hello

On the bean of the jsf/jspx page of your table, where you set your table method, you must code as follows:
```
public void setYourTable(RichTable t1) {
    this.YourTable = t1;

    List list = t1.getChildren();
        for (UIComponent component : list ){
            if (componente instanceof RichColumn){

        ((RichColumn)componente).setDisplayIndex(theOrderNumberYouWantoToSetToTheColumn);    //set a number order to the column of the table
        ((RichColumn)componente).setVisible(true/false);                    //true or false to show or not

        }
    }

}
```
For each column, you must set the number columns are ordered by, and whether they are visible or not.

Kind regards

Carlos

How to hide the column in a table in the adf.

I created the table of the ADF and surround it in the collection of panels, the data in the table from the bean to support variable. Depending on the State, there are a few columns that must hide with the user. I used visible = "false", where the false value will come from backing bean. However the user to the table always have the ability to display the column. Is there any one to hide the column with the user at all times. Fixing the code example:
< af:column sortable = "false" headerText = "column1" id = "c13" visible = "false" >
"" < af:outputText value = "{row.columns1} ' id ="ot13"/ >
< / af:column >

Hello

Use the rendered property?

Concerning

Select the column in a table that is defined in the select previous in the statement

Hello
I want to write a procedure that selects all the data in a table has then records them in the text file. I tested on table hr.countries.
My code is like this:
echo off newpage 0 space 0 pagesize 0 feed head off trimspool check out serveroutput on the value
coil countries.txt
define dtable = COUNTRY;
declare
col_num NUMBER;
no_lig NUMBER;
line VARCHAR2 (100);
Col VARCHAR2 (100);
Start
Select count (COLUMN_ID) in the col_num USER_TAB_COLUMNS WHERE table_name = '& dtable';
Select count (*) in no_lig of & dtable;
because me in 1.row_num
loop
1.col_num j
loop
Select column_name from col FROM USER_TAB_COLUMNS WHERE table_name = '& dtable' and column_id = j;
Select the pass in the row (select col, rownum: nurse of (select col from & dtable)) where rn = i;
IF (j! = col_num) THEN
DBMS_OUTPUT. PUT(Row ||) ', ');
ON THE OTHER
DBMS_OUTPUT. PUT (Row);
END IF;
end loop;
DBMS_OUTPUT. NEW_LINE;
end loop;
end;
/
spool off
I have had no error, but the result is like this:
COUNTRY_ID, COUNTRY_NAME, REGION_ID
COUNTRY_ID, COUNTRY_NAME, REGION_ID
COUNTRY_ID, COUNTRY_NAME, REGION_ID
.. and so on for the whole table.
I want to have results with data not only the names of columns. No idea what is the problem? I thought that select col online would do the thing, but the line is identical to the col variable...
Thank you
Honza

Set serveroutput on;

define dtable = COUNTRY;

declare

col_num NUMBER;

no_lig NUMBER;

line VARCHAR2 (100);

Col VARCHAR2 (100);

Start

Select count (COLUMN_ID) in the col_num USER_TAB_COLUMNS WHERE table_name = '& dtable;

Select count (*) in the no_lig argument of &dtable;

because me in 1.row_num

loop

1.col_num j

loop

Select column_name from col FROM USER_TAB_COLUMNS WHERE table_name = '& dtable' and column_id = j;

run immediately 'select'. Col | "from (select ' |) Col |', rownum: nurse from (select ' |) Col |' of & dtable)) where rn =' | I have

Online;

IF (j! = col_num) THEN

DBMS_OUTPUT. PUT(Row ||) ', ');

ON THE OTHER

DBMS_OUTPUT. PUT (Row);

END IF;

end loop;

DBMS_OUTPUT. NEW_LINE;

end loop;

end;

/

Output

anonymous block filled

AR, Argentina, 2

To, Australia, 3

BEING, Belgium, 1

BR, Brazil, 2

CA, Canada, 2

CH, Switzerland, 1

CN, China, 3

OF (Germany), 1

DK, Denmark, 1

For example, Egypt, 4

FR, France, 1

HE, Israel, 4

IN, India, 3

IT, Italy, 1

JP, Japan, 3

KW, Kuwait, 4

ML, Malaysia, 3

MX, Mexico, 2

NG, Nigeria, 4

NL, Netherlands, 1

SG, Singapore, 3

UK, United Kingdom, 1

WE, United States of America, 2

ZM Zambia, 4

ZW, Zimbabwe, 4

Disable the column in a table.
Hello

How can I disable column in a table.
in collaboration with 4.1 and I Assistant founded in table form.

If I entered the value in a column second column must disable and vice versa?

How can I do this?

Thanks and greetings
CORINE
CORINE wrote:
Hello
Could you help me to write the code. My column in a table are 13,14,15,16

If I type in field 13 then 14 and 16th column should turn off and
If I go should disable the value in field 14 and 13 and 15 column.

How can I do this?

Thank you & best regards
CORINE

I have not tested this code; but the following may be your approach:
In the field 'Attributes of the element' of column 13, you can call a javascript function:
```
onblur = "javascript:updateCols(this);"
```
In your browser, right click on each of your columns (one at a time) and select "inspect element" to check the attributes of the HTML element. Assuming that column in the form of your table 13 is rendered in the HTML like f13, 14th column as f14, 15 columns as f15 and 16th as f16, write this JS function in the HTML page header:
The JS function above is triggered when the user moves out of column 13. The function then checks the length of the value entered by the user in column 13. If the length is greater than 0, it disables the columns 14th and 15th. Otherwise, it allows them.

The code above is for your first scenario:

If I get home should disable the value in the field column 13 then 14 and 16

You can do the same for the other scenario.

Hope this is clear. Or otherwise, give me access to your workspace and I try the here above.

Change data type for the column in a table - Oracle 8i
Team,

I need to change a VARCHAR2 column in number.

ALTER table xyz change number abc;

By giving the above statement, it says I need empty this column before you change.

I can't change the data type before emptying this column.

Please indicate any other solution. Give me some suggestions.

Empty the column for me here BIG task.
user11081688 wrote:
I can't change the data type before emptying this column.

Not according to the documentation:

You can change the data type of any column or decrease the size of the entire column if all rows in the column contains NULL values.

Please indicate any other solution. Give me some suggestions.

You can add another column with the correct data type.
```
ALTER TABLE xyz ADD COLUMN def NUMBER;
UPDATE TABLE xyz SET def = TO_NUMBER(abc);
ALTER TABLE xyz DROP COLUMN abc;
ALTER TABLE xyz ADD COLUMN abc NUMBER;
UPDATE TABLE xyz SET abc = def;
ALTER TABEL xyz DROP COLUMN xyz;
```
If I remember correctly, Oracle 8i does not support the change of name of column if this solution is a bit more complicated than 9i and above. Another option would be to create a new table with CREATE TABLE AS... SELECT, drop the old one and rename a new one to the old.

SQL-modify the columns in a table

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