How to assign a default value to a column?

Similar Questions

• How to use the default value of a column in a table in insert or upda

  Hello
  
  I try to use the values by default so that the user should not have to enter data, but when I select default type and a default, I see an error message if I try to add a new line.
  
  How can I use a default value to a column in a tabular presentation?
  
  Gouri
  
  Published by: user1046395 on April 3, 2009 09:58

  Gouri,

  You can change simply to attribute each report column. For example,.

  To set the default date.
  Default type: PL/SQL Expression of function
  Default: sysdate

  To set the default text,
  Default type: PL/SQL Expression of function
  Default: * "CLERK."

  If you still get an error, what is the error message?
  Tarraf

• How to set the default value of a column from the value of the 2 columns given

  Is it possible to set the default value for a column A, as the concatenated values of columns B and C of the create table statement itself without using the trigger.
  
  for example, in a line, if column B is 'James' and column C is "smith" then the column has must be "james Smith".
  in another line if column B is 'Bob' and column C is "Taylor" then column should be "Bob Taylor"
  
  Thank you
  YG

  Yes, it is possible. But what is your version of the database? Try to use "virtual column. Search for a virtual column in the following link.
  http://www.Oracle.com/technology/pub/articles/Oracle-database-11g-top-features/11g-schemamanagement.html
  http://download.Oracle.com/docs/CD/B28359_01/server.111/b28286/statements_7002.htm

• How to set the default value of a column?

  Hello
  While creating a table a lack that certain field value is set to a default value, like:
  
  create table t2
  (a number;
  b number not null);
  
  In this table, I want to put a value to a certain default value, as in the case where a value is not entered then a field will be automatically filled with the default value. How to do this?

  Very simple:

  create table t2
  (a number default 10,
  b number not null);
  

  You can also set a default value and keep it as NOT NULL, to prevent it from being updated with NULL value later.

  create table t2
  (a number default 10 not null,
  b number not null);
  

  You can probably get faster answers glancing http://tahiti.oracle.com/ to more simple questions, in which case you would be looking for.

  Kind regards
  Francisco.

• How to find if the DEFAULT VALUE of the COLUMN is stored as metadata?

  Hello
  I am using Oracle 11 g enhanced functionality add a COLUMN. Adding new columns with the DEFAULT values and unconstrained NULL is no longer requires that the default value in all existing records.
  Sometimes, we change DB columns not NULL with default with the DEFAULT value null. This operation "materialize" the default for the column.
  Y at - it an easy way (see Dictionary) how to find the default value of the COLUMN is stored as metadata or 'materializes '?
  Thank you. Filip
  
  Version of Oracle RDBMS: Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production

  Look at the table SYS COL$. He has a column called PROPERTY.

  It will have the magic number 1073741824 for columns that have been added by using this new feature...

• How to set the default value for the digital control on front panel?

  How to set a default value for a numeric control of LabVIEW 2009 Front Panel? I have several input values that are actually configuration settings I want to settle with the default values of zero. I want them to be the values displayed when the façade first appears until the code is executed.

  I really want to use the Minimum and Maximum limits by default for this because I still want to be able to define acceptable limits for values.

  I would not be able to specify a default value of zero for these entries?

  Enter the desired value, then "right click...... of default data of value to operations. Save the VI.

• How can I set default values to set the Mode in the config of the AO?

  Hi, how can I set default values to allocate mode in the config of the AO. To be precise, in the attached vi, I need to set the Mode allocate in the AO Config to ' use FIFO memory (6) ' if the value inside the structure of my case is false and 'no change (0)' if the value inside the strusture case is true.

  Create two constants for Mode allocate input (right click > create > constant). A place in the real case of the structure of the case and place it in the case of false. Their son in the same tunnel (border of the structure of the case), then the tunnel of wire to the pole to allocate the AO Config Mode. I do not have traditional DAQ installed, but who should do it.

• How to set a default value in the Import Wizard delimited for the date?

  Hello community,

  I am currently trying to import some files delimited in a SQL table via the Import Wizard (right-click on a Table "import data... ") with delimited as input (.dsv) files.

  In step 4 of the wizard, I put the columns in the Source files for the target of the columns of the Table.

  Now, this is where my problem. Whenever a target column has the format "date", I define the mask of translation you want for each column.

  I would like to define a mask by default so that the same format is always used.

  User interface, it looks like this field also exists:

  

  However I can't put it in the wizard itself, and I'm not able to find the option in the preferences.

  I tried the following preferences (Oracle SQL Developer 4.0.2):

  Preferences-> database->-> all NLS date 3 preferences set to "HH24:MI:SS DD. MM YYYY ".

  Preferences-> Migration-> translators-> Format of Date Source default value "HH24:MI:SS DD. MM YYYY ".

  Preference-> Migration-> data move Options->

  

  But still, I have to type it every time.

  Can someone explain how to set the default value?

  You can not.

  But.

  In the next major release, we seek to:

  • selection of a menu selector common date formats drop-down
  • Save your import settings session and their reloading for later import

  I think you have a good idea, maybe it defaults to MRU. When we start the process of the Beta/early adopter, be sure to check and let us know what you think. For the moment, and what I'm doing, I copy the date format string and paste them in such as required. I'm not a super big fan of having default values in 'automatically' added because it can lead to mistakes, and in this case, data corruption issues.

• How to assign the next value in the sequence directly in a variable?

  How to assign the next value in the sequence directly in a variable without using a table TWICE in PL/SQL.

  BluShadow wrote:

  How about a quick test on 11g, just to see if you directly select a sequence in a variable is significantly better than the mark of DOUBLE.

  ...

  Nope... no obvious difference.

  This is because there is none: Oracle's SELECT sequence. NEXTVAL FROM DUAL under the covers. The direct assignment is just a convenient encoding for us, but it does not change the work that accomplishes Oracle.

  create sequence s;
  alter system flush shared_pool;
  declare
  l_num number;
  begin
  l_num := s.nextval;
  end;
  /
  select sql_text from v$sql where parsing_schema_name = user;
  

  SQL_TEXT
  Report the number of l_num; begin l_num: = s.nextval; end;
  Select sql_text from v$ sql where parsing_schema_name = user
  Select double S.NEXTVAL

• How to set the default value of the attribute with a sequence number? Is it possible to add a string to seq.no. like abc0001?

  Mr President.

  How to set the default value of the attribute with a sequence number? Is it possible to add a string to seq.no. like abc0001?

  Concerning

  For the date, you can use groovy expression adf.currentDate to set the current date. reference http://adfgouravtkiet.blogspot.in/2012/11/how-to-set-default-values-for-entity.html

  You already have ways to use the sequence.

  How do you add a new value in the form. You're creating a new line of your page (user interface) and by engaging with validation operation? Unless you commit you will not be able to see anything in the table.

  Thank you

• Web site created by Muse. The greats until tweek of today. Web site insists now for open index.html in the tablet. Don't know how product, nor how to change the default value for pc of office/index.html. Would advise. Bob

  Web site created by Muse. The greats until tweek of today. Web site insists now for open index.html in the tablet. Don't know how product, nor how to change the default value for pc of office/index.html. Would advise. Bob

  Hi Bob

  I think that you have found the solution but if still you are facing the question, please give me the url of the site that opens another provision in the tablet.

  Please make sure desktop redirection is checked in the site properties page layout.

  Thank you

  Sanjit

• How to change the default value of a parameter and LOV attached to a parameter

  Hi all
  
  I'm new to the discoverer reports and I need the following tasks:
  1. the need to change the SQL of a discoverer report
  2. need to change the default value of the parameter (from constant for the current month). In the discoverer more responsibility when I open the report and go to tools > > setting > > edit
  I can see the value of the default constant is given. On the right side there is a drop down that says "Value". I suppose that if I put a SQL as default, I need to change the drop-down list for sql or something and then put the code SQL. Problem is the menu drop-down is froezen and I can't change it.
  Even if I try to create a new report parameter.
  3 need to change the LOV associated with the element on which is based the setting.
  
  
  I have the discoverer more responsibility to myself and did not have the discoverer administrator (as forms 6i developer desktop tool) tool. My questions are:
  1. can I modify the SQL query using discoverer and responsibility or do I discoverer Administrator tool?
  2. any help on how to get the default value of an SQL query? Currently, it is a constant value.
  3. is there a way to understand is that the LOV is made of the constant values fixed (as a set of values independednt) or they are read in a SQL (value valid table sets)?
  
  Solutions pointers will be greatly appreciated!
  Thanks in advance.
  
  Thank you and best regards,
  Shashank

  It is not possible to use a default calculation for a paraeter

• How to use the prompt value in the column of the report

  Hello
  
  I have a quick report column which is 'Adj Type' that contains values 10,20,30, and when the user selects Adj Type = 10, this value should be passed on to the column of the report.
  
  For example. Value in column 1 is 10 and this should multiple with the prompt value and production is expected to be 10 * 10.
  
  Ideas how to capture the prompt values in the column of the report for the calculation.

  Hi hsekar,

  (1) declare a presentation online in the section variable set Variable--> Variable--> P_var presentation

  (2) in Fx Table_name. Your_column * @{P_Var}

  @{P_var} {20} (20 is the default, it replaces when a user selects the value in the command prompt

  Thank you
  Saichand.v

• Change the default value of some columns in an oracle 11g table

  I have a table called cust_file, its table consists of a large number of columns (one of these columns called cus_tax) and have a lot of data.

  I use oracle 11g, I want to change the default value of the column cus_tax is equal 1.

  I wrote

  ALTER TABLE cust_file MODIFY (1 by DEFAULT cus_tax).

  
  

  Table changed
  

  
  

  but after I inserted new data to test the operation, I found that the new record has a value = null for the column cus_tax

  
  

  then I tested it using the following query

  
  

  Select data_default in the all_tab_columns where table_name = 'CUST_FILE' and column_name = 'CUS_TAX ';

  no selected line

  
  

  so please help me to change the default value of the cus_tax column.

  
  

  
  

  Thanks for any help.
  

  
  

  
  

  > but after I inserted new data to test the operation, I found that the new record has a value = null for the column cus_tax

  If the INSERT included a NULL value for the column, the GET of a NULL inserted by default substitution.

  SQL > create table hkc_test_10 (id_column number, data_col_1 varchar2 (5), data_col_2 varchar (5));

  Table created.

  SQL > insert into hkc_test_10 values (1, 'First', 'F');

  1 line of creation.

  SQL > select * from hkc_test_10 by 1.

  ID_COLUMN DATA_ DATA_
  ---------- ----- -----
  1 first F

  1 selected line.

  SQL > alter table hkc_test_10 change (data_col_2 default 'TRUE');

  Modified table.

  SQL > insert into hkc_test_10 values (2, 'Second', NULL);

  1 line of creation.

  SQL > select * from hkc_test_10 by 1.

  ID_COLUMN DATA_ DATA_
  ---------- ----- -----
  1 first F
  2 second

  2 selected lines.

  SQL > insert into hkc_test_10 (id_column, data_col_1) values (3, 'Third');

  1 line of creation.

  SQL > select * from hkc_test_10 by 1.

  ID_COLUMN DATA_ DATA_
  ---------- ----- -----
  1 first F
  2 second
  3 third TRUE

  3 selected lines.

  SQL >

  Hemant K Collette

• function to set a default value for a column that is defined by the user

  Hi all
  
  Can use us the user-defined function to set a default value for a column?
  
  for example:
  

  create or replace  function test1  return number is
  begin 
  return 10;
  end;
  
  
  create table testt
   (id  as test1,
    name varchar2(20));
  
  error:
  ORA-02000: missing ( keyword

  Thank you
  Ashwani

  Ashwani says:

  Can use us the user-defined function to set a default value for a column?

  N °

  A trigger (this function call) can be used to implement such a feature.