Definition of the erroneous view importing view with text column expression

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• View with a column that is derived from a function

  We can create a view with a column being filled using a pl/sql script, which uses 2 other columns on the same line as input?
  
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  Reg. Don't | Total | Customer account | Flag of billing. CodeFn
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  Hello

  jess_saunders wrote:
  We can create a view with a column being filled using a pl/sql script, which uses 2 other columns on the same line as input?

  Example,
  Let's say I have a vision with

  Reg. Don't | Total | Customer account | Flag of billing. CodeFn
  $1234 45 2109 Y
  $1236 15 2101 Y .

  Of course, you can use a function that you created in the same way that you would use a built-in function:

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  ,     total
  ,     customer_account
  ,     billing_flag
  ,     my_function (reg_no, total)     AS codefn
  FROM     table_x
  ;
  

  You cannot reference the procedures or anyonymous blocks in a CREATE VIEW statement (or any other SQL statement of stinks); only functions.

  Basically, I would like the script to generate a number that is returned in this column rather than do a simple Select stmt to extract columns from other tables/views.

  I don't know what you're saying here.
  As long as the function has no arguments, or make any kind of DML or DDL, then you can use it in the definition of the view, as stated above. The function failed to contain SELECT statements.
  Your notice must be based on other tables or views. If she does not really need anything from any other table, you can base your opinion on double. A CREATE VIEW statement must contain a query, and a query in Oracle must refer to a table or a view.

• GetLength errors on CLOB. Retrieves the size of a table with CLOB columns

  Hello
  
  I try to find the size of a CLOB to a table column and get the error
  
  PLS-00306: wrong number or types of arguments in the call to "GETLENGTH.
  
  When you try to use dbms_lob.getlength. Here is the code
  
  
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  Start
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  Database version: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
  
  
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  It works fine on my computer, the version is also 10g.

  SQL> declare
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   10  /
  3837
  3837
  
  PL/SQL procedure successfully completed.
  

  You should check if xmlupload is the CLOB data type.
  In addition, if you just want to get the CLOB size, you can use LENGTH() as well, you will get the same result;

  SQL>  select length(cntnt), dbms_lob.getLength(cntnt) from ims_toms_msge where rownum<2;
  
  LENGTH(CNTNT) DBMS_LOB.GETLENGTH(CNTNT)
  ------------- -------------------------
           3837                      3837
  

  Published by: PhoenixBai on September 24, 2009 13:40

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  the sql behind mv was change picks up so column of another table.

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  desc mv1
  

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  http://StackOverflow.com/questions/18085894/redefine-MATERIALIZED-view-with-no-downtime

  http://Arup.blogspot.com/2009/01/ultra-fast-MV-alteration-using-prebuilt.html

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• Create a view with a column change journal

  Hello

  I have the following table:

  create table test1)

  number of site_number

  date of change_date,

  number of area_ha);

  insert into test1 values (1, TO_DATE('1/1/2007','DD/MM/RRRR'), 20);

  insert into test1 values (1, TO_DATE('1/1/2008','DD/MM/RRRR'), 30);

  insert into test1 values (1, TO_DATE('1/1/2009','DD/MM/RRRR'), 25);

  insert into test1 values (2, TO_DATE('1/1/2007','DD/MM/RRRR'), 50);

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  insert into test1 values (3, TO_DATE('1/1/2007','DD/MM/RRRR'), 20);

  insert into test1 values (3, TO_DATE('1/1/2008','DD/MM/RRRR'), 25);

  insert into test1 values (3, TO_DATE('1/1/2009','DD/MM/RRRR'), 30);

  What I want to do is to have a view based on the table above which includes a column of change (change_log below) based on the anterior surface (area_ha) for each specific site_number. For example in the first line site_number 1 has increased the area of 20 hectares on the 01/01/2007 to 30 hectares on the next change_date for this site that 01/01/2008. How this could be done?

  SITE_NUMBER	CHANGE_DATE	AREA_HA	CHANGE_LOG
  1	01/01/2007	20	NO CHANGE
  1	01/01/2008	30	ADDED SPACE
  1	01/01/2009	25	DELETED DOMAIN
  2	01/01/2007	50	NO CHANGE
  2	01/01/2008	60	ADDED SPACE
  2	01/01/2009	60	NO CHANGE
  3	01/01/2007	20	NO CHANGE
  3	01/01/2008	25	ADDED SPACE
  3	01/01/2009	30	ADDED SPACE

  I am using oracle 11g R2

  Select site_number,

  change_date,

  area_ha,

  sign of case (area_ha - lag(area_ha,1,area_ha) over (partition by order of change_date site_number))

  When 1 "AREA ADDED.

  When-1 then "ZONE DELETED."

  Another 'NO CHANGE'

  end change_log

  of test1

  order of site_number,

  change_date

  /

  SITE_NUMBER CHANGE_DA AREA_HA CHANGE_LOG
  ----------- --------- ---------- ------------
  1 1 JANUARY 07 20 NO CHANGE
  1 1 JANUARY 08-30 ADDED SPACE
  1 1 JANUARY 09 25 DELETED AREA
  2 1 JANUARY 07 50 NO. CHANGE
  2 1 JANUARY 08 60 ADDED SECTOR
  2 1 JANUARY 09 60 NO. CHANGE
  3 1ST JANUARY 07 20 NO. CHANGE
  3 AREA 1 JANUARY 08 25 ADDED
  3 1ST JANUARY 09 30 ADDED AREA

  9 selected lines.

  SQL >

  SY.

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  I am trying to create a materialized view that derives from a column of a function and I get: ORA-01723: columns null are not allowed.
  
  I use 10 gr 2 with the following definition (simple version):
  
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  Published by: Kyle Miller on April 19, 2011 08:28

  Have you tried to create a table with the correct structure and then by creating the view materialized, based on the predefined table as described here...

  http://www.oaktable.NET/content/ultra-fast-MV-alteration-using-prebuilt-table-option

  ?

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  Hello.
  
  I have no probs creating a table as well: -.
  CREATE TABLE blah
  (
  DEVICE_ID
  )
  in select
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  Thank you.

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  user13024762 wrote:
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