DM 3.1 how to create a Bitmap Index?

Similar Questions

• Cannot create a bitmap index

  Hello
  I want to create an index of bitmap on one of the columns in a table. I did request and it failed.

  SQL> CREATE BITMAP INDEX TRANS_N_BITMAPIDX_VEH_PLATFORM ON TRANSACTION_NEW(VEH_PLATFORM) LOCAL;
  
  Error starting at line 2 in command:
  CREATE BITMAP INDEX TRANS_N_BITMAPIDX_VEH_PLATFORM ON TRANSACTION_NEW(VEH_PLATFORM) LOCAL
  Error at Command Line:2 Column:70
  Error report:
  SQL Error: ORA-01408: such column list already indexed
  01408. 00000 -  "such column list already indexed"
  *Cause:    
  *Action:

  I found there is a NORMAL index combined with VEH_PLATFORM column called "IDX$ $_30AA00021. He followed columns
  
  • VEH_PLATFORM
  • VEH_MODEL
  • MODL_YR_NBR
  • VEH_MAKE
  • TXN_PROCS_DT
  
  But I was able to create bitmap index on columns VEH_MODEL, MODL_YR_NBR, and VEH_MAKE without any error.
  
  Why does error for the VEH_PLATFORM column?
  
  Kind regards
  Sam

  So the error message was true. You had already indexed this column

  INDEX_OWNER                    INDEX_NAME                     COLUMN_NAME                    COLUMN_POSITION
  ------------------------------ ------------------------------ ------------------------------ ---------------
  VISUAL                         TXN_INDX_PLATFORM1             VEH_PLATFORM                              1
  

  You cannot have two indexes exact same list of columns

  BTW, it's a whole lot of indexes on a table.

  Concerning
  Peter

• How to create indexes on the column xmtype

  Hello
  
  I have a table as follows
  
  CREATE TABLE T_TEST_XML (ID_PROCESSUS NUMBER, TXT_XML XMLTYPE);
  
  
  I query the table above very frequently with the query
  
  SELECT * FROM TXS T_TEST_XML WHERE EXISTSNODE (TXS. TXT_XML, '/ order [status = "PEN"]') = 1
  
  
  How to create function function index on the TXT_XML column for the xpath expression/order [status = "PEN"]' to improve the query performance?
  
  Thank you

  In fact if you are limited to the use of older software

  1 consider to define an XML schema and store XML using storage relational object.

  or

  2. If you need to store XML as CLOB to create the index on extractValue(), rather than existsNode() and provide the underlying value at the SQL level rather than the XPATH level.

  SQL> DROP TABLE T_TEST_XML
    2  /
  
  Table dropped.
  
  SQL> CREATE TABLE T_TEST_XML (PROCESS_ID NUMBER, TXT_XML XMLTYPE)
    2  /
  
  Table created.
  
  SQL> create INDEX T_TEXT_XML_IDX on T_TEST_XML( extractValue(TXT_XML,'/order/status'))
    2  /
  
  Index created.
  
  SQL> set autotrace on explain
  SQL> --
  SQL> SELECT *
    2    FROM T_TEST_XML TXS
    3   WHERE ExistsNode(TXT_XML,'/order[status="PEN"]') = 1
    4  /
  
  no rows selected
  
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 3001212210
  
  ---------------------------------------------------------------------------------
  | Id  | Operation          | Name       | Rows  | Bytes | Cost (%CPU)| Time     |
  ---------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT   |            |     1 |  2017 |    31   (0)| 00:00:01 |
  |   1 |  NESTED LOOPS SEMI |            |     1 |  2017 |    31   (0)| 00:00:01 |
  |   2 |   TABLE ACCESS FULL| T_TEST_XML |     1 |  2015 |     2   (0)| 00:00:01 |
  |*  3 |   XPATH EVALUATION |            |       |       |            |          |
  ---------------------------------------------------------------------------------
  
  Predicate Information (identified by operation id):
  ---------------------------------------------------
  
     3 - filter("P"."C_01$"='PEN')
  
  Note
  -----
     - dynamic sampling used for this statement (level=2)
  
  SQL> SELECT *
    2    FROM T_TEST_XML TXS
    3   WHERE extractValue(TXT_XML,'/order/status') = 'PEN'
    4  /
  
  no rows selected
  
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 1430727070
  
  ----------------------------------------------------------------------------------------------
  | Id  | Operation                   | Name           | Rows  | Bytes | Cost (%CPU)| Time     |
  ----------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT            |                |     1 |  2015 |     1   (0)| 00:00:01 |
  |   1 |  TABLE ACCESS BY INDEX ROWID| T_TEST_XML     |     1 |  2015 |     1   (0)| 00:00:01 |
  |*  2 |   INDEX RANGE SCAN          | T_TEXT_XML_IDX |     1 |       |     1   (0)| 00:00:01 |
  ----------------------------------------------------------------------------------------------
  
  Predicate Information (identified by operation id):
  ---------------------------------------------------
  
     2 - access(EXTRACTVALUE(SYS_MAKEXML(0,"SYS_NC00003$"),'/order/status',null,0,0,5242
                93,133120)='PEN')
  
  Note
  -----
     - dynamic sampling used for this statement (level=2)
  
  SQL>
  SQL>
  SQL>
  SQL>
  SQL>
  SQL>
  

  This allows the index press questioning on any status value, rather than just the PEN

• BTREE and Bitmap indexes

  How the Btree and Bitmap index works?

  Osama_mustafa wrote:
  If you google it you will find some topics/article talking about this.

  Refer to this:
  Index bitmap:
  http://www.DBA-Oracle.com/oracle_tips_bitmapped_indexes.htm

  BTREE index
  http://www.DBA-Oracle.com/t_garmany_easysql_btree_index.htm

  Better not to refer to one of these items, they contain too many errors.
  If textbooks are not good enough, then the best source of information indexing is Richard Foote's blog.

  (Or add "Richard Foote" for your research, you do it for the b-tree or bitmap index.

  Concerning
  Jonathan Lewis

• create b-tree indexes in SSD

  Hello
  in the Data Warehouse database, can I create tree b index on the customer_id in the table customers-> very high cardinality
  
  or because it is MAS is much better as the Bitmap index (even if it's high cardinality)
  
  Thank you very much

  Yes, you can create an index b-tree normal, on any column in your table, regardless of the cardinality. If it will be used by the optimizer for a given SQL query is another problem. It will probably not be used in the usual way, you wait, but could be used to Index the Fast scan in some queries if it was cheaper than alternatives.

  Instead, you can create a bitmap index as you say, but know that bitmap indexes be locked during inserts. So they should not be used in environments OLTP concurrent transactions, or where you want to bulk load with the parallel flow data.

  Anyway if I were in your shoes I would experiment with both. What problem are you trying to solve anyway? Just creating indexes for the good of them is not that constructive. A bitmap index is not very useful in itself. Bitmap indexes are intended to be used in combination with other clues bitmap on the same table, to determine which rows of data meet several conditions in a complex query. While you have the other index bitmap on this table? Already using part index bitmap of your strategy?

  I find it always better to work forward to a problem to a solution. That's why I asked if you had a problem that you tried to resolve with this index. Working backward is literally invent a solution and there is a problem it needs hope. And often, this can be a waste of your time, that is, there is no problem that must be solved.

  John

• How to create the scroll to the menu icon click event bar

  How to create the scroll to the menu icon click event bar

  (as the "field of scrolling image")

  In my opinion, it is better for you to try something to help implementation of your solution to ask for the code.

  For example, create a few BitmapFields with icons that act as buttons.  There is source for this sort of thing on the forum if you look at, I think, looking FRO Image button, icon or Bitmap button.

  Once you have these buttons work, add these in a HorizontalFieldManager.

  Good luck.

• How to resize the Bitmap

  I have a bitmap with lets say the size 200 x 100 and I want to create a bitmap with size 200 x 200 and the first bitmap to be drawn in the news and have offset of 50px from the top and bottom of the new bitmap?

  How can I do this and be compatible with OS > = 4.6. I see in the OS 5.0, we have a method scaleInto in the class Bitmap - http://www.blackberry.com/developers/docs/5.0.0api/

  Yes, in this way, the obstacle is buffer of the Blackberry chart which is available only twice the size of the screen.

  Another option is to obtain Bitmap of RGB and that put the RGB right in the right place int this new Bitmap.

• Is it possible to create a bitmap 'dynamic '?

  I need to create a bitmap "on the fly" with a text on this subject.

  Depending on the situation and the State of the application, I need to generate an image with text and perhaps a few images on this subject. The problem is that I do not really want to show this picture on the screen, so the image must be built "off screen" and not to the user.

  This generated image will not contain images of resources or a saved image or something like that, so

  I'll be writing the text on a colored background, maybe do some picture on it and then save this image as a bitmap.

  So I guess what I need to know is how can I go do a bitmap which we tell just contains "Hello World" on a black background?

  Is this possible?

  Thank you.

  Take a look at the net.rim.device.api.ui.Graphics class. Special attention to the static method Graphics.create.

• Creating the Bitmap object EncodedImage

  Hello guys '

  Do you know how to create fromBitmap encoded Image object?

  I need to zoom in/out existing bitmap. To do this, I use EncodedImage.

  Is there a solution?

  TNX for your tips"

  Please take a look at this thread: http://supportforums.blackberry.com/rim/board/message?board.id=java_dev&message.id=763&query.id=6195...

• How to create a PDF/X1a on a Mac? (with or without iWork)

  Hi all
  I don't have an idea what is a "PDF/X1a.
  I know how to create or convert PDF files on a mac, with the Preview app and the iWork.

  But a "PDF/X1a? What is c?

  Anyone know how to create or convert a "PDFX/X1a?

  Thanks to you all.

  Here is an explanation:

  https://www.prepressure.com/PDF/basics/PDFX-1A

  Frankly, I didn't know there are different "flavors". I create .pdf for years without knowing or worry about this. I just use an excerpt:

  

  Or, if you are in a document Pages (iWork as long that is not really exist anymore - there are separate applications: Pages, Numbers, Keynote), use the export as PDF option.

  Have never heard of someone that they were not able to read the PDF, I sent as an attachment.

• How to create the Sierra startup disk?

  Hello world

  I downloaded Sierra on the App Store.

  Can I create a bootable USB Sierra drive?

  I want to install a new copy of Sierra, not upgrade.

  Thank you

  Abdelaal

  Hello

  The download size is about 4.8 gig and want 8 GB on a USB key or similar.

  I used the command line, but there are other ways.

  http://osxdaily.com/2016/06/15/make-MacOS-Sierra-beta-USB-boot-drive/

  and it may be better (which I used)...

  http://www.Macworld.com/article/3092900/Macs/how-to-create-a-bootable-MacOS-sier ra-Installer - drive.html

• How to create the recovery partition

  How to create a recovery for OSX on an existing SSD partition?

  What Mac OS X you are using?

  To boot from OS X Recovery, hold down the command (⌘) r immediately after start-up or that you restart your Mac. Release when you see the Apple logo.

  More information on the recovery of the operating system partition: On OS X Recovery - Apple Support

  If you want to create a bootable USB, here is a useful guide: create a bootable OS x - Apple support Installer

• How to create a new profile on a MacBook?

  How to create a new user or COMP

  OS X Yosemite: Configure users on your Mac Try this.

• How to create a template in pages or numbers grocery list?

  How to create a template in pages or numbers grocery list?

  Create yourself as a standard document and save it. Then save it again as a model, where you can then reuse.

• How to create a calendar, I don't have a calendar list

  I do not see how to create a calendar, can anyone help please

  File (Alt - F) - new - calendar