Bitmap index frequently updated useful column or not?

Similar Questions

• Local Bitmap Index confusion

  Hello
  I use Oracle 10.2.0.3.0 on Solaris 5.10.
  
  I have a range based to 60 partitions partition table. It is a fact table. I load the data for 60 days in this table. I created a partition for each day, and the partition key is the column date. I've created the table with the partition, but does not create the local bitmap index on the partition keys $vdate, because as far as I know oracle makes the local bitmap index unusable before insert you and then to rebuild it after the charge. Is this fair?
  
  So the best strategy is first load the data in the partition, and then create a local on this partition, is bitmap index - this exact?
  
  For example, in the future, some lines get inserted into an existing partition where the local bitmap index is present, then I should still once rebuild the index on that partition, as in the case of insertion Oracle would have it turned off?
  
  
  In this table, it has a vactivity column that is a foreign key to a dimension. Several queries use this column here where clause. I also want to create an index of bitmap on this column? On this not partitioned key column, the local bitmap index should be created. Is this fair?
  
  Please also suggest as which is faster, a local bitmap index rebuild after making it unusable, or the deletion and recreation it?
  
  Thank you and best regards

  If you insert only a few lines, you don't need to score the unusable bitmap index partition. The insert will not fail.

  However, if you perform a bulk insert several lines, it would be desirable mark it unusable and rebuild after insertion.

  You can certainly create an index on the column of the FK.

  Hemant K Collette

• Foglight for Oracle - Bitmap Index

  All,

  Is thre a way for me to detect if an index Dickman is used in a database

  Also, I would be able to tell if a lock is the result of a bitmap index.

  Thank you!

  The index bitmap behave with slightly different locks.  Because of the line are stored in the bitmap, no probable outcome of row in the effective closure of the WHO index of locking.  In the design of applications, you should pay attention when the bitmap indexes are used on tables with updates.

  To find the bitmap indexes, you can use something like

  SELECT INDEX_TYPE, TABLE_OWNER, TABLE_NAME, INDEX_NAME

  OF dba_indexes

  WHERE index_type IN ("BITMAP", "BITMAP AXES on the FUNCTION")

  /

  Conclusion if a lock is being influenced by a bitmap index wouldn't be a combination to find a blocking lock and check if the locked object is a table with a bitmap index.

  The f

• When the CBO would not use bitmap indexes available?

  I have a large data warehouse table in a star schema classic, with an index number of bitmap for the dimension tables. When you run queries that contain parameters for multiple indexes, the CBO will only use generally one or rarely two bitmap index.

  It seems to me that if the indexes are valid, statistics, the values of the parameters are present, etc and the CBO uses a bitmap index in an AND condition, he would like to use all those she could.

  there all the parameters that affect or bitmap how indexes him CBO will use? I'm looking for some advice on what to look for or research.

  Database is 11.2.0.3 base with no patch.

  Thanks in advance,

  Sean

  rp0428 - who has been deliberate because my question is not "how to solve this problem", that's exactly what I pointed out in my post. Just trying to see if there are all the controls to weight the decision-making community organizations in this area.

  OK - then let me simply state it.

  No - there are NO these parameters. But most of the posters are not really looking for a simple yes/no answer even if of many word of questions like that.

  See my response as of March 18, 2012 19:21 in this thread: https://community.oracle.com/message/10219613?

  Here I provide a simple table with SIX bitmap index, a query that uses predicates that combine values since the execution plan and the six columns indicating the different INDEX of BITMAP UNIQUE BITMAP, BITMAP or operations and BITMAP CONVERSION to ROWID.

  I won't repeat everything here, but this example should show you that Oracle will limit itself the way you suggest.

• I currently have an ad - one that I use frequently on IE8 which does not work on IE9. How can I stop to get a message that I have new updates when IE9 is the only update?

  I currently have an ad - one that I use frequently on IE8 which does not work on IE9.  How can I stop to get a message that I have new updates when IE9 is the only update?

  Hi altak38,
   
  -What is the add-on which you speak?
  -Are you referring to Windows Update with Internet Explorer 9 update several times even if it has been installed?
   
  If so, follow the steps in the following article to resolve this problem.
   
  Troubleshooting Windows Update or Microsoft Update when you are repeatedly offered an update
   
  Post back with more information for the issuance of the add-on - to help you help.

• Why a method to create a constraint would allow the index to be used, but not another.

  Hi all

  With the help of:

  Oracle Database 11 g Enterprise Edition Release 11.2.0.4.0 - 64 bit Production

  SQL Developer Version 4.0.2.15

  I had to do the following query on a table.

  Select distinct chdrnum, tranno

  of ractpf_pgr;

  I ran the setup of SQL in SQL Developer, who told me that he was doing a full table scan,

  (It's what you get using SEPARATE!)

  After some research, I discovered that if I put in question on columns not null check constraints

  and then recreated the index based on these columns, I'd get a full index scan instead of a table scan.

  Good news - off, I went and tried using the following method (I think it's call a constraint of out-of-line)

  and created one for each colmn using snytax below.

  ALTER table RACTPF_PGR add constraint CS_CHDRNUM_NN check (CHDRNUM is not null) validate;

  Ran my SQL Tuning Advisor again - no joy - a full table scan that was happening.

  Did some more research and recreated the constraints with the help of an online method

  ALTER TABLE RACTPF_PGR CHANGE (CHDRNUM CONSTRAINT CS_CHDRNUM_NN NOT NULL);

  My SQL Tuning Advisor is represented - and yes the index was used.

  
  

  But what I want to know why a method would cause the index to use another does not

  
  

  Thanks in advance.

  
  

  The second is a NOT NULL constraint.

  The a ('is not null') is technically not a NOT NULL constraint.

  Give me a moment to start my database, and I will demonstrate.

  Edit: Here's the demo:

  SQL> create table x (a number null, b number null);                  
  
  Table created.                                                       
  
  SQL> alter table x add constraint a_nn check(a is not null) validate;
  
  Table altered.                                                       
  
  SQL> alter table x modify (b constraint b_nn not null);              
  
  Table altered.                                                       
  
  SQL> select column_name, nullable
    2  from user_tab_cols
    3  where table_name = 'X';                                         
  
  COLUMN_NAME
  ----------------------------------------------------------------------
  
  N
  -
  B
  N                                                                    
  
  A
  Y                                                                    
  

  The index does not store registrations for the lines where all components of the index are null, then the optimizer needs to see that the columns are not nullable to be able to use an index scan.

• CBO: full instead of bitmap index use, why table scan?

  I have a query in which it is clearly benefitial to use the bitmap index, rather oracle goes for the full table scan. Could you please shed some light on this? Because even a hint does not help, I guess that something prevents oracle (11.1.0.7.0) to use it in a sort of range index scan pass.
  
  installation program:

  create table test_distance (
  x_display number,
  y_display number,
  x_rough number(5,2) as (trunc(x_display,2)),
  y_rough number(5,2) as (trunc(y_display,2)));
  
  insert into test_distance (x_display,y_display) 
  (select dbms_random.value(-180,180), dbms_random.value(-90,90) from dual connect by level < 200000);
  
  create bitmap index test_bm_xrough on test_distance(x_rough);
  create bitmap index test_bm_yrough on test_distance(y_rough);
  
  create or replace function  western_bbox_longitude(x binary_double, y binary_double, radius binary_double) return number
  is
  begin
    --simplified
   return x - 0.0001*radius;
  end;
  /
  
  exec dbms_stats.gather_table_stats(user,'TEST_DISTANCE',cascade=>true,estimate_percent=>100);

  several select statements:

  --remember x and y values and use them in the subsequent queries.
  select * from test_distance where rownum = 1;
  
  alter session set statistics_level = all;
  
  --no bind variable, no function call -> proper plan
  select * from test_distance where x_rough = 16.14 and y_rough = -35.53;
  select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
  
  --with bind variable, no function call -> still proper plan
  select * from test_distance where x_rough = :xin and y_rough = :yin;
  select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
  
  --using between, bind variable, no function call -> proper plan
  select * from test_distance where x_rough between :xin-0.01 and :xin and y_rough between :yin-0.01 and :yin;
  select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
  
  
  --full table scan, why?
  select td.*,
  trunc(western_bbox_longitude(:xin,:yin,:radius),2)
  from test_distance td 
  where x_rough = trunc(
  western_bbox_longitude(:xin,:yin,:radius),2);
  select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
  
  --forcing oracle to use the index results in bitmap index full instead of range scan, why?
  select /*+ index( td test_bm_xrough) */ td.*,
  trunc(western_bbox_longitude(:xin,:yin,:radius),2)
  from test_distance td 
  where x_rough = trunc(
  western_bbox_longitude(:xin,:yin,:radius),2);
  select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
  
  --guessing it might be related to the selectivity of the function doesn't change the plan either
  associate statistics with functions western_bbox_longitude default selectivity 0.001;

  Ah sorry, I somehow read the wrong line in your initial statement where it between the function has been used.

  Yes it is possible that the selectivity of the function plays a role here. More likely may be the order of execution for the undeterministic functions is then different for literals. However, you can try to work around this problem by using a few different approaches.

  encapsulate the function inside a double subseelct

  select /*+ index( td test_bm_xrough) */ td.*,
     (select trunc(western_bbox_longitude(:xin,:yin,:radius),2))
  from test_distance td
  where x_rough = (select trunc(western_bbox_longitude(:xin,:yin,:radius),2) from dual);
  

  This should allow to cache the result of the function to a certain extent. Otherwise, the result of the function may be recalculated for each row in the test_distance table.

  The same can be achieved with a WITH clause
  not tested

  with wboxlong as (select trunc(western_bbox_longitude(:xin,:yin,:radius),2) xrough from dual)
  select /*+ index( td test_bm_xrough) */ td.*,
     x.xrough
  from test_distance td
  join wboxlong x on td.x_rough = x.xrough
  

  Also note that your tip worked. Oracle uses the bitmap indexes to access the data. Index indicator indicates to the CBO to use this index if possible, but is not on the path. If you want a different plan, you can try to apply also the path combined with a suspicion as NO_INDEX_FFS (http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/sql_elements006.htm#SQLRF50413).

  Published by: Sven w. on January 3, 2011 18:57

• Do not update the column if the source column is null

  Hi all
  I'm trying to update some columns on the target, I won't update the column if the source is NULL for the column (do not replace the old value if the new value is zero). How can I do this using OWB. I use 11,1 g.
  
  Any help will be greatly appreciated.
  
  Thank you
  Ravi

  There are a few ways to do this:

  First of all, you can add your target to the canvas a second time as a source, an outer join to the source of queries on the same fields that you use in your target match constraint, and then run the new value and the existing value in an expression to generate the control you need and send the existing value if the new value is null.

  Alternatively, you can use a splitter on the lines with a single stream going where your field is null in this case update you the target without updating this field and the other the field update stream. This means that the generated code will now be an update of re-encoding re - query the same sources for the second pass, and that any recovery strategy you are not dependent on each mapping succeeding or failing as a total unit will have to be reconsidered.

  Or, of course, you can just put a trigger on the table to check the: new.value and overwrite it with the: if old.value: new.value is null.

  Mike

• I've updated to Sierra, na not use iCloud, now I see all of my dates in the calendar are gone!

  I've updated to Sierra, na not use iCloud, now I see all of my dates in the calendar are gone!

  If it was in iCloud, turn, if they were not, tell us where they have been

• Windows Mail is not refreshing since 09/02/2012. When I try to update using the F5 key, I get the error messages.

  Windows Mail is not refreshing since 09/02/2012.  When I try to update using the F5 key, I get the error messages.  The only way I can see me new emails is to sign on the web page of my Internet service provider, which I don't like.

  original title: windows mail is NOT refreshing

  It would be useful that Microsoft has put a notice to have several products access our email accounts so that us non-technical people could avoid these problems.

  Maybe it's something that Apple should warn the consumer. I have three e-mail accounts and I receive and send all the accounts on three different computers at the same time and have never had this problem. Your case is the first.

• "Update info" link does not work in Windows 8 by using the Microsoft account

  I have Windows 8 Pro. I had signed with my Microsoft account.

  Recently, I ran into problems of synchronization and so had to sign out and sign in my account from Microsoft on my PC in Windows 8.
  I have 2 steps check activate my Microsoft account and authenticate using the authenticator application for Windows Phone 8.
  I signed on the Microsoft account on my PC after switching to a local account and on the Microsoft account. I used normal password (not the app since it does not accept it). Successfully signed in, she says that the parameters can not be synchronized until I've "update info" in my Microsoft account. I know it asks me the passcode generated by the application, but the link is dead. Here is the screenshot of the link.
  
  How can I make it work?
  Reset my PC isn't an option. I can't afford to lose everything I have in there. In addition, a system at this stage image backup is useless for obvious reasons.

  Hi Ram,

  As the link update security information is dead, you can connect to the Microsoft account directly and update security information.
  Here is the link: https://account.live.com/summarypage.aspx

  Why should I verify my email address?
  http://Windows.Microsoft.com/en-us/Windows-Live/account-verify-ID-email-address
  Security information for the Microsoft account: FAQ
  http://Windows.Microsoft.com/en-in/Windows-Live/account-security-password-information

  Let us know if that helps.  If the problem persists, please answer, we will be happy to help you.

• Since the last update Photoshop CC will not use my GPU while Lightroom CC works. East of GPU Radeon HD 5700

  Since a recent update Photoshop CC will not use my GPU saying I do not have a minimum of 512 MB of vRam and wont let me enable it, even if I have 1 GB of vRam...

  When I load CC in Lightroom, it detects, is already selected for use.

  I use Windows 10 with 8 GB of ram and a Radeon HD 5700

  any ideas on how to fix.

  Go to the web site AND and download the most recent Wibdows 10 device driver for your graphics card.  It looks like you have installed is not correct.  No date shows no VRAM.

  glgpu [0]. GLVersion = "3.0".

  glgpu [0]. IsIntegratedGLGPU = 0

  glgpu [0]. GLMemoryMB = 0<>

  glgpu [0]. GLName ="? »<>

  glgpu [0]. GLVendor = "ATI Technologies Inc."

  glgpu [0]. GLVendorID = 0

  glgpu [0]. GLDriverVersion ="? »<>

  glgpu [0]. GLRectTextureSize = 16384

  glgpu [0]. GLRenderer = "AMD Radeon HD 5700 Series.

  glgpu [0]. GLRendererID = 0

  glgpu [0]. HasGLNPOTSupport = 1

  glgpu [0]. GLDriver ="? »<>

  glgpu [0]. GLDriverDate ="? »<>

• I've been to see the BLUE SCREEN lately and I don't know how to fix it. I already checked the NVIDIA graphics card updates, but it's not!

  I've been to see the BLUE SCREEN lately and I don't know how to fix it. I already checked the NVIDIA graphics card updates, but it's not! I also uninstalled and Reinstalled but I don't think that worked.

  Signature of the problem
  Problem event name: BlueScreen
  The system version: 6.0.6002.2.2.0.768.3
  Locale ID: 1033

  Files helping to describe the problem (some files may be is no longer available)
  Mini092911 - 02.dmp
  SysData. XML
  Version.txt

  See a temporary copy of these files
  WARNING: If a virus or other security threat caused the problem, open a copy of file can harm your computer.

  Additional information about the problem
  BCCode: 116
  BCP1: 9CEE7510
  BCP2: CA 8, 16700
  BCP3: 00000000
  BCP4: 00000002
  OS version: 6_0_6002
  Service Pack: 2_0
  Product: 768_1
  Information about the server: ce621e4c-18c8-469e-8f97-42590f35c1d9

  AND:

  Description
  A problem with your video hardware caused Windows to stop working correctly.

  Signature of the problem
  Problem event name: LiveKernelEvent
  The system version: 6.0.6002.2.2.0.768.3
  Locale ID: 1033

  Files helping to describe the problem (some files may be is no longer available)
  WD-20110929-1029 - 01.dmp
  SysData. XML
  Version.txt

  See a temporary copy of these files
  WARNING: If a virus or other security threat caused the problem, open a copy of file can harm your computer.

  Additional information about the problem
  BCCode: 117
  BCP1: 9CEE7510
  BCP2: CA 8, 16700
  BCP3: 00000000
  BCP4: 00000000
  OS version: 6_0_6002
  Service Pack: 2_0
  Product: 768_1
  Information about the server: a59df662-85fc-45dd-a4b0-537bf6e212b3

  Hello

  Check with support of the manufacturer of the system (motherboard for customized systems manufacturer) if the video device
  is integrated on the motherboard. Also check with Nvidia Support, their drivers and documentation online
  and ask in their forums known issues.

  NVIDIA - drivers - use OPTION 1 to manually enter your info driver to get the most recent drivers.
  http://www.nvidia.com/download/index.aspx?lang=en-us

  NVIDIA Support - check with the support that she might be a known issue
  http://www.nvidia.com/page/support.html

  NVIDIA forums - also check for the forums it might be a known issue or others likely to have
  http://forums.nvidia.com/

  -------------------------------------------------------------

  Check this thread for more information on using BlueScreenView, MyEventViewer and other methods of
  Troubleshoot BlueScreens - answers top 3 (+ 1 more).

  http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-system/sometimes-i-get-a-blue-screen-when-using-IE-8/c675b7b8-795f-474d-a1c4-6b77b3fcd990

  We can analyze the minidumps if make you it available to the SkyDrive or another file
  sharing sites.

  ZIP or download the content of the C:\Windows\minidump

  Use SkyDrive to upload collected files.
  http://social.technet.Microsoft.com/forums/en-us/w7itproui/thread/4fc10639-02dB-4665-993a-08d865088d65

  ------------------------------------------------------------

  References to Vista also apply to Windows 7.

  Have you updated your screen/video or other large recent drivers - check in Control Panel.
  Updates of Windows to see if a driver has been loaded it. Use this generic utility below
  and when you get to the section driver use the methods in the next message and then back to
  the troubleshooter as needed. In rare cases, antivirus/antispyware/security programs can
  cause this error.

  Also check with the support of system Maker and video/display of the map because he could be called
  questions - also check in their forums.

  BCCode: 116 0 x 00000116

  Bug VIDEO_TDR_ ERROR control has a value of 0 x 00000116. This indicates that an attempt
  to reset the display driver and recover a time-out has failed.

  BCCode: 116 0 x 00000116<-- read="" this="" link="" read="" this="">
  * 1275.html http://www.faultwire.com/solutions-fatal_error/attempt-to-Reset-the-Display-Driver-and-recover-from-0x00000116-

  ----------------

  BCCode: 117 0 x 00000117

  Bug VIDEO_TDR_TIMEOUT_DETECTED control has a value of 0 x 00000117. This indicates that the display driver failed in a timely fashion.

  BCCode: 117 0 x 00000117<-- read="" this="">
  * 1276.html http://www.faultwire.com/solutions-fatal_error/the-Display-Driver-failed-to-Respond-in-timely-Fashion-0x00000117-

  1. update the video driver - also look for the BIOS and chipset of low level drivers at the manufacturer of system
  of (card mother manufacturer custom systems). Check with Nvidia Support and forums.

  2 are looking for Virus/Malware.

  3 check the hard disk for errors - run Checkdisk (see below)

  --------------------------------------------------------------------------------

  The inclusion of 116 error in the troubleshooting code is the only coincidence and holds no.
  special meaning (other than pilot caused bluescreens occur with some frequency).

  Look in the Event Viewer to see if something is reported on those.
  http://www.computerperformance.co.UK/Vista/vista_event_viewer.htm

  MyEventViewer - free - a simple alternative in the standard event viewer
  Windows. TIP - Options - Advanced filter allows you to see a time rather
  of the entire file.
  http://www.NirSoft.NET/utils/my_event_viewer.html

  -------------------------------------------------------------------------

  Here are a few ways to possibly fix the blue screen issue. If you could give the blue screen
  info that would help. Such as ITC and 4 others entered at the bottom left. And all others
  error information such as codes of STOP and info like IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.

  As examples:

  BCCode: 116
  BCP1: 87BC9510
  BCP2: 8C013D80
  BCP3: 00000000
  BCP4: 00000002

  or in this format:

  Stop: 0 x 00000000 (oxoooooooo oxoooooooo oxoooooooo oxooooooooo)
  Tcpip.sys - address blocking 0 x 0 00000000 000000000 DateStamp 0 x 000000000

  It is an excellent tool for displaying the blue screen error information

  BlueScreenView scans all your minidump files created during 'blue screen of death '.
  hangs and displays information about all accidents of a table - free
  http://www.NirSoft.NET/utils/blue_screen_view.html

  BlueScreens many are caused by old or damaged, in particular the video drivers drivers however
  There are other causes.

  You can do without if needed fail or the Vista DVD or recovery command prompt mode
  Options if your system was installed by the manufacturer.

  This tells you how to access the System Recovery Options and/or a Vista DVD
  http://windowshelp.Microsoft.com/Windows/en-us/help/326b756b-1601-435e-99D0-1585439470351033.mspx

  You can try a system restore to a point before the problem started when one exists.

  How to make a Vista system restore
  http://www.Vistax64.com/tutorials/76905-System-Restore-how.html

  -------------------------------------------------------------------------

  Start - type this into the search-> find COMMAND to top box and RIGHT CLICK-
  RUN AS ADMIN

  Enter this at the command prompt - sfc/scannow

  How to analyze the log file entries that the Microsoft Windows Resource Checker
  (SFC.exe) program generates in Windows Vista cbs.log
  http://support.Microsoft.com/kb/928228

  The log can give you the answer if there is a corrupted driver. (Says not all the)
  possible driver problems).

  Also run CheckDisk, so we cannot exclude as much as possible of the corruption.

  How to run the check disk at startup in Vista
  http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

  -------------------------------------------------------------------------

  Often drivers up-to-date will help, usually video, sound, network card (NIC), WiFi, part 3
  keyboard and mouse, as well as of other major device drivers.

  Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
  http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htm

  How to install a device driver in Vista Device Manager
  http://www.Vistax64.com/tutorials/193584-Device-Manager-install-driver.html

  How to disable automatic driver Installation in Windows Vista - drivers
  http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
  http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx

  -------------------------------------------------------------------------

  How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
  quit unexpectedly
  http://support.Microsoft.com/kb/958233

  Troubleshooting, STOP error blue screen Vista
  http://www.chicagotech.NET/Vista/vistabluescreen.htm

  Understanding and decoding BSOD (blue screen of death) Messages
  http://www.Taranfx.com/blog/?p=692

  Windows - troubleshooting blue screen errors
  http://KB.wisc.edu/page.php?id=7033

  -------------------------------------------------------------------------

  In some cases, it may be necessary.

  The Options or Vista recovery disk Startup Repair

  How to do a startup repair
  http://www.Vistax64.com/tutorials/91467-startup-repair.html

  This tells you how to access the System Recovery Options and/or a Vista DVD
  http://windowshelp.Microsoft.com/Windows/en-us/help/326b756b-1601-435e-99D0-1585439470351033.mspx

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

• SearchFilterHost.exe using 50% + cpu - not a new computer power

  Since yesterday SearchFilterHost.exe uses 50%-90% of my cpu power. I had the current installation of windows on this computer since a year or two ago and the temptation of power today my hard drive.  I tried stopping the service, but he returned after about a minute of it being stopped. This makes it difficult to make my computer work correctly.

  Hello

  Were there any changes (hardware or software) to the computer before the show?

  SearchFilterHost.exe is the process of Windows search. He is involved in indexing, caching, etc.

  Method 1: Disable it. File extension XML to be indexed in Indexing Options and check if the problem is resolved.

  http://Windows.Microsoft.com/en-us/Windows7/improve-Windows-searches-using-the-index-frequently-asked-questions

  Method 2: Run a full scan of the system using the Microsoft Safety Scanner to eliminate any virus/malware problem.
   
  http://www.Microsoft.com/security/scanner/en-us/default.aspx
  Note:
  The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.
   
   
  Hope this information helps.

• Compare multiple columns and update a column based on the comparison

  Hi all

  I have to update the column STATUS of the slot structure of the table.

  Status should be 'P' if all the columns count are equal on the other should be "F".

  The value of the column can be "NA'. If the value is NA, then avoid this comparison column; compare only other 3 columns.

  My output should look like below.

  State of cnt1, cnt2 cnt3 ID cnt4

  1   4       4       4     4       P

  2   4       5       4     4       F

  3 4 4 NA 4 P

  NA 4 4 3 4

  I tried with the statemnt with BOX WHEN conditions and DECODE UPDATE, but could not succeed, can someone please help

  To do this, if you use my statement in response #11 box (Re: Re: comparison of multi-column and update a column based on the comparison of)