How to make a query faster

Similar Questions

• How to make the query more efficient

  Hi all

  I use the following query in my app that works very well. Although I'm not an expert in PL/SQL, can someone please suggest how can I make the query more efficient? Because I use the same contract for every query table. Only difference is that in the name of the condition column. Again I am showing same column comments for each request. I was wondering if I can join these 3 and do 1 single request if possible

  DECLARE
  v_CONTRACTNO varchar2(100);
  v_CHILDCONTRACTNO varchar2(100);
  v_SOURCESYSTEM varchar2(100);
  
  BEGIN
  begin
  SELECT comments
  into v_CONTRACTNO
  from user_col_comments
    where TABLE_NAME = 'CONTRACT'
  and COLUMN_NAME = 'CONTRACTNO';
  end;
  begin
  SELECT comments
  into v_CHILDCONTRACTNO
  from user_col_comments
    where TABLE_NAME = 'CONTRACT'
  and COLUMN_NAME = 'CHILDCONTRACTNO';
  end;
  begin
  SELECT comments
  into v_SOURCESYSTEM
  from user_col_comments
    where TABLE_NAME = 'CONTRACT'
  and COLUMN_NAME = 'SOURCESYSTEM';
  end;
  END;
  

  Thanks in advance...

  Concerning

  Nabila

  Hi, Nabila,

  The nabila Islam wrote:

  Hi all

  I use the following query in my app that works very well. Although I'm not an expert in PL/SQL, can someone please suggest how can I make the query more efficient? Because I use the same contract for every query table. Only difference is that in the name of the condition column. Again I am showing same column comments for each request. I was wondering if I can join these 3 and do 1 single request if possible

  1. DECLARE
  2. v_CONTRACTNO varchar2 (100);
  3. v_CHILDCONTRACTNO varchar2 (100);
  4. v_SOURCESYSTEM varchar2 (100);
  5. BEGIN
  6. Start
  7. SOME comments
  8. in v_CONTRACTNO
  9. of user_col_comments
  10. where TABLE_NAME = 'CONTRACT '.
  11. and COLUMN_NAME = 'CONTRACTNO ';
  12. end;
  13. Start
  14. SOME comments
  15. in v_CHILDCONTRACTNO
  16. of user_col_comments
  17. where TABLE_NAME = 'CONTRACT '.
  18. and COLUMN_NAME = 'CHILDCONTRACTNO ';
  19. end;
  20. Start
  21. SOME comments
  22. in v_SOURCESYSTEM
  23. of user_col_comments
  24. where TABLE_NAME = 'CONTRACT '.
  25. and COLUMN_NAME = 'SOURCESYSTEM ';
  26. end;
  27. END;

  Thanks in advance...

  Concerning

  Nabila

  Of course, you can get all 3 values in a query.  Here's one way:

  SELECT contractno, childcontractno, sourcesystem

  IN v_contractno, v_childcontractno, v_sourcesystem

  Of user_col_comments

  PIVOT (MIN (comments)

  FOR column_name IN ('CONTRACTNO' AS contractno

  'CHILDCONTRACTNO' AS childcontractno

  'SOURCESYSTEM' AS sourcesystem

  )

  )

  WHERE table_name = 'CONTRACT '.

  ;

  But I doubt that it makes things very slow.   If your PL/SQL performance is poor, I suspect that the cause is somewhere that you haven't posted.

• How to make the query AS a parameter inside... ?

  Hello all :)
  
  I want to create the view object, where the query using oracle AS with the value of the parameter inside (variable binding), like this:
  
  SELECT WhLokasi.LOKASI_ID,
  WhLokasi.DESKRIPSI,
  WhLokasi.BARIS_KE,
  WhLokasi.KOLOM_KE,
  WhLokasi.SUBKOLOM_KE
  OF WH_LOKASI WhLokasi
  WHERE AS WhLokasi.DESKRIPSI * 'setting' * AND WhLokasi.BARIS_KE AS * 'parameter. "
  
  someone help me... Please... : d
  
  THX
  agungdmt

  Hi agungdmt,

  You have several options which are all explained in the developersguide.

  First use a bindvariable and encode the LIKE statement in the where clause of your viewObject (Dev Guide Chapter 5.10.1 how to add Variables to link to a definition of view object).
  It also shows an example

  select PERSON_ID, EMAIL, FIRST_NAME, LAST_NAME
  from PERSONS
  where (upper(FIRST_NAME) like upper(:TheName)||'%'
  or upper(LAST_NAME) like upper(:TheName)||'%')
  and PERSON_ID between :LowUserId and :HighUserId
  order by EMAIL
  

  Second option is to create and use named viewCriteria (5.11.1 how to create named view declaratively criteria).

  Third, and I think that this is not what you need at the present time, is to add where clause when executing (5.10.5 How to add a WHERE Clause with named Bind Variables when running)

  If I where you, I would choose the first or second option.

  Good luck

  Luc Bors

• How to make my load fast mac at startup?

  Hi, I noticed that my mac takes a lot of time to load at startup, I wonder if there are somethings I can for my mac to fast load at startup.

  Select Macintosh HD as the startup disk.

  'The value default startup disk' http://support.apple.com/kb/HT1310

  Reset the PRAM.   http://support.Apple.com/kb/PH18761

  Reset the SMC.    Choose the appropriate method.

  https://support.Apple.com/en-us/HT201295

  Boot mode safe.  http://support.Apple.com/en-us/HT1564

• Excell using only 1 quad core, how to make it run faster?

  Hello I'm in Excel with a certain calculation. It's very slow, because using only 1 on the quad core dell E6510. I already change the priority, but it changes nothing. affinity, the 4 cores are available for Excel. I have Excel 2007 with windows XP for 64-bit. What can I do to get runnign excell faster and use more memory?

  See the section called "MTC" in http://msdn.microsoft.com/en-us/library/office/ff700514.aspx

  If this does not help, re - ask your question in forum Excel 2007.

• How to make the query in a single query? No Union only please...

  Hello

  I have a series of about 18 queries that find charges in many scenarios. I wanted to have a single query to do this. which displays the result in a single line. Is it possible, I heard analytical functions are good options, but I am new to Oracle. Please help me.

  Select count (*) total_count emp; -100

  Select coun (*) MGR_count emp where job = "MGR" - 10

  Select count (*) dept_count emp where deptno in (10,20) - 75

  output...

  ----------

  TOTAL_COUNT MGR_COUNT DEPT_COUNT
  100                                   10             75

  Thank you

  Hello

  Here's one way:

  SELECT COUNT (*) TOTAL

  , COUNTY (CASE job WHEN = END "MGR", 1) AS mgr_count

  , COUNT (CASE WHEN deptno IN (10, 20) THEN 1 END) AS dept_count

  FROM table_x

  ;

  Instead of putting the conditions in a clause WHERE (where they would exclude whole lines), put the conditions in a CASE expression, where they affect only this column.

• How to call a query of the support bean?

  Hi all
  
  Another question for you guys:
  
  I did a page jspx with an entry form and a "submit" button.
  When I click the button submit, the action in my grain of support my_action is executed.
  This is the code:
  
  
  public BindingContainer {} getBindings()
  Return BindingContext.getCurrent () .getCurrentBindingsEntry ();
  }
  
  public String my_action() {}
  BindingContainer links = getBindings();
  OperationBinding operationBinding = bindings.getOperationBinding("EmployeesView");
  Object result = operationBinding.execute ();
  If (! operationBinding.getErrors () .isEmpty ()) {}
  Returns a null value.
  }
  }
  
  I was hoping that the "EmployeesView" query has been run in this way, but I get the following exception:
  
  java.lang.ClassCastException: oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding cannot be cast to oracle.binding.OperationBinding
  
  
  So how should I run query EmployeesView?
  
  
  Second part of the question: what happens if I typed the name of the employee in my form, and I want to
  run a query that selects all employees with the same name?
  How to make a query with a variable as input in the WHERE clause?
  
  Thanks in advance.
  
  Published by: Facehugger on 7-apr-2010 11:15

  In this case use example 9-13, access to the Interface of Client Application Module in a JSF Backing Bean using a link of Action named:
  http://download.Oracle.com/docs/CD/E15523_01/Web.1111/b31974/bcservices.htm#sthref918

  So rather than get an operation binding - get you the pointer to the AM across the link - line 4.
  Then on the AM you can call the service method, or instead, use the findViewObject method to locate your specific VO, change and then run the query on the matter. Then, wrap everything in the VO.hasNext () and use the following method on your VO for the data lines.
  And then you are iterating over the lines of the VO and add them to any list/collection you pass to the BPEL.

  This video could help in terms of interaction with a VO and get the lines:
  http://www.YouTube.com/watch?v=bgawJD4yPeY&feature=youtube_gdata

• How can I make Photoshop run faster, or how to increase performance?

  Hello

  How can I make Photoshop run faster, or how to increase performance?

  Help, please.

  Kind regards

  Techvedic

  Nice day!

  Please read this:

  Optimize performance. Photoshop CS4, CS5, CS6, CC

  If you have any additional questions, please read this (specifically"to provide relevant information to get faster answers" "):

  http://forums.Adobe.com/docs/doc-2325

  Kind regards

  Pfaffenbichler

  (edited)

• How to make this simple sql run faster?

  Here is a very simple sql, but it takes too long to finish as an hour or more, and the problem is in the table. It's a huge table with 17660025 lines.
  In addition, upd_dt is indexed.

  select distinct (dstn_type) from ims_ets_prty_msge where ims_ets_prty_msge.upd_dt > sysdate - 30;

  Execution plan seems to be no problem: (is 9i, and I do not think that it would not perform better if the UNIQUE HASH is used instead of SORT UNIQUE)

  -----------------------------------------------------------------------------------------
  | Id  | Operation                    |  Name                    | Rows  | Bytes | Cost  |
  -----------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT             |                          |     6 |    78 |  1409 |
  |   1 |  SORT UNIQUE                 |                          |     6 |    78 |  1409 |
  |   2 |   TABLE ACCESS BY INDEX ROWID| IMS_ETS_PRTY_MSGE        |   856K|    10M|    10 |
  |*  3 |    INDEX RANGE SCAN          | IMS_ETS_PRTY_MSGE_INDX5  |   154K|       |     2 |
  -----------------------------------------------------------------------------------------
   
  Predicate Information (identified by operation id):
  ---------------------------------------------------
   
     3 - access("IMS_ETS_PRTY_MSGE"."UPD_DT">SYSDATE@!-30)
   
  Note: cpu costing is off

  Here is some info on the table

  NUM_ROWS BLOCKS  EMPTY_BLOCKS AVG_SPACE CHAIN_CNT AVG_ROW_LEN
  17129540      455259     622           502             455278      188

  The thing is that we must make it run faster.
  And all I can think is to create a bitmap on dstn_type (low cardinality) index and partition the table using upd_dt;
  
  So my question would be is anyway that we can get a better response time without having to make that kind of change?
  Or is this kind of change really help?
  
  Any thoughts would be appreciated!
  
  Thank you

  Have you thought about putting an index on (upd_dt, dstn_type)?

  With the query you posted, and this index, it should be possible to use a full scan of the index, no visit to the table at all.

  A bitmap index would not be a good idea, if it is an OLTP application / table.

• (Updated report) SQL query - may not know how to make one

  Hi people,
  
  Can someone tell me how to make a report where the data can be updated? Not an interactive report, SQL report that selects a single row. The only options in the menu dropdown I see are "SQL query" and 'SQL Query (body of function from PL/SQL returning SQL query)', but I have a report elsewhere that says: this type are "SQL Query (updated report)", but I do not remember how :(
  
  Thank you very much
  
  -Adam

  Hi Adam,.

  An updated report is a 'tabular form' - see: http://download.oracle.com/docs/cd/E10513_01/doc/appdev.310/e10497/frm_tabular.htm#CHDFBHDB

  Andy

• HP Pavillion MS235: HP Pavillion MS235 All in One - how to make it faster?

  I would like to make the PC faster.  We had for some time, there isn't much about it then, but I would like to give to my son for his school work and games.  It's just slow.  Everything you do, takes so long.  No viruses have WebRoot on it.  Any ideas or advice?

  The concept of the IOA is done for convenience. I look at the specifications.  Its processor is a 1.6 Ghz chip, RAM (memory) is maximum at 4 GB. It has never considered a game machine with this configuration.  You can not change anything.

• How to make fast-forward/reverse fast functions when you use VideoDisplay

  I use 'VideoDisplay' forum for progressive download of the videoes from a server. Is anyone know how to add functions to fast-forward/reverse fast using Actionscript 3 with VideoDisplay object?
  or is it all still to do when reading videoes by progressive download?
  
  Thanks in advance.

  I guess that for fast forward/backward you talk more than a simple binding position of the VideoDisplay to a slider control. There's a thread here interesting Rewind:

  http://www.ActionScript.org/forums/showthread.php3?t=161866

  HTH,
  Matt Horn
  Flex docs

• How to make a profile on my Facebook photo in jpeg or gif format?

  How to make a profile on my Facebook photo in jpeg or gif format?

  Hello

   
  1. what operating system you are using on the computer?
  2. are you trying to download or trying to convert the image format?
  
  Alternatively, you can view the query on the forum of Facebook to improve the assistance:
  http://www.Facebook.com/help/

• I accidentally put my pictures folder in the bin and emptied. How to make a comeback?

  II accidentally put my pictures folder in the bin and emptied!  How to make a comeback?

  If they are not in your Recycle Bin, restore it from your backup.

  If you do not have backups, then you will need to use the specialist recovery software (search the Web) yourself or get a professional company to do it for you at great expense. The most important thing to remember here is that after you have deleted your files, they still exist, but are considered as a free space on your hard drive and can so be replaced by your PC at any time - use your PC only so much it is necessary to recover the files. The more you use your PC more the chances of your files become corrupted and unrecoverable.

  Some people recommend

  http://www.Piriform.com/Recuva

  recovery software. However, I have not used, so I can't personally recommend.

  For later use, if anything either on your PC is valuable or irreplaceable, you must save it to a separate drive. Hard drives are mechanical devices with very fast moving parts that can fail without warning at any time. There are many other ways to lose too much data.

• How to make a music video .vob to work in movie maker? __

  Remember - this is a public forum so never post private information such as numbers of mail or telephone!

  Ideas:

  • You have problems with programs
  • Error messages
  • Recent changes to your computer
  • What you have already tried to solve the problem

  How to make a music video .vob to work in movie maker? __

  ========================================
  First you try to rename the .vob to .mpg or .avi file and try
  to import... If Movie Maker accepts the file, drag it on the timeline
  and publish (save) in .wmv format in a folder on your hard drive
  drive. Then re-import the .wmv file and you are ready to change.

  In addition, you will need software to convert the .vob file to the
  .wmv format. The following freeware can be worth a try:

  SUPER
  Universal Player Encoder & Renderer
  http://www.videohelp.com/tools/Super
  (the download mirror site is faster)

  (FWIW... it is always a good practice to create one)
  System restore point before installing new software)

  After installing the program GREAT... open...
  you will see two small circles at the top left
  corner of the screen... check the UPPER circle.

  Now... Drag/Drop your. VOB file in the current field.

  Output container... Choose wmv...

  Video scale size / no change

  Left, click the Encode button.

  Choice: A Simple Profile / OK...

  Wait... wait longer...

  (FWIW... I have better luck with video if I'm not
  try to multi-task while a file is being converted)

  When the file is converted, you should find it in...
  Program Files / eRightSoft / Super / exit.

  Or... you can type... CTRL + O.. o open the Save
  Window and choose a backup folder.

  Good luck...

  Volunteer - MS - MVP - Digital Media Experience J - Notice_This is not tech support_I'm volunteer - Solutions that work for me may not work for you - * proceed at your own risk *.