Reg query

Hi all!

Please help me with this query:

View the details of the employees whose salary exceeds the average salary of their own LOCATION

Thank you
Anthony.

If you change your query using deptno instead of loc, the results remain the same:

SQL> select avg(e.sal)
  2       , d.deptno
  3    from emp e
  4       , dept d
  5   where d.deptno = e.deptno
  6   group by d.deptno
  7  /

AVG(E.SAL)     DEPTNO
---------- ----------
1566,66667         30
      2175         20
2916,66667         10

3 rijen zijn geselecteerd.

Note that the join to table dept can be ignored because emp also contains a column deptno.

Now if you want to select the average salary to each employee, you can use the table emp, like this:

SQL> select e.ename
  2       , e.sal
  3       , avg_sal.avg_sal
  4    from ( select avg(e.sal) avg_sal
  5                , d.deptno
  6             from emp e
  7                , dept d
  8            where d.deptno = e.deptno
  9            group by d.deptno
 10         ) avg_sal
 11       , emp e
 12   where e.deptno = avg_sal.deptno
 13  /

ENAME             SAL    AVG_SAL
---------- ---------- ----------
SMITH             800       2175
ALLEN            1600 1566,66667
WARD             1250 1566,66667
JONES            2975       2175
MARTIN           1250 1566,66667
BLAKE            2850 1566,66667
CLARK            2450 2916,66667
SCOTT            3000       2175
KING             5000 2916,66667
TURNER           1500 1566,66667
ADAMS            1100       2175
JAMES             950 1566,66667
FORD             3000       2175
MILLER           1300 2916,66667

14 rijen zijn geselecteerd.

And now, it becomes easy to select employees with an average more wise pay high Department.
Note that, apart from the mentioned optimization earlier, you can also pass the second access of table emp using analytical functions.

And if you don't want to see the average salary, you can use a subquery correlation like this:

SQL> select e.ename
  2       , e.sal
  3    from emp e
  4   where e.sal >
  5         ( select avg(e2.sal)
  6             from emp e2
  7            where e2.deptno = e.deptno
  8         )
  9  /

ENAME             SAL
---------- ----------
ALLEN            1600
JONES            2975
BLAKE            2850
SCOTT            3000
KING             5000
FORD             3000

6 rijen zijn geselecteerd.

I hope this helps.

Kind regards
Rob.

Tags: Database

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  • Free disk space on the C partition

    Separated from this thread.

    I am also having the same problem.  I am running Vista Home Premium SP2.  I was getting close to complete on my drive C (13% free space). I was shocked to see how quickly it filled up, almost as if he did it by himself.  I was downloading a lot so I had no idea how it happened.  I ran each program cleaning and each antivirus that I had to try to make room.  I cleaned up program files deleted a bunch of audio and video files, and it does not seem to do much more of a difference.  I shut down the computer for the night and is returned to him the next morning.  I ran and bought a few flash drives to transfer files more and when I booted up I checked the hard drive and it was back to 48% free space (as it was before).  I have no idea what happened, but so far, it seems to be fixed...?   one of the cleansers I ran also ccleaner.

    Free disk space
    Last updated 18/01/2014
     

    Content

    • To see how much space you have used and free
    • To see where the files are too much space
    • Disk Cleanup
    • System restore
    • Fix the basket
    • Fix temporary Internet files
    • Delete files in the system and the folder Temp of Service Profiles
    • Check the size of the swap file
    • Disable the hibernation
    • Compact the Windows databases use various
    • Delete the files updated by the Service Pack
    • Move your Documents
    • Remove saved files created by Photo Gallery
    • Which extends the size of the disk
    • Compress files
    • Turn off the low disk space warnings
    • Boost disk cleanup
     

    To see how much space you have used and free

    Start - All Programs - Accessories- Click with the right button on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    For the system drive

    WMIC volume where (DriveLetter = '% lecteur_systeme %') are legend, capacity, freespace List

    For all readers

    WMIC volume get/all, freespace, the ability, the legend

    If you want to store this info on your desktop

    WMIC /append:"%userprofile%\desktop\Free on disk space" volume get Caption, freespace format:htable

    To open double click on Free Disk Space on your desk or type

    Start "" "%userprofile%\desktop\Free report.HTML of disk space.

    Then come back here after cleaning and repeat these commands to see the difference.

    If for any reason, the wmic command does not work, use these two commands. Both take a lot of time.

    % Lecteur_systeme % - one defrag

    or

    dir %systemdrive%\*.*/a/s

     
    To see where the files are too much space
     
    It lists the number of files and the size of the folders on your drive. Each command is a subset, so you can run it better.
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).
     
     
    Then configure the command prompt. Right-click on the tab of the titlebar - Properties - Layout command prompt - and enter 1000 screen buffer size height and 43 (or 50) to Window Dimensions height. Change the color (color tab) and the police (police tab), if you want.
     
    To see the size of the folders in Documents, excluding images, video, or music files.
     
    for /f "Skip = 2 tokens = 3 ' set doc = A %%A in ('Reg query"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"/v"Personal"")
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "\/"^|findstr/l/v "photos video" ') @echo %j & echo. "
     
    To see the size of the folders in the music.
     
    for /f "Skip = 2 tokens = 4" %A in ('Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v 'My music' ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."

     
    To see the size of the image files.
     
    for /f "Skip = 2 tokens = 4" %A in (' Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" "My pictures" /v ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
    To see the size of the files in the video.
     
    for /f "Skip = 2 tokens = 4" %A in ('Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v 'My videos' ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
    To see the size of the files on the desktop.
     
    for /f "Skip = 2 tokens = 3 ' set doc = A %%A in ('Reg query"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"/v"Desktop"")
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."

    To see the size of the files in the Windows folder.
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("'%windir%' dir /a /s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     

    To see the size of the files in the Program Files folder.
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("'%ProgramFiles%' dir /a /s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
     

    Disk Cleanup
    To run Disk Cleanup, normal is to click with the right button on the drive in my computer (Start menu - computer), then Properties - general tab - Disk Cleanup button.
     
     
    Another way is menu Start - All Programs - Accessories - System - Disk Cleanup tools.
     
    Disk Cleanup can be started from the command line.
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

     
    To make your primary drive.
     
    cleanmgr letter
     
    Choose which lead to do.
     
    Cleanmgr
     
    See the last section of this post to see how to performance of disk cleanup.

     System restore

    With disk cleanup displays above the Other Options tab. You can delete all but the last System Restore point and see if that is too much space.

    System Restore uses 15% of the space normally. Change click Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type Regedit and navigate to

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg

    Double click on DiskPercent and click on decimal and change the value to the desired percentage,

    You can change the command prompt.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the size of the system restore folder.

    You don't normally have access to this folder. You will need to take possession, allow administrators to permission, then the size of the query.

    takeown /f "%systemdrive%\System Volume Information" / a r d y
    ICACLS "%systemdrive%\System Volume Information" / grant administrators: f, t, c, q
    dir "%systemdrive%\System Volume Information" / a/s

    To see the current percentage

    Reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg" /v DiskPercent

    It is in hexadecimal. The numbers are 0-9 and a-f. So 0xf is 15. 0x5 is 5, 0 x 9 is 9, 0xa is 10, 0 x 14 is 20.

    To set a different value.

    You can use decimal values to set. This affects 10% (in bold in the example and the last item in the line).

    Tracking Add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg" /v DiskPercent /t REG_DWORD /f /d 10
     
    To repair the system restore, file delete and restart the system restore.
      
    SC stop vss
    takeown /f "%systemdrive%\System Volume Information" / a r d y
    ICACLS "%systemdrive%\System Volume Information" / grant administrators: f, t, c, q
    e "%systemdrive%\System Volume Information" / q/s
    SC start vss

    Fix the basket

    Sometimes, files get lost in the trash. Remove the storage folders. It will be automatically re-created next time you delete a file or open the Recycle Bin. It will remove the trash and the files it contains for all users.

    Empty the trash.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the size of the files in the Recycle Bin

    It must have one or no files inside if you work. There should be a directory (folder) by user.

    dir % systemdrive%\$RECYCLE. BIN\ *. * /a /s

    To reset the trash

    e % systemdrive%\$RECYCLE. BIN/s/q

    Fix temporary Internet files

    Sometimes, files get lost in the temporary internet files folder. Delete the files. It will be automatically recreated the next time download you. It will remove the current user only.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the temporary internet files size empty files folder

    RunDll32.exe InetCpl.cpl, ClearMyTracksByProcess 8

    dir ' %userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\ *.» "*" '%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore\*.*' / a/s

    Then delete.

    Close Internet Explorer and the Explorer first. Some files may not remove at the moment, they can be deleted later.

    "%userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files" del /s /q

    also the DOM store, similar to TIF.

    "%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore" del /s /q

    So to see the new size.

    dir ' %userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\ *.» "*" '%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore\*.*' / a/s

     
    To see the size of the cache, type the following
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

     
    Reg query /v "Settings\5.0\Cache\Content Software" CacheLimit valid
    Use the calculator to convert hexadecimal into decimal. Start the Calculator (Start - All Programs - Accessories - calculator) and choose the menu display - scientific, then the menu display - Hex. Enter the value returned above. Menu display - decimal. To convert windows units divide by 1024 for kilobytes, divide by 1024 megabytes.
     
    Located between 50 MB and 250 MB. You can use decimal here. The unit is expressed in kilobytes. Here it is 250 megabytes (250 000 x 1024 bytes)
     
    Add tracking 'Software Settings\5.0\Cache\Content' v CacheLimit valid /t Reg_DWord /d 250000 f
      

    Delete files in the system and the folder Temp of Service Profiles

    The system temp folder is only used when no one connects. It is rarely used but never cleaned. Some services have their own temporary folder which is also cleaned.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To the list

    dir c:\windows\temp C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp/a/s

    To remove

    del C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\*.* C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\*.* c:\windows\temp\*.*/s/f/q

    Check the size of the swap file

    As a rule generally you want to your swap file slightly larger than the amount of memory that you have. It develops automatically but spread automatically. If you use hungery memory programs as this video editing should be bigger. If too big you can reduce and rush of space can be moved to another drive.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see what was your use

    WMIC pagefile get List

    To see the size of the file on disk

    dir /a c:\pagefile.sys

    To change the size or change the road see change the size of virtual memory in Start - Help and Support.

     

    Disable the hibernation

    The file shows up is the same size of installed memory. If this is not the case, turn off the computer in hibernation and save a lot of disk space.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see if it is on

    If the file will be found. If off the file won't be there.

    dir %systemdrive%\hiberfil.sys /a

    To turn off

    powercfg-h off

    Make a u-turn

    powercfg-h on

    Compact the Windows databases use various

    You can compact the various databases that Windows uses. This is the Windows Update, Windows Search, and certificates of security, Windows Mail, Windows Contacts, Windows, Windows Live and Internet Explorer ver 10 applications calendar.

    Close Windows Mail and Internet Explorer. Wait a minute for Internet Explorer release locks of sound files.

    See how much space taking up type which is below and note the total size (because it scrolls away).

    Start - All Programs - Accessories- Click with the right button on command prompt and choose Run As Administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    dir c:\*.edb c:\*.msmessagestore c:\WebCacheV*.dat c:\catdb/a/s

    Then at compact

    SC stop wuauserv
    stop bits SC
    SC stop wsearch
    SC stop cryptsvc
    for c:\ /r %A in (*.edb *.msmessagestore WebCacheV*.dat catdb *.) do esentutl.exe /p "%A" / o
    for c:\ /r %A in (*.edb *.msmessagestore WebCacheV*.dat catdb *.) do esentutl.exe /d "%A".
    SC start cryptsvc

    SC start wsearch

    SC start bits
    SC start wuauserv

    Then to delete some temporary files.

    del c:\*.integ.raw c:\TEMPDFRG*.edb/s

    To see the new size and compare it to the old size

    dir c:\*.edb c:\*.msmessagestore c:\WebCacheV*.dat c:\catdb/a/s

    If a program has a file open, you can use this procedure to find out which program.

    openfiles/local on

    Reset

    openfiles/query /v | findstr /i "WebCacheV [0-9] *------catdb \.edb \.msmessagestore .dat".

    Delete the files updated by the Service Pack

    See how much space taking up type which is below and note the total size (because it scrolls away). Also, note that the total is higher than it actually is.

    This will remove the ability to uninstall service packs.

    According to the service pack that Windows was provided with you can have both, one or none of these two files.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    dir /a /s c:\Windows\WinSxS

    Then type

    Vsp1cln.exe
    COMPCLN.exe

    To see the new size and compare it to the old size

     
    c:\windows\WinSxS dir /a /s

    Move your Documents

    If you have another disk, you can move the documents folder to it.

    Click with the right button on your Documents (or pictures, etc.) Office, videos, Contacts,) the tab file - Properties - location - move.

     

    Delete the thumbnail and icon Caches

    These files can contain thumbnails or icons of files deleted a long time ago. The files will be recreated if necessary.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste). The desktop and the start menu will disappear briefly.

    To see the size

    dir "% userprofile%\AppData\Local\*.db" "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db" /a

    then remove

    Taskkill /im explorer.exe/f
    attrib - r s h '% userprofile%\AppData\Local\*.db '.
    attrib - r s h '% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db '.
    del "% userprofile%\AppData\Local\*.db".
    del "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db".
    Explorer

    to check the new size

    dir "% userprofile%\AppData\Local\*.db" "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db" /a

     

    Remove saved files created by Photo Gallery

     

    Photo Gallery Windows makes a copy of any file that you are editing. Click Start - All Programs - Accessories - (or press the Windows key + R). Type

    Images of the hull: original

    Delete the ones you don't want.

    Which extends the size of the disk

    If all the space on the disk has not all been used it is possible to extend your drive.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    DiskPart

    then type

    Select the c volume:

    Then type to see in size

    the list volume

    then (it will work if possible or not as appropriate)

    extend

    type to display the new size

    the list volume

    then type exit

    output

    If you want advice on the extension of the partition type the following and paste the result back

    DiskPart

    list disk

    the list volume

    Select disk 0

    partition from the list

    Select disk 1

    partition from the list

    output

    To copy the final text right click in the window - Mark , then select the text and press enter.
     

    Compress files

    There are two ways to compress files in windows. Zip files and built-in file compression. It's built-in file compression. For more information on compression type zip in Start - Help and Support .

    Photos, music and video are already compressed. They can get larger if Windows tries to compress it any further. Also usually a bad idea to compress system files.

    If you have files of worksheet they can very well be compressed. If you have files, installation files, they can also be good candidates. Web pages are also good candidates.

    In Windows Explorer, blue file names means Tablet (it is the file system compression not aka zip files compressed files). Green filename means Encrypted.

    To disable file names colored, in Explorer - Tools menu (Alt + T)- display tab and then clear the check box for Show encrypted or compressed NTFS in color .

    Windows compression, encryption and security to work for the most part by applying attributes to a folder and the files in the folder inherit the folder.

    If you have all the files appropriate for compression, find them in solution, made Explorer right click - Properties - general -Advanced button tab - Compress contents to save disk space. Choose to apply to all files and folders when asked.

    To use a command line to compress the files in the Favorites folder.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    compact/c /s:"%userprofile%\Favorites." *

    Put in Favorites to compress files added

    compact/c /s:"%userprofile%\Favorites.

    To view the details of the compression of the Favorites folder

    Compact '% userprofile%\Favorites\*.* '.

     

     

    Turn off the low disk space warnings

    To disable the function to display the disk low space warnings.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    Tracking Add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" v "NoLowDiskSpaceChecks" /t REG_DWORD /d 1 f

    gpupdate/force

     

    Boost disk cleanup

    • Operation of disk cleanup
    • Schedule disk cleanup
    • Creating custom cleaners

    To see a list of products of cleaning disk cleanup.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    @echo. & @echo list of cleaners&@echo = & FOR /F "usebackq tokens = 8 delims =-' %i IN ('reg query 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches'") @echo %i

    
 List of cleaners
 ================
 Active Setup Temp Folders
 Content Indexer Cleaner
 Downloaded Program Files
 Hibernation File
 Internet Cache Files
 Memory Dump Files
 Microsoft_Event_Reporting_2.0_Temp_Files
 Offline Pages Files
 Old ChkDsk Files
 Previous Installations
 Recycle Bin
 Setup Log Files
 System error memory dump files
 System error minidump files
 Temporary Files
 Temporary Setup Files
 Temporary Sync Files
 Thumbnail Cache
 Upgrade Discarded Files
 Windows Error Reporting Archive Files
 Windows Error Reporting Queue Files
 Windows Error Reporting System Archive Files
 Windows Error Reporting System Queue Files
 WLX Thumbnail Cache
     

  • Urgent please help: How can I find on what fills my hard drive?

    My drive C guard fills, and I don't know why.  Yesterday, I removed more than 40 GB of files and delete a lot more (I emptied the Recycle Bin).  In the last 4 hours, filled an another 30 GB and I'm now in the red zone (5 GB in the last twenty minutes!).  I only kept a very small Word document on the hard drive.

    It only started past recently, in the last two weeks or more.  I am on Windows Vista and I have McAfee.  I recently completed a full scan and nothing significant has come.

    I have only 5 GB on my C drive on the left, and there is nothing more that I can remove it.  How can I find out what does this and how do I that to solve this problem?

    Any emergency assistance will be greatly appreciated!

    Thank you.

    Free disk space
    Last updated 18/01/2014
     

    Content

    • To see how much space you have used and free
    • To see where the files are too much space
    • Disk Cleanup
    • System restore
    • Fix the basket
    • Fix temporary Internet files
    • Delete files in the system and the folder Temp of Service Profiles
    • Check the size of the swap file
    • Disable the hibernation
    • Compact the Windows databases use various
    • Delete the files updated by the Service Pack
    • Move your Documents
    • Remove saved files created by Photo Gallery
    • Which extends the size of the disk
    • Compress files
    • Turn off the low disk space warnings
    • Boost disk cleanup
     

    To see how much space you have used and free

    Start - All Programs - Accessories- Click with the right button on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    For the system drive

    WMIC volume where (DriveLetter = '% lecteur_systeme %') are legend, capacity, freespace List

    For all readers

    WMIC volume get/all, freespace, the ability, the legend

    If you want to store this info on your desktop

    WMIC /append:"%userprofile%\desktop\Free on disk space" volume get Caption, freespace format:htable

    To open double click on Free Disk Space on your desk or type

    Start "" "%userprofile%\desktop\Free report.HTML of disk space.

    Then come back here after cleaning and repeat these commands to see the difference.

    If for any reason, the wmic command does not work, use these two commands. Both take a lot of time.

    % Lecteur_systeme % - one defrag

    or

    dir %systemdrive%\*.*/a/s

     
    To see where the files are too much space
     
    It lists the number of files and the size of the folders on your drive. Each command is a subset, so you can run it better.
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).
     
     
    Then configure the command prompt. Right-click on the tab of the titlebar - Properties - Layout command prompt - and enter 1000 screen buffer size height and 43 (or 50) to Window Dimensions height. Change the color (color tab) and the police (police tab), if you want.
     
    To see the size of the folders in Documents, excluding images, video, or music files.
     
    for /f "Skip = 2 tokens = 3 ' set doc = A %%A in ('Reg query"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"/v"Personal"")
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "\/"^|findstr/l/v "photos video" ') @echo %j & echo. "
     
    To see the size of the folders in the music.
     
    for /f "Skip = 2 tokens = 4" %A in ('Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v 'My music' ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."

     
    To see the size of the image files.
     
    for /f "Skip = 2 tokens = 4" %A in (' Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" "My pictures" /v ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
    To see the size of the files in the video.
     
    for /f "Skip = 2 tokens = 4" %A in ('Reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /v 'My videos' ") set Doc = A %
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
    To see the size of the files on the desktop.
     
    for /f "Skip = 2 tokens = 3 ' set doc = A %%A in ('Reg query"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"/v"Desktop"")
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("dir"% doc"/ a/s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."

    To see the size of the files in the Windows folder.
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("'%windir%' dir /a /s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     

    To see the size of the files in the Program Files folder.
     
    for /f "usebackq tokens = 2 * delims =" %i IN ("'%ProgramFiles%' dir /a /s ^ |") "." findstr/i/v "-/"') @echo %j & echo. "."
     
     

    Disk Cleanup
    To run Disk Cleanup, normal is to click with the right button on the drive in my computer (Start menu - computer), then Properties - general tab - Disk Cleanup button.
     
     
    Another way is menu Start - All Programs - Accessories - System - Disk Cleanup tools.
     
    Disk Cleanup can be started from the command line.
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

     
    To make your primary drive.
     
    cleanmgr letter
     
    Choose which lead to do.
     
    Cleanmgr
     
    See the last section of this post to see how to performance of disk cleanup.

     System restore

    With disk cleanup displays above the Other Options tab. You can delete all but the last System Restore point and see if that is too much space.

    System Restore uses 15% of the space normally. Change click Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type Regedit and navigate to

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg

    Double click on DiskPercent and click on decimal and change the value to the desired percentage,

    You can change the command prompt.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the size of the system restore folder.

    You don't normally have access to this folder. You will need to take possession, allow administrators to permission, then the size of the query.

    takeown /f "%systemdrive%\System Volume Information" / a r d y
    ICACLS "%systemdrive%\System Volume Information" / grant administrators: f, t, c, q
    dir "%systemdrive%\System Volume Information" / a/s

    To see the current percentage

    Reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg" /v DiskPercent

    It is in hexadecimal. The numbers are 0-9 and a-f. So 0xf is 15. 0x5 is 5, 0 x 9 is 9, 0xa is 10, 0 x 14 is 20.

    To set a different value.

    You can use decimal values to set. This affects 10% (in bold in the example and the last item in the line).

    Tracking Add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg" /v DiskPercent /t REG_DWORD /f /d 10
     
    To repair the system restore, file delete and restart the system restore.
      
    SC stop vss
    takeown /f "%systemdrive%\System Volume Information" / a r d y
    ICACLS "%systemdrive%\System Volume Information" / grant administrators: f, t, c, q
    e "%systemdrive%\System Volume Information" / q/s
    SC start vss

    Fix the basket

    Sometimes, files get lost in the trash. Remove the storage folders. It will be automatically re-created next time you delete a file or open the Recycle Bin. It will remove the trash and the files it contains for all users.

    Empty the trash.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the size of the files in the Recycle Bin

    It must have one or no files inside if you work. There should be a directory (folder) by user.

    dir % systemdrive%\$RECYCLE. BIN\ *. * /a /s

    To reset the trash

    e % systemdrive%\$RECYCLE. BIN/s/q

    Fix temporary Internet files

    Sometimes, files get lost in the temporary internet files folder. Delete the files. It will be automatically recreated the next time download you. It will remove the current user only.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see the temporary internet files size empty files folder

    RunDll32.exe InetCpl.cpl, ClearMyTracksByProcess 8

    dir ' %userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\ *.» "*" '%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore\*.*' / a/s

    Then delete.

    Close Internet Explorer and the Explorer first. Some files may not remove at the moment, they can be deleted later.

    "%userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files" del /s /q

    also the DOM store, similar to TIF.

    "%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore" del /s /q

    So to see the new size.

    dir ' %userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\ *.» "*" '%userprofile%\AppData\Local\Microsoft\Internet Explorer\DOMStore\*.*' / a/s

     
    To see the size of the cache, type the following
     

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

     
    Reg query /v "Settings\5.0\Cache\Content Software" CacheLimit valid
    Use the calculator to convert hexadecimal into decimal. Start the Calculator (Start - All Programs - Accessories - calculator) and choose the menu display - scientific, then the menu display - Hex. Enter the value returned above. Menu display - decimal. To convert windows units divide by 1024 for kilobytes, divide by 1024 megabytes.
     
    Located between 50 MB and 250 MB. You can use decimal here. The unit is expressed in kilobytes. Here it is 250 megabytes (250 000 x 1024 bytes)
     
    Add tracking 'Software Settings\5.0\Cache\Content' v CacheLimit valid /t Reg_DWord /d 250000 f
      

    Delete files in the system and the folder Temp of Service Profiles

    The system temp folder is only used when no one connects. It is rarely used but never cleaned. Some services have their own temporary folder which is also cleaned.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To the list

    dir c:\windows\temp C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp/a/s

    To remove

    del C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\*.* C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\*.* c:\windows\temp\*.*/s/f/q

    Check the size of the swap file

    As a rule generally you want to your swap file slightly larger than the amount of memory that you have. It develops automatically but spread automatically. If you use hungery memory programs as this video editing should be bigger. If too big you can reduce and rush of space can be moved to another drive.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see what was your use

    WMIC pagefile get List

    To see the size of the file on disk

    dir /a c:\pagefile.sys

    To change the size or change the road see change the size of virtual memory in Start - Help and Support.

     

    Disable the hibernation

    The file shows up is the same size of installed memory. If this is not the case, turn off the computer in hibernation and save a lot of disk space.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    To see if it is on

    If the file will be found. If off the file won't be there.

    dir %systemdrive%\hiberfil.sys /a

    To turn off

    powercfg-h off

    Make a u-turn

    powercfg-h on

    Compact the Windows databases use various

    You can compact the various databases that Windows uses. This is the Windows Update, Windows Search, and certificates of security, Windows Mail, Windows Contacts, Windows, Windows Live and Internet Explorer ver 10 applications calendar.

    Close Windows Mail and Internet Explorer. Wait a minute for Internet Explorer release locks of sound files.

    See how much space taking up type which is below and note the total size (because it scrolls away).

    Start - All Programs - Accessories- Click with the right button on command prompt and choose Run As Administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    dir c:\*.edb c:\*.msmessagestore c:\WebCacheV*.dat c:\catdb/a/s

    Then at compact

    SC stop wuauserv
    stop bits SC
    SC stop wsearch
    SC stop cryptsvc
    for c:\ /r %A in (*.edb *.msmessagestore WebCacheV*.dat catdb *.) do esentutl.exe /p "%A" / o
    for c:\ /r %A in (*.edb *.msmessagestore WebCacheV*.dat catdb *.) do esentutl.exe /d "%A".
    SC start cryptsvc

    SC start wsearch

    SC start bits
    SC start wuauserv

    Then to delete some temporary files.

    del c:\*.integ.raw c:\TEMPDFRG*.edb/s

    To see the new size and compare it to the old size

    dir c:\*.edb c:\*.msmessagestore c:\WebCacheV*.dat c:\catdb/a/s

    If a program has a file open, you can use this procedure to find out which program.

    openfiles/local on

    Reset

    openfiles/query /v | findstr /i "WebCacheV [0-9] *------catdb \.edb \.msmessagestore .dat".

    Delete the files updated by the Service Pack

    See how much space taking up type which is below and note the total size (because it scrolls away). Also, note that the total is higher than it actually is.

    This will remove the ability to uninstall service packs.

    According to the service pack that Windows was provided with you can have both, one or none of these two files.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    dir /a /s c:\Windows\WinSxS

    Then type

    Vsp1cln.exe
    COMPCLN.exe

    To see the new size and compare it to the old size

     
    c:\windows\WinSxS dir /a /s

    Move your Documents

    If you have another disk, you can move the documents folder to it.

    Click with the right button on your Documents (or pictures, etc.) Office, videos, Contacts,) the tab file - Properties - location - move.

     

    Delete the thumbnail and icon Caches

    These files can contain thumbnails or icons of files deleted a long time ago. The files will be recreated if necessary.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste). The desktop and the start menu will disappear briefly.

    To see the size

    dir "% userprofile%\AppData\Local\*.db" "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db" /a

    then remove

    Taskkill /im explorer.exe/f
    attrib - r s h '% userprofile%\AppData\Local\*.db '.
    attrib - r s h '% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db '.
    del "% userprofile%\AppData\Local\*.db".
    del "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db".
    Explorer

    to check the new size

    dir "% userprofile%\AppData\Local\*.db" "% userprofile%\AppData\Local\Microsoft\Windows\Explorer\*.db" /a

     

    Remove saved files created by Photo Gallery

     

    Photo Gallery Windows makes a copy of any file that you are editing. Click Start - All Programs - Accessories - (or press the Windows key + R). Type

    Images of the hull: original

    Delete the ones you don't want.

    Which extends the size of the disk

    If all the space on the disk has not all been used it is possible to extend your drive.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    DiskPart

    then type

    Select the c volume:

    Then type to see in size

    the list volume

    then (it will work if possible or not as appropriate)

    extend

    type to display the new size

    the list volume

    then type exit

    output

    If you want advice on the extension of the partition type the following and paste the result back

    DiskPart

    list disk

    the list volume

    Select disk 0

    partition from the list

    Select disk 1

    partition from the list

    output

    To copy the final text right click in the window - Mark , then select the text and press enter.
     

    Compress files

    There are two ways to compress files in windows. Zip files and built-in file compression. It's built-in file compression. For more information on compression type zip in Start - Help and Support .

    Photos, music and video are already compressed. They can get larger if Windows tries to compress it any further. Also usually a bad idea to compress system files.

    If you have files of worksheet they can very well be compressed. If you have files, installation files, they can also be good candidates. Web pages are also good candidates.

    In Windows Explorer, blue file names means Tablet (it is the file system compression not aka zip files compressed files). Green filename means Encrypted.

    To disable file names colored, in Explorer - Tools menu (Alt + T)- display tab and then clear the check box for Show encrypted or compressed NTFS in color .

    Windows compression, encryption and security to work for the most part by applying attributes to a folder and the files in the folder inherit the folder.

    If you have all the files appropriate for compression, find them in solution, made Explorer right click - Properties - general -Advanced button tab - Compress contents to save disk space. Choose to apply to all files and folders when asked.

    To use a command line to compress the files in the Favorites folder.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    compact/c /s:"%userprofile%\Favorites." *

    Put in Favorites to compress files added

    compact/c /s:"%userprofile%\Favorites.

    To view the details of the compression of the Favorites folder

    Compact '% userprofile%\Favorites\*.* '.

     

     

    Turn off the low disk space warnings

    To disable the function to display the disk low space warnings.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    Tracking Add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" v "NoLowDiskSpaceChecks" /t REG_DWORD /d 1 f

    gpupdate/force

     

    Boost disk cleanup

    • Operation of disk cleanup
    • Schedule disk cleanup
    • Creating custom cleaners

    To see a list of products of cleaning disk cleanup.

    Start - All Programs - Accessories - right on command prompt and choose run as administrator. Type (or copy and paste by clicking in the command prompt window and choose Paste).

    @echo. & @echo list of cleaners&@echo = & FOR /F "usebackq tokens = 8 delims =-' %i IN ('reg query 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches'") @echo %i

    
 List of cleaners
 ================
 Active Setup Temp Folders
 Content Indexer Cleaner
 Downloaded Program Files
 Hibernation File
 Internet Cache Files
 Memory Dump Files
 Microsoft_Event_Reporting_2.0_Temp_Files
 Offline Pages Files
 Old ChkDsk Files
 Previous Installations
 Recycle Bin
 Setup Log Files
 System error memory dump files
 System error minidump files
 Temporary Files
 Temporary Setup Files
 Temporary Sync Files
 Thumbnail Cache
 Upgrade Discarded Files
 Windows Error Reporting Archive Files
 Windows Error Reporting Queue Files
 Windows Error Reporting System Archive Files
 Windows Error Reporting System Queue Files
 WLX Thumbnail Cache
     

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