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  • SQL SERVER – Create Primary Key with Specific Name when Creating Table

    - by pinaldave
    It is interesting how sometimes the documentation of simple concepts is not available online. I had received email from one of the reader where he has asked how to create Primary key with a specific name when creating the table itself. He said, he knows the method where he can create the table and then apply the primary key with specific name. The attached code was as follows: CREATE TABLE [dbo].[TestTable]( [ID] [int] IDENTITY(1,1) NOT NULL, [FirstName] [varchar](100) NULL) GO ALTER TABLE [dbo].[TestTable] ADD  CONSTRAINT [PK_TestTable] PRIMARY KEY CLUSTERED ([ID] ASC) GO He wanted to know if we can create Primary Key as part of the table name as well, and also give it a name at the same time. Though it would look very normal to all experienced developers, it can be still confusing to many. Here is the quick code that functions as the above code in one single statement. CREATE TABLE [dbo].[TestTable]( [ID] [int] IDENTITY(1,1) NOT NULL, [FirstName] [varchar](100) NULL CONSTRAINT [PK_TestTable] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, Readers Question, SQL, SQL Authority, SQL Constraint and Keys, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Linqpad with Table Storage

    - by kaleidoscope
    LinqPad as we all know has been a wonderful tool for running ad-hoc queries. With Azure Table storage in picture LinqPad was no longer in picture and we shifted focus to Cloud Storage Studio only to realize the limited and strange querying capabilities of CSS. With some tweaking to Linqpad we can get the comfortable old shoe of ad-hoc queries with LinqPad in the Azure Table storage. Steps: 1. Start LinqPad 2. Right Click in the query window and select “Query Properties” 3. In The Additional References add reference to Microsoft.WindowsAzure.StorageClient, System.Data.Services.Client.dll and the assembly containing the implementation of the DataServiceContext class tied to the Azure table storage. 4. In the additional namespace imports import the same three namespaces mentioned above. 5. Then we need to provide following details. a. Table storage account name and shared key. b. DataServiceContext implementing class in your code. c. A LINQ query. e.x. var storageAccountName = "myStorageAccount";  // Enter valid storage account name var storageSharedKey = "mysharedKey"; // Enter valid storage account shared key var uri = new System.Uri("http://table.core.windows.net/"); var storageAccountInfo = new CloudStorageAccount(new StorageCredentialsAccountKey(storageAccountName, storageSharedKey), false); var serviceContext = new TweetPollDataServiceContext(storageAccountInfo); // Specify the DataServiceContext implementation // The query var query = from row in serviceContext.Table select row;         query.Dump(); Sarang, K

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  • MySQL – Beginning Temporary Tables in MySQL

    - by Pinal Dave
    MySQL supports Temporary tables to store the resultsets temporarily for a given connection. Temporary tables are created with the keyword TEMPORARY along with the CREATE TABLE statement. Let us create the temporary table named Temp CREATE TEMPORARY TABLE TEMP (id INT); Now you can find out the column names using DESC command DESC TEMP; The above returns the following result This table can be accessed only for the current connection and it can be used like a permanent table and automatically dropped when the connection is closed. However, you can not find temporary tables using INFORMATION_SCHEMA. TABLES system view. It will only list out the permanent tables. MySQL usually stores the data of temporary tables in memory and processed by Memory Storage engine. But if the data size is too large MySQL automatically converts this to the on – disk table and use MyISAM engine. You can also create a permanent table with the same name of a temporary table in the same connection. However the structure of permanent table is visible only if the temporary table with the same name is dropped. Let us create a permanent table with the same name Temp as below CREATE TABLE TEMP (id INT, names VARCHAR(100)); Now running the following command stills gives you the structure of the temporary table temp created earlier. DESC TEMP; You can drop the temporary table using DROP TEMPORARY TABLE command; DROP TEMPORARY TABLE TEMP; After you executed the temporary table, run the following command DESC TEMP; Now you will see the structure of the permanent table named temp In summary – If there is a Temporary Table in MySQL it gets first priority over the permanent table in the session. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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  • Dealing With Table Borders In OOXML

    - by Tim Murphy
    Note: Cross posted from Coding The Document. Permalink Formatting tables in a document programmatically can be a very complex task.  This is the major reason which we start our document generation projects with templates instead of building components in a document by hand. Borders are on aspect of a table that you may want to fomat.  Borders are used to make certain content in a table stand out.  If you need to conditionally set and remove borders there is something that you need to be aware of.  Even in OOXML you have the concepts of styles, inheriting styles and overriding styles. When Word defines a table it will reference a global style such as “TableGrid”.  This style will include the borders for the table.  Specifically the InsideHorizontalBorder and InsideVerticalBorder define the borders for the cells.  These can be overridden by the TableCellBorders collection of a particular cell.  Adding a double right border on a cell is as easy as the couple of lines of code below. wordprocessing.TableCellBorders borders = new wordprocessing.TableCellBorders(); borders.RightBorder = new RightBorder(){Val = BorderValues.Double, Color = "000000", ThemeColor = ThemeColorValues.Text1, Size = (UInt32Value)4U, Space = (UInt32Value)0U }; cell.TableCellProperties.Append(borders); If I want to revert back to the table’s style for cell borders I simply need to remove all children from the TableCellBorders collection.  It is like removing a class identifier from a TD tag in HTML.  The style in the parent object takes back over. With the knowledge of how the borders work you can take the concept and apply it to other effects of styles. del.icio.us Tags: OOXML,Office Open XML,Microsoft Office 2007,Microsoft Word 2007,table,style,border

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  • frame lock networking

    - by kochol
    I'm developing an RTS game and I want to add multiplayer support to my game. I picked the easiest technique to implement for start frame locking technique. I used server client networking architecture (I think it's my first mistake I think using peer to peer is a better one for this) On game update every clients send their commands and maybe receive some command then render the frame and wait for all clients to send their update complete message then all of them can go for the next frame. I send commands and all logic is calculated on the clients based on commands but the clients can go out of sync easily. Every AI controlled units make different decisions on each clients What I have to do to sync my game? Do you suggest me a better network architecture or technique?

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  • Naming Convention for Dedicated Thread Locking objects

    - by Chris Sinclair
    A relatively minor question, but I haven't been able to find official documentation or even blog opinion/discussions on it. Simply put: when I have a private object whose sole purpose is to serve for private lock, what do I name that object? class MyClass { private object LockingObject = new object(); void DoSomething() { lock(LockingObject) { //do something } } } What should we name LockingObject here? Also consider not just the name of the variable but how it looks in-code when locking. I've seen various examples, but seemingly no solid go-to advice: Plenty of usages of SyncRoot (and variations such as _syncRoot). Code Sample: lock(SyncRoot), lock(_syncRoot) This appears to be influenced by VB's equivalent SyncLock statement, the SyncRoot property that exists on some of the ICollection classes and part of some kind of SyncRoot design pattern (which arguably is a bad idea) Being in a C# context, not sure if I'd want to have a VBish naming. Even worse, in VB naming the variable the same as the keyword. Not sure if this would be a source of confusion or not. thisLock and lockThis from the MSDN articles: C# lock Statement, VB SyncLock Statement Code Sample: lock(thisLock), lock(lockThis) Not sure if these were named minimally purely for the example or not Kind of weird if we're using this within a static class/method. Several usages of PadLock (of varying casing) Code Sample: lock(PadLock), lock(padlock) Not bad, but my only beef is it unsurprisingly invokes the image of a physical "padlock" which I tend to not associate with the abstract threading concept. Naming the lock based on what it's intending to lock Code Sample: lock(messagesLock), lock(DictionaryLock), lock(commandQueueLock) In the VB SyncRoot MSDN page example, it has a simpleMessageList example with a private messagesLock object I don't think it's a good idea to name the lock against the type you're locking around ("DictionaryLock") as that's an implementation detail that may change. I prefer naming around the concept/object you're locking ("messagesLock" or "commandQueueLock") Interestingly, I very rarely see this naming convention for locking objects in code samples online or on StackOverflow. Question: What's your opinion generally about naming private locking objects? Recently, I've started naming them ThreadLock (so kinda like option 3), but I'm finding myself questioning that name. I'm frequently using this locking pattern (in the code sample provided above) throughout my applications so I thought it might make sense to get a more professional opinion/discussion about a solid naming convention for them. Thanks!

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  • LibreOffice Writer Error due to a lock file

    - by Brad
    Every time I try to open a word document I get this error. LibreOffice 3.5 Either another instance of LibreOffice is accessing your personal settings or your personal settings are locked. Simultaneous access can lead to inconsistencies in your personal settings. Before continuing, you should make sure user "closes LibreOffice on host". Do you want to continue? I've been onto different forums to find out a remedy but nothing yet. I've recently done a fresh install of 12.04 (64bit) and have been having some issues with different programs and have been able to work through most of them but this one, I'm lost.

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  • ubuntu cant be installed as it says GPU lock

    - by piyush bhardwaj
    i have win 7 running on my system i just wanna move to ubuntu 12.10 desktop version 36 bit but when i try to install the CD gets loaded start screen comes but suddenly texts line appears and screen goes black the text are - [189.463934] [drm] [noveau] 0000:02:00.0: GPU LOCK- switching to software fbcon [194.248014] [drm] [noveau] 0000:02:00.0: failed to idle channel 1 [199.504009] [drm] [noveau] 0000:02:00.0: failed to idle channel 3 and it goes on.....like this iam new to the linux system so dnt know much abt it ..so if any body can help me to solve my prblm.. my laptop is of HCL and it has 3 gb ram or 350 gb hard disk with nvidia graphic card ..it has 2 ghz pentium dual core it was manufactured in 2009.. so if any body can help i would be greatful and can be able to join ubuntu..

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  • How to make xlock use the first key I hit as a part of my password

    - by alesplin
    I just switched from Arch Linux to Ubuntu 10.10. I'm running the Fluxbox window manager, and I use xlockmore to lock my screen with the following key shortcut: 192 :Exec xlock-mode marquee +usefirst -icongeometry 240x240 -message "back in a minute..." The problem I'm having is that xlock is definitely not using my first key as part of my password. Instead, it uses some randomized fade pattern to fade to the password screen. I find this highly annoying, as when I get back to my desk and start entering my password it doesn't register password characters until the fade pattern is complete. I've also tried the following modifications with no difference: 192 :Exec xlock -mode marquee -usefirst -icongeometry 240x240 -message "back in a minute..." 192 :Exec xlock -mode marquee -icongeometry 240x240 -message "back in a minute..." The first example worked flawlessly on Arch. Does Ubuntu have some sort of system default that you can't override on the command-line?

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  • Determine All SQL Server Table Sizes

    Im doing some work to migrate and optimize a large-ish (40GB) SQL Server database at the moment.  Moving such a database between data centers over the Internet is not without its challenges.  In my case, virtually all of the size of the database is the result of one table, which has over 200M rows of data.  To determine the size of this table on disk, you can run the sp_TableSize stored procedure, like so: EXEC sp_spaceused lq_ActivityLog This results in the following: Of course this is only showing one table if you have a lot of tables and need to know which ones are taking up the most space, it would be nice if you could run a query to list all of the tables, perhaps ordered by the space theyre taking up.  Thanks to Mitchel Sellers (and Gregg Starks CURSOR template) and a tiny bit of my own edits, now you can!  Create the stored procedure below and call it to see a listing of all user tables in your database, ordered by their reserved space. -- Lists Space Used for all user tablesCREATE PROCEDURE GetAllTableSizesASDECLARE @TableName VARCHAR(100)DECLARE tableCursor CURSOR FORWARD_ONLYFOR select [name]from dbo.sysobjects where OBJECTPROPERTY(id, N'IsUserTable') = 1FOR READ ONLYCREATE TABLE #TempTable( tableName varchar(100), numberofRows varchar(100), reservedSize varchar(50), dataSize varchar(50), indexSize varchar(50), unusedSize varchar(50))OPEN tableCursorWHILE (1=1)BEGIN FETCH NEXT FROM tableCursor INTO @TableName IF(@@FETCH_STATUS<>0) BREAK; INSERT #TempTable EXEC sp_spaceused @TableNameENDCLOSE tableCursorDEALLOCATE tableCursorUPDATE #TempTableSET reservedSize = REPLACE(reservedSize, ' KB', '')SELECT tableName 'Table Name',numberofRows 'Total Rows',reservedSize 'Reserved KB',dataSize 'Data Size',indexSize 'Index Size',unusedSize 'Unused Size'FROM #TempTableORDER BY CONVERT(bigint,reservedSize) DESCDROP TABLE #TempTableGO Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How to Generate a Create Table DDL Script Along With Its Related Tables

    - by Compudicted
    Have you ever wondered when creating table diagrams in SQL Server Management Studio (SSMS) how slickly you can add related tables to it by just right-clicking on the interesting table name? Have you also ever needed to script those related tables including the master one? And you discovered you have dozens of related tables? Or may be no SSMS at your disposal? That was me one day. Well, creativity to the rescue! I Binged and Googled around until I found more or less what I wanted, but it was all involving T-SQL, yeah, a long and convoluted CROSS APPLYs, then I saw a PowerShell solution that I quickly adopted to my needs (I am not referencing any particular author because it was a mashup): 1: ########################################################################################################### 2: # Created by: Arthur Zubarev on Oct 14, 2012 # 3: # Synopsys: Generate file containing the root table CREATE (DDL) script along with all its related tables # 4: ########################################################################################################### 5:   6: [System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.SMO') | out-null 7:   8: $RootTableName = "TableName" # The table name, no schema name needed 9:   10: $srv = new-Object Microsoft.SqlServer.Management.Smo.Server("TargetSQLServerName") 11: $conContext = $srv.ConnectionContext 12: $conContext.LoginSecure = $True 13: # In case the integrated security is not used uncomment below 14: #$conContext.Login = "sa" 15: #$conContext.Password = "sapassword" 16: $db = New-Object Microsoft.SqlServer.Management.Smo.Database 17: $db = $srv.Databases.Item("TargetDatabase") 18:   19: $scrp = New-Object Microsoft.SqlServer.Management.Smo.Scripter($srv) 20: $scrp.Options.NoFileGroup = $True 21: $scrp.Options.AppendToFile = $False 22: $scrp.Options.ClusteredIndexes = $False 23: $scrp.Options.DriAll = $False 24: $scrp.Options.ScriptDrops = $False 25: $scrp.Options.IncludeHeaders = $True 26: $scrp.Options.ToFileOnly = $True 27: $scrp.Options.Indexes = $False 28: $scrp.Options.WithDependencies = $True 29: $scrp.Options.FileName = 'C:\TEMP\TargetFileName.SQL' 30:   31: $smoObjects = New-Object Microsoft.SqlServer.Management.Smo.UrnCollection 32: Foreach ($tb in $db.Tables) 33: { 34: Write-Host -foregroundcolor yellow "Table name being processed" $tb.Name 35: 36: If ($tb.IsSystemObject -eq $FALSE -and $tb.Name -eq $RootTableName) # feel free to customize the selection condition 37: { 38: Write-Host -foregroundcolor magenta $tb.Name "table and its related tables added to be scripted." 39: $smoObjects.Add($tb.Urn) 40: } 41: } 42:   43: # The actual act of scripting 44: $sc = $scrp.Script($smoObjects) 45:   46: Write-host -foregroundcolor green $RootTableName "and its related tables have been scripted to the target file." Enjoy!

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  • How to Lock Down IE 10 by Disabling Flash in Windows 8

    - by Taylor Gibb
    Microsoft now includes Flash along with their Internet Explorer browser in Windows 8. Flash has been known as a big culprit when it comes to security vulnerabilities in the past, so here’s how to disable it. Note: We have outlined two methods for achieving the same goal, there is no need to do both. HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • Problem trying to lock framerate at 60 FPS

    - by shad0w
    I've written a simple class to limit the framerate of my current project. But it does not work as it should. Here is the code: void FpsCounter::Process() { deltaTime = static_cast<double>(frameTimer.GetMsecs()); waitTime = 1000.0/fpsLimit - deltaTime; frameTimer.Reset(); if(waitTime <= 0) { std::cout << "error, waittime: " << waitTime << std::endl; } else { SDL_Delay(static_cast<Uint32>(waitTime)); } if(deltaTime == 0) { currFps = -1; } else { currFps = 1000/deltaTime; } std::cout << "--Timings--" << std::endl; std::cout << "Delta: \t" << deltaTime << std::endl; std::cout << "Delay: \t" << waitTime << std::endl; std::cout << "FPS: \t" << currFps << std::endl; std::cout << "-- --" << std::endl; } Timer::Timer() { startMsecs = 0; } Timer::~Timer() { // TODO Auto-generated destructor stub } void Timer::Start() { started = true; paused = false; Reset(); } void Timer::Pause() { if(started && !paused) { paused = true; pausedMsecs = SDL_GetTicks() - startMsecs; } } void Timer::Resume() { if(paused) { paused = false; startMsecs = SDL_GetTicks() - pausedMsecs; pausedMsecs = 0; } } int Timer::GetMsecs() { if(started) { if(paused) { return pausedMsecs; } else { return SDL_GetTicks() - startMsecs; } } return 0; } void Timer::Reset() { startMsecs = SDL_GetTicks(); } The "FpsCounter::Process()" Method is called everytime at the end of my gameloop. I've got the problem that the loop is correctly delayed only every second frame, so it runs one frame delayed at 60 FPS and the next without delay at over 1000 fps. I am searching the error quite a while now, but I do not find it. I hope somebody can point me in the right direction.

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  • Give permissions for packages downloaded from the internet and lock them in Ubuntu 12.04 sidebar

    - by JuninhoDG
    I downloaded NetBeans IDE and Eclipse IDE from the internet and installed then. Well, the Eclipse IDE works fine, but when I execute NetBeans IDE directly from the link, without sudo permission, it shows me lots of error telling that some files are read only. This does not happens when I'm using the terminal to call the .sh script with sudo permissions. Another thing that bothers me: How can I fix my shortcuts in the Ubuntu's 12.04 sidebar? I want to combine a launcher with enough permissions to do everything it's needing and fix it in my sidebar. Is it possible?

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  • If I use locks, can my algorithm still be lock-free?

    - by Joe Pension
    A common definition of lock-free is that at least one process makes progress. 1 If I have a simple data structure such as a queue, protected by a lock, then one process can always make progress, as one process can acquire the lock, do what it wants, and release it. So does it meet the definition of lock-free? 1 See eg M. Herlihy, V. Luchangco, and M. Moir. Obstruction-free synchronization: Double-ended queues as an example. In Distributed Computing, 2003. "It is lock-free if it ensures only that some thread always makes progress".

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  • Lock screen elements frozen on desktop

    - by user286968
    I have finally made the switch from Windows to Ubuntu and now have to ask the first question because search did not help me this time. (Please help me in a newb-friendly way) The problem is easily described: The elements shown in the lockscreen on boot (ubuntu logo in the middle and watermark in bottom left corner) stay there even when I'm entering desktop. How can I remove them again? They haven't been there in the first place, but after updating Ubuntu with Update Center, the problem occured. As I cant post an image here with my reputation, pls see this link: http://s30.postimg.org/age8fraww/Screenshot_from_2014_05_30_23_27_58.jpg Thanks for your help and time. Kind regards

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  • Dual Monitor Lock Screen Problem

    - by Justin Carver
    Ubuntu 12.04 Nvidia GTX 550-Ti x-swat Nvidia driver Problem: Using 2 monitors. When screen locks there is a blue box on top of the wallpaper and password dialog box that hides the field for entering your password or switching users. Problem is on 2 systems with similar hardware (Nvidia card, x-swat driver, dual monitors) You can still type your password in blindly and hit enter to login but it's irritating to not be able to see the dialog box.

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  • How do I prevent the Sleep button from locking the screen

    - by elmicha
    My keyboard has a Sleep button. I defined a shortcut in System Settings, Keyboard Shortcuts own settings (or similar), so that the Sleep buttons runs a script. That works. But since my upgrade to Oneiric, something also locks the screen (in the same way the screen is locked when I press Ctrl+Alt+L). Can I disable that behaviour? What's the name of that lock screen? I tried hiding gnome-screensaver and /etc/acpi/ and I looked in gconf-editor /apps/gnome-power-manager/buttons. I didn't find anything related in dconf-editor.

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  • Nautilus (File) 3.10.1 how to lock drag and drop bookmarks

    - by Davide Marchi
    From the new Nautilus releases exist the ability to create shortcut/bookmarks simply by drag&drop folder onto the nautilus left panel; However, this behavior can unintentionally create additional bookmarks if you are not very accurate when dragging files to bookmarks, especially by people with little experience in the use of computer. How is possible to disable the drag&drop bookmarks creation? Or ideally should be planning to implement the drag & drop mode only if you are running in conjunction with the press of a key on the keyboard ..

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  • how to update child records when updating the Master table using Linq [closed]

    - by user20358
    I currently use a general repositry class that can update only a single table like so public abstract class MyRepository<T> : IRepository<T> where T : class { protected IObjectSet<T> _objectSet; protected ObjectContext _context; public MyRepository(ObjectContext Context) { _objectSet = Context.CreateObjectSet<T>(); _context = Context; } public IQueryable<T> GetAll() { return _objectSet.AsQueryable(); } public IQueryable<T> Find(Expression<Func<T, bool>> filter) { return _objectSet.Where(filter); } public void Add(T entity) { _objectSet.AddObject(entity); _context.ObjectStateManager.ChangeObjectState(entity, System.Data.EntityState.Added); _context.SaveChanges(); } public void Update(T entity) { _context.ObjectStateManager.ChangeObjectState(entity, System.Data.EntityState.Modified); _context.SaveChanges(); } public void Delete(T entity) { _objectSet.Attach(entity); _context.ObjectStateManager.ChangeObjectState(entity, System.Data.EntityState.Deleted); _objectSet.DeleteObject(entity); _context.SaveChanges(); } } For every table class generated by my EDMX designer I create another class like this public class CustomerRepo : MyRepository<Customer> { public CustomerRepo (ObjectContext context) : base(context) { } } for any updates that I need to make to a particular table I do this: Customer CustomerObj = new Customer(); CustomerObj.Prop1 = ... CustomerObj.Prop2 = ... CustomerObj.Prop3 = ... CustomerRepo.Update(CustomerObj); This works perfectly well when I am updating just to the specific table called Customer. Now if I need to also update each row of another table which is a child of Customer called Orders what changes do I need to make to the class MyRepository. Orders table will have multiple records for a Customer record and multiple fields too, say for example Field1, Field2, Field3. So my questions are: 1.) If I only need to update Field1 of the Orders table for some rows based on a condition and Field2 for some other rows based on a different condition then what changes I need to do? 2.) If there is no such condition and all child rows need to be updated with the same value for all rows then what changes do I need to do? Thanks for taking the time. Look forward to your inputs...

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