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  • Best practice for bulk eCommerce product upload?

    - by Or W
    I'm thinking about opening a large online store for Jewelry, the one thing that really bothers me is managing the actual operation of taking pictures, uploading and describing all the products. I'm trying to figure out the best way to do it, in terms of performance or the least time consuming. Just a few things to keep in mind I'll have over 1,000 items in the online store I'll have 3-4 pictures for each item, I'm using a DSLR camera if it makes any difference. I'm going to probably use Magento, unless you have better experience with another eCommerce platform that will help me get this done quickly. I'll need to randomly(?) create a product code for each item.

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  • Sending JSON to an ASP.NET MVC Action Method Argument

    Javier G Money Lozano, one of the good folks involved with C4MVC, recently wrote a blog post on posting JSON (JavaScript Object Notation) encoded data to an MVC controller action. In his post, he describes an interesting approach of using a custom model binder to bind sent JSON data to an argument of an action method. Unfortunately, his sample left out the custom model binder and only demonstrates how to retrieve JSON data sent from a controller action, not how to send the JSON to the action method....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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  • Next Best Action: an emerging engagement paradigm can elevate customer experience to the next level

    - by Richard Lefebvre
    As customer interactions increase across an expanding number of communication channels, business leaders are struggling to understand and engage with each customer effectively. To address this challenge, leading organizations are adopting strategies around “next best action,” a decision-support model that systematically identifies the next best step to take in the customer conversation—whether that action is providing additional information or targeted services, presenting a unique offer, or taking no action at all... Read the complete article - by Mark A. Stevens (vice president, Insight and Customer Strategy, at Oracle) - here

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  • Using Bulk Operations with Coherence Off-Heap Storage

    - by jpurdy
    Some NamedCache methods (including clear(), entrySet(Filter), aggregate(Filter, …), invoke(Filter, …)) may generate large intermediate results. The size of these intermediate results may result in out-of-memory exceptions on cache servers, and in some cases on cache clients. This may be particularly problematic if out-of-memory exceptions occur on more than one server (since these operations may be cluster-wide) or if these exceptions cause additional memory use on the surviving servers as they take over partitions from the failed servers. This may be particularly problematic with clusters that use off-heap storage (such as NIO or Elastic Data storage options), since these storage options allow greater than normal cache sizes but do nothing to address the size of intermediate results or final result sets. One workaround is to use a PartitionedFilter, which allows the application to break up a larger operation into a number of smaller operations, each targeting either a set of partitions (useful for reducing the load on each cache server) or a set of members (useful for managing client result set sizes). It is also possible to return a key set, and then pull in the full entries using that key set. This also allows the application to take advantage of near caching, though this may be of limited value if the result is large enough to result in near cache thrashing.

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  • BULK INSERT problem in mysql

    - by kartiku
    Hi, I get an error with the following sql command for bulk insert....any help would be appreciated. BULK INSERT libra.faculty FROM 'd\:faculty.csv' WITH ( FIELDTERMINATOR = ',', ROWTERMINATOR = '\n' ); Here's the error message ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'BULK INSERT libra.faculty FROM 'd:\faculty.csv' WITH ( FIELDTERMINATOR = ',', RO' at line 1

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  • Update table instantly or “Bulk” Update in database later? And is it advisable?

    - by Mestika
    Hi, I have a question regarding a semi-constant update in a database. In short it is regarding a checkout function on a web page, which each time the checkout function is evoked it do five steps. I want to try to optimize this function and have my eye on a step where I update a table each time the checkout is performed. I take the information retrieved from the shopping cart and then update the table in question. I do have some indexes on the table, the gain from those are greater than leaving them so this is a cost I’m willing to take. Now, my question is. Could it in some way regarding to performance be better to not update the table instantly but collect every checkout items and save them in some way (maybe in a file) and then at a specific time (or several times) at day take this file and then update the table with the new information. Then I started thinking about if there was a possibility to use some sort of Bulk Update to take a file, hashmap, array (or?) and then update it. And I’m using IBM DB2 version 9.7 Mestika

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  • What is causing this SQL 2005 Primary Key Deadlock between two real-time bulk upserts?

    - by skimania
    Here's the scenario: I've got a table called MarketDataCurrent (MDC) that has live updating stock prices. I've got one process called 'LiveFeed' which reads prices streaming from the wire, queues up inserts, and uses a 'bulk upload to temp table then insert/update to MDC table.' (BulkUpsert) I've got another process which then reads this data, computes other data, and then saves the results back into the same table, using a similar BulkUpsert stored proc. Thirdly, there are a multitude of users running a C# Gui polling the MDC table and reading updates from it. Now, during the day when the data is changing rapidly, things run pretty smoothly, but then, after market hours, we've recently started seeing an increasing number of Deadlock exceptions coming out of the database, nowadays we see 10-20 a day. The imporant thing to note here is that these happen when the values are NOT changing. Here's all the relevant info: Table Def: CREATE TABLE [dbo].[MarketDataCurrent]( [MDID] [int] NOT NULL, [LastUpdate] [datetime] NOT NULL, [Value] [float] NOT NULL, [Source] [varchar](20) NULL, CONSTRAINT [PK_MarketDataCurrent] PRIMARY KEY CLUSTERED ( [MDID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] - stackoverflow wont let me post images until my reputation goes up to 10, so i'll add them as soon as you bump me up, hopefully as a result of this question. ![alt text][1] [1]: http://farm5.static.flickr.com/4049/4690759452_6b94ff7b34.jpg I've got a Sql Profiler Trace Running, catching the deadlocks, and here's what all the graphs look like. stackoverflow wont let me post images until my reputation goes up to 10, so i'll add them as soon as you bump me up, hopefully as a result of this question. ![alt text][2] [2]: http://farm5.static.flickr.com/4035/4690125231_78d84c9e15_b.jpg Process 258 is called the following 'BulkUpsert' stored proc, repeatedly, while 73 is calling the next one: ALTER proc [dbo].[MarketDataCurrent_BulkUpload] @updateTime datetime, @source varchar(10) as begin transaction update c with (rowlock) set LastUpdate = getdate(), Value = t.Value, Source = @source from MarketDataCurrent c INNER JOIN #MDTUP t ON c.MDID = t.mdid where c.lastUpdate < @updateTime and c.mdid not in (select mdid from MarketData where LiveFeedTicker is not null and PriceSource like 'LiveFeed.%') and c.value <> t.value insert into MarketDataCurrent with (rowlock) select MDID, getdate(), Value, @source from #MDTUP where mdid not in (select mdid from MarketDataCurrent with (nolock)) and mdid not in (select mdid from MarketData where LiveFeedTicker is not null and PriceSource like 'LiveFeed.%') commit And the other one: ALTER PROCEDURE [dbo].[MarketDataCurrent_LiveFeedUpload] AS begin transaction -- Update existing mdid UPDATE c WITH (ROWLOCK) SET LastUpdate = t.LastUpdate, Value = t.Value, Source = t.Source FROM MarketDataCurrent c INNER JOIN #TEMPTABLE2 t ON c.MDID = t.mdid; -- Insert new MDID INSERT INTO MarketDataCurrent with (ROWLOCK) SELECT * FROM #TEMPTABLE2 WHERE MDID NOT IN (SELECT MDID FROM MarketDataCurrent with (NOLOCK)) -- Clean up the temp table DELETE #TEMPTABLE2 commit To clarify, those Temp Tables are being created by the C# code on the same connection and are populated using the C# SqlBulkCopy class. To me it looks like it's deadlocking on the PK of the table, so I tried removing that PK and switching to a Unique Constraint instead but that increased the number of deadlocks 10-fold. I'm totally lost as to what to do about this situation and am open to just about any suggestion. HELP!!

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  • Struts 2 how to display messages saved in a Interceptor which would redirec to another action?

    - by mui13
    in my interceptor, if user doesn't have enough right, there would be a warn message: public String intercept(ActionInvocation invocation) throws Exception { ActionContext actionContext = invocation.getInvocationContext(); Map<String, Object> sessionMap = actionContext.getSession(); User loginUser = (User) sessionMap.get("user"); Object action = invocation.getAction(); if (loginUser != null && loginUser.getRole().getId() != Constant.AUTHORITY_ADMIN) { ((ValidationAware) action).addFieldError("user.authority", ((DefaultAction) action).getText("user.action.authority.not.enough")); return DefaultAction.HOME_PAGE; } return invocation.invoke(); } then, it would redirect to "HOME_PAGE" action, if success, display information in the jsp. So how to display the warn message? i have used two interceptors configed in strust.xml, for admin right requirment: <interceptor-stack name="authorityStack"> <interceptor-ref name="authority" /> <interceptor-ref name="defaultStack" /> <interceptor-ref name="store"> <param name="operationMode">STORE</param> </interceptor-ref> </interceptor-stack> default is: <interceptor-stack name="default"> <interceptor-ref name="login" /> <interceptor-ref name="defaultStack" /> <interceptor-ref name="store"> <param name="operationMode">AUTOMATIC</param> </interceptor-ref> </interceptor-stack>

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  • Struts. Go back to same page after an action

    - by framara
    Hi there, my situation is the following: I have a project with JSP, Struts and a lot of actions. Lets say that I have these 3 main groups {contacts.do, calendar.do and notes.do} with lot of actions in each of them. I have an action unrelated to all of them but since I didn't know where to put it I just chose contacts. My aim is after the action, to go back to the page I was but since the action is place in contacts it returns to the default action of contacts. Is there anything I could do for this purpose? Thank you.

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  • SharePoint and COMException (0x80004005): Cannot complete this action

    - by Damon
    I ran into a small issue today working on a deployment.  We were moving a custom ASP.NET control from my development environment into a SharePoint layout page on a staging environment .  I was expecting some minor issues to arise since I had developed the control in an ASP.NET website project, but after getting everything moved over we got an obscure COMException error the that looked like this: Cannot complete this action. Please try again. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.COMException: Cannot complete this action. [COMException (0x80004005): Cannot complete this action. .Lengthy stack trace goes here. Everything in the custom control was built using managed code, so we weren't sure why a COMException would suddenly appear. The control made use of an ITemplate to define its UI, so there was a lot of markup and binding code inside the template. As such, we started taking chunks of the template out of the layout page and eventually the error went away.  It was being caused by a section of code where we were calling a custom utility method inside some binding code: <%# WebUtility.FormatDecimal(.) %> Solution: It turns out that we were missing an Assembly and Import directive at the top of the page to let the page know where to find this method.  After adding these to the page, the error went away and everything worked great.  So a COMException (0x80004005) Cannot complete this action error is just SharePoint's friendly way of letting you know you're missing an assembly or imports reference.

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  • Level editor event system, how to translate event to game action

    - by Martino Wullems
    Hello, I've been busy trying to create a level editor for a tile based game i'm working on. It's all going pretty fine, the only thing i'm having trouble with is creating a simple event system. Let's say the player steps on a particulair tile that had the action "teleport" assigned to it in the editor. The teleport string is saved in the tile object as a variable. When creating the tilegrid an actionmanager class scans the action variable and assigns actions to the variable. public static class ActionManager { public static function ParseTileAction(tile:Tile) { switch(tile.action) { case "TELEPORT": //assign action here break; } } } Now this is an collision event, so I guess I should also provide an object to colide with the tile. But what if it would have to count for collision with all objects in the world? Also, checking for collisions in the actionmanager class doesn't seem very efficient. Am I even on the right track here? I'm new to game design so I could be completly off track. Any tips on how handeling and creating events using an editor is usually done would be great. The main problem i'm having is the Thanks in advance.

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  • ASP.NET MVC: Moving code from controller action to service layer

    - by DigiMortal
    I fixed one controller action in my application that doesn’t seemed good enough for me. It wasn’t big move I did but worth to show to beginners how nice code you can write when using correct layering in your application. As an example I use code from my posting ASP.NET MVC: How to implement invitation codes support. Problematic controller action Although my controller action works well I don’t like how it looks. It is too much for controller action in my opinion. [HttpPost] public ActionResult GetAccess(string accessCode) {     if(string.IsNullOrEmpty(accessCode.Trim()))     {         ModelState.AddModelError("accessCode", "Insert invitation code!");         return View();     }       Guid accessGuid;       try     {         accessGuid = Guid.Parse(accessCode);     }     catch     {         ModelState.AddModelError("accessCode", "Incorrect format of invitation code!");         return View();                    }       using(var ctx = new EventsEntities())     {         var user = ctx.GetNewUserByAccessCode(accessGuid);         if(user == null)         {             ModelState.AddModelError("accessCode", "Cannot find account with given invitation code!");             return View();         }           user.UserToken = User.Identity.GetUserToken();         ctx.SaveChanges();     }       Session["UserId"] = accessGuid;       return Redirect("~/admin"); } Looking at this code my first idea is that all this access code stuff must be located somewhere else. We have working functionality in wrong place and we should do something about it. Service layer I add layers to my application very carefully because I don’t like to use hand grenade to kill a fly. When I see real need for some layer and it doesn’t add too much complexity I will add new layer. Right now it is good time to add service layer to my small application. After that it is time to move code to service layer and inject service class to controller. public interface IUserService {     bool ClaimAccessCode(string accessCode, string userToken,                          out string errorMessage);       // Other methods of user service } I need this interface when writing unit tests because I need fake service that doesn’t communicate with database and other external sources. public class UserService : IUserService {     private readonly IDataContext _context;       public UserService(IDataContext context)     {         _context = context;     }       public bool ClaimAccessCode(string accessCode, string userToken, out string errorMessage)     {         if (string.IsNullOrEmpty(accessCode.Trim()))         {             errorMessage = "Insert invitation code!";             return false;         }           Guid accessGuid;         if (!Guid.TryParse(accessCode, out accessGuid))         {             errorMessage = "Incorrect format of invitation code!";             return false;         }           var user = _context.GetNewUserByAccessCode(accessGuid);         if (user == null)         {             errorMessage = "Cannot find account with given invitation code!";             return false;         }           user.UserToken = userToken;         _context.SaveChanges();           errorMessage = string.Empty;         return true;     } } Right now I used simple solution for errors and made access code claiming method to follow usual TrySomething() methods pattern. This way I can keep error messages and their retrieval away from controller and in controller I just mediate error message from service to view. Controller Now all the code is moved to service layer and we need also some modifications to controller code so it makes use of users service. I don’t show here DI/IoC details about how to give service instance to controller. GetAccess() action of controller looks like this right now. [HttpPost] public ActionResult GetAccess(string accessCode) {     var userToken = User.Identity.GetUserToken();     string errorMessage;       if (!_userService.ClaimAccessCode(accessCode, userToken,                                       out errorMessage))     {                       ModelState.AddModelError("accessCode", errorMessage);         return View();     }       Session["UserId"] = Guid.Parse(accessCode);     return Redirect("~/admin"); } It’s short and nice now and it deals with web site part of access code claiming. In the case of error user is shown access code claiming view with error message that ClaimAccessCode() method returns as output parameter. If everything goes fine then access code is reserved for current user and user is authenticated. Conclusion When controller action grows big you have to move code to layers it actually belongs. In this posting I showed you how I moved access code claiming functionality from controller action to user service class that belongs to service layer of my application. As the result I have controller action that coordinates the user interaction when going through access code claiming process. Controller communicates with service layer and gets information about how access code claiming succeeded.

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  • Use constructor or setter method?

    - by user633600
    I am working on a UI code where I have an Action class, something like this - public class MyAction extends Action { public MyAction() { setText("My Action Text"); setToolTip("My Action Tool tip"); setImage("Some Image"); } } When this Action class was created it was pretty much assumed that the Action class wont be customizable (in a sense- its text, tooltip or image will be not be changed anywhere in the code). Of late, now we are in need of changing the action text at some location in code. So I suggested my co-worker to remove the hardcoded action text from the constructor and accept it as an argument, so that everybody is forced to pass the action text. Something like this code below - public class MyAction extends Action { public MyAction(String actionText) { setText(actionText); setTooltip("My Action tool tip); setImage("My Image"); } } He however thinks that since setText() method belongs to base class. It can be flexibly used to pass the action text wherever action instance is created. That way, there is no need to change the existing MyAction class. So his code would look something like this. MyAction action = new MyAction(); //this creates action instance with the hardcoded text action.setText("User required new action text"); //overwrite the exisitng text. I am not sure if that is a correct way to deal with problem. I think in above mentioned case user is anyway going to change the text, so why not force him while constructing the action. The only benefit I see with the original code is that user can create Action class without much thinking about setting text.

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  • WiX custom action with DTF... quite confused...

    - by Joshua
    Okay, I have decided the only way I can do what I want to do with WiX (thanks to an old installer I didn't write that I now have to upgrade) is with some CUSTOM ACTIONS. Basically, I need to back up a file before the RemoveExistingProducts and restore that file again after RemoveExistingProducts. I think this is what's called a "type 2 custom action." The sequencing I think I understand, however, what I don't understand is first of all how I pass data to my C# action (the directory the file is in from the WiX) and how to reference my C# (DTF?) action with the Binary and CustomAction tags. Also, does all this need to be in a tag? All the examples show it that way. Here is what I have so far in the .WXS file... <Binary Id="backupSettingsAction.dll" SourceFile="backupSettingsAction.CA.dll"/> <CustomAction Id="BackupSettingsAction" BinaryKey="backupSettingsAction.dll" DllEntry="CustomAction" Execute="immediate" /> <InstallExecuteSequence> <Custom Action="backupSettingsAction.dll" Before="InstallInitialize"/> <RemoveExistingProducts After="InstallFinalize" /> <Custom Action="restoreSettingsAction.dll" After="RemoveExistingFiles"/> </InstallExecuteSequence> The file I need to back up is a settings file from the previous install (which needs to remain intact), it is located in the directory: <Directory Id="CommonAppDataFolder" Name="CommonAppData"> <Directory Id="CommonAppDataPathways" Name="Pathways" /> </Directory> And even has a Component tag for it, though I need to back the file up that exists already: <Component Id="Settings" Guid="A3513208-4F12-4496-B609-197812B4A953" NeverOverwrite="yes" > <File Id="settingsXml" ShortName="SETTINGS.XML" Name="Settings.xml" DiskId="1" Source="\\fileserver\Release\Pathways\Dependencies\Settings\settings.xml" Vital="yes" /> </Component> And this is referencing the C# file that Visual Studio (2005) created for me: namespace backupSettingsAction { public class CustomActions { [CustomAction] public static ActionResult CustomAction1(Session session) { session.Log("backing up settings file"); //do I hardcode the directory and name of the file in here, or can I pass them in? return ActionResult.Success; } } } Any help is greatly apprecaited. Thank you!

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  • Custom Rule Action in Outlook

    - by Zee99
    How to create my own custom action in Microsoft Outlook Rules? In Outlook, when creating a rule in the Rules wizard, we set first the conditions and then set the actions that we choose from a list of predefined actions. Is there a way to add my own action to the existing actions programmatically? I also see an action called custom action, when i click it it opens up a small window with an empty combobox, can i add my custom action there, and how?

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  • Avoid being blocked by web mail companies for mass/bulk emailing ?

    - by Johannes
    Our company is sending out a lot of emails per day and planning to send even more in future. (thousands) Also there are mass mailouts as well in the ten thousands every now and then. Anybody has experience with hotmail, yahoo (web.de, gmx.net) and similar webmail companies blocking your emails because "too many from the same source in a period of time" have been sent to them? What can be done about it? Spreading email mailouts over a whole day/night? At what rate? (we are talking about legal emailing just to make sure...)

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  • Save and restore multiple layers within a Photoshop action that flattens

    - by SuitCase
    I'm editing comic pages with layers - "background", "foreground", "lineart" and "over lineart". I have a Photoshop action that includes a Mode-Bitmap command, which requires the image to be flattened. I need this part of the action because I use the Halftone Screen method of reducing the greyscale image to bitmap on the "background" layer, creating a certain effect. I am pretty sure there is no filter or anything else that gives the same effect. After the mode is changed to bitmap, my action changes things back to greyscale for further changes. This poses a problem. I only want to do the bitmap mode change on the background layer, and after I do the change I want to restore the layer structure as it was - with the foreground, lineart and over lineart layers back above the now-halftoned background. My current method of saving these layers and restoring them is clumsy. My action is able to automatically save the "foreground" layer by selecting it, cutting it, then pasting it back in after the mode changing is over. But, for the "ink" and "over ink" layers, I have to manually cut these layers, paste them into a new document, and later re-cut and re-paste after running my action. This is so clunky! What I would like to know is if it's possible to set aside my layers in an automated way, and then bring them back in, also in an automated way. An ugly (but functional) solution would be to replicate my actions of creating new documents and pasting them temporarily there, but I don't think Photoshop allows you to do things outside of your current document with an action. It seems to me that the only way to do what I want is to use the "hack" of incorporating the clipboard into the action as a clever hack, but that leaves me stuck as I have two more layers that can't fit onto that same clipboard. Help or suggestions would be appreciated. I can keep on doing it manually, but to have a comprehensive action would save me a ton of time.

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  • How to insert bulk data into mysql table from asp.net at once.

    - by kranthi
    Hi, I have a requirement that I need to read an excel sheet using asp.net/C# and insert all the records into mysql table.The excel sheet consists of around 2000 rows and 50 columns. Currently,upon reading the excel records ,I am inserting the records one by one using a prepare statement into mysql table.But its taking around 70 secs to do so because of the huge data. I've also thought of creating a new datarow, assigning values to each cell,adding the resulting datarow to datatable and finally calling dataadapter.update(...).But it seems to be complex because I got around 50 columns and hence I'll have to assign 50 values to the datarow. Could someone please suggest if there is an alternate to improve the performance of the insertion? Thanks

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  • Visual Studio: How to override the default "Build Action" for certain extension types per project or solution?

    - by Lukasz Podolak
    I'm serving my asp.net mvc views from many assemblies and copying views to the main application on post-build event. This works, however, I realized, that when I change something in view and just hit F5, changes are not included. What I have to do to see changes is to: save, build<- explicitly clicking, and then hit F5. However, it's pretty annoying solution. I discovered that setting Build action to "Embedded Resource" on view solves the problem as well, however other devs may not remember that they have to do this after adding every view to the solution. Is there a way to override the default build action for certain file extensions, such as: *.aspx, *.ascx in project or (better) in solution ? What I've found is an ability to add this setting globally, per machine, but I do not want to do that (link: http://blog.andreloker.de/post/2010/07/02/Visual-Studio-default-build-action-for-non-default-file-types.aspx) Any ideas ?

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  • Is the time cost constant when bulk inserting data into an indexed table?

    - by SiLent SoNG
    I have created an archive table which will store data for selecting only. Daily there will be a program to transfer a batch of records into the archive table. There are several columns which are indexed; while others are not. I am concerned with time cost per batch insertion: - 1st batch insertion: N1 - 2nd batch insertion: N2 - 3rd batch insertion: N3 The question is: will N1, N2, and N3 roughly be the same, or N3 N2 N1? That is, will the time cost be a constant or incremental, with existence of several indexes? All indexes are non-clustered. The archive table structure is this: create table document ( doc_id int unsigned primary key, owner_id int, -- indexed title smalltext, country char(2), year year(4), time datetime, key ix_owner(owner_id) }

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  • Does anyone know of a good free bulk upload tool for web apps?

    - by Ev
    I have a web application in which a user has to upload images to a gallery. At the moment they need to upload one image at a time so it's pretty tedious. I'd like to implement a system where they could potentially drag and drop files into the browser, or select a folder to upload. Any ideas? Thanks in advance! (By the way; it's a .Net App if it makes a difference, but I was thinking most of the work would be happening client side so shouldn't matter) -Ev

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