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  • What's the different between these 2 mysql queries? one using left join

    - by Lyon
    Hi, I see people using LEFT JOIN in their mysql queries to fetch data from two tables. But I normally do it without left join. Is there any differences besides the syntax, e.g. performance? Here's my normal query style: SELECT * FROM table1 as tbl1, table2 as tbl2 WHERE tbl1.id=tbl2.table_id as compared to SELECT * FROM table1 as tbl1 LEFT JOIN table2 as tbl2 on tbl1.id=tbl2.id Personally I prefer the first style...hmm..

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  • Can I use Code Igniter with Concrete5?

    - by SkippyFire
    I am building a site that will (obvisouly) have a front end public portion that I want to drive with Concrete5, but then it will also have a members section that I would like to build with Code Igniter. Does anyone have any idea how I could do that? I guess I could just throw the Code Igniter code into a sub directory, but would I run into any issues with that?

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  • problems adding an App Engine app to a Google Apps domains

    - by Ron
    We have been adding domains to our app without any issues for past couple months, following these instructions https://developers.google.com/appengine/articles/domains Since yesterday we have not been able to, when clicking Activate this service we get this error message "An error occurred while trying to install this application. Please try again later." We have tried this also with older domains and with different apps and getting the same error, so the problem seems to be more widespread, not isolated to particular domains / apps. Does anyone know how to solve? Thanks Ron

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  • SimpleRepository auto migrations with indexes

    - by scott
    I am using subsonic simplerepo with migrations in dev and it makes things pretty easy but I keep running into issues with my nvarchar columns that have an index. My users table has an index defined on the username column for obvious reasons but each time I start the project subsonic is doing this: ALTER TABLE [Users] ALTER COLUMN Username nvarchar(50); which causes this: The index 'IX_Username' is dependent on column 'Username'.ALTER TABLE ALTER COLUMN Username failed because one or more objects access this column Is there any way around this issue?

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  • How does WCF RIA Services handle authentication/authorization/security?

    - by Edward Tanguay
    Since no one answered this question: What issues to consider when rolling your own data-backend for Silverlight / AJAX on non-ASP.NET server? Let me ask it another way: How does WCF RIA Services handle authentication/authorization/security at a low level? e.g. how does the application on the server determine that the incoming http request to change data is coming from a valid client and not from non-desirable source, e.g. a denial-of-service bot?

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  • Using MySQL on Visual Studio 2008

    - by Diego
    I am using the ODBC connector to access a MySQL db from visual studio 2008 and i am facing performance problems when dealing with crystal reports and to solve this i need a native connector to visual studio. if someone has had a similar problem and knows a solution or tools ( freeware preferable ) , i would be really grateful.

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  • What should be the ideal number of parallel java threads for copying a large set of files from a qua

    - by ukgenie
    What should be the ideal number of parallel java threads for copying a large set of files from a quad core linux box to an external shared folder? I can see that with a single thread it is taking a hell lot of time to move the files one by one. Multiple threads is improving the copy performance, but I don't know what should be the exact number of threads. I am using Java executor service to create the thread pool.

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  • Integrate with Hawk Monitoring System

    - by Joel Martinez
    Hello, I am looking to integrate an existing product with Hawk (http://www.hawkms.com/), which our application support team uses to keep an eye on operations. I've never used the product so I was wondering if anyone could point me to some resources about how to expose performance data so that it can be monitored with Hawk. Specifically, the technologies we're using is asp.net and wcf ... but resources on other technology stacks would still be useful if they are available. Thanks!

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  • Minimalist, Tiny Javascript Template System?

    - by Parand
    I'm looking for a minimalist template system for javascript, ala John Resig's Javascript Micro Templating. The smaller the better, and if it's jquery based even better. Recommendations? I tried John's micro-templating but ran into a few issues, wanted to see if there are more baked / better packaged solutions out there. [Update] I tried Resig's Micro Templating again and it's working well for me. Would still like to hear about other alternatives if there are any.

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  • Best Practice for Utilities Class?

    - by Sonny Boy
    Hey all, We currently have a utilities class that handles a lot of string formatting, date displays, and similar functionality and it's a shared/static class. Is this the "correct" way of doing things or should we be instanciating the utility class as and when we need it? Our main goal here is to reduce memory footprint but performance of the application is also a consideration. Thanks, Matt PS. We're using .NET 2.0

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  • What is the holdup on PHP 6?

    - by Billy ONeal
    I've read in multiple places, including highly recommended PHP books published several years ago, that PHP 6 was just over the horizon, and would fix several of the BIG outstanding issues with PHP (namely unicode support). However, its been several years even since I've read those books, and PHP 6 is still not considered kosher for production use. Is there a specific feature that is proving difficult to implement or is it a simple lack of community desire to develop PHP 6?

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  • In what situations the Flash SWF misbehaves in different browsers.

    - by coderex
    Hi, Recently i had some issues with the swf application in IE, which is somethings like gallery. In Firefox its loads perfectly, but in IE it doesn't work properly in some times. For the first time loading its works fine but, when i refresh all the images are getting blank. Image data came from xml. But wish to get some tips regarding the browsers and swf behavior in each. Thanks in advance.

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  • Changing the working directory for a process remotely

    - by Michael
    I've got an application that has a bug right now, but we're unable to update the end-user to get the fix out. What a possible workaround would be is to change the working directory to the application's install directory, but from what I can tell, there's no way to do that outside of the program itself. Is there some sort of Windows API call that can change other processes' working directories, or is that not available due to security issues? I figure it's not possible.

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  • Are GUIDs the ultimate ID?

    - by mafutrct
    I noticed some people don't bother having the usual incremented number as ID but instead simply generate a GUID. The advantages include: Quick and easy No need to keep track of previous IDs Guaranteed to be unique even across machines without knowledge of each other Some disadvantages are: Possibly performance bottleneck Uses a large number of bytes My understanding is that using a GUID is beneficial in most cases, except if optimization for time or space is an issue. Did I miss something? Or do you agree with this idea?

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  • Delphi Component Serialization

    - by Peter
    Has anyone run into issues serializing components into a file and reading them back, specifically in the area where the component vendor upgrades the VCL components. For example a file serialized with DelphiX and then years later read back with delphiY. Do the serialization formats change and if so what can be done to prevent errors reading in the componets when upgrading.

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  • Sending part of byte array over the network using WCF

    - by nikola
    I have a byte array of some binary data that i need to send over the network using WCF and NetTcpBinding. My problem is that i need to send only the part of the array. Is there any way to do this, other than copying that part to a separate array, and sending that one. This extra copying degrades performance, and i would like to avoid it, if possible.

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  • Adding a GridViewRowCollection to the asp.net GridView

    - by CoffeeCode
    i have a record of a gridviewrowcollection. and i'm having issues with adding them to the grid. GridViewRowCollection dr = new GridViewRowCollection(list); StatisticsGrid.DataSource = dr; doesnt work. StatisticsGrid.Rows does have an add method, what is strange how can i add a gridviewrowcollection without creating a datatable + binding it to the datasource?? thanks in advance

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