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  • Partitioning a table in mysql after creation

    - by erik
    I have a table with a bunch of data already in it. I know how to create a partitioned table or alter an already existing partitioned table, but can I add partitions to a table after it has been created, has data in it, without losing the data? The other option is to dump all the data, recreate the table with the partitions and then insert it all back it. Is that the only way? Thanks.

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  • ASP.Net Typed Datasets life span

    - by JBeckton
    What happens to a dataset when your done using it. For example if I create and fill a dataset for a grid, when the user leaves that page or logs out I assume the dataset is still in memory? Does each user get their own instance of the dataset? In other words, if 2 users hit the same page that uses a grid are they each served their own instance of the dataset from server memory?

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  • Intents? How to register to be alerted for incoming emails?

    - by Justin
    Extreme Android developer newbie here...well, new to Android development, not development in general. I want to write an application that gets notified when emails come into the device, and takes various actions based on data in the email (subject, sender, to, etc). I think what I have to do is create a BroadcastReceiver with an IntentFilter. The problem I'm having is figuring out what Intent(s) I need to "listen" for. Can anyone point me in the right direction? Thanks.

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  • Getting ORACLE programming object definitions

    - by Yaakov Davis
    Let's say I have an ORACLE schema with contains a package. That package defines types, functions, procedures, etc: CREATE PACKAGE... DECLARE FUNCTION ... PROCEDURE ... END; Is there a query I can execute to get the definitions of those individual objects, without the wrapping package?

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  • How to lock file in Windows?

    - by matsoor
    How to lock file in Windows so that this file can be opened/read/wrote only by one process? I found out that file can be locked with CreateFile by giving 0 to dwShareMode flag. It works but only the returned handle can be used to work with file. But I want to be able to lock the file to other processes and at the same time to create multiple handles in my process. Please help me to solve this issue or give some tips...

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  • Restrict update Column

    - by Kushan Hasithe Fernando
    Is it possible to restrict updating a column in SQL without using a trigger ? If so how ? (need the query) PS: I mean, I have a table CREATE TABLE MYBUDGET.tbl_Income ( [IncomeID] INT NOT NULL IDENTITY(1,1), [IncomeCatID] INT NOT NULL, [IncomeAmnt] MONEY NOT NULL, [IncomeCurrencyID] INT NOT NULL, [ExchangeRateID] INT NOT NULL, [IncomeAmnt_LKR] MONEY NOT NULL, [AddedOn] DATETIME NOT NULL, [Remark] VARCHAR(250), ) I need to allow users to update only [ExchangeRateID] and [IncomeAmnt_LKR] fields. All other fields can not be updated. only insert.

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  • Is there a programming language with be semantics close to English ?

    - by ivo s
    Most languages allow to 'tweek' to certain extend parts of the syntax (C++,C#) and/or semantics that you will be using in your code (Katahdin, lua). But I have not heard of a language that can just completely define how your code will look like. So isn't there some language which already exists that has such capabilities to override all syntax & define semantics ? Example of what I want to do is basically from the C# code below: foreach(Fruit fruit in Fruits) { if(fruit is Apple) { fruit.Price = fruit.Price/2; } } I want do be able to to write the above code in my perfect language like this: Check if any fruits are Macintosh apples and discount the price by 50%. The advantages that come to my mind looking from a coder's perspective in this "imaginary" language are: It's very clear what is going on (self descriptive) - it's plain English after all even kid would understand my program Hides all complexities which I have to write in C#. But why should I care to learn that if statements, arithmetic operators etc since there are already implemented The disadvantages that I see for a coder who will maintain this program are: Maybe you would express this program differently from me so you may not get all the information that I've expressed in my sentence Programs can be quite verbose and hard to debug but if possible to even proximate this type of syntax above maybe more people would start programming right? That would be amazing I think. I can go to work and just write an essay to draw a square on a winform like this: Create a form called MyGreetingForm. Draw a square with in the middle of MyGreetingFormwith a side of 100 points. In the middle of the square write "Hello! Click here to continue" in Arial font. In the above code the parser must basically guess that I want to use the unnamed square from the previous sentence, it'd be hard to write such a smart parser I guess, yet it's so simple what I want to do. If the user clicks on square in the middle of MyGreetingForm show MyMainForm. In the above code 'basically' the compiler must: 1)generate an event handler 2) check if there is any square in the middle of the form and if there is - 3) hide the form and show another form It looks very hard to do but it doesn't look impossible IMO to me at least approximate this (I can personally generate a parser to perform the 3 steps above np & it's basically the same that it has to do any way when you add even in c# a.MyEvent=+handler; so I don't see a problem here) so I'm thinking maybe somebody already did something like this ? Or is there some practical burden of complexity to create such a 'essay style' programming language which I can't see ? I mean what's the worse that can happen if the parser is not that good? - your program will crash so you have to re-word it:)

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  • Table for each region in MySQL

    - by King Wu
    There are four regions with more than one million records total. Should I create a table with a region column or a table for each region and combine them to get the top ranks? If I combine all four regions, none of my columns will be unique so I will need to also add an id column for my primary key. Otherwise, name, accountId & characterId would be candidate keys or should I just add an id column anyways. Table: ---------------------------------------------------------------- | name | accountId | iconId | level | characterId | updateDate | ----------------------------------------------------------------

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  • PHP - Pass POST variables with header()?

    - by Dan
    Hi, I'm trying to use the header() function to create a redirect. I would like to display an error message. Currently I'm sending the message as a parameter through the URL, however this makes it look quite ugly. Is there a way to pass this value as a post variable instead? Any advice appreciated. Thanks.

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  • complex arguments for function

    - by myPost1
    My task is to create function funCall taking four arguments : pointer for 2d array of ints that stores pairs of numbers variable int maintaining number of numbers in 2d array pointer for table of pointers to functions int variable storing info about number of pointers to functions I was thinking about something like this : typedef int(*funPtr)(int, int); funPtr arrayOfFuncPtrs[]; void funCall( *int[][]k, int a, *funPtr z, int b); { }

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  • How to work on windows 8.1 universal app with javascript

    - by user3706169
    I've worked on windows 8 app with javascript platform in MSVS Express 2012. But I want to work on windows 8 universal, that is why I've installed the MSVS Express 2013. When I create a new project there I got three different Modules (Windows, Windows.phone and Windows.shared) so I could not get the way to start from. Should I write the code within those three modules? Can you guys let me know how to start the windows app universal project?

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  • XMLReader : how to catch syntax errors in the xml file ?

    - by mishal153
    Hi, I have an XML file with syntax errors. eg. <Viewport thisisbad Left="0" Top="0" Width="1280" Height="720" > When i create an XML reader it does not throw any errors. I there a way to do syntax checking automatically, like XMLDocument does ? I have tried setting various XmlReaderSettings flags but found nothing useful.

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  • ASP.NET MVC Route based on Web Browser/Device (e.g. iPhone)

    - by Alex
    Is it possible, from within ASP.NET MVC, to route to different controllers or actions based on the accessing device/browser? I'm thinking of setting up alternative actions and views for some parts of my website in case it is accessed from the iPhone, to optimize display and functionality of it. I don't want to create a completely separate project for the iPhone though as the majority of the site is fine on any device. Any idea on how to do this?

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  • Is there a network diagram standard for illustrating web services?

    - by Phil.Wheeler
    I'm putting together a Solution Architecture document for an enhancement we're adding to our site and it occurs to me that I've never formally illustrated a web service call before. Is there a convention for how web service calls are illustrated on your garden-variety network diagram? Can anyone point me to examples or share something on Create.ly (or similar service)?

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  • Confusing Javascript class declaration

    - by clutch
    I have some third-party Javascript that has statements like this: FOO = function() { ...functions() ... return { hash } }(); It is working as designed but I'm confused by it. Can anybody define what this structure is doing? Is it just a weird way to create a class?

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  • Call Dispose() on a WindowsIdentity object? C#

    - by Andy
    I am retrieving a WindowsIdentity object by calling: win_id = System.Security.Principal.WindowsIdentity.GetCurrent(); with the intention of getting the currently logged on user name, which works fine. WindowsIdentity implements IDisposable, but since I din't create the object myself, do I still need to call .Dispose() on it when I am finished with it or not? Thanks.

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  • wpf: bind to a style property on main window from UserControl

    - by Sonic Soul
    I have a UserControl which has a style, that i would like to be influenced by a settings checkbox on the main window hosting my user control so myControl.xaml has a Style which i would like to have a trigger, that should observe a CheckBox inside MainWindow.xaml i know one way to do this, would be to create a local property in myControl.cs which would look at the property in MainWindow.cs which would in turn return state of that cheeckbox.. but maybe there is a way to do this w/out writing any c# code ?

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