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  • SQLite subquery syntax/error/difference from MySQL

    - by Rudie
    I was under the impression this is valid SQLite syntax: SELECT *, (SELECT amount AS target FROM target_money WHERE start_year <= p.bill_year AND start_month <= p.bill_month ORDER BY start_year ASC, start_month ASC LIMIT 1) AS target FROM payments AS p; But I guess it's not, because SQLite returns this error: no such column: p.bill_year What's wrong with how I refer to p.bill_year? Yes, I am positive table payments hosts a column bill_year. Am I crazy or is this just valid SQL syntax? It would work in MySQL wouldn't it?? I don't have any other SQL present so I can't test others, but I thought SQLite was quite standardlike.

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  • Will iPhone OS4 make your life easier or harder as a lone app developer?

    - by Matt
    I am interested to hear what people feel about the new iPhone OS4 release. It is obviously very exciting having access to all the new features, apparently (from apple.com) it has over 1500 new APIs. My original thoughts were "Wow, this is awesome", and I suppose it is. I was just getting comfortable with OS 3.2 development though, and now there is a raft of additional stuff to learn in order to keep up with the pack. So I am feeling quite frustrated! Do you think, when working as an individual app developer, having access to these additional features would improve your applications or just water down the quality? I guess being giving the opportunity to improve applications and provide better features should be welcomed. I think frustration comes from struggling to keep up with the continuous changes, but thats the industry we are in I suppose! Any thoughts/comments?

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  • How do I use "this" in a member function?

    - by Peter Stewart
    I've written a member function of class Node to read a tree of Nodes in postfix order. It will be called by the Node instance which is the root node of the tree. So: N.postfix(); these appear to be illeagal: *this->left.postfix(); *this->right.postfix(); What is the proper way to do this? class Node { public: const char *cargo; int depth; Node *left; Node *right void Node::postfix() { if (this==__nullptr) { return; } else { *this->left.postfix(); *this->right.postfix(); out<<*this->cargo<<"\n"; return; } };

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  • Deny http access to a directory, allow access from WordPress plugin

    - by luke
    Hey. I need to prevent direct access to http://www.site.com/wp-content/uploads/folder/something.pdf through the browser. However the Download Monitor plugin I am using, which allows logged in users to download the file, needs to be able to work. Trying Order Allow,Deny Deny from all Allow from all but the download links do not now work... even though (I think) they are links produced by the script e.g. http://www.site.com/wp-content/plugins/download-monitor/download.php?id=something.pdf Enter that in the address bar and you correctly get a WordPress message, 'You must be logged in to download this file.' However, if someone knows the URL where the file was uploaded http://www.site.com/wp-content/uploads/folder/something.pdf they can still access it directly. I don't know how (guesswork?) they would find the direct URL anyway, but the client wants it stopped! Thanks for any help.

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  • How do you use multiple versions of the same R package?

    - by Richie Cotton
    In order to be able to compare two versions of a package, I need to able to choose which version of the package that I load. R's package system is set to by default to overwrite existing packages, so that you always have the latest version. How do I override this behaviour? My thoughts so far are: I could get the package sources, edit the descriptions to give different names and build, in effect, two different packages. I'd rather be able to work directly with the binaries though, as it is much less hassle. I don't necessarily need to have both versions of the packages loaded at the same time (just installed somewhere at the same time). I could perhaps mess about with Sys.getenv('R_HOME') to change the place where R installs the packages, and then .libpaths() to change the place where R looks for them. This seems hacky though, so does anyone have any better ideas?

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  • Deploy java (command line) app using Netbeans / ant

    - by Haes
    I've finally managed to create a Netbeans project out of an old standalone (not Web-) Java application which consisted only out of single .java sources. Now I have basically two questions regarding Netbeans Subversion interaction and application deployment: Do you check in all the Netbeans project files into the repository, normally? If I build the project using Netbeans (or ant) I get a .jar file and some additional jar libraries. In order for the app to run properly on the server, some additional config files and directories (log/ for example) are needed. The application itself is a J2SE application (no frameworks) which runs from the command line on a Linux platform. How would you deploy and install such an application? It would also be nice if I could see what version of app is currently installed (maybe by appending the version number to the installed app path). Thanks for any tips.

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  • Forcing the browser to pop a save as dialog box from a link pointing to remote url

    - by user360788
    Hi, I am building a web app that lets the user directly download files on a cdn by clicking a link. The link should point to the cdn url directly in order to minimize the load on our servers. We would like the to have the browser pop up the save as dialog box when the user clicks the link to download the file and not have the browser display the content of the file at all. So the page should not reload. However, we don't have access to setting the HTTP headers sent back from cdn. Is it possible to still pop up the save as dialog box for download using client-side code?

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  • Can in-memory SQLite databases scale with concurrency?

    - by Kent Boogaart
    In order to prevent a SQLite in-memory database from being cleaned up, one must use the same connection to access the database. However, using the same connection causes SQLite to synchronize access to the database. Thus, if I have many threads performing reads against an in-memory database, it is slower on a multi-core machine than the exact same code running against a file-backed database. Is there any way to get the best of both worlds? That is, an in-memory database that permits multiple, concurrent calls to the database?

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  • Java equivalent for database schema changes like South for Django?

    - by gerdemb
    I've been working on a Django project using South to track and manage database schema changes. I'm starting a new Java project using Google Web Toolkit and wonder if there is an equivalent tool. For those who don't know, here's what South does: Automatically recognize changes to my Python database models (add/delete columns, tables etc.) Automatically create SQL statements to apply those changes to my database Track the applied schema migrations and apply them in order Allow data migrations using Python code. For example, splitting a name field into a first-name and last-name field using the Python split() function I haven't decided on my Java ORM yet, but Hibernate looks like the most popular. For me, the ability to easily make database schema changes will be an important factor.

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  • Long IF tree with strings

    - by DalGr
    I have a C program which uses Lua for scripting. In order to keep readability and avoid importing several constants within the individual Lua states, I condense a large amount of functions within a simple call (such as "ObjectSet(id, "ANGLE", 45)"), by using an "action" string. To do this I have a large if tree comparing the action string to a list (such as "if(stringcompare(action, "ANGLE") ... else if (stringcompare(action, "X")... etc") This approach works well, and within the program it's not really slow, and is fairly quick to add a new action. But I kind of feel perfectionist. Is there a better way to do this in C? And having Lua in heavy use, maybe there is a way to use it for this purpose? (embedded "chunks" making a dictionary?) Although this part is mostly curiosity.

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  • How to rotate an image properly in JPanel (Java)

    - by Bruce
    Hi guys, I'm working on rotating a loaded image. I set the graphics on a JPanel and then use standard AffineTransform in order to rotate it, say, 45 degrees. Unfortunately, the image is being cut, if it exceeds the panel area. How may I force JPanel to add scrolls to itself (while loading an image file, I would like to adjust the size of JPanel by adding the scrolls, without adjusting the size of JFrame). Or, in other words, how to correctly rotate the whole image? Thank you in advance for the reply!

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  • Oauth : Get user's permissions without any redirection to a server.

    - by Anthony
    Hello, in my website, I want to add a "invite friend of my contacts book" functionnality. I would like that the user fills the loggin form in my website. Then the website contacts Google Mail, Yahoo Mail, Live Mail and retrieves the contact list. In the Oauth protocole supported by Google and Yahoo, the user is redirected to a Google or Yahoo page (like Facebook) in order to permit the user to give permissions. But I saw two websites which didn't any redirections to get the contacts book (LinkedIn for a Google mail account and Theauteurs with a live mail.) Do you know how I can get a contacts book without redirect the user to Google, Microsoft or Yahoo website.

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  • python + auto ssh proccess to get date info

    - by david
    I need to perform on my linux 5.3 ssh [Linux machine red hat 5.3] date in order to get the date results , during ssh need to answer on the following question (yes/no)? -- yes password: -- diana_123 and then I will get the date results please advice how to do this automated process with python? ( on my Linux I have Python 2.2.3 ) python script should get the IP address number , and perform automatically ssh to 103.116.140.151 and return the date results as --> Fri Nov 18 11:25:18 IST 2011 example of manual proccess: # ssh 103.116.140.151 date The authenticity of host '103.116.140.151 (103.116.140.151)' can't be established. RSA key fingerprint is ad:7e:df:9b:53:86:9f:98:17:70:2f:58:c2:5b:e2:e7. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '103.116.140.151' (RSA) to the list of known hosts. [email protected]'s password: Fri Nov 18 11:25:18 IST 2011

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  • Overrided ToString doesn't show in debug

    - by marco.ragogna
    I have a collection similar to: Public Class MyCollection Inherits ObservableCollection(Of MyCollection) Private _Name As String Public Property Name() As String Get Return _Name End Get Set(ByVal value As String) _Name = value End Set End Property Public Overrides Function ToString() As String Return "Name: " & _Name End Function End Class I have overrided ToString method in order to help in debug, but it doesn't show up. In the code that follow if, during debug, I move the mouse over coll it shows me Count = 0 Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded Dim coll As New MyCollection coll.Name = "Test" End Sub Do you know what could be the problem?

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  • how can I get back /usr/local/bin/mysql on Snow Leopard?

    - by Ole Media
    From terminal and trying to uninstall macports, I ran a command, rm -rf / macports...., that erased bunch of stuff. I feel ashamed about this, not realizing the space after /. Since then, mysql is running but I cannot execute any of the mysql commands because it is not under /usr/local/bin/ I went ahead an reinstall mysql but without luck. What steps do you recommend on doing in order to be able to run mysql, mysqlduml, mysqladmin, from terminal? I can access databases from phpmyadmin, so mysql is running, don't ask me how.

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  • What kind of good approaches use c++ programmers for storing error messages?

    - by Narek
    Say I have a huge code and have different kinds of error messages. For that I want to have a separate place where I store error codes and error messages. For example, for an error that occured because the program could not open a file I stroe: F001 "Can not open a file." "The same error message in another language" "The same error message in third language" What is the best way of storing different kind of error messages and codes in a file for c++ programmer in order to use that in a programme fast and easily? FYI I am working with Qt lib.

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  • Can EPD Python and MacPorts Python coexist on OS X (matplotlib)?

    - by bjoern
    I've been using MacPorts Python 2.6 on OS X 10.6. I am considering also installing the Enthought Python Distribution (EPD) on the same machine because it comes preconfigured with matplotlib and other nice data analysis and visualization packages. Can the two Python distributions co-exist peacefully on the same machine? What potential problems will I have to look out for (e.g., environment variables)? I know that building matplotlib through MacPorts is an option, but the process is lengthy (on the order of a full day) and there are open questions about compiling some dependencies on 64bit Intel. I would like to know about the tradeoffs before committing to one of the two approaches.

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  • Setting focus on top of the page on click of asp.net link button

    - by user74042
    I've a asp.net datagrid which shows customer order details. Pagination at the bottom of the grid is done using datalist and asp.net Linkbutton controls. Here is the code: <asp:DataList ID="DataList2" runat="server" CellPadding="1" CellSpacing="1" OnItemCommand="DataList2_ItemCommand" OnItemDataBound="DataList2_ItemDataBound" RepeatDirection="Horizontal"> <ItemTemplate> <asp:LinkButton ID="lnkbtnPaging" runat="server" CommandArgument='<%# Eval("PageIndex") %>' CommandName="lnkbtnPaging" Text='<%# Eval("PageText") %>'></asp:LinkButton> <asp:Label runat="server" ID="lblPageSeparator" Text=" | " name=></asp:Label> </ItemTemplate> </asp:DataList> When the user clicks on any page number(ie.Link button), I need to set focus on top of the page. How do i do this? Thanks!

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  • MySQL: Efficient Blobbing?

    - by feklee
    I'm dealing with blobs of up to - I estimate - about 100 kilo bytes in size. The data is compressed already. Storage engine: InnoDB on MySQL 5.1 Frontend: PHP (Symfony with Propel ORM) Some questions: I've read somewhere that it's not good to update blobs, because it leads to reallocation, fragmentation, and thus bad performance. Is that true? Any reference on this? Initially the blobs get constructed by appending data chunks. Each chunk is up to 16 kilo bytes in size. Is it more efficient to use a separate chunk table instead, for example with fields as below? parent_id, position, chunk Then, to get the entire blob, one would do something like: SELECT GROUP_CONCAT(chunk ORDER BY position) FROM chunks WHERE parent_id = 187 The result would be used in a PHP script. Is there any difference between the types of blobs, aside from the size needed for meta data, which should be negligible.

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  • Size SKU in Magento

    - by latvian
    Hi, How can I allow SKU be longer than 34 characters (for simple products) for all products? When i add new product(simple) and enter more than 34 characters, Magento cuts it to 34 after saving. In the database the 'sku' attributes ( for quete item,order item,invoice item, shipment item) from eav_attribute table hold varchar(255). For Catalog_Product_Entity the attributed is VarChar(64). In either case, it is more than 34characters. Thus, I could change SKU to 64 characters without making any change in database, correct? How do i do that? I have good understanding of the user side magento code, but not Admin side. Can you suggest me good tutorial on making changes in Admin side that could help me figure this question myself. Thank you, Margots

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  • Determine if a decimal can be stored as int32

    - by anchandra
    I am doing some custom serializing, and in order to save some space, i want to serialize the decimals as int, if possible value wise. Performance is a concern, since i am dealing with a high volume of data. The current method i use is: if ((value > Int32.MinValue) && (value < Int32.MaxValue) && ((valueAsInt = Decimal.ToInt32(value)) == value)) { return true; } Can this be improved?

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  • Strange sql query result from Mysql and from PHP mysqli_query!

    - by qinHaiXiang
    this is the query command echo from php web page: SELECT DISTINCT FT.file_type_name AS type,FT.file_type_en AS tp,FT.file_type_id AS fti, MATCH(keywords) AGAINST ('words <2' IN BOOLEAN MODE ) AS score FROM movie AS M,file_type AS FT WHERE MATCH (keywords) AGAINST ('words <2' IN BOOLEAN MODE ) AND M.type_cn = FT.file_type_id HAVING score >=1 ORDER BY FT.file_type_order; I am running above query in MySQL tools HeidiSQL and got only tow row records which score are 1.66666 and 2. If I remove the HAVING clause I would got three row records with one's score less than 1. But the same query I get from PHP mysqli_query() were all the three records and the one which score less than 1 became 1. What is the problem. Any tips will be pleasure. Thank you very much!!

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  • script to dynamically fix ophaned users after db restore

    - by JJgates
    After performing a database restore, I want to run a dynamic script to fix ophaned users. My script below loops through all users that are displayed after executing sp_change_users_login 'report' and apply "alter user [username] with login = [username]" to fix SID conflicts verses static go statements. Although, I'm getting an "incorrect syntax error on line 15." can't figure out why... DECLARE @Username varchar(100), @cmd varchar(100) DECLARE userLogin_cursor CURSOR FAST_FORWARD FOR SELECT UserName = name FROM sysusers WHERE issqluser = 1 and (sid IS NOT NULL AND sid <> 0×0) AND suser_sname(sid) IS NULL ORDER BY name FOR READ ONLY OPEN userLogin_cursor FETCH NEXT FROM userLogin_cursor INTO @Username WHILE @@fetch_status = 0 BEGIN SET @cmd = ‘ALTER USER ‘+@username+‘ WITH LOGIN ‘+@username EXECUTE(@cmd) FETCH NEXT FROM userLogin_cursor INTO @Username END CLOSE userLogin_cursor DEALLOCATE userLogin_cursor

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  • Joomla , forms with upload and custom field from inside the administration panel

    - by Stathis
    I want a plugin for joomla like jforms or chronoforms in order to make a form to upload videos along with other custom fields to db and manage them. The only problem is I want this functionality to be made from inside the administrator console and not to appear on a page at my site's frontend. My site does not have a login service , so I need to make the admin able to login to administration panel and from there to upload and manage videos. Do you know of a plugin wich supports this functionality? Thank you in advance.

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  • Qt on Mac: where to find "configure"

    - by Gil
    hi, I am very new to Mac. I downloaded QT SDK Mac Open source (http://get.qt.nokia.com/qtsdk/qt-sdk-mac-opensource-2010.02.dmg) and installed the Package. I can run qmake, build samples and run demos, but I cannot run configure (in order to build the Qt libraries statically). It says: -bash: No such file or directory. Documentation says I should run this in the "Qt root folder", but what is this folder in Mac? I looked for it in /usr/bin, /usr/local/Qt4.6, /Developer/Tools/Qt. Anyway, what is "configure" on Mac. is it an executable or a script? Thanks a lot

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