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  • RegEx for MetaMap in Java

    - by Christian
    MetaMap files have following lines: mappings([map(-1000,[ev(-1000,'C0018017','Objective','Goals',[objective],[inpr],[[[1,1],[1,1],0]],yes,no)])]). The format is explained as mappings( [map(negated overall score for this mapping, [ev(negated candidate score,'UMLS concept ID','UMLS concept','preferred name for concept - may or may not be different', [matched word or words lowercased that this candidate matches in the phrase - comma separated list], [semantic type(s) - comma separated list], [match map list - see below],candidate involved with head of phrase - yes or no, is this an overmatch - yes or no ) ] ) ] ). I want to run a RegEx query in java that gives me the Strings 'UMLS concept ID', semantic type and match map list. Is RegEx the right tool or what is the most efficent way to accomplish this in Java?

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  • Wpf ListViewItem Background binding to enum

    - by Christian
    Hi Guys I´ve got a ListView which is bound to the ObservableCollection mPersonList. The Class Person got an enum Sex. What i want to do is to set the background of the ListViewItem to green if the person is male and to red if the person is female. Thanks for the answers!

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  • Small web-framework like Sinatra, Ramaze etc in .NET

    - by Christian W
    Are there any similar frameworks like Sinatra, Ramaze etc in .NET? I'm in theory after a framework that let's me create an entire webapp with just one classfile (conceptually) like Sinatra. I'm going to use it for something work-internal, where ASP.NET MVC is too "big" (and I get confused by it's usage) and I have WebForms up to my ears right now (doing a big webforms based project, currently hating it ;) ) Any suggestions? Oh, and I need to be able to host it in IIS. I would go for IronRuby with Sinatra, but I can't find a step-by-step tut for setting it up in IIS ;)

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  • WPF DataTemplates with VS2010 designer support + reusable - would you do it that way?

    - by Christian
    Ok, I am currently tidying up all my old stuff. I ran into the issue of "code only DataTemplates" - which are really a pain in the ass. You can't see anything, they are really hard to design, and I want to improve my project. So I had the idea to use the following solution. The main benefits are: You have designer support for your data template You can easily include example sample data The file naming is consistent and easy to remember The preview does not require an additional XAML wrapper (even with code only controls) I will try to explain and illustrate my solution using a few pictures. I am interested in feedback, especially if you can imagine a better way to do it. And, of course, if you see any maintenance or performance issues. Ok, lets start with a simple PreviewObject. I want to have some data in it, so I create a subclass which will automatically fill in some dummy data. Then I add a list to the control, and name this list. Afterwards I add a DataTemplate, this is the sole reason for the whole control (to be able to see and edit the DataTemplate in place): Now I use this control to get my DataTemplate, to use it in other places. To make this easier, I added some code in the code behind, see here: Now I want a control to show me a list of PreviewItems, so I created a "code-only" control which creates an instance of my service (or gets one using DI in real world) and fills its list box with it: To view the result of this work, I added this control inside the same named XAML, this is basically only to be able to see the final result: What I do not like in this solution: The need to create the last control in "code only". So I tried something different while writing this post. The following two screenshots illustrate the approach. I am creating an instance of the service inside the DataContext, and I am using bindings to supply the Itemssourc and the ItemTemplate. The reason for the strange "static property" is refactoring support. If I hardcode the path in the designer (e.g. using "Path = PreviewHistory") and I refactor the names (which happens quite often, early design phase) - I screw up my controls without realizing it. Does anyone has a better idea for this? I am using Resharper, btw. Thanks for any input, and sorry for the image overkill. Just easier to explain that way.. Chris

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  • Time series in R

    - by Christian Stade-Schuldt
    Hi, I am tracking my body weight in a spread sheet but I want to improve the experience by using R. I was trying to find some information about time series analysis in R but I was not succesful. The data I have here is in the following format: date - weight - body-fat-percentage - water-percentage e.g. 10/08/09 - 84.30 - 18.20 - 55.3 What I want to do plot weight and exponential moving average against time How can I achieve that?

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  • Storing entity in XML, using MVVM to read/write in WPF Application

    - by Christian
    Say I've a class (model) called Instance with Properties DatbaseHostname, AccessManagerHostname, DatabaseUsername and DatabasePassword public class Instance { private string _DatabaseHostname; public string DatabaseHostname { get { return _DatabaseHostname; } set { _DatabaseHostname = value; } } private string _AccessManagerHostname; public string AccessManagerHostname { get { return _AccessManagerHostname; } set { _AccessManagerHostname = value; } } private string _DatabaseUsername; public string DatabaseUsername { get { return _DatabaseUsername; } set { _DatabaseUsername = value; } } private string _DatabasePassword; public string DatabasePassword { get { return _DatabasePassword; } set { _DatabasePassword = value; } } } I'm looking for a sample code to read/write this Model to XML (preferably linq2XML) = storing 1:n instances in XML. i can manage the the view and ViewModel part myself, although it would be nice if someone had a sample of that part too..

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  • SQL Stored Queries - use result of query as boolean based on existence of records

    - by Christian Mann
    Just getting into SQL stored queries right now... anyway, here's my database schema (simplified for YOUR convenience): member ------ id INT PK board ------ id INT PK officer ------ id INT PK If you're into OOP, Officer Inherits Board Inherits Member. In other words, if someone is listed on the officer table, s/he is listed on the board table and the member table. I want to find out the highest privilege level someone has. So far my SP looks like this: DELIMITER // CREATE PROCEDURE GetAuthLevel(IN targetID MEDIUMINT) BEGIN IF SELECT `id` FROM `member` WHERE `id` = targetID; THEN IF SELECT `id` FROM `board` WHERE `id` = targetID; THEN IF SELECT `id` FROM `officer` WHERE `id` = targetID; THEN RETURN 3; /*officer*/ ELSE RETURN 2; /*board member*/ ELSE RETURN 1; /*general member*/ ELSE RETURN 0; /*not a member*/ END // DELIMITER ; The exact text of the error is #1064 - 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 'SELECT id FROM member WHERE id = targetID; THEN IF SEL' at line 4 I suspect the issue is in the arguments for the IF blocks. What I want to do is return true if the result-set is at least one -- i.e. the id was found in the table. Do any of you guys see anything to do here, or should I reconsider my database design into this:? person ------ id INT PK level SMALLINT

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  • [Glade] button problem

    - by Christian
    Hi, i'm using glade to designa a interface for my program written in C but i have some problem with the buttons. Can someone explain me how to set in glade an action for a button? i mean, i wrote a function in my code but i don't know how to associate it to the graphic... i set i the Signal box the GtkButton activate and i chose "on_button_activate" and in "user data" i put the name of my function but when i copile it this is the terminal answare: chris@chris-laptop:~/Scrivania$ ./provaGrafica (provaGrafica:3139): Gtk-WARNING **: Could not lookup object funzione_esporta on signal activate of object button4 (provaGrafica:3139): Gtk-WARNING **: Could not find signal handler 'on_button4_activate' chris@chris-laptop:~/Scrivania$ and obviusly the button do not work thanks

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  • Unicode replacement characters for text matching

    - by Christian Harms
    I have some fun with unicode text sources (all correct encodet) and I want to match names. The classic problem, one source comes correctly, an other has more flatten names: "Elblag" vs. "Elblag" (see the character a) How can I "flatten" a, á, â or à to a for better matching? Are there unicode to ascii- matching tables?

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  • WebPage resize on HD Devices like Nexus One

    - by christian Muller
    Hi, our Webpage: http://www.checkdent.com/mobile/sv.php?id=12332181087788749 looks fine on Android G1, but comes resized on the Google Nexus (higher resolution) Half part of the Page is outside of the View! I implemented as mentioned at several places the: target-densityDpi=device-dpi < meta content="minimum-scale=1.0, width=device-width, , target- densityDpi=device-dpi, maximum-scale=0.6667, user-scalable=no" name="viewport" / it works great within the 'android browser' but in my Webview Application it still resize!! What can i Do? Regards Chris

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  • Reporting on data when data is missing (ie. how to report zero activities for a customer on a given

    - by Christian Vik
    I want to create a report which aggregates the number of activities per customer per week. If there has been no activites on that customer for a given week, 0 should be displayed (i.e week 3 and 4 in the sample below) CUSTOMER | #ACTIVITIES | WEEKNUMBER A | 4 | 1 A | 2 | 2 A | 0 | 3 A | 0 | 4 A | 1 | 5 B ... C ... The problem is that if there are no activities there is no data to report on and therefor week 3 and 4 in the sample below is not in the report. What is the "best" way to solve this?

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  • MySQL GROUP BY and JOIN

    - by christian
    Guys what's wrong with this SQL query: $sql = "SELECT res.Age, res.Gender, answer.*, $get_sum, SUM(CASE WHEN res.Gender='Male' THEN 1 else 0 END) AS males, SUM(CASE WHEN res.Gender='Female' THEN 1 else 0 END) AS females FROM Respondents AS res INNER JOIN Answers as answer ON answer.RespondentID=res.RespondentID INNER JOIN Questions as question ON answer.Answer=question.id WHERE answer.Question='Q1' GROUP BY res.Age ORDER BY res.Age ASC"; the $get_sum is an array of sql statement derived from another table: $sum[]= "SUM(CASE WHEN answer.Answer=".$db->f("id")." THEN 1 else 0 END) AS item".$db->f("id"); $get_sum = implode(', ', $sum); the query above return these values: Age: 20 item1 0 item2 1 item3 1 item4 1 item5 0 item6 0 Subtotal for Age 20 3 Age: 24 item1 2 item2 2 item3 2 item4 2 item5 1 item6 0 Subtotal for Age 24 9 It should return: Subtotal for Age 20 1 Subtotal for Age 24 2 In my sample data there are 3 respondents 2 are 24 yrs of age and the other one is 20 years old.

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  • Accessing children with a given name via jdom

    - by Christian
    I want to access the children with skos:Concept. getChildren("skos:Concept") and getChildren("Concept") both give me an empty list what should I use instead?. My example Data: <owl:AnnotationProperty rdf:about="&dc;identifier"/> <owl:ObjectProperty rdf:about="&skos;narrower"/> <skos:Concept rdf:about="#concept:0_acetylpantolactone:4253501"> <skos:prefLabel xml:lang="" >0-acetylpantolactone</skos:prefLabel> <skos:hiddenLabel xml:lang="" >2(3H)-Furanone, 3-(acetyloxy)dihydro-4,4-dimethyl-, (R)-</skos:hiddenLabel> <dc:identifier rdf:resource="urn:CHID:028227363"/> <dc:identifier rdf:resource="urn:MESH:C014305"/> </skos:Concept> <skos:Concept rdf:about="#concept:1012S:4202655"> <skos:prefLabel xml:lang="">1012S</skos:prefLabel> <skos:hiddenLabel xml:lang="" >C19-H16-Cl2-N6-O</skos:hiddenLabel> <skos:hiddenLabel xml:lang="">Compound 1012S</skos:hiddenLabel> <dc:identifier rdf:resource="urn:CAS:95211_91_9"/> <dc:identifier rdf:resource="urn:CHID:095211919"/> </skos:Concept>

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  • Save matrix of double values in OpenCV

    - by Christian
    I have an OpenCV matrix of double (CV_32F) values. I'd like to save it to the disk. I know, I could convert it to an 1-Channel 8-bit IplImage and save it. But that way, I loose precision. Is there a way to save it directly in the 32-bit format, without having to convert it first? It also would be nice, if the resulting file would have an image format, so I can view the result as an image.

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  • C# - How to override GetHashCode with Lists in object

    - by Christian
    Hi, I am trying to create a "KeySet" to modify UIElement behaviour. The idea is to create a special function if, eg. the user clicks on an element while holding a. Or ctrl+a. My approach so far, first lets create a container for all possible modifiers. If I would simply allow a single key, it would be no problem. I could use a simple Dictionary, with Dictionary<Keys, Action> _specialActionList If the dictionary is empty, use the default action. If there are entries, check what action to use depending on current pressed keys And if I wasn't greedy, that would be it... Now of course, I want more. I want to allow multiple keys or modifiers. So I created a wrapper class, wich can be used as Key to my dictionary. There is an obvious problem when using a more complex class. Currently two different instances would create two different key, and thereby he would never find my function (see code to understand, really obvious) Now I checked this post: http://stackoverflow.com/questions/638761/c-gethashcode-override-of-object-containing-generic-array which helped a little. But my question is, is my basic design for the class ok. Should I use a hashset to store the modifier and normal keyboardkeys (instead of Lists). And If so, how would the GetHashCode function look like? I know, its a lot of code to write (boring hash functions), some tips would be sufficient to get me started. Will post tryouts here... And here comes the code so far, the Test obviously fails... public class KeyModifierSet { private readonly List<Key> _keys = new List<Key>(); private readonly List<ModifierKeys> _modifierKeys = new List<ModifierKeys>(); private static readonly Dictionary<KeyModifierSet, Action> _testDict = new Dictionary<KeyModifierSet, Action>(); public static void Test() { _testDict.Add(new KeyModifierSet(Key.A), () => Debug.WriteLine("nothing")); if (!_testDict.ContainsKey(new KeyModifierSet(Key.A))) throw new Exception("Not done yet, help :-)"); } public KeyModifierSet(IEnumerable<Key> keys, IEnumerable<ModifierKeys> modifierKeys) { foreach (var key in keys) _keys.Add(key); foreach (var key in modifierKeys) _modifierKeys.Add(key); } public KeyModifierSet(Key key, ModifierKeys modifierKey) { _keys.Add(key); _modifierKeys.Add(modifierKey); } public KeyModifierSet(Key key) { _keys.Add(key); } }

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  • Strange error with VS2008 on Windows 7

    - by Christian
    We have a solution with two projects, one of them is a Silverlight 3 application which is embedded on the other ASP.NET MVC project. Just recently an error started to appear which makes the build fail. Here is the output: `------ Build started: Project: DotCoquiMap, Configuration: Debug Any CPU ------ C:\Program Files\MSBuild\Microsoft\Silverlight\v3.0\Microsoft.Ria.Client.targets : warning : Could not find necessary input file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll'. Done building project "DotCoquiMap.csproj" -- FAILED. ------ Build started: Project: DotCoquiProject, Configuration: Debug Any CPU ------ C:\Windows\Microsoft.NET\Framework\v3.5\Csc.exe /noconfig /nowarn:1701,1702 /errorreport:prompt /warn:4 /define:DEBUG;TRACE /reference:C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll /reference:..\ExternalLibraries\itextsharp.dll /reference:..\ExternalLibraries\MvcMembership.dll /reference:..\ExternalLibraries\PagedList.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Configuration.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.DataSetExtensions.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.Linq.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Drawing.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.EnterpriseServices.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Abstractions.dll" /reference:............\Windows\assembly\GAC_MSIL\System.Web.DataVisualization\3.5.0.0__31bf3856ad364e35\System.Web.DataVisualization.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Extensions.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.Mobile.dll /reference:"C:\Program Files\Microsoft ASP.NET\ASP.NET MVC 1.0\Assemblies\System.Web.Mvc.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Routing.dll" /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Web.Services.dll /reference:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Xml.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Xml.Linq.dll" /debug+ /debug:full /optimize- /out:obj\Debug\DotCoquiProject.dll /target:library Controllers\AccountController.cs Controllers\AdministrationController.cs Controllers\ApiController.cs Controllers\CampaignsCategoriesController.cs Controllers\CampaignsController.cs Controllers\CampaignsFormViewModel.cs Controllers\CampaignStatisticsController.cs Controllers\CampaignStatisticsDetailsViewModel.cs Controllers\ControllerHelpers.cs Controllers\CountriesController.cs Controllers\ErrorController.cs Controllers\HomeController.cs Controllers\MapController.cs Controllers\MediaController.cs Controllers\MediaViewModel.cs Controllers\NewsController.cs Controllers\OrganizationsController.cs Controllers\OrgCenterController.cs Controllers\UserAdministrationController.cs Default.aspx.cs Global.asax.cs Models\Campaigns.cs Models\CategoriesRuleValidation.cs Models\DotCoquiDBModel.designer.cs Models\DotCoquiRepository.cs Models\DQcodes.cs Models\FileRepository.cs Models\ISmtpClient.cs Models\JsonModels.cs Models\OrgCenter\IndexViewModel.cs Models\SmtpClientProxy.cs Models\Statistic.cs Models\User.cs Models\UserAdministration\DetailsViewModel.cs Models\UserAdministration\IndexViewModel.cs Models\UserAdministration\RoleViewModel.cs Properties\AssemblyInfo.cs error CS0006: Metadata file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll' could not be found Compile complete -- 1 errors, 0 warnings ========== Build: 0 succeeded or up-to-date, 2 failed, 0 skipped ==========` And here is the errors / warnings: Warning 2 Could not find necessary input file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll'. DotCoquiMap Error 1 Metadata file 'C:\Users\Michael\Documents\DotCoqui\trunk\DotCoquiMap\Bin\Debug\DotCoquiMap.dll' could not be found DotCoquiProject The DotCoquiMap is not getting built therefore the DotCoquiProject (ASP.NET MVC) cannot find the .dll. Now here is the really odd thing, under Windows XP the very same code compiles and runs perfectly.... under windows 7 it gives us these errors. It is the very same code, we have tested it on 3 different Win7 machines to no avail. Help will be really really helpful. Thanks in advance.

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  • Why does IE8 change flash callback function into object?

    - by Christian Hollbaum
    Hi Guys I have put 2 swf's (using swfobject 2) on the same website; One for playing a movie, and one for controlling the movie (I want to position them seperately, so they can't be in the same swf). I'm doing the communication between the two using javascript with jQuery, and externalcallback functions in both swf's. Everything is running smoothly on all browsers, but IE8. In IE8 I can only call the pause callback function in the control swf once. When it has been called it will not run properly the next time. After trying to debug what is happening live, using javascript's "type of" I have found that IE8 changes the callback function on the flash object from a function into an object when it has been triggered. Can anyone explain why this is happening? .. and maybe suggest how to avoid this? .. or change the object back to a function?

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  • Sending solicited mass email

    - by Christian W
    Our company does work environment surveys, and these surveys are filled in online. All participants are sent a link to their survey in an email (personal code included). Some of our clients have employee counts in the hundreds and sometimes in the thousands. Our current solution is just using our SMTP-server to send this, without any form of throttling (VB6, CDO). (All recipients are usually "inside" the same domain, [email protected]) This is not a good solution, as you may imagine, this triggers every anti-spam/firewall/gatekeeper event in the clients environment. We are put in contact with their IT-department beforehand and get them to whitelist our sending server and sender-mail address. The most usual problems we run in to are: Receiving server only grabs the 20-50 first mails and rejects the rest (anti-spam measure). We sometimes can get by this by getting the it-company to whitelist us. Sometimes however, this does not work. It's getting more and more normal to disable bouncing of incorrect mail addresses. This gives us no indication of whether a mail has been delivered or not. And believe it or not, most clients gives us their email list from their HR-system, not their mailsystem. Does anyone have any suggestions for a better way to do this? We can't be the only company sending legitimate mass emails? :)

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  • Unity Register two interfaces as one singleton

    - by Christian
    Hi all, how do I register two different interfaces in Unity with the same instance... Currently I am using _container.RegisterType<EventService, EventService>(new ContainerControlledLifetimeManager()); _container.RegisterInstance<IEventService>(_container.Resolve<EventService>()); _container.RegisterInstance<IEventServiceInformation>(_container.Resolve<EventService>()); which works, but does not look nice.. So, I think you get the idea. EventService implements two interfaces, I want a reference to the same object if I resolve the interfaces. Chris

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  • CSV string handling

    - by Christian Hagelid
    Typical way of creating a CSV string (pseudocode): create a CSV container object (like a StringBuilder in C#) Loop through the strings you want to add appending a comma after each one After the loop, remove that last superfluous comma. Code sample: public string ReturnAsCSV(ContactList contactList) { StringBuilder sb = new StringBuilder(); foreach (Contact c in contactList) { sb.Append(c.Name + ","); } sb.Remove(sb.Length - 1, 1); //sb.Replace(",", "", sb.Length - 1, 1) return sb.ToString(); } I feel that there should be an easier / cleaner / more efficient way of removing that last comma. Any ideas? Update I like the idea of adding the comma by checking if the container is empty, but doesn't that mean more processing as it needs to check the length of the string on each occurrence?

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  • Multidimensional Array with different types in java

    - by Christian
    I want to store a data structure thats a table with one column Strings and another column of Ints. List<Entry<String, Integer>> li = new LinkedList<Entry<String, Integer>>(); would do the job for a list but I would rather have the performance of an array. I tried Entry<String, Integer>[] = new Entry<String, Integer>[10]; but that doesn't seem to work.

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  • Calculations in a table of data

    - by Christian W
    I have a table of data with survey results, and I want to do certain calculations on this data. The datastructure is somewhat like this: ____________________________________________________________________________________ | group |individual | key | key | key | | | |subkey|subkey|subkey|subkey|subkey|subkey|subkey|subkey|subkey| | | |q|q|q |q |q |q|q|q |q|q|q |q |q |q|q|q |q|q|q |q |q |q|q|q | |-------|-----------|-|-|--|--|---|-|-|--|-|-|--|--|---|-|-|--|-|-|--|--|---|-|-|--| | 1 | 0001 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 1 | 0002 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 1 | 0003 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 2 | 0004 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 2 | 0005 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 3 | 0006 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 4 | 0007 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | ------------------------------------------------------------------------------------ Excuse my poor ascii skills... So, every individual belongs to a group, and has answered some questions. These questions are always grouped in keys and subkeys. Is there any simple method to calculate averages, deviations and similar based on the groupings. Something like public float getAverage(int key, int individual); float avg = getAverage(5,7); I think what I'm asking is what would be the best way to structure the data in C# to make it as easy as possible to work with? I have started making classes for every entity, but I got confused somewhere and something stopped working. So before I continue along this path, I was wondering if there are any other, better, ways of doing this? (Every individual can also have describing variables, like agegroup and such, but that's not important for the base functionality.) Our current solution does all calculations inline in the queries when requesting the data from the database. This works, but it's slow and the number of queries equals questions * individuals + keys * individuals, which could be alot if individual queries. Any suggestions?

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  • MySQL index building performance

    - by Christian
    I tried to build an index over a two columns of a 30,000,000 entry database. I canceled the process after ~60hr as it didn't seem to work. For some reason MySQL takes only 22 mb ram instead of using the RAM fully. Is index building an operation that needs no Ram or is there some way to tell MySQL to use more RAM to be faster?

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