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  • ERRNO: 2 Division by zero error

    - by chupinette
    I am getting this error : ERRNO: 2 TEXT: Division by zero I have the following function in my class Customer public static function GetQuotationDetails($string) { $sql = 'SELECT I.name, I.discounted_price, I.other_name FROM item I WHERE ( I.name LIKE CONCAT( '%', :string, '%' )) AND T.item_name=:string'; $parameters = array(':string' => $string); DB::GetAll($sql,$parameters); } Then, $this->results = Customer::GetQuotationDetails('grinder'); and i echo the results by echo $obj_quotations->results; Can anyone help me?

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  • How to check if a DateTime range is within another 3 month DateTime range

    - by Jamie
    Hi I have a Start Date and End Date per record in a db. I need to check to see where the time period falls in a 2 year period broken into two lots of quarters then display what quarters each record falls into. Quarter 1 includes June 09, Jul 09, Aug 09 Quarter 2 includes Sept 09, Oct 09, Nov 09 Quarter 3 includes Dec 09, Jan 10, Feb 10 Quarter 4 includes Mar 10, Apr 10, May 10 Quaretr 5 includes Jun 10, Jul 10... e.g. 01/10/09 - 01/06/10 would fall into quarters 2, 3, 4 & 5 I am very new to .NET so any examples would be much appreciated.

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  • Hibernate and stored procedures

    - by cc96ai
    As my understanding on setting hibernate, I need to create table meta data file (person.hbm.xml), include all the fields mapping java object (person.java) If we use stored procedures for all transaction, do we still need the above configuration? It seems hibernate and stored procedures will overlap, We set up the stored procedure because we don't want the to developer know all the field in db. If tables change, then we need update above files. Does it mean if we purely use stored procedure, we should just go for JDBC? If hibernate, we should stay in HQL?

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  • ASP.NET error when trying to configure ListView + SqlDatasource for a MySql Table

    - by stighy
    Hi, i'm using ASP.NET + a MySql Db. I'm trying to configure a ListView so i've written: <asp:SqlDataSource ID="dsDatiUtente" runat="server" ConnectionString="Server=12.28.136.29;Database=mydb;Uid=m111d1;Pwd=fake;Pooling=false;" ProviderName="MySql.Data.MySqlClient" SelectCommand="SELECT * FROM user WHERE idUser=@IdUser" / At the beginning of my aspx page i've added <%@ Import Namespace="MySql.Data.MySqlClient" %> But if i click to the sqldatasource and click "Refresh Schema" i got this error: "Unable to retrive schema.... Unable to find the requested .Net Framework data provider" For instance, i've installed it , but i've also uninstalled old version, then installed new versions. In my project i simple copy Mysql dll into "bin" folder, then add a reference to that dll. I'm not sure is the corrected way... I need to have the "refreshed schema" to permit vs.net to build automatically my listview ... if i can't to "auto build" listview, i have to write all code by hand, and it is a too expensive work me :( What i'm wrong ? Thank you!

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  • How to make linq master detail query for 0..n relationship?

    - by JK
    Given a classic DB structure of Orders has zero or more OrderLines and OrderLine has exactly one Product, how do I write a linq query to express this? The output would be OrderNumber - OrderLine - Product Name Order-1 null null // (this order has no lines) Order-2 1 Red widget I tried this query but is not getting the orders with no lines var model = (from po in Orders from line in po.OrderLines select new { OrderNumber = po.Id, OrderLine = line.LineNumber, ProductName = line.Product.ProductDescription, } ) I think that the 2nd from is limiting the query to only those that have OrderLines, but I dont know another way to express it. LINQ is very non-obvious if you ask me!

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  • Essential skills of a Data Scientist

    - by harshsinghal
    I would like to know more about the relevant skills in the arsenal of a Data Scientist, and with new technologies coming in every day, how one picks and chooses the essentials. A few ideas germane to this discussion: Knowing SQL and the use of a DB such as MySQL, PostgreSQL was great till the advent of NoSql and non-relational databases. MongoDB, CouchDB etc. are becoming popular to work with web-scale data. Knowing a stats tool like R is enough for analysis, but to create applications one may need to add Java, Python, and such others to the list. Data now comes in the form of text, urls, multi-media to name a few, and there are different paradigms associated with their manipulation. What about cluster computing, parallel computing, the cloud, Amazon EC2, Hadoop ? OLS Regression now has Artificial Neural Networks, Random Forests and other relatively exotic machine learning/data mining algos. for company Thoughts?

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  • Quick MySQLi security question

    - by Benjamin Falk
    I have a quick MySQLi security related question... For example, take a look at this code (gets in put from the user, checks it against the database to see if the username/password combination exist): $input['user'] = htmlentities($_POST['username'], ENT_QUOTES); $input['pass'] = htmlentities($_POST['password'], ENT_QUOTES); // query db if ($stmt = $mysqli->prepare("SELECT * FROM members WHERE username=? AND password = ?")) { $stmt->bind_param("ss", $input['user'], md5($input['pass'] . $config['salt'])); $stmt->execute(); $stmt->store_result(); // check if there is a match in the database for the user/password combination if ($stmt->num_rows > 0) {} } In this case, I am using htmlentities() on the form data, and using a MySQLi prepared statement. Do I still need to be using mysql_real_escape_string()?

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  • set current user in asp.net mvc

    - by Tomh
    Hey guys, I'm not sure if this is the best way to do it, but I want to keep a user object alive during all requests of the current user. From reading several resources I learned that you should create your own IPrinciple which holds this. But I don't want to trigger the database every authentication request. Any recommendations on how to handle this? Is caching the db request a good idea? protected void Application_AuthenticateRequest(Object sender, EventArgs e) { HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName]; if (authCookie != null) { FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value); User user; using (HgDataContext hg = new HgDataContext()) { if (Session["user"] != null) { user = (from u in hg.Users where u.EmailAddress == authTicket.Name select u).Single(); } else { user = Session["user"] as User; } } var principal = new HgPrincipal(user); Context.User = principal; } }

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  • Hibernate generate POJOs with Equals

    - by jschoen
    We are using hibernate in a new project where we use the hibernate.reveng.xml to create our *.hbm.xml files and POJOs after that. We want to have equals methods in each of our POJOs. I found that you can use <meta attribute="use-in-equals">true</meta> in your hbm files to mark which properties to use in the equals. But this would mean editing alot of files, and then re-editing the files again in the future if/when we modify tables or columns in our DB. So I was wondering if there is a way to place which properties to use in the equals method for each pojo(table) in the hibernate.reveng.xml file?

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  • Converting from SQL Server 2000 to 2005 for ASP.NET web App

    - by Bazza Formez
    Hi there, I'm moving my ASP.NET website to a new provider. Only problem is, old host support my SQL Server 2000 db. New host only supports SQL Server 2005. How should I go about the conversion ? Can I simply produce a backup of the 2000 (.bak) file at the old host, and restore that file into SQL Server 2005 at the new host ? Or is there more to it ?? Note that I don't own a copy of SQL Server 2005 at home... and I'm trying to avoid having to do so. Thanks, Bazza

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  • django setup with Apache, mod_wsgi and cx_Oracle

    - by pablo
    Hi, I need to setup the same django project on several identical servers. Details: - os - free edition of oracle enterprise linux 5 - Apache / mod_wsgi - python - custom python2.6 installation - oracle db with cx_Oracle What is the simplest way to set it up? Would you recommend creating a system user for the django project and use daemon mode? What type of user and what privileges does it need? Can I set ORACLE_HOME, LD_LIBRARY_PATH, PATH=$ORACLE_HOME/bin:$PATH for this user? Would you use a virtualenv for cx_Oracle? Can I somehow put the python2.6 inside the virtualenv so it will portable to other servers? Thanks

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  • Update panel in Tab Container

    - by Sam_Cogan
    I have a tab container with 5 tabs, each tab contains an update panel. When the user initially opens the form, they can only see the first Tab, the others are set to visible=false. Once they have completed the first form, the hit save which sends a partial postback to save the data to the DB. Once that is saved, I then want to set all the other tabs to visible, however this does not work at the moment, I am assuming because the tab container is not contained in an update panel. How can I get this to work, do I need to put the tab container in it's own update panel, which will obviously then contain all the other update panels, or should I not use an update panel in the first tab and do a full page postback?

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  • SQL ConnectionString in web.config and global.asax implications

    - by rlb.usa
    This is going to sound very odd, but I have a web.config like this: <connectionStrings> <remove name="LocalSqlServer"/> <add name="LocalSqlServer" connectionString="Data Source=BACKUPDB;..." providerName="System.Data.SqlClient"/> </connectionStrings> And a global.asax like this: void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started if (Application["con"] == null || Application["con"] == "") { Application["con"] = "Data Source=PRODUCTIONDB;..."; } } And EVERYWHERE in my code, I reference my ConnectionStrings like this: SqlConnection con = new SqlConnection(Convert.ToString(HttpContext.Current.Application["con"])); However, I see that everything I do inside this application goes to BACKUP db instead of PRODUCTIONDB. What is going on, how could this happen, and why? It doesn't make any sense to me, and it got me into a lot of trouble. We use LocalSqlServer string for FormsAuthentication.

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  • Hibernate sequence should only generate when ID is <=0

    - by Tim Leys
    Hi all, I'm using the folowing sequence in my code. (I got the sequence and @Id @SequenceGenerator(name = "S912_PRO_SEQ", sequenceName = "S912_PRO_SEQ", allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "S912_PRO_SEQ") @Column(name = "PRO_ID", unique = true, nullable = false, precision = 9, scale = 0) public int getId() { return this.id; } And using the following sequence / triggers in my DB. CREATE SEQUENCE S912_PRO_SEQ nomaxvalue minvalue 20; CREATE OR REPLACE TRIGGER S912_PRO_B_I_TRG BEFORE INSERT ON S912_project REFERENCING OLD AS OLD NEW AS NEW FOR EACH ROW ENABLE begin IF :NEW.pro_ID IS NULL THEN select S912_PRO_SEQ.nextval into :new.pro_ID from dual; END IF; end; I was wondering if there is a way to let hibernate generate a sequence ONLY if the ID is <=0 (not set) or if the ID already exists. I know for most cases my trigger would fix the situation. But I do not want to rely completely on it. I hope someone can help me out :p

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  • How can I concatinate a subquery result field into the parent query?

    - by Pure.Krome
    Hi folks, DB: Sql Server 2008. I have a really (fake) groovy query like this:- SELECT CarId, NumberPlate (SELECT Owner FROM Owners b WHERE b.CarId = a.CarId) AS Owners FROM Cars a ORDER BY NumberPlate And this is what I'm trying to get... => 1 ABC123 John, Jill, Jane => 2 XYZ123 Fred => 3 SOHOT Jon Skeet, ScottGu So, i tried using AS [Text()] ... FOR XML PATH('') but that was inlcuding weird encoded characters (eg. carriage return). ... so i'm not 100% happy with that. I also tried to see if there's a COALESCE solution, but all my attempts failed. So - any suggestions?

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  • Best way to encrypt certain fiels in SQL Server 2008?

    - by Josh
    I'm writing a .net web app that will read and write information to a SQL 2008 backend database. Some of this information will be highly confidential in nature so I want to encrypt certain data elements. I dont want to use TDE or any full-database encryption for performance reasons. My main concern is protecting this sensitive data as a last resort against a SQL injection or even a database server compromise. My question is what is the best way to do this to preserve performance? Is it faster to use the SQL2008 encryption functions such as EncryptByKey, or would it be faster to encrypt and decrypt the data in the .NET web app itself using a symmetric key stored in the secure web.config and store the encrypted values in the DB?

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  • Why would it be a bad idea to have database connection open between client requests?

    - by AspOnMyNet
    1) Book I’m reading argues that connections shouldn’t be opened between client requests, since they are a finite resource. I realize that max pool size can quickly be reached and thus any further attempts to open a connection will be queued until connection becomes available and for that reason it would be imperative that we release connection as soon as possible. But assuming all request will open connection to the same DB, then I’m not sure how having a connection open between two client requests would be any less efficient than having each request first acquiring a connection from connection pool and later returning that object to connection pool? 2) Book also recommends that when database code is encapsulated in a dedicated data access class, then method M opening a database connection should also close that connection. a) I assume one reason why M should also close it, is because if method M opening the connection doesn’t also close it, but instead this connection object is used inside several methods, then it’s more likely that a programmer will forget to close it. b) Are there any other reasons why a method opening the connection should also close it? thanx

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  • SQL Server: export data via SQL query?

    - by rlb.usa
    I have FK and PK all over my db and table data needs to be specified in a certain order or else I get FK/PK insertion errors. I'm tired of executing the wizard again and again to transfer data one table at a time. In the SQL Server export data wizard there is an option to "Write a query to specify the data to transfer". I'd like to write the query myself and specify the correct order. Will this solve my problem? How do I do this? Can you provide a sample query (or link to one) The databases are on two different servers - SQL Server 2008 on each ; The database names & permissions are the same ; each table name & col is the same ; I need Identity Insert for each table.

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  • How to change Arrow Keys Behavior?

    - by SO give me back my rep
    Hi, I am doing a cool menu (sorta XMB) to give a fresh touch to my app... I add all of the elements on the menu programatically via DB. the menu is designed for easy use with arrows keys but I have encountered a major problem!!! by default when I press the arrow keys they only change the focus based on the tabindex and what I need is to change focus based on position of the controls not on their tabindex hope it is clear... see pic!!! so, Is there any way to do this?

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  • Anyone have any issues with using PLINQO and ASP.NET MVC 2.0?

    - by Chad
    I'm asking because I'm working on an ASP.NET MVC 1.0 site, thinking of upgrading to ASP.NET MVC 2.0. Then I read that PLINQO 5.0 was released (I had never heard of PLINQO before) and have been impressed with what PLINQO appears to be capable of. 1) Is PLINQO capable of building out an ASP.NET MVC 2.0 UI project when it's run? 2) Have you had any bad experiences using PLINQO (particularly in an ASP.NET MVC app)? Let me make sure I have the scenario right in my mind: Using PLINQO (assuming it supports ASP.NET MVC 2.0), I should be able to point it to my DB and it will create 3 projects: data, test, and mvc 2.0 UI? The data would contain LINQ to SQL queries, with the PLINQO extensions added in and the other projects setup to use the data project by default?

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  • How can I turn a bunch of rows into aggregated columns WITHOUT using pivot in SQL Server 2005?

    - by cdeszaq
    Here is the scenario: I have a table that records the user_id, the module_id, and the date/time the module was viewed. eg. Table: Log ------------------------------ User_ID Module_ID Date ------------------------------ 1 red 2001-01-01 1 green 2001-01-02 1 blue 2001-01-03 2 green 2001-01-04 2 blue 2001-01-05 1 red 2001-01-06 1 blue 2001-01-07 3 blue 2001-01-08 3 green 2001-01-09 3 red 2001-01-10 3 green 2001-01-11 4 white 2001-01-12 I need to get a result set that has the user_id as the 1st column, and then a column for each module. The row data is then the user_id and the count of the number of times that user viewed each module. eg. --------------------------------- User_ID red green blue white --------------------------------- 1 2 1 2 0 2 0 1 1 0 3 1 2 1 0 4 0 0 0 1 I was initially thinking that I could do this with PIVOT, but no dice; the database is a converted SQL Server 2000 DB that is running in SQL Server 2005. I'm not able to change the compatibility level, so pivot is out. How can I accomplish this?

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  • Rails: restful authentication setup help

    - by SuperString
    Hi I downloaded the plugin from http://github.com/techweenie/restful-authentication.git Then I run rails generate plugin authenticated user session This is the result I got: create vendor/plugins/authenticated create vendor/plugins/authenticated/MIT-LICENSE create vendor/plugins/authenticated/README create vendor/plugins/authenticated/Rakefile create vendor/plugins/authenticated/init.rb create vendor/plugins/authenticated/install.rb create vendor/plugins/authenticated/uninstall.rb create vendor/plugins/authenticated/lib create vendor/plugins/authenticated/lib/authenticated.rb invoke test_unit inside vendor/plugins/authenticated create test create test/authenticated_test.rb create test/test_helper.rb Then I tried to do rake db:migrate But I got error that says rake tasks in restful-authentication/tasks/auth.rake are deprecated. Use lib/tasks instead. I am new to rails, tried looking online but things seem to be outdated. Please help!

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  • "The provider is not compatible with the version of Oracle client"

    - by psyb0rg
    I just put my asp .net web service on a remote host. The service accesses an oracle db on my local machine. The service worked fine when it was running on localhost but since moving to a remote hos, I get The provider is not compatible with the version of Oracle client at Oracle.DataAccess.Client.OracleInit.Initialize() at Oracle.DataAccess.Client.OracleConnection..cctor() --- End of inner exception stack trace --- at Oracle.DataAccess.Client.OracleConnection..ctor(String connectionString) at.... I know the error is related to the data provider version running on the server/client. In my case, the only dll I referenced in the project was Oracle.DataAccess So how do I go about solving this? Note that I won't be able to change anything on the web host other than my own project. My local machine is running Oracle 11g Thanks.

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  • Workflow 4.0 code activities calling other activites (persist, delay etc)

    - by Lygpt
    I have a bunch of Workflow foundation 4.0 RC code activities that consume web services and talk to databases that I want to add some error handling in. I would really like to be able to attempt to call my web service / db, catch any faults such as a communication failure and then retry the same operation in 1 hours time (after I have logged the exception). Is there a way of doing something like this? protected override void Execute(CodeActivityContext context) { Persist(); // I would like to invoke the persist activity like this if (!AttemptServiceCall()) { // I would like to invoke a delay activity like this Delay(new TimeSpan(0, 30, 0)); // wait 30 mins before trying again Execute(context); // call this activity again } } private bool AttemptServiceCall() { bool serviceCallSuccessful = true; try { myService.InvokeSomeMethod(); } catch (CommunicationException ex) { myEventLogger.Log(ex); serviceCallSuccessful = false; } return serviceCallSuccessful; }

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  • Need a creative machine name suggestions for dev machine.

    - by Jay
    So.. I have a windows machine running a dev-db server (oracle) , svn server (visual svn) and a project management tool (redmine). I need suggestions for a good host name for this machine, which is very easy-to-remember and sounds creative. Would love to hear from your experiences, for inspiration :) Here is what is on my mind right now: (xyz being the project name) < xyz >forge < xyz >labs Need more on these lines. Thanks for all your help.

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