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  • cx_Oracle and output variables

    - by Tim
    I'm trying to do this again an Oracle 10 database: cursor = connection.cursor() lOutput = cursor.var(cx_Oracle.STRING) cursor.execute(""" BEGIN %(out)s := 'N'; END;""", {'out' : lOutput}) print lOutput.value but I'm getting DatabaseError: ORA-01036: illegal variable name/number Is it possible to define PL/SQL blocks in cx_Oracle this way?

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  • Change MS Access to Exclusive on the fly

    - by Nate
    I have a process in an MS Acess database that the users will usually run once daily, but could be more or less. It takes several minutes and requires temporary exclusive access because it deletes and recreates the main table. I have code to check to see if there are other users in the db before the process starts, but is there a way to change the access to "exclusive" at the beginning, and then change it back to open access at the end? Thanks for any help.

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  • How to change granted role temporarily to achieve "view the site as" someone else

    - by Roy Chan
    Hi Gurus, We are using 2.x spring security right now. I am asked to build an admin tool so that the ROLE_ADMIN can change to any user in the site and view the site as that person (each person on the site may see different stuff depending on the role which is dynamically granted base on the database) and of course the admin should be able to switch back to admin without logging in. Is there a build in function, if not how should I do this? Thanks in advance!

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  • Communicating with remote server in Android

    - by primal
    Hi, As part of the college mini-project, I am developing a micro-blogging platform for Android. I am planning to use Django framework in python to handle the communication between Android and remote server so as to make database API independent. I heard its best practice to use HTTP methods for the communication. Which is the best site/book to learn using HTTP methods for Android? I

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  • Restricting Access in ERB code.

    - by LGFaler
    I am trying to build a CMS using ERB. Is there a way you can give ERB code read-only access to your models? For instance, I want to be able to load any information on my models (Model.all, Model.find_by_slug, Model.find_by_name, Model.other_model.name, etc...), but I don't want to be able to change this data. Can you disable ERB from executing commands that would make database changes (Model.save, Model.update, Model.delete, Model.destroy, etc.)???

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  • How to take first 4 time for each person.

    - by Gopal
    Using Access Database Table ID Time 001 100000 001 100005 001 103000 001 102500 001 110000 001 120000 001 113000 ..., From the above table, i want to take first four time Query like Select id, min(time) from table group by id I want to take first four min(time) for each person Expected Output ID Time 001 100000 001 100005 001 102500 001 103000 002 ..., How to make a query for this condition?

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  • Oracle DB on solaris utilizing swap memory when free RAM available

    - by Ara
    Hi, We have a weird instance where we noticed our oracle database server swap utilization was 100% and surprised to see that the system had free memory available during that period. To my knowledge, swap memory utilization starts once system runs out of free RAM (please correct me if i'm wrong). Not sure what could have caused this unusual activity. Had anyone else experienced such behaviour? Regs,

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  • finding process bottlenecks rails/ruby

    - by Ben
    I just got started with rails, and when I testing in development mode, I see in the logs that my Mailer action is taking 1175ms. Is there anyway to find out what exactly is the slow step? Also, there is a line that says (View:2, DB:1). I assume the DB means number of database lookups, but what about the view?

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  • Can I have a user submit a form and receive a PDF copy?

    - by thatryan
    Not quite sure how to ask this :) But what I need is to have some forms online that people can fill out, like registration form etc. They will then submit it and be emailed it as well as me and have it stored in a database. Is there a way for the files to be PDFs? Can I have an editable PDF form online? Thank you.

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  • MySQL query to order by parent then child places

    - by Swanny
    I have a table of pages in my database, each page can have a parent as below: id parent_id title 1 0 Home 2 0 Sitemap 3 0 Products 4 3 Product 1 5 3 Product 2 6 4 Product 1 Review Page What would be the best MySQL query to select all pages ordered by parent then child then child again if there is more than one level, there will be a maximum of three levels. The above example would produce the desired order: Home Sitemap Products Product 1 Product 1 Review Page Product 2

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  • Is it worth a try LINQ to SQL as a beginner to an ORM?

    - by Pandiya Chendur
    Thus far used sql server stored procedures for all my web applications... Now thought of moving to an ORM... I would like to ask SO users about LINQ to SQL Is Linq to sql worth a try as a beginner to an ORM? or should i look for some others... Any suggestion... EDIT: I have a sql server 2005 database with all tables.... How to use this db with Linq to sql?

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  • Negative Primary Keys

    - by bjax
    Are there any repercussions using Negative Primary Keys for tables (Identity Increment -1, Identity Seed -1 in SQL Server 2005)? The reason for this is we're creating a new database to replace an existing one. There are similar tables between the two databases and we'd like the "source" of the information to be transparent to our applications. The approach is to create views that unions tables from both databases. Negative PKs ensures the identities don't overlap.

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  • AJAX in Rails - doing simple looping to update information when available

    - by Acidburn2k
    I am trying to get put out a simple site, which would pool the database every few seconds and update the information on the page dynamicly, when theres something new inserted. I am farily new to ruby, but I understand the whole concept of RJS, link_to_function and soforth. The question is, what is the best way how to implement some kind of simple loop, which would run after the page is loaded and update the DOM if there is something new to display. Thanks in advance for any tips!

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  • how to Invoke User-Defined Functions That Return a Table Data Type

    - by nectar
    here my code- create function dbo.emptable() returns Table as return (select id, name, salary from employee) go select dbo.emptable() error: Msg 4121, Level 16, State 1, Line 1 Cannot find either column "dbo" or the user-defined function or aggregate "dbo.emptable", or the name is ambiguous. while when I run sp_helptext emptable it shows- create function dbo.emptable() returns Table as return (select id, name, salary from employee) it means function exists in database then why it is giving such error?

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  • need an empty string, but getting an exception in ruby on rails

    - by Jon
    controller @articles = current_user.articles view <% @articles.each do |article| %> <%= link_to "#{article.title} , #{article.author.name}" articles_path%> <% end %> Sometimes the article has no author, so is null in the database, which results in the following error You have a nil object when you didn't expect it! The error occurred while evaluating nil.name I still want to output the article title in this scenario, whats the best way to do this please?

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  • What is the most elegant way to implement a business rule relating to a child collection in LINQ?

    - by AaronSieb
    I have two tables in my database: Wiki WikiId ... WikiUser WikiUserId (PK) WikiId UserId IsOwner ... These tables have a one (Wiki) to Many (WikiUser) relationship. How would I implement the following business rule in my LINQ entity classes: "A Wiki must have exactly one owner?" I've tried updating the tables as follows: Wiki WikiId (PK) OwnerId (FK to WikiUser) ... WikiUser WikiUserId (PK) WikiId UserId ... This enforces the constraint, but if I remove the owner's WikiUser record from the Wiki's WikiUser collection, I recieve an ugly SqlException. This seems like it would be difficult to catch and handle in the UI. Is there a way to perform this check before the SqlException is generated? A better way to structure my database? A way to catch and translate the SqlException to something more useful? Edit: I would prefer to keep the validation rules within the LINQ entity classes if possible. Edit 2: Some more details about my specific situation. In my application, the user should be able to remove users from the Wiki. They should be able to remove any user, except the user who is currently flagged as the "owner" of the Wiki (a Wiki must have exactly one owner at all times). In my control logic, I'd like to use something like this: wiki.WikiUsers.Remove(wikiUser); mRepository.Save(); And have any broken rules transferred to the UI layer. What I DON'T want to have to do is this: if(wikiUser.WikiUserId != wiki.OwnerId) { wiki.WikiUsers.Remove(wikiUser); mRepository.Save(); } else { //Handle errors. } I also don't particularly want to move the code to my repository (because there is nothing to indicate not to use the native Remove functions), so I also DON'T want code like this: mRepository.RemoveWikiUser(wiki, wikiUser) mRepository.Save(); This WOULD be acceptable: try { wiki.WikiUsers.Remove(wikiUser); mRepository.Save(); } catch(ValidationException ve) { //Display ve.Message } But this catches too many errors: try { wiki.WikiUsers.Remove(wikiUser); mRepository.Save(); } catch(SqlException se) { //Display se.Message } I would also PREFER NOT to explicitly call a business rule check (although it may become necessary): wiki.WIkiUsers.Remove(wikiUser); if(wiki.CheckRules()) { mRepository.Save(); } else { //Display broken rules }

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  • Transformation of records 1 column 3 row -> 1 row 3 column

    - by Nehal Rupani
    First look at below query SELECT count(id) as total_record, id, modeller, MONTHNAME(completed_date) as current_month, Quarter(completed_date) as current_quarter, Difficulty, YEAR(completed_date) as current_year FROM model WHERE modeller != '' AND completed_date BETWEEN '2010-04-01' AND '2010-05-31' AND Difficulty != '' Group by Difficulty, Month(completed_date) Order by Month(completed_date) ASC Results I am getting is Modeller Month Year Difficulty ------------------------------------- XYZ Jan 2010 23 XYZ Jan 2010 14 XYZ Jan 2010 15 ABC Feb 2010 5 ABC Feb 2010 14 ABC Feb 2010 6 I want result like Modeller Month Year Difficulty -------------------------------------- XYZ Jan 2010 23, 14, 15 ABC Feb 2010 5, 14, 6 My database is Mysql for application i am developing so any help would be greatly appericated.

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  • Getting $_POST variable from table

    - by Sakamoto Kazuma
    I'm trying to build a sort of resource allocation form. I'd like to be able to print a table from a database, and then allow users to click on each cell that they would like to reserve. Also, being able to drag and select multiple cells. Then send all of this via $_POST to another php script. Problem is, I have no idea where to start. Any suggestions?

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  • functional test for rails controller privaet method

    - by mohit
    I have a private method in my controller. which is used for some database update. this method i am calling from another controller method. and it works fine. But when i am trying to write a test case for that method then It is tripping on accessing (session variable and params) in my functional all other methods are working fine the problem is only with private method? In my setup method in functional test, I am setting session also.?

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