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• SQL Select -> product -> comments -> user

  - by user1492716

  thanks for yout time helping on this ;) I'm new to SQL and wish to solve somethign in just one query and i dont know how to do it.- Basically I've a table of products, a table of users and a table of comments, linked by products.id - comments.pid and user.id - comments.uid , i wish to know what is the best practice to create just 1 query and get all products with child comments, including username.

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• How to convert an integer to a string in GLib?

  - by Ashwin

  I want to convert an integer value to string in GLib. Is there any macro or function to da that? Or Can i store different data types in the same doubly linked list?

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• Java overloading and overriding

  - by Padmanabh

  We always say that method overloading is static polymorphism and overriding is runtime polymorphism. What exactly do we mean by static here? Is the call to a method resolved on compiling the code? So whats the difference between normal method call and calling a final method? Which one is linked at compile time?

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• How to hook a function for a particular shared ELF library?

  - by iUm

  LD_PRELOAD hooks some functions for the entire process, but I need to hook a particular function for only one dynamically linked library by its name.

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• Hibernate OneToOne - how to set null value?

  - by EugeneP

  If I want to save a linked instance as null in a database, what should I do? I cannot simply pass null to obj.setOneToOneAssociatedObject(null) Still, I want to save this link as null (table allows it).

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• How to do a back-reference on Google AppEngine?

  - by jCuga

  I'm trying to access an object that is linked to by a db.ReferenceProperty in Google app engine. Here's the model's code: class InquiryQuestion(db.Model): inquiry_ref = db.ReferenceProperty(reference_class=GiftInquiry, required=True, collection_name="inquiry_ref") And I am trying to access it in the following way: linkedObject = question.inquiry_ref and then linkedKey = linkedObject.key but it's not working. Can anyone please help?

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• Struts formbean problem

  - by xain

  Hi, I have a struts app with a jsp with the code: ... ... <input name="inrofol" class="inputfilter" id="inrofol" size="22" maxlength="20" type="text"> ... And even though it's not linked to the associated form bean, I get the exception Error 500: No getter method for property: "inrofol" of bean: "com.test.forms.CompForm" Any hints ? Thanks

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• Get Row of DataGrid in User Control Page

  - by Romil

  My Question is related to access the rows in one page and putting conditions in another page. I need to check whether a datagrid has row in it or not. DataGrid is in .aspx page. Based on this checking i need to write a condition in .ascx page. the .ascx on which condition is checked is linked to .aspx page. Meaning that UserControl1.ascx is Register with Default.aspx page I am using VS 2003 Please advice Thanks

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• Linking database column to dropdown control in ASP.Net

  - by kunal

  I am using c# with asp.net and SQL Server 2005 as backend. I want to use dropdown list control in a form to populate a textbox. The dropdown control is linked to a column in the database. How can I code this in c#?

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• Why call-by-value evaluation strategy is not Turing complete?

  - by Roman

  I'm reading an article about different evaluation strategies (I linked article in wiki, but I'm reading another one not in English). And it says that unlike to call-by-name and call-by-need strategies, call-by-value strategy is not Turing complete. Can anybody explain, please, why is it so? If it's possible, add an example pls.

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• How to show a module in Joomla when it's not a Menu item

  - by HollerTrain

  I am trying to show a module, but the article I want to show the module on is not linked to a menu item. Is this possible? Seems like a module can only show when it is a menu item. But I have a ton of articles that are not menu items - so what is easiest way to show the module? Any help would be greatly appreciated.

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• The least amount of code possible for this MySQL query?

  - by ddan

  I have a MySQL query that: gets data from three tables linked by unique id's. counts the number of games played in each category, from each user and counts the number of games each user has played that fall under the "fps" category It seems to me that this code could be a lot smaller. How would I go about making this query smaller. http://sqlfiddle.com/#!2/6d211/1 Any help is appreciated even if you just give me links to check out.

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• Database Formatting for Album Tracks

  - by Sev

  I would like to store album's track names in a single field in a database. The number of tracks are arbitrary for each album. Each album is one record in the table. Each track must be linked to a specific URL which also should be stored in the database somewhere. Is it possible to do this by storing them in a single field, or is a relational table for the track names/urls the only way to go?

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• InnoDB - Two foreign keys on the same column from one table

  - by makeflo

  Hey Guys, i have a project table which has a image_id field and a newsimage_id field. Both are linked to the image table. But InnoDB doesn't allow me to set a foreign key for both fields to the same column (id). Is there a way I can do this or is it not possible? I'm using MySQL through MAMP. Thanks in advance!!

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• MySQL select/where statement

  - by expo101

  I have a webapplication linked to a mysql database with the following fields: field 1:trip_id field 2:trip_destination field 3:trip_description field 4:trip_duration In the webapplication I have a listbox based on the following: ListBox value =1: trip duration 1 - 5 days ListBox value =2: trip duration 6 - 10 days Listbox value =3: trip duration 11 -20 days ListBox value =4: trip duration over 20 days How do I put this in the sql select statement?

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• confusing java data structures

  - by London

  Maybe the title is not appropriate but I couldn't think of any other at this moment. My question is what is the difference between LinkedList and ArrayList or HashMap and THashMap . Is there a tree structure already for Java(ex:AVL,Black-white) or balanced or not balanced(linked list). If this kind of question is not appropriate for SO please let me know I will delete it. thank you

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• Need a MYSQL query to compare two tables and only output non matching results

  - by ee12csvt

  I have two tables in my database, one contains a list of items with other information on these items. The other table is contains a list of photographs of these items. The items table gives each item a unique identifier,which is used in the photographs table to identifier which item has been photographed. I need to output a list of items that are not linked to a photograph in the second table. Any ideas on how I can do this?

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• mysql select from one server insert to another mysql server ?

  - by Shvilam

  I wont to do insert to one mysqll server to and get the data or do the select part of the insert into select from anther mysql server not just copy entire tables is this possible in my sql I know that in MS Sql server you can do a linked server thanks

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• Is flash's geturl(...) spiderable by google?

  - by tom

  If I made a homepage with an embedded .swf which had buttons that linked to other html pages on my website using the getUrl() function, would those links be spiderable by google? Or should I also put in text links outside of the .swf (which would ruin the design a bit)? I know a lot of people will argue I shouldn't have flash as the main content on the homepage (and their comments are appreciated), but bear in mind, that's not my question.

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• How to retrieve from two tables with same foreign key repeated more than once?

  - by Sarenya

  How to display the data of tables that are linked by a primary key and foreign key where the foreign key of the data repeats? For ex. I have two tables, ParentTable and Childtable. The primary key of ParentTable acts as the foreign key of ChildTable. There are more than one record with same ParentId in ChildTable. How to retrieve them and display in a single Grid or List or any type of view?

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• All possible types of interview questions

  - by halivingston

  A lot of tech interviews asks these "kinds" of questions, so I thought I'd make a list for myself and others: (1) Linked Lists (2) Strings (3) Trees (4) Bitwise Manips (6) Recursion (I hate these ones, I can never get these, any tips?)

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• i am using c# with asp.net and sql 2005 as backend, i want to use dropdown list cntrl in a form and

  - by kunal

  i am using c# with asp.net and sql 2005 as backend, i want to use dropdown list cntrl in a form and fetch a column in a textbox which is linked to that dropdown cntrl in the database, what coding should i use in c# for that?

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• Are there possible approaches to map signal handling (c library) into a c++ exception?

  - by pcent

  I have a c++ application linked against some c libraries. Are there possible approaches to encapsulate the signal handling in a C++ class, so it could be handled as a c++ exception?

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• UML scenario example

  - by James P.

  How are scenarios expressed? I think they're linked to use-cases but I'm not sure and I'm seeking some good examples or a document that can serve as a template.

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• Why Pointers in C++?

  - by viswanathan

  Why do we actually need pointers in C++. Why can we just live with Arrays? Or is it really powerful in the case of data structures like linked lists and binary trees.

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