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• Which frontend framework/library should I learn to enhance an existing site? [on hold]

  - by Codemonkey

  I have a large site that I've coded by hand over the last couple of years. It's a sports results service, and allows users to view their results, compare themselves to others, buy photographs, that sort of thing. The code base is fairly substantial, and scarily uses no frameworks or libraries. It's a PHP backend, and a clean & compact frontend. I use the Highcharts library, but other than that all of the JS is my own. I'm not a fan of bulk, even if it is CDN-hosted and heavily cachable. Maybe I need to change my outlook on this? I'm wanting to make some significant changes to the site now, and it seems an appropriate time to enhance my skillset by learning AngularJS, or something else of that ilk. A large part of the site is tables of data, and as just one example of the sort of thing I want to achieve, I'd like to let users add/remove/sort columns better than they currently can. Are any of the various frameworks/libraries out there more suitable to shoehorning into an existing project?

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• How do I develop database-utilizing application in an agile/test-driven-development way?

  - by user39019

  I want to add databases (traditional client/server RDBMS's like Mysql/Postgresql as opposed to NoSQL, or embedded databases) to my toolbox as a developer. I've been using SQLite for simpler projects with only 1 client, but now I want to do more complicated things (ie, db-backed web development). I usually like following agile and/or test-driven-development principles. I generally code in Perl or Python. Questions: How do I test my code such that each run of the test suite starts with a 'pristine' state? Do I run a separate instance of the database server every test? Do I use a temporary database? How do I design my tables/schema so that it is flexible with respect to changing requirements? Do I start with an ORM for my language? Or do I stick to manually coding SQL? One thing I don't find appealing is having to change more than one thing (say, the CREATE TABLE statement and associated crud statements) for one change, b/c that's error prone. On the other hand, I expect ORM's to be a low slower and harder to debug than raw SQL. What is the general strategy for migrating data between one version of the program and a newer one? Do I carefully write ALTER TABLE statements between each version, or do I dump the data and import fresh in the new version?

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• Design practice for securing data inside Azure SQL

  - by Sid

  Update: I'm looking for a specific design practice as we try to build-our-own database encryption. Azure SQL doesn't support many of the encryption features found in SQL Server (Table and Column encryption). We need to store some sensitive information that needs to be encrypted and we've rolled our own using AesCryptoServiceProvider to encrypt/decrypt data to/from the database. This solves the immediate issue (no cleartext in db) but poses other problems like Key rotation (we have to roll our own code for this, walking through the db converting old cipher text into new cipher text) metadata mapping of which tables and which columns are encrypted. This is simple when it's just couple of columns (send an email to all devs/document) but that quickly gets out of hand ... So, what is the best practice for doing application level encryption into a database that doesn't support encryption? In particular, what is a good design to solve the above two bullet points? If you had specific schema additions would love it if you could give details ("Have a NVARCHAR(max) column to store the cipher metadata as JSON" or a SQL script/commands). If someone would like to recommend a library, I'd be happy to stay away from "DIY" too. Before going too deep - I assume there isn't any way I can add encryption support to Azure by creating a stored procedure, right?

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• Use decorator and factory together to extend objects?

  - by TheClue

  I'm new to OOP and design pattern. I've a simple app that handles the generation of Tables, Columns (that belong to Table), Rows (that belong to Column) and Values (that belong to Rows). Each of these object can have a collection of Property, which is in turn defined as an enum. They are all interfaces: I used factories to get concrete instances of these products, depending on circumnstances. Now I'm facing the problem of extending these classes. Let's say I need another product called "SpecialTable" which in turn has some special properties or new methods like 'getSomethingSpecial' or an extended set of Property. The only way is to extend/specialize all my elements (ie. build a SpecialTableFactory, a SpecialTable interface and a SpecialTableImpl concrete)? What to do if, let's say, I plan to use standard methods like addRow(Column column, String name) that doesn't need to be specialized? I don't like the idea to inherit factories and interfaces, but since SpecialTable has more methods than Table i guess it cannot share the same factory. Am I wrong? Another question: if I need to define product properties at run time (a Table that is upgraded to SpecialTable at runtime), i guess i should use a decorator. Is it possible (and how) to combine both factory and decorator design? Is it better to use a State or Strategy pattern, instead?

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• TraceTune: Improved Comment View

  - by Bill Graziano

  I wanted an easier way to identify queries I’d already looked at so I could skip them.  I’ve been entering comments for each query as I review it.  These comments typically fall into three categories: a change I made, no easy fix available or something needs to be changed on the client.  TraceTune now highlights any statement with a comment in bold.  If you hover over the statement you’ll see the most recent comment for that statement. This gives me a quick way to see what’s new and identify those queries that still need work.  This is especially helpful when I come back to a server after weeks or months away.  These comments help jar my memory and remind me what I’ve worked on. I made the font slightly smaller in some of the tables.  It’s still readable but I’m able to get more of a SQL statement on the screen.  I also got to re-experience the pain of Internet Explorer, Chrome and FireFox all displaying text (and pop-up text) slightly different. Seeing the comments on a trace has been a big help to me.  I often do a round of tuning and then don’t come back to a server until months later.  Having the comments available helps me get back up to speed quickly.

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• help with yes/no radio button for multiple questions pull from database

  - by Darlene

  hey guys i need a little help with this questionaire form. The tables currently using are: user userid| username answers aswerid|quesid|ans|userid|date ques quesid|ques The form below is what im using however i'm gettin errors for radio button.... could anyone offer advice? $query = mysql_query("SELECT * FROM ques", $con) or die("Cannot Access tblprequeations From Server"); echo"<div id='quesform' class='quesform'>"; echo"<form name='QForm' method='post' action='answers.php' onsubmit='return validateQForm(this);'>"; echo"<p>"; while($row = mysql_fetch_array($query)) { echo"<p>"; echo"<label>".$row['quesid']."</label>&nbsp; &nbsp;"; echo"<label>".$row['ques']."</label>&nbsp; &nbsp;"; echo"<input type='radio' name='ans' value='yes' if (isset($_POST['ans']) && $_POST['ans'] == 'yes') echo'checked'/>"; echo"<input type='radio' name='ans' value='no' if (isset($_POST['ans']) && $_POST['ans'] == 'no') echo'checked'/>"; echo"</p>"; } echo"</p>";

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• Looking to create website that can have custom GUI and database per user

  - by riley3131

  I have developed an MS Access database for a company to track data in regards to production of a certain commodity. It has many many tables, forms, reports, etc. These were all done as the user requested, and resemble the users previously used system, mostly printed worksheets and excel workbooks. This has created a central location for all information and has allowed the company to compare data in a new way. I am now looking to do this for other companies, but would like to switch it to a web application. Here is my question. What is the best way to create unique solutions for individual companies that can have around 100 users each? I would love to create one site that would serve all parties, but that would ruin the customizable nature of what I am developing. I love the ability to create reports, excel sheets, pdf, graphs, etc with access, but am tired of relying on my customers software, servers, etc. I have some experience with WAMP, but I am far better at VBA. I was okay at PHP, and was getting a grasp on JavaScript a few years back. I am also trying to decide whether to go with WAMP or LAMP, if web is the best choice. Also, should I try set up one site for all users that after log-in goes to company specific pages, or individual sites for each company? Should I host or use a service?

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• My first blog post…

  - by steveh99999

  I’ve been meaning to start a blog for a while now, (OK, for several years…..) - finally now, here it begins First post, something really simple but, a wise-man once told me about the best way to improve SQL server performance. Store Less Data. That's it.. that's all there is to it... Over the years, I've seen the following :- -  a 200Gb database which held 3 days data. Once business requirements changed, we were able to hold only 1 days data in this database. -  a table developed by DBAs to hold application table cardinality information - that information was collected at 2 hour intervals every day for 7 years ! After 7 years the DBA space-info table had become the largest table in the database - 60 million rows !  It was a simple change to remove alot of the historical intra-day data and change the schedule to run only once per evening. Suddenly that table held 6 million rows instead of 60 million.... - lots of backup and restore history held in msdb. See this post by Brent Ozar for more details on this issue. Imagine how much faster the backups, DBCC Checks and reindexes ran when the above 3 changes were implemented ?   How often do you review your big databases \ tables to see if you’re actually holding only data that is really required by the business ?

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• Is this table replicated?

  - by fatherjack

  Another in the potentially quite sporadic series of I need to do ... but I cant find it on the internet. I have a table that I think might be involved in replication but I don't know which publication its in... We know the table name - 'MyTable' We have replication running on our server and its replicating our database, or part of it - 'MyDatabase'. We need to know if the table is replicated and if so which publication is going to need to be reviewed if we make changes to the table. How? USE MyDatabase GO /* Lots of info about our table but not much that's relevant to our current requirements*/ SELECT * FROM sysobjects WHERE NAME = 'MyTable' -- mmmm, getting there /* To quote BOL - "Contains one row for each merge article defined in the local database. This table is stored in the publication database.replication" interesting column is [pubid] */ SELECT * FROM dbo.sysmergearticles AS s WHERE NAME = 'MyTable' -- really close now /* the sysmergepublications table - Contains one row for each merge publication defined in the database. This table is stored in the publication and subscription databases. so this would be where we get the publication details */ SELECT * FROM dbo.sysmergepublications AS s WHERE s.pubid = '2876BBD8-3D4E-4ED8-88F3-581A659E8144' -- DONE IT. /* Combine the two tables above and we get the information we need */ SELECT s.[name] AS [Publication name] FROM dbo.sysmergepublications AS s INNER JOIN dbo.sysmergearticles AS s2 ON s.pubid = s2.pubid WHERE s2.NAME = 'MyTable' So I now know which

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• Is it okay to use a language that isn't supported by your company for some tasks?

  - by systempuntoout

  I work for a company that supports several languages: COBOL, VB6, C# and Java. I use those languages for my primary work, but I often find myself to coding some minor programs (e.g. scripts) in Python because I found it to be the best tool for that type of task. For example: An analyst gives me a complex CSV file to populate some DB tables, so I would use Python to parse it and create a DB script. What's the problem? The main problem I see is that a few parts of these quick & dirty scripts are slowly gaining importance and: My company does not support Python They're not version controlled (I back them up in another way) My coworkers do not know Python The analysts have even started referencing them in email ("launch the script that exports..."), so they are needed more often than I initially thought. I should add that these scripts are just utilities that are not part of the main project; they simply help to get trivial tasks done in less time. For my own small tasks they help a lot. In short, if I were a lottery winner to be in a accident, my coworkers would need to keep the project alive without those scripts; they would spend more time in fixing CSV errors by hand for example. Is this a common scenario? Am I doing something wrong? What should I do?

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• What is a Relational Database Management System (RDBMS)?

  A Relational Database Management System (RDBMS)  can also be called a traditional database that uses a Structured Query Language (SQL) to provide access to stored data while insuring the integrity of the data. The data is stored in a collection of tables that is defined by relationships between data items. In addition, data permitted to be joined in new relationships. Traditional databases primarily process data through transactions called transaction processing. Transaction processing is the methodology of grouping related business operations based predefined business events. An example of this can be seen when a person attempts to purchase an item from an online e-tailor. The business must execute specific operations for a related  business event. In this case, a business must store the following information: Customer Info, Order Info, Order Item Info, Customer Payment Data, Payment Results, and Current Order Status. Example: Pseudo SQL Operations needed for processing an online e-tailor sale. Insert Customer into Customers Insert New Order into Orders Insert Each New Order Item into OrderItems Insert Customer Payment Info into PaymentInfo Insert Payment Processing Result into PaymentDetails Update Customer for Current Order Status Common Relational Database Management System Microsoft SQL Server Microsoft Access Oracle MySQL DB2 It is important to note that no current RDBMS has fully implemented all of the Relational Principles. Common RDBMS Traits Volatile Data Supports Transaction Processing Optimized for Updates and Simple Queries 

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• Take a Tour of the Future

  - by Tom Caldecott-Oracle

  Visit Our HQ Usability Lab During Oracle OpenWorld 2014 You want to look behind the scenes at the Oracle Applications User Experience Usability Lab on the campus of our headquarters. No problem. You’re invited to join an exclusive tour. When? Thursday, October 2 or Friday, October 3. Where? Redwood Shores, Calif.  And what will you see on the tour? The future—how we test future product designs and the advanced technology we use to do that. You’ll also view early demos of upcoming enterprise software designs for tables and mobile phones.  We’ll provide round-trip transportation, with the pickup and drop-off point being the InterContinental San Francisco.  Space is limited, so reserve your spot now. Want to know more about the tour and other Oracle Applications User Experience activities at Oracle OpenWorld? Visit UsableApps. Welcome to the future.

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• Enablement 2.0 Get Specialized!

  - by mseika

  Enablement 2.0 Get Specialized! Oracle PartnerNetwork Specialized program is releasing new certifications on our latest products, and partners are invited to be the first candidates. Primavera Portfolio Management 9 SpecializationNew Specialist Guided Learning Paths Available! · Primavera Portfolio Management 9 Sales Specialist · Primavera Portfolio Management 9 PreSales Specialist · Primavera Portfolio Management 9 Implementation Specialist · Primavera Portfolio Management Support Specialist New Specialist Guided Learning Paths Available! · Primavera Portfolio Management 9 Sales Specialist Assessment · Primavera Portfolio Management 9 PreSales Specialist Assessment · Primavera Portfolio Management Support Specialist New OPN Boot Camp Available! · Primavera Portfolio Management Implementation Boot CampThis boot camp is designed to introduce users to the powerful features of Primavera Portfolio Management in tandem with building and configuring solutions appropriate to client needs to add value and solve business pains associated with portfolio management such as: System Set-up and Configuration; Administration processes; Create and manage categories, value lists, functions, scorecards, portfolios, investor maps, tables, forms, graphs, dashboards and workflows. The principal objective is ensuring attendees are able to design and configure enterprise Portfolio Management solutions.Contact UsPlease direct any inquiries you may have to Oracle Partner Enablement team at [email protected].

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• What is the canonical approach to using a VCS right from a project's infancy?

  - by Anonymous -

  Background I've used VCS (mainly git) in the past to manage many existing projects and it works great. Typically with an existing project, I would check in each change I make to the code that either optimizes or changes the overall functionality (you know what I mean, in suitable steps, not every single line I change). Problem One thing I've not had so much practise at is creating new projects. I'm in the process of starting a new project of my own that will probably grow quite large, but I'm finding that there is a lot to do and a lot changing in the first few days/hours/weeks/the period up until the product is actually functioning in it's most basic form. Is there any point in me checking in each step of the process as I would with an existing project? I'm not breaking the project with changes I make since it isn't working yet. At the moment I've simply been using VCS as a backup at the end of each day, when I leave the computer. My first few commits were things like "Basic directory structure in place" and "DB tables created". How should I use a VCS when starting a new project?

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• Web Applications Desktop Integrator (WebADI) Feature for Install Base Mass Update in 12.1.3

  - by LuciaC

  Purpose The integration of WebADI technology with the Install Base Mass Update function is designed to make creation and update of bulk item instances much easier than in the past. What is it? WebADI is an Excel-based desktop application where users can download an Excel template with item instances pre-populated based on search criteria.  Users can create and update item instances in the Excel sheet and finally upload the Excel data using an "upload" option available in the Excel menu. On upload, the modified data will bulk upload to interface tables which are processed by an asynchronous concurrent program that users can monitor for the uploaded results. Advantage: This allows users to work in a disconnected Environment: session time outs can be avoided, as once a template is downloaded the user can work in a disconnected environment and once all updates are done the new input can be uploaded. Also the data can be saved for later update and upload. For more details review the following: R12.1.3 Install Base WebADI Mass Update Feature (Doc ID 1535936.1) How To Use Install Base WebADI Mass Update Feature In Release 12.1.3 (Doc ID 1536498.1).

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• What's wrong performing unit test against concrete implementation if your frameworks are not going to change?

  - by palm snow

  First a bit of background: We are re-architecting our product suite that was written 10 years ago and served its purpose. One thing that we cannot change is the database schema as we have 500+ client base using this system. Our db schema has over 150+ tables. We have decided on using Entity Framework 4.1 as DAL and still evaluating various frameworks for storing our business logic. I am investigation to bring unit testing into the mix but I also confused as to how far I need to go with setting up a full blown TDD environment. One aspect of setting up unit testing is by getting into implementing Repository, unit of work and mocking frameworks etc. This mean there will be cost and investment on the code-bloat associated with all these frameworks. I understand some of this could be auto-generated but when it comes to things like behaviors, that will be mostly hand written. Just to be clear, I am not questioning the important of unit testing your code. I am just not sure we need all its components (like repository, mocking etc.) when we are fairly certain of storage mechanism/framework (SQL Server/Entity Framework). All that code bloat with generic repositories make sense when you need a generic layers with ability to change this whenever you like however its very likely a YAGNI in our case. What we need is more of integration testing where we can unit-test our code with concrete repository objects and test data in database. In this scenario, just running integration test seem to be more beneficial in our case. Any thoughts if I am missing any thing here?

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• Would this data requirement suit a Document -Oriented database?

  - by codecowboy

  I have a requirement to allow users to fill in journal/diary entries per day. I want to provide a handful of known journal templates with x columns to fill in. An example might be a thought diary; a user has to record a thought in one column, describe the situation, rate how they felt etc. The other requirement is that a user should be able to create their own diary templates. They might have a need for a 10 column diary entry per day and might need to rate some aspect out of 50 instead of 10. In an RDBMS, I can see this getting quite complicated. I could have individual tables for my known templates as the fields will be fixed. But for custom diary templates I imagine I would would need a table storing custom_field_types (the diary columns), a table storing entries referencing their field types (custom_entries) and then a third custom_diary table which would store rows matching custom_entries to diaries. Leaving performance / scaling aside, would it be any simpler or make more sense to use a document oriented database like MongoDB to store this data? This is for a web application which might later need an API for mobile devices.

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• Repository query conditions, dependencies and DRY

  - by vFragosop

  To keep it simple, let's suppose an application which has Accounts and Users. Each account may have any number of users. There's also 3 consumers of UserRepository: An admin interface which may list all users Public front-end which may list all users An account authenticated API which should only list it's own users Assuming UserRepository is something like this: class UsersRepository extends DatabaseAbstraction { private function query() { return $this->database()->select('users.*'); } public function getAll() { return $this->query()->exec(); } // IMPORTANT: // Tons of other methods for searching, filtering, // joining of other tables, ordering and such... } Keeping in mind the comment above, and the necessity to abstract user querying conditions, How should I handle querying of users filtering by account_id? I can picture three possible roads: 1. Should I create an AccountUsersRepository? class AccountUsersRepository extends UserRepository { public function __construct(Account $account) { $this->account = $account; } private function query() { return parent::query() ->where('account_id', '=', $this->account->id); } } This has the advantage of reducing the duplication of UsersRepository methods, but doesn't quite fit into anything I've read about DDD so far (I'm rookie by the way) 2. Should I put it as a method on AccountsRepository? class AccountsRepository extends DatabaseAbstraction { public function getAccountUsers(Account $account) { return $this->database() ->select('users.*') ->where('account_id', '=', $account->id) ->exec(); } } This requires the duplication of all UserRepository methods and may need another UserQuery layer, that implements those querying logic on chainable way. 3. Should I query UserRepository from within my account entity? class Account extends Entity { public function getUsers() { return UserRepository::findByAccountId($this->id); } } This feels more like an aggregate root for me, but introduces dependency of UserRepository on Account entity, which may violate a few principles. 4. Or am I missing the point completely? Maybe there's an even better solution? Footnotes: Besides permissions being a Service concern, in my understanding, they shouldn't implement SQL query but leave that to repositories since those may not even be SQL driven.

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• Is it a good practice to create a list of definitions for all symbols and words in a programming language?

  - by MrDaniel

  After arriving at this point in Learning Python The Hard Way I am wondering if this is a good practice to create a list of symbols and define what they do as noted in bold below, for every programming language. This seems reasonable, and might be very useful to have when jumping between programming languages? Is this something that programmers do or is it just a waste of effort? Exercise 22: What Do You Know So Far? There won't be any code in this exercise or the next one, so there's no WYSS or Extra Credit either. In fact, this exercise is like one giant Extra Credit. I'm going to have you do a form of review what you have learned so far. First, go back through every exercise you have done so far and write down every word and symbol (another name for 'character') that you have used. Make sure your list of symbols is complete. Next to each word or symbol, write its name and what it does. If you can't find a name for a symbol in this book, then look for it online. If you do not know what a word or symbol does, then go read about it again and try using it in some code. You may run into a few things you just can't find out or know, so just keep those on the list and be ready to look them up when you find them. Once you have your list, spend a few days rewriting the list and double checking that it's correct. This may get boring but push through and really nail it down. Once you have memorized the list and what they do, then you should step it up by writing out tables of symbols, their names, and what they do from memory. When you hit some you can't recall from memory, go back and memorize them again.

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• Ubuntu cannot see Windows 7 partitions on install

  - by Nash0

  I've been trying to install Ubuntu 10.10 as a dual boot with Windows 7 on my Dell latitude e6510. It is currently running Windows 7 and I have used the MS disk tools to shrink the Win 7 NTFS partition to make room for Linux. The issue I'm having is that when I run Ubuntus installer by booting from CD it sees the entire hard drive as unallocated space. I have also tried Kbuntu 10.10, Fedora 14, booting a Gparted 0.8.0 usb drive, and Ubuntu "install in Windows" with wubi they all have problems. EDIT: When I run the "try Ubuntu" option on booting from cd it can mount my Windows partition and I can view the files. The output of sudo parted -l when running in try Ubuntu mode: Warning: /dev/sda contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. Perhaps it was corrupted -- possibly by a program that doesn't understand GPT partition tables. Or perhaps you deleted the GPT table, and are now using an msdos partition table. Is this a GPT partition table? Yes/No? yes Model: ATA ST9500420AS (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 has been opened read-only. Error: /dev/sr0: unrecognised disk label

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• Advice needed on Process - Service Design

  - by user99314

  Need some advice from experts on designing a flow. Create a service that will read a csv file which may contain anywhere over 6000+ rows of individual ids as shown in the sample below. Need to read that file and go to oracle database and fetch a vname,vnumber,vid of each id in the csv and then go to document repository i.e. Oracle UCM and download all documents matching vname,vnumber,vid there can be =0 documents for each vname,vnumber,vid and save them on a file system. UCM exposes a webservice to dowload the documents. Finally create a new csv appending the filenames that are downloaded for each id. Need to keep track of any errors but need to make sure to go over the whole ids in the csv to download the documents and skip in case of errors. Need some advice on how to go about designing this as there may be over 6000+ rows in a csv file and looping it and hitting the database for each individual id and then hitting a UCM may be a bit expensive so open for any idea. How to go by designing this solution. Wondering if messaging can be helpful here or offloading process of getting the vname,vnumber,vid to pl/sql packages, creating staging tables etc. Initial csv that contains ids: **ID** 12345a 12s345 3456fr we9795 we9797 Final csv output: **ID Files Downloaded from UCM** 12345a a.pdf,b.doc,d.txt 12s345 a1.pdf,s2.pdf,f4.gif 3456fr b.xls we9795 we9797 x.doc Thanks

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• model association or controller?

  - by andybritton

  I'm trying to create a rails app that allows users to submit information about their pets. I've come to a point where my knowledge is limited and I don't know enough about what/how this could be done so I'm hoping this will be relatively easy to answer. At the moment I have a model called Pet, this model currently stores basic information like name, picture etc but it also holds more specific data like type, breed, date of birth etc. What I would like to be able to do is create a page that can match various records without having to be manually categorized if that makes sense so a users pet could be matched to other pets with the same breed, age etc. I've read about nested models as I understand this information could be submitted to 2 models in one form but I am not sure whether this could be done directly in a separate controller which would only be visible to users with pets in these matched "groups" if that makes sense. So in essence is it best practice to use 1 table to store all the information and just use a controller to match pets based on rows having the same values or would it be far simpler to have a form with a nested model and link 2 tables together? The main feature needs to be matching without a user having to create a group or categorize pets so the second model would need to add id's to an array instead of just creating more and more rows.

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• Warning and error information in stored procedures revisited

  - by user13334359

  Originally way to handle warnings and errors in MySQL stored routine was designed as follows: if warning was generated during stored routine execution which has a handler for such a warning/error, MySQL remembered the handler, ignored the warning and continued execution after routine is executed MySQL checked if there is a remembered handler and activated if any This logic was not ideal and causes several problems, particularly: it was not possible to choose right handler for an instruction which generated several warnings or errors, because only first one was chosen handling conditions in current scope messed with conditions in different there were no generated warning/errors in Diagnostic Area that is against SQL Standard. First try to fix this was done in version 5.5. Patch left Diagnostic Area intact after stored routine execution, but cleared it in the beginning of each statement which can generate warnings or to work with tables. Diagnostic Area checked after stored routine execution.This patch solved issue with order of condition handlers, but lead to new issues. Most popular was that outer stored routine could see warnings which should be already handled by handler inside inner stored routine, although latest has handler. I even had to wrote a blog post about it.And now I am happy to announce this behaviour changed third time.Since version 5.6 Diagnostic Area cleared after instruction leaves its handler.This lead to that only one handler will see condition it is supposed to proceed and in proper order. All past problems are solved.I am happy that my old blog post describing weird behaviour in version 5.5 is not true any more.

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• You cannot do cross joins in SQL Azure but there is a way around that....

  - by SeanBarlow

  So I was asked today how to do cross joins in SQL Azure using Linq. Well the simple answer is you cant do it. It is not supported but there are ways around that. The solution is actually very simple and easy to implement. So here is what I did and how I did it. I created two SQL Azure Databases. The first Database is called AccountDb and has a single table named Account, which has an ID, CompanyId and Name in it. The second database I called CompanyDb and it contains two tables. The first table I named Company and the second I named Address. The Company Table has an Id and Name column. The Address Table has an Id and CompanyId columns. Since we cannot do cross joins in Azure we have to have one of the models preloaded with data. I simply put the Accounts into a List of accounts and use that in my join.   var accounts = new AccountsModelContainer().Accounts.ToList(); var companies = new CompanyModelContainer().Companies; var query = from account in accounts             join company in                 (                       from c in companies                      select c                  ) on account.CompanyId equals company.Id             select new AccountView() {                                               AccountName = account.Name, CompanyName = company.Name,                                 Addresses = company.Addresses                         }; return query.ToList();   So as long as you have your data loaded from one of the contexts you can still execute your queries and get the data back that you want.

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• How to leverage the internal HTTP endpoint available on Azure web roles?

  - by adelsors

  Imagine you have a Web application using an in-memory collection that changes occasionally, loading it from storage on the Application_Start global.asax event and updating it whenever it changes. If you want to deploy this application on Azure you need to keep in mind that more than one instance of the application can be running at any time and therefore you need to provide some mechanism to keep all instances informed with the latest changes. Because that the communication through internal endpoints between Azure role instances is at no cost, a good solution can be maintaining the information on Azure Storage Tables, reading its contents on the Application_Start event and populating its changes to all instances using the internal HTTP port available on Azure Web Roles. You need to follow these steps to leverage the internal HTTP endpoint available on Azure web roles: 1.   Define an internal HTTP endpoint in the Web Role properties, for example InternalHttpEndpoint   2.   Add a new WCF service to the Web Role, for example NotificationServices.svc 3.   Add a method on the new service to receive notifications from other role instances. 4.   Declare a class that inherits from System.ServiceModel.Activation.ServiceHostFactory and override the method CreateServiceHost to host the internal endpoint.   Note that you can use SecurityMode.None because the internal endpoint is private to the instances of the service, this is provided by the platform. 5.   Edit the markup of the service right clicking the svc file and selecting "View markup" to add the new factory as the factory to be used to create the service    6. Now you can notify changes to other instances using this code:

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