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• ASP MVC Learning Path

  - by Tarik Setia

  I know C# (studied from "CLR via C#" and C# 4 Step by Step) ,SQL & HTML. I don't have any previous development experience with any other .net Technology. But I want to develop a web application. Are these skills enough to start learn ASP.net MVC (currently i am learning form www.asp.net/mvc)? And what should be my Learning Path from ABSOLUTE BEGINNER to MASTER. It would be helpful if you Suggest some books.

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• Using LINQ to fetch result from nested SQL queries

  - by Shantanu Gupta

  This is my first question and first day in Linq so bit difficult day for me to understand. I want to fetch some records from database i.e. select * from tblDepartment where department_id in ( select department_id from tblMap where Guest_Id = @GuestId ) I have taken two DataTable. i.e. tblDepartment, tblMap Now I want to fetch this result and want to store it in third DataTable. How can I do this. I have been able to construct this query up till now after googling. var query = from myrow in _dtDepartment.AsEnumerable() where myrow.Field<int>("Department_Id") == _departmentId select myrow; Please provide me some link for learning Linq mainly for DataTables and DataSets. EDIT: I have got a very similar example here but i m still not able to understand how it is working. Please put some torch on it.

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• Paul and Kimberly are coming the UK

  - by simonsabin

  Are you working with SQL, if so then attending a Paul Randal and Kimberly Tripp seminar is a must. The amount these guys know about SQL is just scary. Their life is so SQL that the last time I was having dinner at theirs they were arguing the severity levels of certain IO error codes. Talk about extreme. Paul and Kimberly are running a Master class on the 17th June at the Radisson Edwardian Heathrow. The normal price is a bargain at £249 + VAT. I’ve managed to negotiate a discount of £100 for my...(read more)

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• The Year 2010, The Year of Change

  As I look back on the year of 2010, I could have never predicted the wonderful changes that have occurred for my wife and me. The beginning of this year started out as the 9th year that we lived in South Florida, and my fourth year working for DentalPlans.com as a software engineer/network admin. About 3 months in to the year I was given an excellent opportunity to work for MovieTickets.com in the software engineering department. This opportunity allowed me to gain experience with jQuery due to one of my projects was to reengineering MovieTickets.com existing Marketing Panel System. About 3 months after working at MovieTickets.com, my wife and I were offered an opportunity of a life time. I was offered a Job in a large background\information security company located in Nashville, TN as software engineer II.  I must note that after living in South Florida for 9 years, my wife and I really had a strong distaste for the South Florida life style and the general attitude/culture of the area. Even though we shared a strong dislike for the area in which we lived I must admit that it was a tough decision to leave MovieTickets.com because I was really doing well and I made some great new friends like Chris Catto, and Tyson Nero.  In fact, they introduced me to Local Microsoft User Groups, and software development podcast like DotNetRocks.com and Hanselminutes.com.  In addition, we also went to my first Microsoft launch down in Miami for Visual Studios 2010. I must admit it was a cool experience.  I truly hope to keep in touch with them to see how their careers grow, and I know they will. I must admit I was nervous and excited to start the next chapter in our live as I started up the 26 foot U-Haul truck and got on the road for Nashville from Boca Raton. I knew that the change was going to lead to new adventures and new opportunities that I could never imagine.  As we pulled in to the long driveway of our rental house, we knew that this was the right place for my wife and I. Natalie, my wife had actually come up to Nashville and within one week of my job offer had set up a nice rental home for us to restart our lives in TN.  I must admit that the wonderful southern hospitality took a bit to get use to due to the type of people we were used to dealing with on a regular basis. Our first 2 months seemed like we were living a dream because of our new area and the wonderful people we live around. So far my new job is going really well and I really like the people on my team and department. In fact after 6 months I am now in charge of all application builds for our new deployment process. I am also leading up a push for setting up of continuous integration within our new build process.  In addition to starting my new job, I was also offered a position as an adjust instructor at ITT Tech teaching course like VB.net, Java Script, Ajax, and database development. So far I have really like teaching at the college level.  Information technology has really been great for my life so I am really glad to be able to give back. That is actually why I started DotNetBlocks. This site allows me to document things I have learned as I work with technology, and allows others to borrow from my experiences.  I hope that this site can help others as others have helped me get where I am. Finally, I am glade to report that I only have 4 classes left for my master’s degree at Capella University. I am proud to announce that I am still on track to graduate with 3.91 GPA.  This last class was really a test because I had a crazy idea that I could work full time as a software engineer, teach two college courses as a first time teacher and also take an advanced masters class in application architecture. I have no idea how I actually survived, but I am really surprised how well I actually did. I was invited back to reach again at ITT Tech, and I passed my masters class with an “A”.  I have decided to take this next term off from my master’s program so that I do not get burned out.  Also, so that my new current employer will pay for more of my education, tuition reimbursement is an awesome benefit. This was my year 2010, how was yours?

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• hibernate and ehcache replication

  - by cachingsol

  Hi, I am working on a cache replication solution between nodes Node A - master node = Hibernate + Database + Ehcache as secondary cache Node B - regional node= Ehcache as prmiary cache. no Hibernate Node B is used only as near-by cache for query. Now I am updating data (Say SudentInfo) in Node A, it gets persisted and cached correctly. On replication side (I am using JMS) it sends a message to Node B. But the problem is, the message it sends is of instance CacheEntry(deep Inside Element), there is no way to resurrect the original object (StudentInfo). What I got in node B is CacheEntry with some attributes of Students but not actually an Student Object. Please note that I don't need Hibernate session/persistence in Node B, node B is only for fast query, persistence is done through Node A. So has anybody tried any solution like this? Is there any way to convert CacheEntry to actual object? or Tell ehcache to replicate original object rather than CacheEntry. Thanks for the help

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• You Know You’re Computer Illiterate When… [Comic]

  - by The Geek

  I remember the first time I tried to explain desktop wallpaper to my mom—totally blank stare. I imagine this is what she was thinking. Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Hack a Wireless Doorbell into a Snail Mail Indicator Enjoy Clutter-Free YouTube Video Viewing in Opera with CleanTube Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic]

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• How do I use WMI with Delphi without drastically increasing the application's file size?

  - by Mick

  I am using Delphi 2010, and when I created a console application that prints "Hello World", it takes 111 kb. If I want to query WMI with Delphi, I add WBEMScripting_TLB, ActiveX, and Variants units to my project. If I perform a simple WMI query, my executable size jumps to 810 kb. I Is there anyway to query WMI without such a large addition to the size of the file? Forgive my ignorance, but why do I not have this issue with C++? Here is my code: program WMITest; {$APPTYPE CONSOLE} uses SysUtils, WBEMScripting_TLB, ActiveX, Variants; function GetWMIstring(wmiHost, root, wmiClass, wmiProperty: string): string; var Services: ISWbemServices; SObject: ISWbemObject; ObjSet: ISWbemObjectSet; SProp: ISWbemProperty; Enum: IEnumVariant; Value: Cardinal; TempObj: OLEVariant; loc: TSWbemLocator; SN: string; i: integer; begin Result := ''; i := 0; try loc := TSWbemLocator.Create(nil); Services := Loc.ConnectServer(wmiHost, root {'root\cimv2'}, '', '', '', '', 0, nil); ObjSet := Services.ExecQuery('SELECT * FROM ' + wmiClass, 'WQL', wbemFlagReturnImmediately and wbemFlagForwardOnly, nil); Enum := (ObjSet._NewEnum) as IEnumVariant; if not VarIsNull(Enum) then try while Enum.Next(1, TempObj, Value) = S_OK do begin try SObject := IUnknown(TempObj) as ISWBemObject; except SObject := nil; end; TempObj := Unassigned; if SObject <> nil then begin SProp := SObject.Properties_.Item(wmiProperty, 0); SN := SProp.Get_Value; if not VarIsNull(SN) then begin if varisarray(SN) then begin for i := vararraylowbound(SN, 1) to vararrayhighbound(SN, 1) do result := vartostr(SN[i]); end else Result := SN; Break; end; end; end; SProp := nil; except Result := ''; end else Result := ''; Enum := nil; Services := nil; ObjSet := nil; except on E: Exception do Result := e.message; end; end; begin try WriteLn('hello world'); WriteLn(GetWMIstring('.', 'root\CIMV2', 'Win32_OperatingSystem', 'Caption')); WriteLn('done'); except on E: Exception do Writeln(E.ClassName, ': ', E.Message); end; end.

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• Entity Framework 4 relationship management in POCO Templates - More lazy than FixupCollection?

  - by Joe Wood

  I've been taking a look at EF4 POCO templates in beta 2. The FixupCollection looks fine for maintaining the model correctness after updating the relationship collection property (i.e. product.Orders it would set the order.Product reference ). But what about support for handling the scenario when some of those Order objects are removed from the context? The use-case of maintaining cascading deletes in the in-memory model. The old Typed DataSet model used to do this by performing the query through the container to derive the relationship results. Like the DataSet, this would require a reference to the ObjectContext inside the entity class so that it could query the top-level Order collection. Better support for Separation of Concerns in the ObjectContext would be required. It looks like EF is not suited to this use-case that DataSets did out of the box.... am I right?

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• Images missing after moving Django to new server

  - by miszczu

  I'm moving Django project to new server. I'm newbie in Django, and I don't know where should be upload folder. There are all images which should be displayed on website. In config file I haven't seen upload folder I could specify, so I'm guessing it always should be the same location for django projects or I just can't find it. Locations are saved in database. When I've put uploaded files into media folder, so url was like domain.co.uk/media/upload/media/images/year/month/day/image_name.ext and the same is on the old website, images on website ware still missing. All images are visible if I put url by hand, but django doesn't seems to see files. Also I check django log file: 2012-05-30 09:13:33,393 ERROR render: Thumbnail tag failed: [in /usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/templatetags/thumbnail.py (line 49)] Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/templatetags/thumbnail.py", line 45, in render return self._render(context) File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/templatetags/thumbnail.py", line 97, in _render file_, geometry, **options File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/base.py", line 50, in get_thumbnail cached = default.kvstore.get(thumbnail) File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/kvstores/base.py", line 25, in get return self._get(image_file.key) File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/kvstores/base.py", line 123, in _get value = self._get_raw(add_prefix(key, identity)) File "/usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/kvstores/cached_db_kvstore.py", line 26, in _get_raw value = KVStoreModel.objects.get(key=key).value File "/usr/lib/python2.6/site-packages/django/db/models/manager.py", line 132, in get return self.get_query_set().get(*args, **kwargs) File "/usr/lib/python2.6/site-packages/django/db/models/query.py", line 344, in get num = len(clone) File "/usr/lib/python2.6/site-packages/django/db/models/query.py", line 82, in __len__ self._result_cache = list(self.iterator()) File "/usr/lib/python2.6/site-packages/django/db/models/query.py", line 273, in iterator for row in compiler.results_iter(): File "/usr/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter for rows in self.execute_sql(MULTI): File "/usr/lib/python2.6/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql cursor.execute(sql, params) File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 34, in execute return self.cursor.execute(sql, params) File "/usr/lib/python2.6/site-packages/django/db/backends/mysql/base.py", line 86, in execute return self.cursor.execute(query, args) File "/usr/lib64/python2.6/site-packages/MySQLdb/cursors.py", line 174, in execute self.errorhandler(self, exc, value) File "/usr/lib64/python2.6/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler raise errorclass, errorvalue DatabaseError: (1146, "Table 'thumbnail_kvstore' doesn't exist") 2012-05-30 09:13:33,396 DEBUG execute: (0.000) SELECT `freetext_freetext`.`id`, `freetext_freetext`.`key`, `freetext_freetext`.`content`, `freetext_freetext`.`active` FROM `freetext_freetext` WHERE (`freetext_freetext`.`active` = True AND `freetext_freetext`.`key` = office-closed-message ); args=(True, u'office-closed-message') [in /usr/lib/python2.6/site-packages/django/db/backends/util.py (line 44)] 2012-05-30 09:13:33,399 DEBUG execute: (0.000) SELECT `menus_menu`.`id`, `menus_menu`.`name`, `menus_menu`.`slug`, `menus_menu`.`base_url`, `menus_menu`.`description`, `menus_menu`.`enabled` FROM `menus_menu` WHERE (`menus_menu`.`enabled` = True AND `menus_menu`.`slug` = about ); args=(True, u'about') [in /usr/lib/python2.6/site-packages/django/db/backends/util.py (line 44)] 2012-05-30 09:13:33,401 DEBUG execute: (0.000) SELECT `menus_menuitem`.`id`, `menus_menuitem`.`menu_id`, `menus_menuitem`.`title`, `menus_menuitem`.`url`, `menus_menuitem`.`order` FROM `menus_menuitem` INNER JOIN `menus_menu` ON (`menus_menuitem`.`menu_id` = `menus_menu`.`id`) WHERE `menus_menu`.`slug` = about ORDER BY `menus_menuitem`.`order` ASC; args=(u'about',) [in /usr/lib/python2.6/site-packages/django/db/backends/util.py (line 44)] 2012-05-30 09:13:33,404 DEBUG execute: (0.000) SELECT `freetext_freetext`.`id`, `freetext_freetext`.`key`, `freetext_freetext`.`content`, `freetext_freetext`.`active` FROM `freetext_freetext` WHERE (`freetext_freetext`.`active` = True AND `freetext_freetext`.`key` = contactdetails-footer ); args=(True, u'contactdetails-footer') [in /usr/lib/python2.6/site-packages/django/db/backends/util.py (line 44)] I checked database and there is no table calls thumbnail_kvstore, but I have database backup, and in backup files this table doesn't exist. All uploaded files I get are in media/uploads/media/. Also I'm getting errors on some pages: Syntax error. Expected: ``thumbnail source geometry [key1=val1 key2=val2...] as var`` /usr/lib/python2.6/site-packages/sorl_thumbnail-11.12-py2.6.egg/sorl/thumbnail/templatetags/thumbnail.py in __init__, line 72 In template /var/www/vhosts/domain.co.uk/sites/apps/shop/products/templates/products/product_detail.html, error at line 34 {% thumbnail image.file "800x700" detail as zoom %} Maybe some modules I install are not in the right version. Dont know how to fix it. Im using, CentOS 6, mod_wsgi, apache, python 2.6. Update 1.0: On the old server was Django 1.3, on the new one is Django 1.3.1 Update 1.1: I this i know where is the problem. I tried python manage.py syncdb and this is output: Syncing... Creating tables ... The following content types are stale and need to be deleted: orders | ordercontact Any objects related to these content types by a foreign key will also be deleted. Are you sure you want to delete these content types? If you're unsure, answer 'no'. Type 'yes' to continue, or 'no' to cancel: no Installing custom SQL ... Installing indexes ... No fixtures found. Synced: > django.contrib.auth > django.contrib.contenttypes > django.contrib.sessions > django.contrib.sites > django.contrib.messages > django.contrib.admin > django.contrib.admindocs > django.contrib.markup > django.contrib.sitemaps > django.contrib.redirects > django_filters > freetext > sorl.thumbnail > django_extensions > south > currencies > pagination > tagging > honeypot > core > faq > logentry > menus > news > shop > shop.cart > shop.orders Not synced (use migrations): - dbtemplates - contactform - links - media - pages - popularity - testimonials - shop.brands - shop.collections - shop.discount - shop.pricing - shop.product_types - shop.products - shop.shipping - shop.tax (use ./manage.py migrate to migrate these) Next I run python manage.py migrate, and thats what i get: Running migrations for dbtemplates: - Migrating forwards to 0002_auto__del_unique_template_name. > dbtemplates:0001_initial ! Error found during real run of migration! Aborting. ! Since you have a database that does not support running ! schema-altering statements in transactions, we have had ! to leave it in an interim state between migrations. ! You *might* be able to recover with: = DROP TABLE `django_template` CASCADE; [] = DROP TABLE `django_template_sites` CASCADE; [] ! The South developers regret this has happened, and would ! like to gently persuade you to consider a slightly ! easier-to-deal-with DBMS. ! NOTE: The error which caused the migration to fail is further up. Traceback (most recent call last): File "manage.py", line 13, in <module> execute_manager(settings) File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/management/commands/migrate.py", line 105, in handle ignore_ghosts = ignore_ghosts, File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/__init__.py", line 191, in migrate_app success = migrator.migrate_many(target, workplan, database) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 221, in migrate_many result = migrator.__class__.migrate_many(migrator, target, migrations, database) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 292, in migrate_many result = self.migrate(migration, database) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 125, in migrate result = self.run(migration) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 99, in run return self.run_migration(migration) File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 81, in run_migration migration_function() File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/migration/migrators.py", line 57, in <lambda> return (lambda: direction(orm)) File "/usr/lib/python2.6/site-packages/django_dbtemplates-1.3-py2.6.egg/dbtemplates/migrations/0001_initial.py", line 18, in forwards ('last_changed', self.gf('django.db.models.fields.DateTimeField')(default=datetime.datetime.now)), File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/db/generic.py", line 226, in create_table ', '.join([col for col in columns if col]), File "/usr/lib/python2.6/site-packages/South-0.7.3-py2.6.egg/south/db/generic.py", line 150, in execute cursor.execute(sql, params) File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 34, in execute return self.cursor.execute(sql, params) File "/usr/lib/python2.6/site-packages/django/db/backends/mysql/base.py", line 86, in execute return self.cursor.execute(query, args) File "/usr/lib64/python2.6/site-packages/MySQLdb/cursors.py", line 174, in execute self.errorhandler(self, exc, value) File "/usr/lib64/python2.6/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler raise errorclass, errorvalue _mysql_exceptions.OperationalError: (1050, "Table 'django_template' already exists") Also i run python manage.py migrate --list, and uotput is: dbtemplates (*) 0001_initial (*) 0002_auto__del_unique_template_name contactform (*) 0001_initial (*) 0002_auto__add_callback (*) 0003_auto__add_field_callback_notes (*) 0004_auto__add_field_callback_is_closed__add_field_callback_closed (*) 0005_auto__add_field_callback_url (*) 0006_auto__add_contact (*) 0007_auto__add_field_contact_category (*) 0008_auto__add_field_contact_url links (*) 0001_initial (*) 0002_auto__add_field_category_enabled__add_field_category_order media (*) 0001_initial (*) 0002_auto__del_field_image_external_url__add_field_image_link_url__del_fiel (*) 0003_add_model_FileAttachment (*) 0004_auto__chg_field_file_slug__chg_field_image_slug (*) 0005_auto__chg_field_image_file (*) 0006_auto__chg_field_file_file pages (*) 0001_initial (*) 0002_auto__chg_field_page_meta_description__chg_field_page_meta_title__chg_ (*) 0003_auto__add_field_page_show_in_sitemap (*) 0004_auto__add_field_page_changefreq__add_field_page_priority popularity (*) 0001_initial testimonials (*) 0001_initial (*) 0002_auto__add_field_testimonial_is_featured brands (*) 0001_initial (*) 0002_auto__add_field_brand_template (*) 0003_auto__chg_field_brand_meta_description__chg_field_brand_meta_title__ch (*) 0004_auto__add_field_brand_url (*) 0005_auto__del_field_brand_image__add_field_brand_logo collections (*) 0001_initial (*) 0002_auto__add_field_collection_discount (*) 0003_auto__chg_field_collection_meta_description__chg_field_collection_meta (*) 0004_auto__add_field_collection_is_featured (*) 0005_auto__add_field_collection_order discount (*) 0001_initial (*) 0002_added_field_discount_description (*) 0003_auto__add_field_discountvoucher_automatic (*) 0004_auto__add_field_discountvoucher_collection (*) 0005_auto__del_field_discountvoucher_collection (*) 0006_auto__chg_field_discountvoucher_expiry_date pricing (*) 0001_initial (*) 0002_auto__add_pricingrule product_types (*) 0001_initial (*) 0002_auto__add_field_producttype_meta_title__add_field_producttype_meta_des (*) 0003_auto__add_field_producttype_summary__add_field_producttype_description products (*) 0001_initial (*) 0002_auto__del_field_product_is_featured (*) 0003_auto__chg_field_product_meta_keywords__chg_field_product_meta_descript (*) 0004_auto shipping (*) 0001_initial (*) 0002_auto__add_field_shippingmethod_includes_tax__add_field_shippingmethod_ (*) 0003_auto__add_field_shippingmethod_order (*) 0004_auto__del_field_shippingmethod_tax_rate__del_field_shippingmethod_incl (*) 0005_auto__del_field_shippingrule_enabled tax (*) 0001_initial (*) 0002_auto__add_field_taxrate_internal_name (*) 0003_initial_internal_names (*) 0004_auto__add_unique_taxrate_internal_name (*) 0005_force_unique_taxrate_name (*) 0006_auto__add_unique_taxrate_name After that some images source were something like this: src="cache/1e/bd/1ebd719910aa843238028edd5fe49e71.jpg" Is any1 could help me with syncdb pledase?

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• Get Members of Band

  - by user168083

  If I look at the Freebase page for the band '311', I see Chad Sexton listed. http://www.freebase.com/view/en/311 I am trying to query for the members of a band : { "name" : "311", "/music/artist/album" : [{"name":null, "id":null, "optional": true}], "type|=" : ["/music/artist","/music/musical_group"], "/award/award_winner/awards_won" : ["award":null, "optional" => true], "/award/award_nominated_work/award_nominations" : ["award":null, "optional" => true], "/music/artist/supporting_artists":[{}] } I thought supporting_artists would return the band member names, but the array is always empty. But if I query for all properties related to Chad Sexton, I don't see 311 mentioned. But he is listed as member on the Freebase web info page (which is correct). { "*": null, "name": "Chad Sexton", "type": "/music/artist" } How can I grab the band member names along with the band info?

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• Where can I download Northwind database for Postgresql?

  - by Hao

  Is there a downloadable Postgres database that contains dummy data? preferably Northwind, something i can practice my query ideas

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• Programmatically specifying Django model attributes

  - by mojbro

  Hi! I would like to add attributes to a Django models programmatically, at run time. For instance, lets say I have a Car model class and want to add one price attribute (database column) per currency, given a list of currencies. What is the best way to do this? I had an approach that I thought would work, but it didn't exactly. This is how I tried doing it, using the car example above: from django.db import models class Car(models.Model): name = models.CharField(max_length=50) currencies = ['EUR', 'USD'] for currency in currencies: Car.add_to_class('price_%s' % currency.lower(), models.IntegerField()) This does seem to work pretty well at first sight: $ ./manage.py syncdb Creating table shop_car $ ./manage.py dbshell shop=# \d shop_car Table "public.shop_car" Column | Type | Modifiers -----------+-----------------------+------------------------------------------------------- id | integer | not null default nextval('shop_car_id_seq'::regclass) name | character varying(50) | not null price_eur | integer | not null price_usd | integer | not null Indexes: "shop_car_pkey" PRIMARY KEY, btree (id) But when I try to create a new Car, it doesn't really work anymore: >>> from shop.models import Car >>> mycar = Car(name='VW Jetta', price_eur=100, price_usd=130) >>> mycar <Car: Car object> >>> mycar.save() Traceback (most recent call last): File "<console>", line 1, in <module> File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/base.py", line 410, in save self.save_base(force_insert=force_insert, force_update=force_update) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/base.py", line 495, in save_base result = manager._insert(values, return_id=update_pk) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/manager.py", line 177, in _insert return insert_query(self.model, values, **kwargs) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/query.py", line 1087, in insert_query return query.execute_sql(return_id) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/sql/subqueries.py", line 320, in execute_sql cursor = super(InsertQuery, self).execute_sql(None) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/models/sql/query.py", line 2369, in execute_sql cursor.execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/django/db/backends/util.py", line 19, in execute return self.cursor.execute(sql, params) ProgrammingError: column "price_eur" specified more than once LINE 1: ...NTO "shop_car" ("name", "price_eur", "price_usd", "price_eur... ^

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• Get-WMIObject fails when run AsJob

  - by codepoke

  It's a simple question, but it's stumped me. $cred = Get-Credential $jobs = @() $jobs += Get-WmiObject ` -Authentication 6 ` -ComputerName 'serverName' ` -Query 'Select * From IISWebServerSetting' ` -Namespace 'root/microsoftiisv2' ` -EnableAllPrivileges ` -Credential $cred ` -Impersonation 4 ` -AsJob $joblist = Wait-Job -Job $jobs -Timeout 60 foreach ($job in $jobs) { if ($job.State -eq "Completed") { $app = Receive-Job -Job $job $app } else { ("Job not completed: " + $job.Name + "@" + $job.State + ". Reason:" + $job.ChildJobs[0].JobStateInfo.Reason) Remove-Job -Job $job -Force } } The query succeeds when run directly and fails when run -AsJob. Reason:System.UnauthorizedAccessException: Access is denied. I've jiggered with -Impersonation, -Credentials, -Authority, and -EnableAllPrivileges to no useful effect. It appears I'm overlooking something fundamental. Why is my Powershell prompt allowed to connect to the remote server, but my child process denied?

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• An existing connection was forcibly closed by the remote host

  - by George

  I have a fat VB.NET Winform client that is using the an old asmx style web service. Very often, when I perform query that takes a while, I get the subject error. The error happenes The error seems to occur in < 1 min, which is far less that the web service timeout value that I have set or the timeout value on the ADO Command object that is performing the query within the web server. It seems to occur whenever I am performing a large query that expects to return a lot of rows or when I am sending up a large amount of data to the web service. For example, it just occurred when I was passing a large dataset to the web server: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead) --- End of inner exception stack trace --- at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at Smit.Pipeline.Bo.localhost.WsSR.SaveOptions(String emailId, DataSet dsNeighborhood, DataSet dsOption, DataSet dsTaskApplications, DataSet dsCcUsers, DataSet dsDistinctUsers, DataSet dsReferencedApplications) in C:\My\Code\Pipeline2\Smit.Pipeline.Bo\Web References\localhost\Reference.vb:line 944 at Smit.Pipeline.Bo.Options.Save(TaskApplications updatedTaskApplications) in I've been looking a tons of postings on this error and it is surprising at how varied the circumstances which cause this error are. I've tried messing with Wireshark, but I am clueless how to use it. This application only has about 20 users at any one time and I am able to reproduce this error in the middle of the night when probably no one is using the app, so I don't think that the number of requests to the web server or to the database is high. It's probably one right now when I just got the error now. It seems to have to do everything with the amt of data being passed in either direction. This error is really chronic and killing me. Please help.

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• Specifying culture for http request/reponse

  - by Akash

  I have a ReSTful web service which needs to parse culture-sensitive data from the request. This data could either be in an XML body or part of the query string. Is there any acepted way of determining which culture the data is being sent in (and by extension the culture in which the response should be sent)? One option is simply to specify to the clients the culture in which all requests should be sent. A friendlier option seems to be to allow the client to specify the culture. I've considered: a) using the accept-language http header to encode this information. b) using the xml:lang attribute for XML POSTs, and an extra field for query strings (e.g. ...&culture=en-GB) http://www.w3.org/International/questions/qa-accept-lang-locales warns of limitations in using the accept-language header, but most of the warnings seem to center around requests originating from browsers. In my case the requests will come from other applications. All advice greatly appreciated!

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• Drupal db_query error need help

  - by Gobi

  Hi drupal pals, im using drupal 6.15 and doing my first project in drupal . i got an issue while running the below query with db_query i have drupal,delhi keywords in column 'tag' with table name tagging. db_query(SELECT * FROM {tagging} WHERE tag LIKE '%drup%') wont retrieve the correct output. it show null but the query modified like this, db_query(SELECT * FROM {tagging} WHERE tag LIKE 'drup%') retrieve "drupal" as output finally i used the php core mysql_query mysql_query(SELECT * FROM tagging WHERE tag LIKE '%drup%') it retrieve the exact n correct output "drupal" . is any one have solution , Thanxs, Gobi

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• Storable Geocoding/reverse Geocoding services

  - by Marcus

  Im currently looking into an easy way to query and store Latitude/Longitude for a given address. There are a plentitude of services out there, but none actually allows me to store the data I retieve (i.e. Google Maps API TOS, Yahoo! Maps API TOS). As I wan't to use them for a distance search I can't really query the data on the fly. Are there any services that acutally allow to store the location you get for an adress? And I want to do it more or less worldwide. (As a side question, I might need the other way around soon, getting from latitude/longitude to an address or place name, but this falls under the same terms as the above).

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• Cannot right click with synaptics touchpad

  - by fluteflute

  I have a Sony VAIO E14. The touchpad detects all clicks as Left clicks. In Windows 7, pressing on the right side of the touchpad is recognised as a right click. How can I enable right clicking? greg@greg-SVE14A1C5E:~$ xinput ? Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? SynPS/2 Synaptics TouchPad id=11 [slave pointer (2)] ... greg@greg-SVE14A1C5E:~$ grep "TouchPad: buttons:" /var/log/Xorg.0.log [ 23.112] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left double triple

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• Codeigniter active record select, left join, count

  - by sea_1987

  Hi There, I have a form that shows results from a database query, these results can have many other assets ajoined to them and I wanting to find a way of showing how many assets each elemement has. For example my table is of areas of england an other table has where the users live I current have this code, $this->db->select('*'); $this->db->from('places'); $this->db->join('users, places.place_id = user.place_id, left'); $this->db->get(); The issue I am having is getting the query to return the place name and the number of users living in that place, it is possible?

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• HQL to get elements that possess all items in a set

  - by Tauren

  Currently, I have an HQL query that returns all Members who possess ANY Award from a set of specified Awards: from Member m left join m.awards as a where a.name in ("Trophy","Ribbon"); What I now need is HQL that will return all Members who possess ALL Awards specified in the set of Awards. So, assuming this data: Joe has Trophy, Medal Sue has Trophy, Ribbon Tom has Trophy, Ribbon, Medal The query above would return Joe, Sue, and Tom because all three possess at least one of Trophy or Ribbon. But I need to return only Sue and Tom, because they are the only ones who possess all of the specified awards (Trophy and Ribbon). Here's the class structure (simplified): class Member { private String name; private Set<Award> awards; } class Award { private String name; }

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• PHP - How to use Php inside Php?

  - by Dodi300

  Hello. Can someone tell/show me how to use PHP inside PHP. I'm trying to make the URL of an image change depending on what value is in a MySQL database. Here's an example of what I'm trying to do. Bear in mind that $idx already has a value from the URL of the page. <?php $query = "SELECT * FROM comment WHERE uname='$idx'"; $result = mysql_query($query); while($row = mysql_fetch_array($result, MYSQL_ASSOC)) { echo "<img src='' name='comm' width='75px' height='60px' id='mainimage' />"; } ?> How would I make the source value, for the image, come from a different table?

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• Linq Paging - How to incorporate total record count

  - by Billy Logan

  Hello everyone, I am trying to figure out the best way of getting the record count will incorporating paging. I need this value to figure out the total page count given a page size and a few other variables. This is what i have so far which takes in the starting row and the page size using the skip and take statements. promotionInfo = (from p in matches orderby p.PROMOTION_NM descending select p).Skip(startRow).Take(pageSize).ToList(); I know i could run another query, but figured there may be another way of achieving this count without having to run the query twice. Thanks in advance, Billy

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• My simple PHP is outputting wrong things.

  - by Sergio Tapia

  EDIT: I forgot to add semi colons. Now there is another problems. I'm getting a error: Parse error: syntax error, unexpected T_STRING in C:\xampp\htdocs\useraccess.php on line 12 It outputs: 0){ echo 'si'; } ?> When it should only output 'si' in the body. Here's the code: <html> <head> </head> <body> <? $user = mysql_real_escape_string($_GET["u"]) $pass = mysql_real_escape_string($_GET["p"]) $query = "SELECT * FROM usario WHERE username = '$user' AND password = '$pass'" mysql_connect(localhost, "sergio", "123"); @mysql_select_db("multas") or die( "Unable to select database"); $result=mysql_query($query); if(mysql_numrows($result) > 0){ echo 'si'; } ?> </body> </html>

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• Using LINQ Group By to return new XElements

  - by Jon

  I have the following code and got myself confused: I have a query that returns a set of records that have been identified as duplicates and I then want to create a XElement for each one. This should be done in one query I think but I'm now lost. var f = (from x in MyDocument.Descendants("RECORD") where itemsThatWasDuplicated.Contains((int)x.Element("DOCUMENTID")) group x by x.Element("DOCUMENTID").Value into g let item = g.Skip(1) //Ignore first as that is the valid one select item ); var errorQuery = (from x in f let sequenceNumber = x.Element("DOCUMENTID").Value let detail = "Sequence number " + sequenceNumber + " was read more than once" select new XElement("ERROR", new XElement("DATETIME", time), new XElement("DETAIL", detail), new XAttribute("TYPE", "DUP"), new XElement("ID", x.Element("ID").Value) ) );

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• How to get MAX value of a version-number (varchar) column in T-SQL

  - by Ogre Psalm33

  I have a table defined like this: Column: Version Message Type: varchar(20) varchar(100) ---------------------------------- Row 1: 2.2.6 Message 1 Row 2: 2.2.7 Message 2 Row 3: 2.2.12 Message 3 Row 4: 2.3.9 Message 4 Row 5: 2.3.15 Message 5 I want to write a T-Sql query that will get message for the MAX version number, where the "Version" column represents a software version number. I.e., 2.2.12 is greater than 2.2.7, and 2.3.15 is greater than 2.3.9, etc. Unfortunately, I can't think of an easy way to do that without using CHARINDEX or some complicated other split-like logic. Running this query: SELECT MAX(Version) FROM my_table will yield the erroneous result: 2.3.9 When it should really be 2.3.15. Any bright ideas that don't get too complex?

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