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• Objective-C: how to splt a string constant across multiple lines

  - by Ilya

  Hi, I have a pretty long sqlite query: const char *sql_query = "SELECT statuses.word_id FROM lang1_words, statuses WHERE statuses.word_id = lang1_words.word_id ORDER BY lang1_words.word ASC"; How can I break it in a number of lines to make it easier to read? If I do the following: const char *sql_query = "SELECT word_id FROM table1, table2 WHERE table2.word_id = table1.word_id ORDER BY table1.word ASC"; I am getting a error. Is there a way to write queries in multiple lines? Thank you.

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• Is it possible to implement a lightweight database using Blackberry Persistance options?

  - by Tobias

  First I would like to explain why I want to use alternate Blackberry Persistance options rather than a Blackberry database itself, say SQLite. The reason is that the application i'm designing, I want it to be used in all the previous versions of Blackberry rather than just the ones having OS 5.0 or greater. Now, coming back to the actual question, I have got a database that I want to replicate to be used in the Blackberry application. The database has 8 tables and each table has approximately 12 different columns. One of the table has 1000 rows. Now if I was to implement this DB for a Blackberry application , keeping in mind that it will work on all the versions of Blackberry, what would be the best way to implement it?

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• Actual SQL statement after bind variables specified

  - by bioffe

  I am trying to log every SQL statement executed from my scripts. However I contemplate one problem I can not overcome. Is there a way to compute actual SQL statement after bind variables were specified. In SQLite I had to compute the statement to be executed manually, using code below: def __sql_to_str__(self, value,args): for p in args: if type(p) is IntType or p is None: value = value.replace("?", str(p) ,1) else: value = value.replace("?",'\'' + p + '\'',1) return value It seems CX_Oracle has cursor.parse() facilities. But I can't figure out how to trick CX_Oracle to compute my query before its execution.

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• Querying Same Lookup Table With Multiple Columns

  - by dmaruca

  I'm a bit confused on this. I have a data table structured like this: Table: Data DataID Val 1 Value 1 2 Value 2 3 Value 3 4 Value 4 Then I have another table structured like this: Table: Table1 Col1 Col2 1 2 3 4 4 3 2 1 Both columns from Table1 point to the data in the data table. How can I get this data to show in a query? For example, a query to return this: Query: Query1 Column1 Column2 Value 1 Value 2 Value 3 Value 4 Value 4 Value 3 Value 2 Value 1 I'm familiar enough with SQL to do a join with one column, but lost beyond that. Any help is appreciated. Sample sql or a link to something to read. Thanks! PS: This is in sqlite

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• Running a ProgressDialog MonoAndroid

  - by user1791926

  I am trying to run a progressDialog that will loading items into a Sqlite datebase on a first load for my application. I get an error message because the application runs the rest of the code in the application before the rest of the data is loaded into the database. How do I make sure the code is completed in the progressDialog before the code in the rest of the program? LocalDatabase DB = new LocalDatabase(); var dbpd = ProgressDialog.Show(this, "Loading Database", "Please wait Loading Data",true); ThreadPool.QueueUserWorkItem((s) =>{ DB.createDB(); RunOnUiThread(() => databaseLoaded()); });

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• Facing trouble in retrieving relevant records

  - by Umaid

  SELECT * from MainCategory where Month = 'May' and Day in ((cast(strftime('%d',date('now','-1 day')) as Integer)),(cast(strftime('%d',date('now')) as Integer)),(cast(strftime('%d',date('now','+1 day')) as Integer))); Whenever I run this query in sqlite so it returns me 33 records instead of 3. I am insterested in fetching on 3 records of the current month but unable to do so, so plz assist. --Please note: if you can't assist so plz don't post irrelevant answer. I have also modified and try to make it simple but not achieve Select day, month from MainCategory where Month = 'May' and day in ((date('now','-1 day')),(date('now')),(date('now','+1 day')))

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• Oracle ORA-01795 error in Rails

  - by Cyborgo

  Hi, I am using Oracle as database for my Rails applications and have got some pretty intense tables. I'm trying to find the particular entries using a query like this Author.all( :conditions => { :name => names } ) I have been working SQlite all along and just migrated to Oracle which complains that IN clause has more than 1000 entries. Obvious workaround would be to break it into subclauses for which I need to write some raw sql queries. Is there anything in Rails that facilitate this?

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• What is the precedence of characters when sorting in MySQL, PHP, or just in general?

  - by FireCoding

  Question: Where can I find the precedence of characters when sorting in MySQL, PHP, or just in general on Linux and Windows OS? For example, everybody knows that a comes before b when performing an ascending sort on a string in MySQL. But what about other characters? Does the dollar-sign $ come before asterisk * ? Does a space come before an exclamation-mark? etc... What dictates the sort order? Does it use underlying ascii / UTF-8 values? Is it different for different technologies? Technologies to consider: Databases - MySQL / SQL / SQLite / Oracle / etc Programming languages (for string-sorting functions) - PHP / Javascript / ASP.NET / Visual C# / Python / Ruby / Objective C OS (i.e., sorting files by filename) - Windows / Linux / MacOS / iOS / Android

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• How to organize database access code in Android project?

  - by Mladen Jablanovic

  I have created a ContentProvider for my main Sqlite table, pretty much following NotePad example from SDK (although I am not sure whether I will ever be exposing my data to other apps). However, I need to create lots of other, non-trivial queries on that and other tables and views. A good example would be queries to extract some statistics from the base data, averages, totals etc. So what's the best place for this code in an Android project? How it should be related and connected to the Uri-based data access exposed by a Provider? Any good examples out there?

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• Entity diagram with tables that have foreign keys that point to a non-PK column do not show relation

  - by Jason Coyne

  I have two tables parent and child. If I make a foreign key on child that points to the primary key of parent, and then make an entity diagram, the relationship is shown correctly. If I make the foreign key point to a different column, the relationship is not shown. I have tried adding indexes to the column, but it does not have an effect. The database is sqlite, but I am not sure if that has an effect since its all hidden behind ADO.net. How do I get the relationship to work correctly?

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• Export from a standalone database to an embedded database.

  - by jdana

  I have a two-part application, where there is a central database that is edited, and then at certain times, the data is released and distributed as its own application. I would like to use a standalone database for the central database (MySQL, Postgres, Oracle, SQL Server, etc.) and then have a reliable export to an embedded database (probably SQLite) for distribution. What tools/processes are available for such an export, or is it a practice to be avoided? EDIT: A couple of additional pieces of information. The distributed application should be able to run without having to connect to another server (ex: your spellchecker still works even you don't have internet), and I don't want to install a full DB server for read-only access to the data.

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• Implementing "select distinct ... from ..." over a list of Python dictionaries

  - by daveslab

  Hi folks, Here is my problem: I have a list of Python dictionaries of identical form, that are meant to represent the rows of a table in a database, something like this: [ {'ID': 1, 'NAME': 'Joe', 'CLASS': '8th', ... }, {'ID': 1, 'NAME': 'Joe', 'CLASS': '11th', ... }, ...] I have already written a function to get the unique values for a particular field in this list of dictionaries, which was trivial. That function implements something like: select distinct NAME from ... However, I want to be able to get the list of multiple unique fields, similar to: select distinct NAME, CLASS from ... Which I am finding to be non-trivial. Is there an algorithm or Python included function to help me with this quandry? Before you suggest loading the CSV files into a SQLite table or something similar, that is not an option for the environment I'm in, and trust me, that was my first thought.

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• sync android application with website?

  - by Pranav

  //https://play.google.com/store/apps/details?id=in.co.discoverit.my_FlashCards here i launched the first version of my flash card application I am working on Flash Card application. Here i used sqlite Db to store my cards and data. Know i want to synchronize my database with website database..... So how would i do this for my application??? Please any one tell me how should i start doing this and also tell me the possible ways to do this on both device side and website side.... Its urgent for my application. Can any one help me out.... Regard, Pranav

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• How to store array in one column in Sqlite3?

  - by SPK

  Hi, Is there any way to store an array of integers in one column of table? I want o/p like this: ident | value | count ----------------+------------------------------------------------------------------------------------------------------------------------+------- 563 | [0:10]={"(0,0)","(1,100)","(2,200)","(3,300)","(4,400)","(5,500)"} | 6 This I have already acheieved through postgres but i want same o/p from sqlite also. Here column value store an array. I tried it through BLOB but it is not working. Somebody told me about serialized way but i am not sure how to do that. Please help. Thanks in advance.

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• Ruby ActiveRecord + Mongrel going slow

  - by stel

  I have a class like this: class Router :: Mongrel::HttpHandler def process(req, res) status, header, body = [200, {"Content-type"="text/html"}, Model.all.to_xml] res.start(status) do |head, out| header.each_pair { |key, value| head[key] = value } out.write body end end end It's an server and I use an ActiveResource front end on the other side. Every 3rd request is very slow (about 5 seconds, 1st and 2nd is ok, about 0.01 sec). The problem in Model.all.to_xml (it is ActiveRecord - SQLite). Why it is too slow? It only happens when I use it in Mongrel::HttpHandler.. This 100.times do a = Time.now Car.all.to_xml puts "#{Time.now - a}" sleep(1) end is always works good.

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• Python - How can I make this code asynchronous?

  - by dave

  Here's some code that illustrates my problem: def blocking1(): while True: yield 'first blocking function example' def blocking2(): while True: yield 'second blocking function example' for i in blocking1(): print 'this will be shown' for i in blocking2(): print 'this will not be shown' I have two functions which contain while True loops. These will yield data which I will then log somewhere (most likely, to an sqlite database). I've been playing around with threading and have gotten it working. However, I don't really like it... What I would like to do is make my blocking functions asynchronous. Something like: def blocking1(callback): while True: callback('first blocking function example') def blocking2(callback): while True: callback('second blocking function example') def log(data): print data blocking1(log) blocking2(log) How can I achieve this in Python? I've seen the standard library comes with asyncore and the big name in this game is Twisted but both of these seem to be used for socket IO. How can I async my non-socket related, blocking functions?

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• MySql. What is there error on this insert+select+where statement?

  - by acidzombie24

  What is wrong with this statement? It works with sqlite and MS sql (last time i tested it) I would like a select unless there is no match with name or email. Then i would like to insert. I have it as one statement because its easy to keep concurrent safe as one statement. (its not that complex of a statement). INSERT INTO `user_data` ( `last_login_ip`, `login_date`, ...) SELECT @0, @14 WHERE not exists (SELECT * FROM `user_data` WHERE `name` = @15 OR `unconfirmed_email` = @16 LIMIT 1); Exception You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE not exists (SELECT * FROM `user_data` WHERE `name` = 'thename' OR `unconfirmed' at line 31

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• A step-up from TiddlyWiki that is still 100% portable?

  - by Smandoli

  TiddlyWiki is a great idea, brilliantly implemented. I'm using it as a portable personal "knowledge manager," and these are the prize virtues: It travels on my USB flash memory stick and runs on any computer, regardless of operating system No software installation is needed on the computer (TiddlyWiki merely uses the Internet browser) No Internet connection is needed In terms of data retrieval functionality, it mimics a relational database (use of tags and internal links) Let's say I've got a million words of prose in 4,000 tiddlers (posts). I'm still testing, but it looks like TiddlyWiki gets very slow. Is there an app like TiddlyWiki that keeps all the virtues I listed above, and allows more storage? NOTE: Separation of content and presentation would be ideal. It's nifty that TiddlyWiki has everything in a single HTML document, but it's unhelpful in many ways. I don't care if a directory of assorted docs is needed (SQLite, XML?), as long as it's functionally self-contained.

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• Custom edit box - how to do it?

  - by user3834459

  I'd like to create a new text editor with some non-standard capabilities for the edit box where you would normally type your code (and do syntax highlighting). Since I'd like to have complete control over this I was thinking how should I proceed.. my target is primarily linux and I was thinking to use GTK+ as GUI toolkit. Since I'm a newbie I'm not sure how custom controls are drawn/rendered. Should I consider using openGL to draw a control from scratch? That doesn't sound right to be honest but I have no idea on how to do it.. The "nonstandard capabilities" would include drawing stuff on the control (shapes and boxes) at any position, being able to write into multiple areas.. all stuff you can't normally do with an edit box. Question: How should I create a GTK+ nonstandard GUI control like an edit box that has the following capabilities: edit text, select text, delete text, draw message boxes on top of it, draw images inside it (under and/or on top of the text), insert text into multiple places at the same time? Should I subclass an edit box control or should I "render" an entirely new one with openGL or such? I'm still in the design phase (I even need to identify the frameworks I should use) and I've taken a look at the Chromium project (GTK+). I haven't found anything that suited my problem

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• Comments syntax for Idoc Script

  - by kyle.hatlestad

  Maybe this is widely known and I'm late to the party, but I just ran across the syntax for making comments in Idoc Script. It's been something I've been hoping to see for a long time. And it looks like it quietly snuck into the 10gR3 release. So for comments in Idoc Script, you simply [[% surround your comments in these symbols. %]] They can be on the same line or span multiple lines. If you look in the documentation, it still mentions making comments using the syntax. Well, that's certainly not an ideal approach. You're stuffing your comment into an actual variable, it's taking up memory, and you have to watch double-quotes in your comment. A perhaps better way in the old method is to start with my comments . Still not great, but now you're not assigning something to a variable and worrying about quotes. Unfortunately, this syntax only works in places that use the Idoc format. It can't be used in Idoc files that get indexed (.hcsp & .hcsf) and use the <!--$...--> format. For those, you'll need to continue using the older methods. While on the topic, I thought I would highlight a great plug-in to Notepad++ that Arnoud Koot here at Oracle wrote for Idoc Script. It does script highlighting as well as type-ahead/auto-completion for common variables, functions, and services. For some reason, I can never seem to remember if it's DOC_INFO_LATESTRELEASE or DOC_INFO_LATEST_RELEASE, so this certainly comes in handy. I've updated his plug-in to use this new comments syntax. You can download a copy of the plug-in here which includes installation instructions.

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• Want to learn/dive into Java Web Development—where to start?

  - by ernesto che

  Hi folks, I want to dive into Java Web Development, but I don’t know where to start because I am overwhelmed with Frameworks, JSRs, modules and the like. Coming from a PHP and Ruby (on Rails) background, it may seem awkward to go the other way ’round—still there are a lot of places where Java is (and probably will be) prevalent. I know basic Java concepts, syntax and OOP, and I have done (too much) nonsense in existing projects in JSP. I am already using SVN and GIT, but like coding PHP and Ruby mostly via VIM, i’ve also done versioning from the command line. But this time I want to learn to build a new project from the ground up, in a more, let’s say, academic way (instead of the hackery to date). Looking at e. g. Eclipse frightens me. Then there is Struts, Spring, JPA, Hibernate, Seam, just to throw in some buzzwords, that I cannot put into clear relation to each other. Can you point me to some tutorials or books that could help me? What are the technologies you absolutely have to know, the JSRs that are widely implemented in the industry? Or, if you are an employer: What does a “Junior Java Web developer” have to know? Thanks for your suggestions!

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• Apache2 on Raspbian: Multiviews is enabled but not working

  - by Christian L

  I recently moved webserver, from a ubuntuserver set up by my brother (I have sudo) to a rasbianserver set up by my self. On the other server multiviews worked out of the box, but on the raspbian it does not seem to work althoug it seems to be enabled out of the box there as well. What I am trying to do is to get it to find my.doma.in/mobile.php when I enter my.doma.in/mobile in the adress field. I am using the same available-site-file as I did before, the file looks as this: <VirtualHost *:80> ServerName my.doma.in ServerAdmin [email protected] DocumentRoot /home/christian/www/do <Directory /> Options FollowSymLinks AllowOverride All </Directory> <Directory /home/christian/www/do> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> From what I have read various places while googling this issue I found that the negotiation module had to be enabled so I tried to enable it. sudo a2enmod negotiation Giving me this result Module negotiation already enabled I have read through the /etc/apache2/apache2.conf and I did not find anything in particular that seemed to be helping me there, but please do ask if you think I should post it. Any ideas on how to solve this through getting Multiviews to work?

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• Why do XSLT editors insert tab or space characters into XSLT to format it?

  - by pgfearo

  All XSLT editors I've tried till now add tab or space characters to the XSLT to indent it for formatting. This is done even in places within the XSLT where these characters are significant to the XSLT processor. XSLT modified for formatting in this way can produce output very different to that of the original XSLT if it had no formatting. To prevent this, xsl:text elements or other XSLT must be added to a sequence constructor to help separate formatting from content, this additional XSLT impacts on maintainability. Formatting characters also adversely impact on general usability of the tool in a number of ways (this is why word-processors don't use them I guess) and add to the size of the file. As part of a larger project I've had to develop a light-weight XSLT editor, it's designed to format XSLT properly, but without tab or space characters, just a dynamic left-margin for each new line. The XSLT therefore doesn't need additional elements to separate formatting tab or space characters from content. The problem with this is that if XSLT from this editor is opened in other XSLT editors, characters will be added for formatting reasons and the XSLT may therefore no longer behave as intended. Why then do existing XSLT editors use tabs or spaces for formatting in the first place? I feel there must be valid reasons, perhaps historical, perhaps practical. An answer will help me understand whether I need to put compatibility options in place in my XSLT editor somehow, whether I should simply revert to using tabs or spaces for both XSLT content and formatting (though this seems like a backwards step to me), or even whether enough XSLT users might be able to persuade their tools vendors to include alternative formatting methods to tabs or spaces. Note: I provided an XSLT sample demonstrating formatting differences in this answer to the question: Tabs versus spaces—what is the proper indentation character for everything, in every situation, ever?

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• Google Earth 6–It’s All About Trees & Better Street View

  - by Gopinath

  The latest version of Google Earth is all about viewing 3D models of trees that we can see as we walk through the streets in Google Earth and integrated street views. Tech Crunch says ..trees are obviously a hugely important part of the Earth. To get them into Google Earth, the search giant has made 3D models of over 50 different species of trees. And they’ve included over 80 million of them in various places around the world including Athens, Berlin, Chicago, New York City, San Francisco, and Tokyo. The other big addition to this latest version of Google Earth is Integrated Street View. To be clear, Google has had a form of Street View in Google Earth since 2008, but now it’s fully a part of the experience. This means that you can go all the way from space, right down to Street View seamlessly. Check the embedded video to know more about Google Earth 6 features This article titled,Google Earth 6–It’s All About Trees & Better Street View, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• You guys are harsh.

  - by Ratman21

  Tough crowd around here it seems.   Let’s get down to the issues. First: spelling…I do not understand how there can be miss-spelled words, as I use spell check (MS Word) and cut and paste my post in to the blog. As to being defensive or complaining. Hmm as I said this is a vent for my frustrations as well letting others know they are not a lone, in Job less land. Warning, warning, warning, complaint coming. I have been out of work for 18 months now. I have gone in person to sites, emailed and phoned places for work (I am thinking of getting a sign with my resume and walking up and down the main drag until, I get a job). So forgive me if I seem a little frustrated in my post. Now one thing some one pointed out really bugs me. The person called me a Holy Roller and made a comment that this is keeping me from a job.  What! I am born again Christian and not a Holy Roller. What I have put on my web sites about my faith is staying!   Oh my web site is http://beingscottnewman.webs.com/ and my resume is on the home page (and has been since I started the site).

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