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• excluding a column in csv file with regex

  - by JPro

  Is there any way to exclude/delete/replace one field from a csv file with some regexp in notepad++? I have a csv file with some data like this: '1','data1','data2','data3','data4','data5','data6','data7','data8','data9', 'data10','data11','data12','data13','data14','data15','data16','data17','data18', 'data19','data20','data21','data22','data23','\'data24 with some commas, here and there and some "double quotes", and fullstops.','data25','data26' The only problem I am facing is with data24 WHERE I encounter \' and then "" and some wild characters like , and .. This is particularly fixed at 24 field. For the purpose of clarity, I have entered a newline here. But the entire text above is in juts one line. Any ideas on how to solve? Thanks.

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• Released object crashes app

  - by John Smith

  I am using objective-C++ (+Boost) for iPhone development. I am in a rather tight loop and need to allocate and release a certain object. The code is something like this. for (int i=0;i<100;i++) { opt = [[FObj alloc] init]; //do stuff with opt [opt release]; } The FObj object is something like @interface FObj MyCPPObj * cppobj; @end In the implementation of FObj there is a dealloc method: -(void) dealloc { delete cppobj; //previously allocated with 'new' [super dealloc]; } I am afraid that if i don't release then the 'MyCPPObj's will just pile up. But releasing makes the app crash after the first loop. What am I doing wrong? Or perhaps should I make cppobj and boost::shared_ptr? (do boost shared pointers automatically release their objects when an objective-C++ object is deleted?)

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• Most efficient way to maintain a 'set' in SQL Server?

  - by SEVEN YEAR LIBERAL ARTS DEGREE

  I have ~2 million rows or so of data, each row with an artificial PK, and two Id fields (so: PK, ID1, ID2). I have a unique constraint (and index) on ID1+ID2. I get two sorts of updates, both with a distinct ID1 per update. 100-1000 rows of all-new data (ID1 is new) 100-1000 rows of largely, but not necessarily completely overlapping data (ID1 already exists, maybe new ID1+ID2 pairs) What's the most efficient way to maintain this 'set'? Here are the options as I see them: Delete all the rows with ID1, insert all the new rows (yikes) Query all the existing rows from the set of new data ID1+ID2, only insert the new rows Insert all the new rows, ignore inserts that trigger unique constraint violations Any thoughts?

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• TFS: how to change custom field allowed values

  - by Budda

  I have my custom field of string type with predefined set of values: "1 - Cool", "2 - Good", "3 - Average",... Now it is necessary to remove "2 - Good" value and rename "3 - Average" into "2 - Average". I see easy solution: just delete 2 existing "2 - Good" and "3 - Average" and create the new "2 - Average". Question: Q1: What will happens with issues that contain values to be deleted? Probably, system won't accept such work item change? Q2: What is a good approach to do what I need? Thanks a lot! Any thoughts are welcome!

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• How can I insert a line at the beginning of a file with Perl's Tie::File?

  - by thebourneid

  I'm trying to insert/add a line 'COMMENT DUMMY' at the beginnig of a file as a first row if /PATTERN/ not found. I know how to do this with OPEN CLOSE function. Probably after reading the file it should look something like this: open F, ">", $fn or die "could not open file: $!"; ; print F "COMMENT DUMMY\n", @array; close F; But I have a need to implement this with the use of the Tie::File function and don't know how. use strict; use warnings; use Tie::File; my $fn = 'test.txt'; tie my @lines, 'Tie::File', $fn or die "could not tie file: $!"; untie @lines;

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• Comma separated values in a database field

  - by John Doe

  I have a products table. Each row in that table corresponds to a single product and it's identified by a unique Id. Now each product can have multiple "codes" associated with that product. For example: Id | Code ---------------------- 0001 | IN,ON,ME,OH 0002 | ON,VI,AC,ZO 0003 | QA,PS,OO,ME What I'm trying to do is create a stored procedure so that I can pass in a codes like "ON,ME" and have it return every product that contains the "ON" or "ME" code. Since the codes are comma separated, I don't know how I can split those and search them. Is this possible using only TSQL? Edit: It's a mission critical table. I don't have the authority to change it.

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• SQL Server dynamic pivot table

  - by user972255

  In SQL Server, I have two tables TableA and TableB, based on these I need to generate a report which is kind of very complex and after doing some research I come to a conclusion that I have to go with SQL Pivot table but I dont have any idea about the SQL Pivot feature so, can anyone please help me on this. Please see the details below: Create table TableA ( ProjectID INT NOT NULL, ControlID INT NOT NULL, ControlCode Varchar(2) NOT NULL, ControlPoint Decimal NULL, ControlScore Decimal NULL, ControlValue Varchar(50) ) Sample Data ------------- ProjectID | ControlID | ControlCode | ControlPoint | ControlScore | ControlValue P001 1 A 30.44 65 Invalid P001 2 C 45.30 85 Valid Create table TableB ( ControlID INT NOT NULL, ControlChildID INT NOT NULL, ControlChildValue Varchar(200) NULL ) Sample Data ------------ ControlID | ControlChildID | ControlChildValue 1 100 Yes 1 101 No 1 102 NA 1 103 Others 2 104 Yes 2 105 SomeValue Output should be in a single row for a given ProjectID with all its Control values first & followed by child control values (based on the ControlCode (i.e.) ControlCode_Child (1, 2, 3...) and it should look like this

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• Example of user-defined integrity rule in database systems?

  - by Pavel

  Hey everyone. I'm currently preparing for my exams and would like to know some examples of user-defined integrity rule in database systems. As far as I understand, it means that I can set up certain conditions for the columns and when data is inserted it needs to fulfill these conditions. For example: if I set up a rule that an ID needs to consist of 5 integers ONLY then when I insert a row with ID which is made up of integers and some chars then it won't accept it and return an error. Could someone confirm and give me some opinion on that? Thank you very much in advance!

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• How should I set up these tables for searching?

  - by thewebguy

  My PHP site is an online store with about 5k products. Products belong to a vendor, a category, and possibly a subcategory. Each of those items has a name and the products have descriptions. The search queries we've set up work wonderfully, but tend to run pretty slow. They range between 0.20s and 30s (yes 30 seconds). We've optimized like crazy and I'm starting to think we're out of room to improve on that front, so we're caching them and that's making life a lot easier. But when they run they are still killing the server, because what appears to be all of the table locking that comes with MyISAM. So on to my question: Is there a way for us to use InnoDB (row-level locking) and still maintain FULLTEXT? Should we move our DB offsite and use a service like DB2? Is there some other search engine type software we should use instead? Any help is greatly appreciated :)

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• How to remove strings of certain lengths

  - by Macosx Iam

  So I have this array, and I want to delete strings that are 2 or 4 characters in length (strings that contain 2 or 4 characters). I am doing this method, and it doesn't work, even though logically, it SHOULD work. public static void main(String[] args) { ArrayList<String> list = new ArrayList<String>(); list.add("This"); list.add("is"); list.add("a"); list.add("test"); for (int i=0; i<list.size(); i++) { if(list.get(i).length()==2 || list.get(i).length()==4) { list.remove(i); } } } I'd like to stick to this method of doing it. Can you please give me some suggestions as to how to correct this code? The output of this code when I run it is: [is, a] Even though I want the output to be [a] because "is" is 2 characters long.

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• how to make a simple database app in android?

  - by Iakovl

  i am not an android developer, prefer C# but i want to play with andorid a bit since i have a android device, apologize in advance for it. i want to make a simple app in android with the basic CRUD functions (create, read, update and delete) while the basic option is to use SQLiteOpenHelper i've seen DAO generators (like greenDAO) that make life more simple as i see it. so the first question is what DAOgenerator to use (if it all)? next is how to properly show it, while i know i need listview i still don't figure out exactly how to bind the database to it and to the querys i'll make for proper display each time i make a new query from a "search" screen, to the main "list display" screen

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• Is there a way to customise messages produced by statements in MS SQL Query Analyzer?

  - by Scott Leis

  If I run a simple query in SQL Query Analyzer, like: SELECT * FROM TableName the Messages pane always produces a message like: (30 row(s) affected) If I run a stored procedure with many statements, the messages are useless because there's no indication of what each one relates to. So firstly: Is there a way to customise the default messages on a per-query basis? E.g. I'd like a specific query to produce a message like: TableName query produced [numRowsAffected] results. replacing [numRowsAffected] with the number that would have appeared in the default message. Secondly, is there a way to suppress the default messages on a per-query basis? E.g. I have a local variable of type TABLE, used in several statements. I don't want any message to appear for statements where I'm just deleting data from that variable before re-using it. I'm seeking solutions that work in SQL Server 8.0.

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• C# mysql one return last_insert_id

  - by Bernhard

  I am trying to create a method in which I can exequte mysql UPDATE, DELETE or INSERT query. The method must work when with an INSERT I ask or do not ask the last_insert_id(). Below is the code that I have at the moment: public int executeUID(MySqlCommand msCommand) { try { this.Open(); msCommand.Connection = this.msCon; return int.Parse(msCommand.ExecuteScalar().ToString()); } catch (MySqlException ex) { throw ex; } finally { this.Close(); } } The problem with this is is that when I use an insert query that returns a last_insert_id() the method works greatly. But when the query doesn't return an last_insert_id() the method malfunctions. How can I get this method to work?

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• Creating Oracle stored procedure that returns data

  - by user3614327

  In Firebird you can create a stored procedure that returns data an invoke it like a table passing the arguments: create or alter procedure SEL_MAS_IVA ( PCANTIDAD double precision) returns ( CANTIDAD_CONIVA double precision) as begin CANTIDAD_CONIVA = pCANTIDAD*(1.16); suspend; end select * from SEL_MAS_IVA(100) will return a single row single column (named CANTIDAD_CONIVA) relation with the value 116 This is a very simple example. The stored procedure can of course have any number of input and output parameters and do whatever it needs to return data (including multiple rows), which is accomplished by the "suspend" statement (which as it name implies, suspends the SP execution, returns data to the caller, and resumes with the next statement) How can I create such kind of stored procedures in Oracle?

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• HTML not updating?

  - by Tommy

  I have a CGI application written in C. When I POST delete data to the app from the html form, the action is correctly executed on the server but the page does not refresh after the POST. It does flicker, but displays the non-updated page. I then have to hit the browsers refresh to see the correct html page. Is this the web server? Javascript? or just a browser setting? (I am using GoAhead web server, cgi app in C, javascript, html and Fire Fox.) Any help is appreciated.

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• Sharepoint lockout

  - by user301751

  Recently a guy from our 3rd line team thought it would be funny to delete my account from AD. This has now been re-added. Everything is back to normal apart from my Access to Sharepoint sites. I am getting "The file exists. (Exception from HRESULT: 0x80070050)" Error on all sites. After some googleing I came across a guy with the same issue and it was an issue with the SID being different from my old account. Since this I deleted my account from Site Administrators and re-added. This would refresh the SID with the new one. I also check on the Content database that the site ID matched using the following transactions and the SIDs match. select s.Id, w.FullUrl from Sites s inner join Webs w on s.RootWebId = w.Id select * from UserInfo where tp_Login='domain\username' and tp_SiteID='' I am now a bit clueless.

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• How to determine, upon launch, whether the app crashed the last time it quit?

  - by enchilada

  One of the crash reporter frameworks I've found does it like this: If there exist crash reports in the ~/Library/Logs/CrashReporter folder for the app, it determines that a crash occurred before. Then it allows the user to send the developer the crash log. And the finally, it deletes those logs. It is this deletion that is bothering me. It's not acceptable to me. Maybe the user wants to look at those logs later. It is simply rude to the user to just delete his crash logs. So I'm looking for a better way to determine the crash. It doesn't really work to store the last read crash logs in the user defaults or the user data, because that would mean that if the user deletes the data and defaults (which he has a right to do whenever he or she wishes), and then launches the app, it will be detected as crashed the last time it was quit. So this doesn't work. Any ideas?

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• Using LINQ to filter rows of a matrix based on inclusion in an array

  - by Bob Feng

  I have a matrix, IEnumerable<IEnumerable<int>> matrix, for example: { {10,23,16,20,2,4}, {22,13,1,33,21,11 }, {7,19,31,12,6,22}, ... } and another array: int[] arr={ 10, 23, 16, 20} I want to filter the matrix on the condition that I group all rows of the matrix which contain the same number of elements from arr. That is to say the first row in the matrix {10,23,16,20,2,4} has 4 numbers from arr, this array should be grouped with the rest of the rows with 4 numbers from arr. better to use linq, thank you very much!

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• how to force nhibernate to set the foreign key of the child item?

  - by npeBeg

  i have a collection in the mapping: <bag name="Values" cascade="all-delete-orphan" lazy="false" inverse="true"> <key column="[TemplateId]"/> <one-to-many class="MyNamespace.Value, MyLib"/> </bag> the Value object has a foreign key [TemplateId]. both entities has their generator set to "identity". when i call session.Save() for the parent Template object, the Value objects has their [TemplateId] (the foreign key) set to zero, so an SQL exception appears. how do i forse nhibernate to set the FK value for the child items to the value of the inserted parent object?

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• How to store matrix information in MySQL?

  - by dedalo

  Hi, I'm working on an application that analizes music similarity. In order to do that I proccess audio data and store the results in txt files. For each audio file I create 2 files, 1 containing and 16 values (each value can be like this:2.7000023942731723) and the other file contains 16 rows, each row containing 16 values like the one previously shown. I'd like to store the contents of these 2 file in a table of my MySQL database. My table looks like: Name varchar(100) Author varchar (100) in order to add the content of those 2 file I think I need to use the BLOB data type: file1 blob file2 blob My question is how should I store this info in the data base? I'm working with Java where I have a double array containing the 16 values (for the file1) and a matrix containing the file2 info. Should I process the values as strings and add them to the columns in my database? Thanks

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• Is there a way to make this C# method shorter and more readable with the help of Linq?

  - by Hamish Grubijan

  The following works, but I figured - since it is all based on IEnumerable, Linq can come handy here is well. By the way, is there an equivalent to Directory.GetFiles() which would return an IEnumerable instead of the array? If it exists, then would it make the code run any faster? The last part of the question is inspired by Python language which favors lightweight generators over concrete lists. private IEnumerable<string> getFiles(string strDirectory, bool bCompressedOnly) { foreach (var strFile in Directory.GetFiles(strDirectory)) { // Don't add any existing Zip files since we don't want to delete previously compressed files. if (!bCompressedOnly || Path.GetExtension(strFile).ToLower().Equals(".zip")) { yield return strFile; } } foreach (var strDir in Directory.GetDirectories(strDirectory)) { foreach (var strFile in getFiles(strDir, bCompressedOnly)) { yield return strFile; } } }

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• Unable to Access the Dynamic control

  - by Avi

  Hello, I have created Views for Multiview dynamically . In the view control I have a Gridview control which has a checkbox control. I have a button in the main aspx page on click of which it will check(if checked or not) for all the checkbox and fetch the corresponding row from the gridview. The view is for tabbed menu. In each tab the the gridview populates the data in the runtime. Have defined the dynamic control in Page_PreInit. I'm not able to access the checkbox . How would I achieve this . Thanks

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• limiting the rate of emails using python

  - by Ali

  I have a python script which reads email addresses from a database for a particular date, example today, and sends out an email message to them one by one. It reads data from MySQL using the MySQLdb module and stores all results in a dictionary and sends out emails using : rows = cursor.fetchall () #All email addresses returned that are supposed to go out on todays date. for row is rows: #send email However, my hosting service only lets me send out 500 emails per hour. How can I limit my script from making sure only 500 emails are sent in an hour and then to check the database if more emails are left for today or not and then to send them in the next hour. The script is activated using a cron job.

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• MySQL: Return grouped fields where the group is not empty, effeciently

  - by Ryan Badour

  In one statement I'm trying to group rows of one table by joining to another table. I want to only get grouped rows where their grouped result is not empty. Ex. Items and Categories SELECT Category.id FROM Item, Category WHERE Category.id = Item.categoryId GROUP BY Category.id HAVING COUNT(Item.id) > 0 The above query gives me the results that I want but this is slow, since it has to count all the rows grouped by Category.id. What's a more effecient way? I was trying to do a Group By LIMIT to only retrieve one row per group. But my attempts failed horribly. Any idea how I can do this? Thanks

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• Why I should use an N-Tier Approach When using an SqlDatasource is ALOT EASIER ?

  - by The_AlienCoder

  When it comes to web development I have always tried to work SMART not HARD. So for along time My Aproach to interacting with databases in my AspNet projects has been this : 1) Create my stored procedures 2) Drag an SQLDatasource control on my aspx page 3) Bind a DataList Control to my SQLDatasource 4) Insert, Update & Delete by using my Datalist or programmatically using built in SQLDatasource methods e.g MySqlDataSource.InsertParameters["author"].DefaultValue = TextBox1.Text; MySqlDataSource.Insert(); Recently however I got a relatively easy web project. So I decided to employ a 3-tier Model...But I got exhausted halfway and just didnt seem worth it ! It seemed like I was working too HARD for a project that could have been easily accomplished by a couple of SqlDataSource Controls. So Why Is the N-Tier Model better than my Approach? Has it anything to do with performance? What are the advantages of the ObjectDataSource control over the SqlDataSource Control?

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