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• How can I search for numbers in a varchar column

  - by dave

  I've got a simple nvarchar(25) column in an SQL database table. Most of the time, this field should contain alphanumeric text. However, due to operator error, there are many instances where it contains only a number. Can I do a simple search in SQL to identify these cases? That is, determine which rows in the table contain only digits in this column. As an extension, could I also search for those column values which contain only digits and a space and/or slash. In other languages (eg. Perl, Java) a regular expression would resolve this quickly and easily. But I haven't been able to find the equivalent in SQL.

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• Scroll bar not maintaining its position in ListView (ASP.net)

  - by AJ

  Hi I have a listview inside a DIV which shows the scroll bars. At one time, let's say, 10 rows can be seen. I scroll down and click Edit on 25 row. To my surprise, the scroll goes to the first row (although if I go back to 25th row, the row is in edit mode) My issue, how I can make sure that the scroll bar maintains its position to 25th row after clicking on Edit button? Please advise. Thanks AJ .StopScroll1{ Z-INDEX: 20; POSITION: relative;left:-1px; TOP: expression(document.getElementById("divGrid1").scrollTop); }        ..... .....

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• Why is .NET faster than C++ in this case?

  - by acidzombie24

  -edit- I LOVE SLaks comment. "The amount of misinformation in these answers is staggering." :D Calm down guys. Pretty much all of you were wrong. I DID make optimizations. It turns out whatever optimizations I made wasn't good enough. I ran the code in GCC using gettimeofday (I'll paste code below) and used g++ -O2 file.cpp and got slightly faster results then C#. Maybe MS didn't create the optimizations needed in this specific case but after downloading and installing mingw I was tested and found the speed to be near identical. Justicle Seems to be right. I could have sworn I use clock on my PC and used that to count and found it was slower but problem solved. C++ speed isn't almost twice as slower in the MS compiler. When my friend informed me of this I couldn't believe it. So I took his code and put some timers onto it. Instead of Boo I used C#. I constantly got faster results in C#. Why? The .NET version was nearly half the time no matter what number I used. C++ version: #include <iostream> #include <stdio.h> #include <intrin.h> #include <windows.h> using namespace std; int fib(int n) { if (n < 2) return n; return fib(n - 1) + fib(n - 2); } int main() { __int64 time = 0xFFFFFFFF; while (1) { int n; //cin >> n; n = 41; if (n < 0) break; __int64 start = __rdtsc(); int res = fib(n); __int64 end = __rdtsc(); cout << res << endl; cout << (float)(end-start)/1000000<<endl; break; } return 0; } C# version: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; using System.ComponentModel; using System.Threading; using System.IO; using System.Diagnostics; namespace fibCSTest { class Program { static int fib(int n) { if (n < 2)return n; return fib(n - 1) + fib(n - 2); } static void Main(string[] args) { //var sw = new Stopwatch(); //var timer = new PAB.HiPerfTimer(); var timer = new Stopwatch(); while (true) { int n; //cin >> n; n = 41; if (n < 0) break; timer.Start(); int res = fib(n); timer.Stop(); Console.WriteLine(res); Console.WriteLine(timer.ElapsedMilliseconds); break; } } } } GCC version: #include <iostream> #include <stdio.h> #include <sys/time.h> using namespace std; int fib(int n) { if (n < 2) return n; return fib(n - 1) + fib(n - 2); } int main() { timeval start, end; while (1) { int n; //cin >> n; n = 41; if (n < 0) break; gettimeofday(&start, 0); int res = fib(n); gettimeofday(&end, 0); int sec = end.tv_sec - start.tv_sec; int usec = end.tv_usec - start.tv_usec; cout << res << endl; cout << sec << " " << usec <<endl; break; } return 0; }

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• How can I do a partial update (i.e., get isolated changesets) from subversion with subclipse?

  - by Ingvald

  If a file is committed several times with various changes, how can I fetch one change at a time, i.e., one changeset at a time? I use eclipse, subversion, and subclipse, and I can't change the former two for the time being (or the MS platform..). In my list/ overview a file seems to be listed only in the latest relevant changeset even if all changesets are listed. So an earlier changeset doesn't necessarily show the full set of files in the original commit, nor the original diff for a file in a commit. Update: I'm thinking about using changesets for simplified peer review, so I'd like the partial update represented for all the files commited in one changeset. It's easy to get diffs and specific revisions for specific files in eclipse, but I'd like to step through all the changes in one specific commit/ changeset in a practical manner.

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• not output exception stack trace in EUnit

  - by hpyhacking

  I'm write a test with EUnit, but not anything exception detail output in console. exp_test() -> ?assertEqual(0, 1/0). Run this module:exp_test() in the Erlang Shell output following ** exception error: bad argument in an arithmetic expression in function exp_test:'-exp_test/0-fun-0-'/1 (src/test/eunit/xxx_test.erl, line 8) But in EUnit output following > eunit:test(xxx). > xxx_test: exp_test...*failed* ::badarith EUnit not output anything exception trace info Im trying the verbose config in eunit, but no effect. I want to output some exception detail in eunit test result. Thanks~

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• Shrink database after removing extra data

  - by Sergey Osypchuk

  We have a need to fit database in 4G in order to use ms sql express edition. I started from 7G database, and found a lot of not needed records, and deleted them. After Shrink database size is 4.6G, and 748MB is free (according to database properties). However, when i execute exec sp_spaceused i am having interesting results: DatabaseName Database_size unallocation space xxxxxx 4726.50 MB 765.42 MB Reserved Data index_size unused 3899472 KB 1608776 KB 1448400 KB 842296 KB Any ideas, how can i bite at least some of this unused space? Also I know table, which occupied it. update: is it worth to try to rebuild table indexes? ALTER INDEX ALL ON Production.Product REBUILD

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• what causes the .NET SerialPort class DataReceived event to fire?

  - by Klay

  I understand from the MSDN docs that the event DataReceived will not necessarily fire once per byte. But does anyone know what exactly is the mechanism that causes the event to fire? Does the receipt of each byte restart a timer that has to reach, say 10 ms between bytes, before the event fires? I ask because I'm trying to write an app that reads XML data coming in from a serial port. Because my laptop has no serial ports, I use a virtual serial port emulator. (I know, I know--I can't do anything about it ATM). When I pass data through the emulated port to my app, the event fires once for each XML record (about 1500 bytes). Perfect. But when a colleague at another office tries it with two computers connected by an actual cable, the DataReceived event fires repeatedly, after every 10 or so bytes of XML, which totally throws off the app.

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• Pros and Cons of Different macro function / inline methods in C

  - by Robert S. Barnes

  According to the C FAQ, there are basically 3 practical methods for "inlining" code in C: #define MACRO(arg1, arg2) do { \ /* declarations */ \ stmt1; \ stmt2; \ /* ... */ \ } while(0) /* (no trailing ; ) */ or #define FUNC(arg1, arg2) (expr1, expr2, expr3) To clarify this one, the arguments are used in the expressions, and the comma operator returns the value of the last expression. or using the inline declaration which is supported as an extension to gcc and in the c99 standard. The do { ... } while (0) method is widely used in the Linux kernel, but I haven't encountered the other two methods very often if at all. I'm referring specifically to multi-statement "functions", not single statement ones like MAX or MIN. What are the pros and cons of each method, and why would you choose one over the other in various situations?

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• Daily/Weekly/Monthly Record Count Search via StoredProcedure

  - by user270960

  Using MS SQL Server.I have made a Stored Procedure naming "SP_Get_CallsLogged". I have a table named "TRN_Call", and it has one column named "CallTime" which is a DateTime. I have a web-page in my application where the User enters:- 1.StartDate (DateTime) 2.EndDate (DateTime) 3.Period(Daily/Weekly/Monthly) (varchar) (from DropDownList) I want to get the Record Count of those calls in my table *TRN_Call* on the basis of the specified Period(Daily/Weekly/Monthly) selected by user in the DropDownList. e.g. StartDate ='1/18/2010 11:10:46 AM' EndDate ='1/25/2010 01:10:46 AM' Period =Daily So the record count between these above mentioned dates(StartDate+EndDate) should come in a manner so that I can refer to those counts separately i.e. the following:- Date 1/18/2010 Records Found 5 Date 1/19/2010 Records Found 50 Date 1/20/2010 Records Found 15 Date 1/21/2010 Records Found 32 Date 1/22/2010 Records Found 12 Date 1/23/2010 Records Found 15 Date 1/24/2010 Records Found 17 Date 1/25/2010 Records Found 32 and send those Counts to the Web Application so that these counts could be listed then in the Crystal Reports.

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• gdb: SIGTRAP on std::string::c_str() call

  - by sheepsimulator

  So I've been trying to use gdb to return the value of a string I have by calling > print <member variable name>.c_str() But everytime I do so, I get this: Program received signal SIGTRAP, Trace/breakpoint trap. <some address> in std::string::c_str() from /usr/lib/libstdc++.so.6 GDB remains in the frame where the signal was received. To change this behavior use "set unwindonsignal on" Evaluation of the expression containing the function (std::string::c_str() const) will be abandoned. Two questions: Why/how is the standard library throwing SIGTRAP? I checked basic_string.h and c_str() is defined as: const _CharT* c_str() const { return _M_data(); } I don't see any SIGTRAP-throwing here... is there a way to get around this SIGTRAP? How can I read the text value of the std::string out (without getting some crazy extension library) in gdb?

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• What's the point of lambda in scheme?

  - by incrediman

  I am learning scheme. I know how to use both lambda and let expressions. However I'm struggling to figure out what the point is of using lambda. Can't you do everything with let that you can with lambda? It would be especially helpful to see an example of a situation where a lambda expression is a better choice than let. One other thing - are there also situations where let is more useful than lambda? If so such an example would be nice as well. Thanks!

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• SQL Server T-SQL statement to replace/delete sub-strings

  - by StefanE

  Hi, I have a table with 6 columns containing HTML content with some markups in it and now when moving to a new designed site most of this HTML code has to be deleted. More or less all tags except <B> and </B>. Is there a nice way of doing this, identify all tags end delete them within the data? I'm sure there are no < symbols in the test so a regular expression would maybe work? My alternative is to fetch every row, process it and update the database but I'm guessing this is possible to do in T-SQL directly. My server is an MSSQL 2008 and is located in a hosted environment but I can fetch a local copy if needed. Thanks, Stefan

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• to_date in SQL Server 2005

  - by Chin

  Does any one know how I would have to change the following to work with ms sql? WHERE registrationDate between to_date ('2003/01/01', 'yyyy/mm/dd') AND to_date ('2003/12/31', 'yyyy/mm/dd'); What I have read implies I would have to construct it using DATEPART() which could become very long winded. Especially when the goal would be to compare on dates which I receive in the following format "2003-12-30 10:07:42". It would be nice to pass them off to the database as is. Any pointers appreciated.

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• AVG time spent on multiple rows SQL-server?

  - by seo20

  I have a table tblSequence with 3 cols in MS SQL: ID, IP, [Timestamp] Content could look like this: ID IP [Timestamp] -------------------------------------------------- 4347 62.107.95.103 2010-05-24 09:27:50.470 4346 62.107.95.103 2010-05-24 09:27:45.547 4345 62.107.95.103 2010-05-24 09:27:36.940 4344 62.107.95.103 2010-05-24 09:27:29.347 4343 62.107.95.103 2010-05-24 09:27:12.080 ID is unique, there can be n number of IP's. Would like to calculate the average time spent per IP. in a single row Know you can do something like this: SELECT CAST(AVG(CAST(MyTable.MyDateTimeFinish - MyTable.MyDateTimeStart AS float)) AS datetime) But how on earth do I find the first and last entry of my unique IP row so I can have a start and finish time? I'M stuck. Would like to calculate the average time spent per IP. in a single row

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• Tentative date casting in tsql

  - by Tewr

  I am looking for something like TRYCAST in TSQL or an equivalent method / hack. In my case I am extracting some date data from an xml column. The following query throws "Arithmetic overflow error converting expression to data type datetime." if the piece of data found in the xml cannot be converted to datetime (in this specific case, the date is "0001-01-01" in some cases). Is there a way to detect this exception before it occurs? select [CustomerInfo].value('(//*:InceptionDate/text())[1]', 'datetime') FROM Customers An example of what I am trying to achieve in pseudocode with an imagined tsql function TRYCAST(expr, totype, defaultvalue): select TRYCAST( [CustomerInfo].value('(//*:InceptionDate/text())[1]', 'nvarchar(100)'), datetime, null) FROM Customers

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• Get all email addresses in a string with JavaScript

  - by Mickel

  So, I have this JavaScript function: ME.Utils = { RxEmail: new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i), ValidateEmail: function(email) { return ME.Utils.RxEmail.test(email); }, GetEmailAddresses: function(text) { return text.match(ME.Utils.RxEmail); }, HasEmail: function(text) { return ME.Utils.GetEmailAddresses != null; } }; ValidateEmail works very well. However, HasEmail and GetEmailAddresses is not working properly. GetEmailAdresses always returns null, except for when the string only contains an email address. In this case, GetEmailAdresses returns an array not only containing the email address, but the email address ([email protected]), just the id (test) plus some unidentified etc. etc... Can you help me figure out what's wrong in my expression?

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• Are there any other Java schedulers besides Quartz(FOSS) and Flux(Commercial)

  - by mP

  I am interested in finding out about other job scheduling packages besides Quartz and Flux. Given the plethora of web frameworks i find it perculiar that there is really only one scheduler. Are there others that perhaps are very much unknown/unpopular ? Spring Batch Not really a scheduling solution but rather a batch job coordinator etc. http://static.springsource.org/spring-batch/faq.html#schedulers How does Spring Batch differ from Quartz? Is there a place for them both in a solution? Spring Batch and Quartz have different goals. Spring Batch provides functionality for processing large volumes of data and Quartz provides functionality for scheduling tasks. So Quartz could complement Spring Batch, but are not excluding technologies. A common combination would be to use Quartz as a trigger for a Spring Batch job using a Cron expression and the Spring Core convenience SchedulerFactoryBean .

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• Synclock a section of code while waiting for ShowDialog to return

  - by clawson

  I'm having trouble working out how to lock my application out of a section of code while it waits for a response from an external program. I've used Synclock on a section of code with the Me object in the expression. In this Synclock I call an overridden ShowDialog method of a dialog box, which has a timeout parameter, but does return the value from the underlying ShowDialog function call ,once the timer is setup. Works like this. SyncLock Me Dim frmDlgWithTimeout As New frmDlgWithTimeout ' dialog box with overridden ShowDialog ' Dim res As DialogResult = frmDlgWithTimeout.ShowDialog(10 * 1000) ' 10 sec timeout ' End SyncLock Now, external programs may raise events that bring my application to this Synclock but it doesn't prevent it from entering it, even though the ShowDialog function hasn't returned a value (and hence what I thought would keep the section of code locked). There is only one instance of the object that is used for lock in the program. Your help is greatly appreciated.

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• How do I seperate Punctuations in a sentence with a space between each phrase and punctuation in C++

  - by Yadollah

  I want to write a program in c++ that get a sentence and insert a space between each word and punctuation in it! in perl this is done with this expression: sed -e "s/,\([^0-9]\)/ , \1/g" -e "s/\.\([^0-9]\)/ . \1/g" -e 's/\.[ ]*$/ ./g' -e "s/\'/ \' /g" -e 's/?/ ?/g' -e 's/\`\`/ `` /g' -e "s/\' \'/''/g" -e 's/(/ ( /g' -e 's/)/ ) /g' -e 's/ \. \([^$]\)/. \1/g' -e "s/\' s/\'s/g" -e "s/\"\([^\"]*\)\"/\" \1 \"/g" $1 | sed -e "s/\"\([^\"]*\)\"/\`\`\1''/g" But I don't khow how i should do this in c++! for example: should convert a "The question now: Can he act more like hard-charging Teddy Roosevelt." must be converted to "The question now : Can he act more like hard-charging Teddy Roosevelt ." So a punctuation such as '-' or for example a '.' in "No." should not spacing in a sentence, but other punctuation that don't rely on a word or a phrase should be spaced.

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• NHibernate Named Query Parameter Numbering @p1 @p2 etc

  - by IanT8

  A colleague recently ran into a problem where he was passing in a single date parameter to a named query. In the query, the parameter was being used twice, once in an expression and once in a GROUP BY clause. Much to our surprise, we discovered that NHibernate used two variables and sent the single named parameter in twice, as @p1 and @p2. This behaviour caused SQL to fail the query, with the usual "a column in the select clause is not in the group by clause" (I paraphrase ofcourse). Is this behaviour normal? Can it be changed? Seems to me that if you have a parameter name like :startDate, NHibernate only needs to pass in @p1 no matter how many times you might refer to :startDate in the query. Any comments? The problem was worked around by using another sub-query to overcome the SQL parsing error.

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• F# - This code isn't compiling for me

  - by stacker

  This code isn't compiling for me: let countDown = [5L .. -1L .. 0L];; I have a book that says it should return this: val countDown : int list = [5L; 4L; 3L; 2L; 1L; 0L] Compiler Error: Program.fs(42,24): error FS0010: Unexpected character '-' in expression > > let countDown = [5L .. -1L .. 0L];; let countDown = [5L .. -1L .. 0L];; -----------------------^

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• Typecast to a type from just the string representation of the type name

  - by Water Cooler v2

  sTypeName = ... //do some string stuff here to get the name of the type /* The Assembly.CreateInstance function returns a type of System.object. I want to type cast it to the type whose name is sTypeName. assembly.CreateInstance(sTypeName) So, in effect I want to do something like: */ assembly.CreateInstance(sTypeName) as Type.GetType(sTypeName); How do I do that? And, what do I take on the left side of the assignment expression, assuming this is C# 2.0. I don't have the var keyword.

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• Is Alpha Five Version 10 really all that its reported to be?

  - by Gary B2312321321

  I came across this RDMS via the advert on stackoverflow. Seems to be in the vein of MS Access / Filemaker / Apex database devlopment tools but focused on web based applications. It quotes rave reviews from EWeek and a favourable mention from Dr Dobbs regarding its ability to create AJAX web applications without coding. The Eweek review, apparently written by an ASP.NET programmer, goes on to proclaim the ease at which apps can be extended using the inbuilt XBasic language and how custom javascript can easily be added without wading through code. Has anyone here built a web app with Alpha 5? Does anyone have comments on the development process, the speed of it or limitations they encountered along the way? To me it seems Oracle APEX comes closest to the feature set, has anyone programmed in both and have any comments?

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• MSXML2.ServerXMLHTTP.4.0 Source?

  - by Frank V

  Where does the object "MSXML2.ServerXMLHTTP.4.0" come from? Which install package? I'm attempting to do the following: Set oXMLHTTP = CreateObject("MSXML2.ServerXMLHTTP.4.0") This attempt fails on my development machine (no object is returned) but it is successful on my collage's development machine. Obviously he has something installed that I don't or vice versa but where does this object, dll, etc come from? What would I need to install to get this call to work. For the record, changing the object to a different version isn't an option because code that this depends on was tested for several days against this specific version. We'd have to go back and test again... To expand on this question, how can I tell which version of MS XML is currently installed?

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• Replacement for Azure SDK Powershell commandlets for deployments

  - by Frank Rosario

  Hi, We've run into an issue with the New-Deployment Azure Powershell commandlet timing out; we've put in a bug report with MS. While they gave us an explanation for it (the path and timeout threshold used to upload through commandlets is different then what's used by the web portal); they don't have a fix for us. We need to get this running so we can automate our build deployments, so we're looking into developing a custom commandlet to replace New-Deployment using the Azure SDK; hoping this path will not have the timeout issues the commandlet did. But before we go down that route; are there any other scriptable tools I can use to replace the New-Deployment functionality? I looked at Cloudberry for Windows Azure; but that doesn't have a scriptable interface yet. Any constructive input is greatly appreciated.

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