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  • Inserting multiple types into an SQLite database with Python

    - by mankoff
    I'm trying to create an SQLite 3 database from Python. I have a few types I'd like to insert into each record: A float, and then 3 groups of n floats, currently a tuple but could be an array or list.. I'm not well-enough versed in Python to understand all the differences. My problem is the INSERT statement. DAS = 12345 lats = (42,43,44,45) lons = (10,11,12,13) times = (1,2,3,4,5,6,7,8,9) import sqlite3 connection = sqlite3.connect("test.db") cursor = connection.cursor() cursor.execute( "create table foo(DAS LONG PRIMARY KEY,lats real(4),lons real(4), times real(9) )" ) I'm not sure what comes next. Something along the lines of: cmd = 'INSERT into foo values (?,?,?,?), ..." cursor.execute(cmd) How should I best build the SQL insert command given this data?

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  • ASP.NET HTTPHandler not throwing exception when one is expected

    - by josephj1989
    I have an HttpHandler class (implements IHttphandler) where the path defined for the handler in web.config is *.jpg. I am requesting a Jpg image in my page. Within the HTTP Handler I am writing to a file in the filesystem. By mistake I was trying to write to a non existant directory. This should have thrown an exception but the execution simply proceeds.Ofcourse no file is written. But if I give a proper directory the file is written correctly.Is there anything special about HttpHandler Exceptions. See part of the code public void ProcessRequest(HttpContext context){ File.WriteAllLines(context.Request.ApplicationPath+@"\"+"resul.log",new string[]{"Entered JPG Handler"}); If I put a breakpoint on the File.WriteAllLines statement and then step over it I can see an exception occurring.

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  • Implement Exception Handling in ASP.NET C# Project

    - by Shrewd Demon
    hi, I have an application that has many tiers. as in, i have... Presentation Layer (PL) - contains all the html My Codes Layer (CL) - has all my code Entity Layer (EL) - has all the container entities Business Logic Layer (BLL) - has the necessary business logic Data Logic Layer (DLL) - any logic against data Data Access Layer (DAL) - one that accesses data from the database Now i want to provide error handling in my DLL since it is responsible for executing statement like ExecureScalar and all.... And i am confused as to how to go about it...i mean do i catch the error in the DLL and throw it back to the BLL and from there throw it back to my code or what.... can any one please help me how do i implement a clean and easy error handling techinque help you be really appreciated. Thank you.

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  • Get records from Access table

    - by chianta
    On Access 2010 I need to use VBA to get the records in a table, process them and put them in a new table. Could you tell me how can I do? Is there a way similar to C # to put everything into a datatable the result of a query? I found an example on how to get the data. http://pastebin.com/bCtg20jp But it always fails on the first statement "ADODB.Recordset". I went to see the included libraries and library that uses ADODB is already included "Microsoft Access 14.0 Object Library". Thanks

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  • NHibernate: insert multiple items at once

    - by Gart
    Hello, all! I am learning NHibernate now and I would like to know is it possible to save multiple objects to database in one operation. For example, consider this test code private static void SaveTestBillNamesInSession(ISession session, params string[] names) { var bills = from name in names select new Bill { Name = name, DateRegistered = DateTime.Now, }; foreach (var bill in bills) session.SaveOrUpdate(bill); } This loop here generates many INSERT statements which may be sub-optimal in SQL Server 2008 which allows to include multiple data rows in one INSERT statement. Is it possible to rewrite this code to make use of this functionality - insert all the data in one operation?

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  • WCF passing data types

    - by Jonathan D
    writing a WCF soap server which is going to be working with a flex client. what the best way of passing the result of a sql select statement? with pro's and con's would be good :D I know I can define data contracts, however defining lots of these for every sql statment is going to take a long time. i'm doing this with SQL server 2000, VS2010 and flex sdk 3/4. apart form that there isn't really that many other requirements that couldn't be moved at present. Thanks for the help

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  • How to insert bulk data into mysql table from asp.net at once.

    - by kranthi
    Hi, I have a requirement that I need to read an excel sheet using asp.net/C# and insert all the records into mysql table.The excel sheet consists of around 2000 rows and 50 columns. Currently,upon reading the excel records ,I am inserting the records one by one using a prepare statement into mysql table.But its taking around 70 secs to do so because of the huge data. I've also thought of creating a new datarow, assigning values to each cell,adding the resulting datarow to datatable and finally calling dataadapter.update(...).But it seems to be complex because I got around 50 columns and hence I'll have to assign 50 values to the datarow. Could someone please suggest if there is an alternate to improve the performance of the insertion? Thanks

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  • MySQL: updating a row and deleting the original in case it becomes a duplicate

    - by Silvio Donnini
    I have a simple table made up of two columns: col_A and col_B. The primary key is defined over both. I need to update some rows and assign to col_A values that may generate duplicates, for example: UPDATE `table` SET `col_A` = 66 WHERE `col_B` = 70 This statement sometimes yields a duplicate key error. I don't want to simply ignore the error with UPDATE IGNORE, because then the rows that generate the error would remain unchanged. Instead, I want them to be deleted when they would conflict with another row after they have been updated I'd like to write something like: UPDATE `table` SET `col_A` = 66 WHERE `col_B` = 70 ON DUPLICATE KEY REPLACE which unfortunately isn't legal in SQL, so I need help finding another way around. Also, I'm using PHP and could consider a hybrid solution (i.e. part query part php code), but keep in mind that I have to perform this updating operation many millions of times. thanks for your attention, Silvio Reminder: UPDATE's syntax has problems with joins with the same table that is being updated

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  • What SQL is being sent from a SqlCommand object

    - by Justin808
    I have a SqlCommand object on my c# based asp.net page. The SQL and the passed parameters are working the majority of the time. I have one case that is not working, I get the following error: String or binary data would be truncated. The statement has been terminated. I understand the error and but all the columns in the database should be long enough to hold everything being sent. My questions, Is there a way to see what the actual SQL being sent to the database is from SqlCommand object? I would like to be able to email the SQL when an error occurs. Thanks, Justin

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  • mysql join Two tables to get records

    - by Saranya
    Hai guys, I have two tables Incharge and property. My property table has three fields 1stIncharge,2ndIncharge and 3rdIncharge. InchargeId is set as foreign key for all the above fields in the property table.. How to write a select statement that joins both the table.. I ve tried a bit but no result select P.Id,P.Name,P.1stIncharge,P.2ndIncharge,P.3rdIncharge,I.Id from Property as P join Incharge as I where (\\How to give condition here \\) Guys 3 fields P.1stIncharge, P.2ndIncharge, P.3rdIncharge has foreign key I.Id Edit: select P.Id,P.Name,P.1stIncharge,P.2ndIncharge,P.3rdIncharge,I1.Id from Property as P inner join Incharge as I1 on I1.Id=P.1stIncharge inner join Incharge as I2 on I2.Id=P.2ndIncharge inner join Incharge as I3 on I3.Id=P.3rdIncharge and this query working

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  • jQuery exclude elements with certain class in selector

    - by Alex Crooks
    I want to setup a click event trigger in jQuery for certain anchor tags. I want to open certain links in a new tab while ignoring ones with a certain class (before you ask I cannot put classes on the links I am trying to catch as they come from a CMS). I want to exclude links with class "button" OR "generic_link" I have tried $(".content_box a[class!=button]").click(function (e) { e.preventDefault(); window.open($(this).attr('href')); }); But that doesn't seem to work, also how do I do an OR statement to include "generic_link" in the exclusion? Many thanks

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  • NHibernate HQL logic problem

    - by Jon
    Hi I'm trying to write an NHibernate HQL query that makes use of parenthesis in the where clause. However, the HQL parser seems to be ignoring my parenthesis, thus changing the meaning of my statement. Can anyone shed any light on the matter? The following HQL query: from WebUser u left join fetch u.WebUserProfile left join fetch u.CommunicationPreferences where (u.CommunicationPreferences.Email = 0 and u.SyncDate is not null) or u.DateDeleted is not null translates to: from WebUser webuser0_ left outer join WebUserProfile webuserpro1_ on webuser0_.UserId = webuserpro1_.WebUserId left outer join WebUserCommunicationPreferences communicat2_ on webuser0_.UserId = communicat2_.UserId where communicat2_.Email = 0 and (webuser0_.SyncDate is not null) or webuser0_.DateDeleted is not null Thanks Jon

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  • How can I make Excel's MIN function ignore zeroes in a set?

    - by mfg
    In Excel, I have the following formula =(MIN(H69,H52,H35,H18)*(1/H18))*10 that is supposed to return the MIN of a range, and divide it by the current cell (*(1/H18) ), then multiply by 10. I am having difficulty with adding a type of NULLIF statement. I want to be able to have (the possibility for) blank rows, and have the MIN function ignore zero/blank fields while selecting the next lowest value (all are between 1.0-0.1). Is there a modifier i can apply to the MIN function to make it not compare zeroes in the MIN set? Is there a better funtion than MIN to use? This is to prevent the following situation: users will need to eliminate fields that are zeros from the form, theres 2 formula edits per entry, averaging 4 entries per use, so 8 possible errors per form use...

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  • Handle mysql restart in SQLAlchemy

    - by wRAR
    My Pylons app uses local MySQL server via SQLAlchemy and python-MySQLdb. When the server is restarted, open pooled connections are apparently closed, but the application doesn't know about this and apparently when it tries to use such connection it receives "MySQL server has gone away": File '/usr/lib/pymodules/python2.6/sqlalchemy/engine/default.py', line 277 in do_execute cursor.execute(statement, parameters) File '/usr/lib/pymodules/python2.6/MySQLdb/cursors.py', line 166 in execute self.errorhandler(self, exc, value) File '/usr/lib/pymodules/python2.6/MySQLdb/connections.py', line 35 in defaulterrorhandler raise errorclass, errorvalue OperationalError: (OperationalError) (2006, 'MySQL server has gone away') This exception is not caught anywhere so it bubbles up to the user. If I should handle this exception somewhere in my code, please show the place for such code in a Pylons WSGI app. Or maybe there is a solution in SA itself?

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  • How do I maintain coherency between model and view-model in MVVM pattern?

    - by Mike Garrett
    Problem Statement I'm writing a very basic WPF application to alter the contents of a configuration file. The data format is an XML file with a schema. I want to use it as a learning project for MVVM, so I have duly divided the code into Model: C# classes auto-generated from xsd.exe View-Model: View-friendly representation of the Model. View: Xaml and empty code behind I understand how the View-Model can make View-binding a breeze. However, doesn't that leave the View-Model <- Model semantics very awkward? Xsd.exe generates C# classes with arrays for multiple XML elements. However, at the V-VM level you need Observable Collections. Questions: Does this really mean I have to keep two completely different collection types representing the same data in coherence? What are the best practices for maintaining coherence between the Model and the View-Model?

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  • How to write an error message from an BCP operation to a log file and stop processing the batch file

    - by Newbie
    I have a BCP operation in a batch command file. when there is an error in the BCP Operation I need to stop the processing and write the err msg in the log file I've used to -e option to write the error message during a BCP operation to a err file. The err file is getting created in the location but does not contain any error message written to it. My BCP statement is like this. BCP DbName.dbo.tableName In FileLocation -e Errorfile -S ServerName -T -c Is there a way to get the error level and then stop the processing. Appreciate quick help.

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  • How can I set the minDate/maxDate for jQueryUI Datepicker using a string?

    - by leo
    jQueryUI Datepicker documentation states that the minDate option can be set using "a string in the current dateFormat". So I've tried the following to initialize datepickers: $("input.date").datepicker({ minDate: "01/01/2010", maxDate: "12/31/2010" }); However, this results in my datepicker having a selectable date range that goes from 11/06/2015 to 12/17/2015. I've checked the current dateformat and its mm/dd/yy, which is supposed to mean 2 digits for the month, 2 for the day, and 4 for the year, separated by slashes. I've also tried including dateFormat: "mm/dd/yy" in the inizialization statement. I've also checked the values for minDate and maxDate afterwards and they ARE being set to the values I want: 01/01/2010 and 12/31/2010. I want to be able to set min/maxDate with strings because I'm being passed these values as strings from somewhere else. Maybe someone knows why this happens and how to solve this, or a workaround to achieve this, perphaps changing the format of the date strings or something? Thanks EDIT: Using: jQuery v1.3.2 and jQuery UI v1.7.2

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  • Cross-database transactions from one SP

    - by Michael Bray
    I need to update multiple databases with a few simple SQL statement. The databases are configurared in SQL using 'Linked Servers', and the SQL versions are mixed (SQL 2008, SQL 2005, and SQL 2000). I intend to write a stored procedure in one of the databases, but I would like to do so using a transaction to make sure that each database gets updated consistently. Which of the following is the most accurate: Will a single BEGIN/COMMIT TRANSACTION work to guarantee that all statements across all databases are successful? Will I need multiple BEGIN TRANSACTIONS for each individual set of commands on a database? Are transactions even supported when updating remote databases? I would need to execute a remote SP with embedded transaction support. Note that I don't care about any kind of cross-database referential integrity; I'm just trying to update multiple databases at the same time from a single stored procedure if possible. Any other suggestions are welcome as well. Thanks!

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  • Why can one aliased C# Type not be accessed by another?

    - by jdk
    good stuff // ok to alias a List Type using AliasStringList = System.Collections.Generic.List<string>; // and ok to alias a List of Lists like this using AliasListOfStringList1 = System.Collections.Generic.List<System.Collections.Generic.List<string>>; bad stuff // However **error** to alias another alias using AliasListOfStringList2 = System.Collections.Generic.List<AliasStringList>; Produces the compile error The type or namespace name 'AliasStringList' could not be found (are you missing a using directive or an assembly reference?) Note: this is the using directive not the using statement.

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  • Printing to STDOUT and log file while removing ANSI color codes

    - by Arrieta
    I have the following functions for colorizing my screen messages: def error(string): return '\033[31;1m' + string + '\033[0m' def standout(string): return '\033[34;1m' + string + '\033[0m' I use them as follows: print error('There was a problem with the program') print "This is normal " + standout("and this stands out") I want to log the output to a file (in addition to STDOUT) WITHOUT the ANSI color codes, hopefully without having to add a second "logging" line to each print statement. The reason is that if you simply python program.py > out then the file out will have the ANSI color codes, which look terrible if you open in a plain text editor. Any advice?

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  • Problem with connection to MS SQL Server database using SSMS

    - by Charles
    I have a database on line with Godaddy (who uses SQL Server 2005). They provide basic management tools, but tell you that for more advanced tools you can connect directly using SSMS. I followed their instructions to ensure my online database will accept remote connections, and can apparently log in using SSMS with success (after giving my hostname and access data). However: When attempting to expand the "Databases" folder tree, I get the following error: Failed to retrieve data for this request. (Microsoft.SqlServer.Management.Sdk.Sfc) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server& LinkId=20476 ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) The server principal "cmitchell" is not able to access the database "3pointdb" under the current security context. (Microsoft SQL Server, Error: 916) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.4262&EvtSrc=MSSQLServer&EvtID=916&LinkId=20476

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  • conditional php help

    - by jeff
    How can I wrap this entire statement below in a condition? So If the variable $uprice = 0 then I don't want to to display any of the code below <?php if (Mage::helper('weee')->typeOfDisplay($_item, array(0, 1, 4), 'sales') && $_item- >getWeeeTaxAppliedAmount()): ?> <?php echo $this->helper('checkout')->formatPrice($_item->getCalculationPrice()+$_item->getWeeeTaxAppliedAmount()+$_item->getWeeeTaxDisposition()); ?> <?php else: ?> <?php echo $this->helper('checkout')->formatPrice($_item- >getCalculationPrice()) ?> <?php endif; ?>

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  • Using a check contraint in MySQL for controlling string length

    - by ptrn
    I'm tumbled with a problem! I've set up my first check constraint using MySQL, but unfortunately I'm having a problem. When inserting a row that should fail the test, the row is inserted anyway. The structure: CREATE TABLE user ( id INT UNSIGNED NOT NULL AUTO_INCREMENT, uname VARCHAR(10) NOT NULL, fname VARCHAR(50) NOT NULL, lname VARCHAR(50) NOT NULL, mail VARCHAR(50) NOT NULL, PRIMARY KEY (id), CHECK (LENGTH(fname) > 30) ); The insert statement: INSERT INTO user VALUES (null, 'user', 'Fname', 'Lname', '[email protected]'); The length of the string in the fname column should be too short, but it's inserted anyway. I'm pretty sure I'm missing something basic here.

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  • returning a memoryStream as a string

    - by WeNeedAnswers
    What is wrong with this statement? return new ASCIIEncoding().GetString(memoryStream.ToArray()); I know about the Dispose pattern, have checked out the underlying memoryStream and seen that there is nothing really happening in the dispose. So why shouldn't I allow one of my developers to do this. The aim is to make the code succinct and not create references that are not required, Hopefully getting the Garbage Collector to kick in soon as. Its just niggling me, I feel that the memoryStream lets the party down, when compared to what the other streams do and why they implement the IDispose. Can someone please give me a good reason not to allow the code above. I got a gut feeing about the code not being right but need some back up. :)

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  • Adding Existing Framework to Xcode (iPhone) error

    - by Urizen
    I have added the <QuartzCore/QuartzCore.h> to my Frameworks folder in my iPhone project and added the #import "<QuartzCore/QuartzCore.h>" statement at the top of a custom UIView class. However the custom UIView class gives me a "No such file or directory" compliation error in relation to the <QuartzCore/QuartzCore.h> framework. Is there something else I need to set so that the compiler can see the framework. I'm not expert on the Xcode IDE so any assistance would be extremely welcome.

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