Search Results

Search found 18566 results on 743 pages for 'query hints'.

Page 354/743 | < Previous Page | 350 351 352 353 354 355 356 357 358 359 360 361  | Next Page >

  • java.sql.SQLException: SQL logic error or missing database, SQLite, JDBC

    - by Sunil Kumar Sahoo
    Hi All, I ahve created database connection with SQLite using JDBC in java. My sql statements execute properly. But sometimes I get the following error while i use conn.commit() java.sql.SQLException: SQL logic error or missing database Can anyone please help me how to avoid this type of problem. Can anyone give me better approach of calling JDBC programs Class.forName("org.sqlite.JDBC"); conn = DriverManager.getConnection("jdbc:sqlite:/home/Data/database.db3"); conn.setAutoCommit(false); String query = "Update Chits set BlockedForChit = 0 where ServerChitID = '" + serverChitId + "' AND ChitGatewayID = '" + chitGatewayId + "'"; Statement stmt = conn.createStatement(); try { stmt.execute(query); conn.commit(); stmt.close(); stmt = null; } Thanks Sunil Kumar Sahoo

    Read the article

  • PHP - can a method return a pointer?

    - by Kerry
    I have a method in a class trying to return a pointer: <?php public function prepare( $query ) { // bla bla bla return &$this->statement; } ?> But it produces the following error: Parse error: syntax error, unexpected '&' in /home/realst34/public_html/s98_fw/classes/sql.php on line 246 This code, however, works: <?php public function prepare( $query ) { // bla bla bla $statement = &$this->statement; return $statement; } ?> Is this just the nature of PHP or am I doing something wrong?

    Read the article

  • Is functional intellisense and code browsing more beneficial than the use of dependency injection containers

    - by Gavin Howden
    This question is really based on PHP, but could be valid for other dynamically typed, interpreted languages and specifically the methods of generating code insight and object browsing in development environments. We use PHPStorm, and find intellisense invaluable, but it is provided by some limited static analysis and parsing of doc comments. Obviously this does not lend well to obtaining dependencies through a container, as the IDE has no idea of the type returned, so the developer loses out on a plethora of (in the case of our framework anyway) rich documentation provided through the doc comments. So we start to see stuff like this: $widget = $dic->YieldInstance('WidgetA', $arg1, $arg2, $arg3, $arg4...)); /** * @var $widget WidgetA */ So that code insight works. In effect the comments are tightly bound, but worse they come out of sync when code is modified but not the comments: $widget = $dic->YieldInstance('WidgetB', $arg1, $arg2, $arg3, $arg4...)); /** * @var $widget WidgetA */ Obviously the comment could be improved by referencing a Widget interface, but then we might as well use a factory and avoid the requirement for the extra typing hints in the comments, and dic complexity / boiler plating. Which is more important to the average developer, code insight / intellisense or 'nirvana' decouplement?

    Read the article

  • How to use Enum as NamedQuery parameters in JPA

    - by n002213f
    I have an Entity with a enum attribute and a couple on NamedQueries. One of these NamedQueries has a the enum attribute as a parameter i.e. SELECT m FROM Message m WHERE status = :status When i try to ru n the query i get the following error; Caused by: java.lang.IllegalArgumentException: You have attempted to set a value of type class my.package.Status for parameter status with expected type of class my.package.Status from query string SELECT m FROM Message m WHERE m.status = :status. I'm using Toplink How is this? How would i make JPA happy?

    Read the article

  • Get MySQL 5.6 Certified at a Much Reduced Price

    - by Antoinette O'Sullivan
    You have already heard the great news that you can now prove your knowledge of MySQL Server 5.6 with the new MySQL certification exams: Oracle Certified Professional, MySQL 5.6 Developer Oracle Certified Professional, MySQL 5.6 Database Administrator Until December 14th 2013, there exams are beta phase so you get a fully-fledged certification at a much reduced price; for example $50 in the United States or 39 euros in the euro zone. There is a lot of excitement around these new certifications as people ramp up to prove their expertise. Here is some information that might help you are you prepare to get MySQL 5.6 certified. Establishing What You Need to Know Your first step is to chose whether you want to take the MySQL 5.6 Developer or MySQL 5.6 Database Administrator certification. Now click on the Exam Topics tab on the corresponding certification page. You will see a list of topics that you will be tested on during the certification exam. These are the areas that you need to improve your knowledge on, if you are not already expert. Register For a Certification Exam Click on the relevant certification and then click on Register for this Exam. The Pearson VUE site will guide you through signing up for an event at a date and location to suit you. Preparing to Take an Exam For each certification, you can click on the Exam Preparation tab. This indicates the recommended training and reference material that can help you prepare to sit the exam. And why not follow the experience of others preparing to take these exams. Todd Farmer Morgan Tocker Moritz Schupp Open Source Dba's blog You could also read MySQL hints and tips from Jeremy Smyth who is part of the team writing the authentic MySQL curriculum.

    Read the article

  • Disable cache in Silverlight HttpWebRequest

    - by synergetic
    My Silverlight4 app is hosted in ASP.NET MVC 2 web application. I do web request through HttpWebRequest class but it gives back a result previously cached. How to disable this caching behavior? There are some links which talks about HttpWebRequest in .NET but Silverlight HttpWebrequest is different. Someone suggested to add unique dummy query string on every web request, but I'd prefer more elegant solution. I also tried the following, but it didn't work: _myHttpWebRequest.BeginGetRequestStream(new AsyncCallback(BeginRequest), new Guid()); In fact, by setting browser history settings it is possible to disable caching. See the following link: http://stackoverflow.com/questions/3027145/asp-net-mvc-with-sql-server-backend-returns-old-data-when-query-is-executed But asking a user to change browser settings is not an option for me.

    Read the article

  • Follow point of interest by applying torque

    - by azymm
    Given a body with an orientation angle and a point of interest or targetAngle, is there an elegant solution for keeping the body oriented towards the point of interest by applying torque or impulses? I have a naive solution working below, but the effect is pretty 'wobbly', it'll overshoot each time, slowly getting closer to the target angle - undesirable effect in my case. I'd like to find a solution that is more intelligent - that can accelerate to near the target angle then decelerate and stop right at the target angle (or within a small range). If it helps, I'm using box2d and the body is a rectangle. def gameloop(dt): targetAngle = get_target_angle() bodyAngle = get_body_angle() deltaAngle = targetAngle - bodyAngle if deltaAngle > PI: deltaAngle = targetAngle - (bodyAngle + 2.0 * PI) if deltaAngle < -PI: deltaAngle = targetAngle - (bodyAngle - 2.0 * PI) # multiply by 2, for stronger reaction deltaAngle = deltaAngle * 2.0; body.apply_torque(deltaAngle); One other thing, when body has no linear velocity, the above solution works ok. But when the body has some linear velocity, the solution above causes really wonky movement. Not sure why, but would appreciate any hints as to why that might be.

    Read the article

  • .Net opening and clossing database connections

    - by Dan
    I currently designed the data access portion of our framework so that every time a business object needed to interact with the database it would have to open a connection, invoke the data access layer (to execute the query), and then close the connection. Then if it needed to run in a transaction it would open the connection, begin the transaction, invoke the data access layer (to execute the query) and then commit the transaction, close the transaction, and finally close the connection. I did it this way with the mindset of open late and close early...but what if I needed to call other BO's to submit data in a single transaction? Is there a better way to handle opening and closing connections as well as working with transactions? I'm a rookie at architecting applications so I hope I'm not doing this wrong...any help is appreciated.

    Read the article

  • SQL's Rownumber with Linq-to-entities

    - by mariki
    I am converting my project to use EF and also want to covert stored procedures into Linq-to-entities queries. This my SQL query (simple version) that I have trouble to convert: SELECT CategoryID, Title as CategoryTitle,Description, LastProductTitle,LastProductAddedDate FROM ( SELECT C.CategoryID, C.Title,C.Description, C.Section, P.Title as LastProductTitle, P.AddedDate as LastProductAddedDate, ROW_NUMBER() OVER (PARTITION BY P.CategoryID ORDER BY P.AddedDate DESC) AS Num FROM Categories C LEFT JOIN Products P ON P.CategoryID = C.CategoryID ) OuterSelect WHERE OuterSelect.Num = 1 In words: I want to return all Categories (from Categories table) and title and date of addition of the product (from Products table) that was added last to this category. How can I achieve this using Entity frame work query? In most efficient way.

    Read the article

  • Dynamic mod_rewrite or how to plan a dynamic website

    - by Sophia Gavish
    Hi, I'm trying to make a clean url for a blog on a dynamic website, but I think that the problem is that I don't know how to plan the website schema. I read about how to use mod_rewrite and all I found is how to make "http://www.website.com/?category&date&post-title" to "http://www.website.com/category/date/post-title". that's works o.k for me. The problem is that If my url looks like "http://www.website.com/blog/?id=34" this method won't work as far as I got it. So, I have two questions: 1. Is there a way to use mod_rewrite (maybe read from a txt file) to read the post title of my blog and rewrite my url by date and post-title? 2. Should I rewrite my website to query the data from one index file in the homepage and use mod_rewrite to write the nice url? should I query also the date and the title of the post instead just the post ID?

    Read the article

  • PLINQ delayed execution

    - by tbischel
    I'm trying to understand how parallelism might work using PLINQ, given delayed execution. Here is a simple example. string[] words = { "believe", "receipt", "relief", "field" }; bool result = words.AsParallel().Any(w => w.Contains("ei")); With LINQ, I would expect the execution to reach the "receipt" value and return true, without executing the query for rest of the values. If we do this in parallel, the evaluation of "relief" may have began before the result of "receipt" has returned. But once the query knows that "receipt" will cause a true result, will the other threads yield immediately? In my case, this is important because the "any" test may be very expensive, and I would want to free up the processors for execution of other tasks.

    Read the article

  • Properly handling possible System.NullReferenceException in lambda expressions

    - by Travis Johnson
    Here's the query in question return _projectDetail.ExpenditureDetails .Where(detail => detail.ProgramFund == _programFund && detail.Expenditure.User == _creditCardHolder) .Sum(detail => detail.ExpenditureAmounts.FirstOrDefault( amount => amount.isCurrent && !amount.requiresAudit) .CommittedMonthlyRecord.ProjectedEac); Table Structure ProjectDetails (1 to Many) ExpenditureDetails ExpenditureDetails (1 to Many) ExpenditureAmounts ExpenditureAmounts (1 to 1) CommittedMonthlyRecords ProjectedEac is a decimal field on the CommittedMonthlyRecords. The problem I discovered in a Unit test (albeit an unlikely event), that the following line could be null: detail.ExpenditureAmounts.FirstOrDefault( amount => amount.isCurrent && !amount.requiresAudit) My original query was a nested loop, in where I would be making multiple trips to the database, something I don't want to repeat. I've looked in to what seemed like some similar questions here, but the solution didn't seem to fit. Any ideas?

    Read the article

  • How to retrieve row count of one-to-many relation while also including original entity?

    - by kaa
    Say I have two entities Foo and Bar where Foo has-many Bar's, class Foo { int ImportantNumber { get; set; } IEnumerable<Bar> Bars { get; set; } } class FooDTO { Foo Foo { get; set; } int BarCount { get; set; } } How can I efficiently sum up the number of Bars per Foo in a DTO using a single query, preferrably only with the Criteria interface. I have tried any number of ways to get the original entity out of a query with ´SetProjection´ but no luck. The current theory is to do something like SELECT Foo.*, BarCounts.counts FROM Foo LEFT JOIN ( SELECT fooId, COUNT(*) as counts FROM Bar GROUP BY fooId ) AS BarCounts ON Foo.id=BarCounts.fooId but with Criterias, and I just can't seem to figure out how.

    Read the article

  • JPQL get most recent rows

    - by Vinnie
    Let's say I have the following tables my_profile_data ------------- integer: profile_id date: date_changed string: value my_profile ------------- integer: profile_id string: name I want to get the most recent profile information. In plain SQL this would look something like: select mpd.profile_id, mpd.value, max(mpd.date_changed) from my_profile_data mpd, my_profile mp where mpd.profile_id = mp.profile_id and mp.name='The Profile I Want' group by mpd.profile_id I've tried different variants of the following JPQL query, but cant get it to work. SELECT mpd FROM MyProfileData mpd LEFT JOIN (SELECT mpd.profileId profileId, MAX(mpd.dateChanged) FROM MyProfileData mpd LEFT JOIN mp.profile WHERE mp.name = :name GROUP BY mpd.profileId) recent ON (rp.profileid = recent.profileId) Is this query doable in JPA? I'm using EclipseLink as my JPA provider. The innermost exception I get when I try to run this is Caused by: NoViableAltException(81!=[506:7: (n= joinAssociationPathExpression ( AS )? i= IDENT | t= FETCH n= joinAssociationPathExpression )]) at org.eclipse.persistence.internal.jpa.parsing.jpql.antlr.JPQLParser.join(JPQLParser.java:3669) ... 73 more

    Read the article

  • How to make sysctl network bridge settings persist after a reboot?

    - by Zack Perry
    I am setting up a notebook for software demo purpose. The machine has 8GB RAM, a Core i7 Intel CPU, a 128GB SSD, and runs Ubuntu 12.04 LTS 64bit. The notebook is used as a KVM host and runs a few KVM guests. All such guests use the virbr0 default bridge. To enable them to communicate with each other using multicast, I added the following to the host's /etc/sysctl.conf, as shown below net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 Afterwards, following man sysctl(8), I issued the following: sudo /sbin/sysctl -p /etc/sysctl.conf My understanding is that this should make these settings persist over reboots. I tested it, and was surprised to find out the following: root@sdn1 :/proc/sys/net/bridge# more *tables :::::::::::::: bridge-nf-call-arptables :::::::::::::: 1 :::::::::::::: bridge-nf-call-ip6tables :::::::::::::: 1 :::::::::::::: bridge-nf-call-iptables :::::::::::::: 1 All defaults are coming back! Yes. I can use some kludgy "get arounds" such as putting a /sbin/sysctl -p /etc/sysctl.conf into the host's /etc/rc.local but I would rather "do it right". Did I misunderstand the man page or is there something that I missed? Thanks for any hints. -- Zack

    Read the article

  • Finding the distance between 2 points in Android using Cursor and the distanceTo() method

    - by LordSnoutimus
    Hello, I am trying to calculate the distance between the first GPS point stored in a SQLite database and the last GPs point stored. My code so far is this: private double Distance() { SQLiteDatabase db1 = waypoints.getWritableDatabase(); Cursor cursor = db1.query(TABLE_NAME, FROM, null, null, null, null,ORDER_BY); Cursor cursor1 = db1.query(TABLE_NAME, FROM, null, null, null, null,ORDER_BY); Double lat = cursor.getDouble(2); Double lon = cursor.getDouble(1); cursor.moveToFirst(); cursor.moveToLast(); cursor.close(); distance = cursor.distanceTo(cursor1); } I realise I need to return a value but the error I am receiving is for the distanceTo method "The method distanceTo(Cursor) is undefined for the type Cursor" Thanks.

    Read the article

  • Article search engine in php

    - by Jason
    Hello, I am using sphinx as a search engine on my website its working perfect and I have no complain with it. The only thing it lacks is, it does not allow me to search articles whose query length is more than 15 words. I know in reality people don't use more than 3-4 words i want to use it for finding duplicate contents. I was wondering if there is any alternative solution to sphinx. I want to cope with duplicate contents. My main articles table is in innodb but I am also caching articles into MyISAM table as well for full text searching but when I search an article it takes ages to perform one search. Its not the query problem, i think mysql lacks the fulltext searching facility. Thanks Jason

    Read the article

  • SubSonic Alias/Where Clause

    - by JohnBob
    Hey, I want to convert the following SQL Query to a SubSonic Query. SELECT [dbo].[tbl_Agency].[ParentCompanyID] FROM [dbo].[tbl_Agency] WHERE REPLACE(PhoneNumber, ' ', '') LIKE REPLACE('%9481 1111%', ' ', '') I thought I would do it like below, but I just can't get it to produce valid SQL. //SubSonic string agencyPhoneNumber = "9481 1111"; SubSonic.SqlQuery subQueryagencyPhoneNumber = new SubSonic.Select(Agency.ParentCompanyIDColumn.ColumnName); subQueryagencyPhoneNumber.From(Agency.Schema.TableName); //WHERE subQueryagencyPhoneNumber.Where("REPLACE(" + Agency.PhoneNumberColumn.ColumnName + ", ' ', '')").Like("%" + agencyPhoneNumber + "%"); Does anyone out there know how to fix this - I'm using SubSonic 2.2. I feel like I'm taking crazy pills here - this should be straightforward, right? Cheers, JohnBob

    Read the article

  • Using Raw SQL with Doctrine

    - by Levi Hackwith
    I have some extremely complex queries that I need to use to generate a report in my application. I'm using symfony as my framework and doctrine as my ORM. My question is this: What is the best way to pass in highly-complex sql queries directly to Doctrine without converting them to the Doctrine Query Language? I've been reading about the Raw_SQL extension but it appears that you still need to pass the query in sections (like from()). Is there anything for just dumping in a bunch of raw sql commands?

    Read the article

  • Formating Columns in Excel created by af:exportCollectionActionListener

    - by Duncan Mills
    The af:exportCollectionActionListener behavior in ADF Faces Rich client provides a very simple way of quickly dumping out the contents or selected rows in a table or treeTable to Excel. However, that simplicity comes at a price as it pretty much left up to Excel how to format the data. A common use case where you have a problem is that of ID columns which are often long numerics. You probably want to represent this data as a string, Excel however will probably have other ideas and render it as an exponent  - not what you intended. In earlier releases of the framework you could sort of work around this by taking advantage of a bug which would allow you to surround the outputText in question with invisible outputText components which provided formatting hints to Excel. Something like this: <af:column headertext="Some wide label">  <af:panelgrouplayout layout="horizontal">     <af:outputtext value="=TEXT(" visible="false">     <af:outputtext value="#{row.bigNumberValue}" rendered="true"/>    <af:outputtext value=",0)" visible="false">   </af:panelgrouplayout> </af:column> However, this bug was fixed and so it can no longer be used as a trick, the export now ignores invisible columns. So, if you really need control over the formatting there are several alternatives: First the more powerful ADF Desktop Integration (ADFdi) package which allows you to build fully transactional spreadsheets that "pull" the data and can update it. This gives you all the control that might need on formatting but it does need specific Excel Add-ins on the client to work. For more information about ADFdi have a look at this tutorial on OTN. Or you can of course look at BI Publisher or Apache POI if you're happy with output only spreadsheets

    Read the article

  • Combine multiple dataset columns to one dataset

    - by Matt
    I have multiple datasets that I would like to combine into one. There is a common ID field that can be associated to each row. Calling Merge on the dataset will add additional rows to the dataset, but I would like to combine the additional columns. There are too many fields to do this in one query and therefore would make it unmanageable. Each individual query would be able to handle ordering to ensure the data is placed in the correct row. For Example lets say I have two queries resulting in two datasets: SELECT ID, colA, colB SELECT colC, colD The resulting dataset would look like ID colA colB colC colD 1 a b c d 2 e f g h Any ideas on ways to accomplish this?

    Read the article

  • Parallel Debugging

    Using Visual Studio 2010 parallel debugging is easy. Two new debugging windows provide a total view of the internals of your PPL and TPL applications with hints on where to start investigations. These are not mere extensions to VS, but tightly integrated with the rest of the debugger experience, so you don't need to learn many new techniques. Use them in your program to eclipse bugs from existence!One of the most FAQ I receive is links to VS2010 parallel debugging content and rather than keep sending many, I decided to gather them all under one permalink, hence this multi link blog post.- MSDN Magazine article on Parallel Debugging.- Screencast of sample code from the article.- MSDN Walkthrough: Debugging a Parallel Application (VB, C++, C#).- Screencast of walkthrough for Parallel Stacks.- Screencast of walkthrough for Parallel Tasks.- MSDN "How To" on Parallel Tasks.- MSDN "How To" on Parallel Stacks.- Detailed blog post on Parallel Tasks.- Detailed blog post on Parallel Stacks.- Detailed blog post on Parallel Stacks - Tasks View.- Detailed blog post on Parallel Stacks - Method View.- Download slides on Parallel Tasks and Parallel Stacks (pptx).If you have questions on these, please post to any of the parallel computing forums or the debugging forum (your question will be routed to me if nobody else can answer it). Comments about this post welcome at the original blog.

    Read the article

  • SQL Oracle LEFT JOIN and SUBQUERY error: ORA-00905: missing keyword

    - by Curro
    Hello everyone. Asking for your help on this Oracle query. It's giving me the error 2 "ORA-00905: missing keyword". It was working fine before I added the LEFT JOIN statement. Obviously it won't deliver the information as we need it without the LEFT JOIN statement. Please provide any help to know which keyword is missing in this query Thanks a lot!: DB Tables: DW.TICKETS DW.TICKET_ACTLOG Subquery table: TABLE_RESOLVERS SELECT TO_CHAR(DW.TICKETS.RESOLVED_TIMESTAMP,'YYYY-MM-DD HH24:MI:SS') AS RESOLVED_DATE, DW.TICKETS.SUBJECT, DW.TICKETS.OWNER_CORE_ID, DW.TICKETS.TICKET_NUMBER, TABLE_RESOLVERS.SUBMITTER AS RESOLVER_CORE_ID FROM DW.TICKETS LEFT JOIN (SELECT TICKET_NUMBER, SUBMITTER FROM DW.TICKET_ACTLOG WHERE TYPE = 'Final Resolution' AND (SUBMITTER = 'B02666' OR SUBMITTER = 'R66604') ORDER BY CREATE_TIMESTAMP DESC ) AS TABLE_RESOLVERS ON DW.TICKETS.TICKET_NUMBER = TABLE_RESOLVERS.TICKET_NUMBER WHERE DW.TICKETS.RESOLVED_TIMESTAMP >= to_date('05-03-2010','dd-mm-yyyy') AND DW.TICKETS.RESOLVED_TIMESTAMP < to_date('8-03-2010','dd-mm-yyyy') AND DW.TICKETS.TICKET_NUMBER LIKE 'TCK%' AND DW.TICKETS.TICKET_NUMBER IN (SELECT TICKET_NUMBER FROM DW.TICKET_ACTLOG WHERE (SUBMITTER = 'B02666' OR SUBMITTER = 'R66604') ) ORDER BY DW.TICKETS.CREATE_TIMESTAMP ASC

    Read the article

  • Select parameter not working on SqlDataSource.

    - by ProfK
    I am using the stored procedure below for the select command of a SqlDataSource, and I'm trying to pass a query string parameter, but I get this error: Procedure or function 'ActivationCampaignGetById' expects parameter '@campaignId', which was not supplied. The parameter is present in the query string: http://localhost:62681/Activations/ActivationCampaignDetails.aspx?id=98 Here is my DataSource code: <asp:SqlDataSource ID="campaignDataSource" runat="server" ConflictDetection="CompareAllValues" ConnectionString="<%$ ConnectionStrings:ProVantageMediaManagement %>" SelectCommand="ActivationCampaignGetById" SelectCommandType="StoredProcedure"> <SelectParameters> <asp:QueryStringParameter DefaultValue="98" Name="campaignId" QueryStringField="id" Type="Int32" /> </SelectParameters> </asp:SqlDataSource> And my stored procedure declaration: ALTER procedure [dbo].[ActivationCampaignGetById] @campaignId int as select

    Read the article

  • Linq-to-SQL statement issue

    - by Anicho
    I am basically looking to bind a search query to a gridview which is nice, but this must be done by a users input query (sort of like a search function). I can get single values and rows returned, but how would I get it to search all columns in my database for the inputted values and return it? My code so far is: Void SearchFunction() { TiamoDataContext context = new TiamoDataContext(); var search = from p in context.UserProfiles where = p.DanceType == UserSearchString select p; UserSearchGrid.DataSource = search; UserSearchGrid.DataBind(); } I tried p.equals but am pretty sure thats not the way to go about it.

    Read the article

< Previous Page | 350 351 352 353 354 355 356 357 358 359 360 361  | Next Page >