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  • Select most recent records using LINQ to Entities

    - by begemotya
    I have a simple Linq to Enities table to query and get the most recent records using Date field So I tried this code: IQueryable<Alert> alerts = GetAlerts(); IQueryable latestAlerts = from a in alerts group a by a.UpdateDateTime into g select g.OrderBy(a = a.Identifier).First(); Error: NotSupportedException: The method 'GroupBy' is not supported. Is there any other way to get do it? Thanks a lot!

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  • adding users, membership, and roles to site

    - by Alexander
    I have followed scott's gu tutorial here I uploaded the whole database to my site. Before doing what Scott's says I had one username stored in the membership. How can I create an additional user now that the table is in the web host? I can see that there's aspnet_Membership, aspnet_Applications, etc..etc

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  • SQL programming

    - by Prince
    How can I update a table (MyTable) from a aprticular database (DB1) by equating the said MyTable from a different database (DB2) but it has the same tablename with the one I need to update. I tried putting alias to my program but it doesn't work. Need Help

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  • jQuery delegates with plugins

    - by Daniil Harik
    Hello, jQuery delegates are great, especially when using with table row click events. I was wondering if it's possible to use delegates with plug-ins as well? For example if I attach elastic plug-in to every text area, I would do: $("textarea").elastic(); But how would I attach this plug-in using delegate?

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  • how to remove the starting spaces in aucomplete feature?

    - by murali
    hi I am providing the autocomplete feature to my website....but I am facing the problem that if the user is typing at the start there are spaces(without any key)... how to limit the starting spaces without typing any keyword.....after 3 or 4 spaces it gives the starting database table keywords ... I used trim also .. but no use for( a) these spaces create a problem... how can I remove the spaces... any idea.. thanks, Murali

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  • Querying tables based on other column values

    - by blcArmadillo
    Is there a way to query different databases based on the value of a column in the query? Say for example you have the following columns: id part_id attr_id attr_value_ext attr_value_int You then run a query and if the attr_id is '1' is returns the attr_value_int column but if attr_id is greater than '1' it joins data from another table based on the attr_value_ext.

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  • Providing updating suggestions list with javascript, php and ajax

    - by user1104854
    I'm trying to modify this example on making a live updating list to integrate it with my API. So, instead of using GET on the page with the form, I'd like to send it to that page via a function call. So, here's my form // message.php //function to display the hint sent from gethint.php function message_hint($hint){ echo $hint; } //displays the form for sending messages function send_message_form($to_user,$title,$message){ include 'gethint.php'; ?> <table> <form name = "send_message" method="post"> <td>Send A Message</td> <tr><td>To:</td><td><input type = "text" size="50" name="to_user" id = "to_user" value ="<? echo $to_user; ?>" onkeyup="showHint(this.value)"></td></tr> <tr><td>Title:</td><td><input type = "text" size="50" name="message_title"></td></tr> <tr><td>Message:</td><td><textarea rows="4" cols="50" name="message_details"></textarea></td></tr> <tr><td><input type="submit" name="submit_message"></td></tr> </table> </form> <? } Here's the head of message.php <head> <script> function showHint(str){ var to_user = document.getElementById("to_user").value //to_user is the id of the textbox if (str.length==0){ to_user.innerHTML=""; return; } if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); }else{// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function(){ if (xmlhttp.readyState==4 && xmlhttp.status==200){ alert(to_user) //properly displays the name via alert box to_user.innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","gethint.php?q="+to_user,true); xmlhttp.send(); } </script> </head> The page gethint.php is exactly the same, aside from this at the bottom. //echo $response //this was the original output $message = new messages; $message->message_hint($response);

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  • plot markers on google maps with json and jquery

    - by mark
    I am trying to plot the markers as defined in a json file om Google Maps but they don't show on the map. Can somebody help me with this problem? This is the Json file: http://sionvalais.com/gmap/markers/ This is the Javascritp function: function loadMarkers() { var bounds = map.getBounds(); var zoomLevel = map.getZoom(); $.post("/gmaps/markers/index.php", {zoom: zoomLevel, swLat: bounds.getSouthWest().lat(), swLon: bounds.getSouthWest().lng(), neLat: bounds.getNorthEast().lat(), neLon: bounds.getNorthEast().lng()}, function(data) { processMarkers(data, _smallMarkerSize); }, "json" ); } function processMarkers(webcams, markerSize) { var marker = null; var markersInView = new Array(); var idsInView = new Array(); // Loop through the new webcams for (var i = 0; i < webcams.length; i++) { var idx = markers.indexOf(webcams[i].id); if (idx == -1) { var info_html = "<table class='infowindow'>"; info_html += "<tr><td class='img'>"; info_html += "<img src='" + webcams[i].smallimg + "' /><td>"; info_html += "<td><p><b>" + webcams[i].loc + "</b>"; info_html += "<br /><a href='/webcam/" + webcams[i].url + "' target='_blank'>Show webcam</a></p></td></tr>"; info_html += "</table>"; marker = new WebcamMarker(new GLatLng(webcams[i].latitude, webcams[i].longitude), {image: "" + webcams[i].smallimg + "", height: markerSize, width: markerSize}); marker.myhtml = info_html; map.addOverlay(marker); markersInView[webcams[i].id] = marker; } else { markersInView[webcams[i].id] = markers[webcams[i].id]; } idsInView.push(webcams[i].id); } // Now remove the markers outside of the viewport for (var i = 0; i < webcamids.length; i++) { var idx = markersInView.indexOf(webcamids[i]); if (idx == -1) { marker = markers[webcamids[i]]; map.removeOverlay(marker); } } markers = markersInView; webcamids = idsInView; }

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  • SQL Server Distinct Question

    - by RPS
    I need to be able to select only the first row for each name that has the greatest value. I have a table with the following: id name value 0 JOHN 123 1 STEVE 125 2 JOHN 127 3 JOHN 126 So I am looking to return: id name value 1 STEVE 125 2 JOHN 127 Any idea on the MSSQL Syntax on how to perform this operation?

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  • Database Schema Managing Framework/Library

    - by Karol Kolenda
    I'm looking for any database framework/library for .net which will act as a unified layer between an application and databases. Please note that I'm not interested in querying/updating data (there is plenty of DALs for that) but rather a framework which allows me to manage table schemas and indexes in a managed fashion (without using database specific SQL). I'm particularly interested in a library which supports Oracle, SQL Server and PostreSQL.

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  • How can I translate Linux keycodes from /dev/input/event* to ASCII in Perl?

    - by Bogdan Constantinescu
    I'm writing a Perl script that reads data from the infamous /dev/input/event* and I didn't find a way to translate the key codes generated by the kernel into ASCII. I'm talking about the linux key codes in this table here and I can't seem to find something that would help me translate them without hardcoding an array into the script. Am I missing something? I'd like to skip the array part because it doesn't seem to be a good practice, so any idea? :)

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  • Recommendations for a .NET component to access an email inbox

    - by Ian Nelson
    I've been asked to write a Windows service in C# to periodically monitor an email inbox and insert the details of any messages received into a database table. My instinct is to do this via POP3 and sure enough, Googling for ".NET POP3 component" produces countless (ok, 146,000) results. Has anybody done anything similar before and can you recommend a decent component that won't break the bank (a few hundred dollars maximum)? Would there be any benefits to using IMAP rather than POP3?

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  • hide an entry from Toc in latex.

    - by voodoomsr
    hi all, i wanna know how can hide a section from table of contents but without losing the section number in the body of the document...for example in this tex i lose the number for "hide", and all the sequence is damaged. \documentclass{article} \begin{document} \tableofcontents \section{uno} \section{dos} \section*{hide} \section{tres} \end{document}

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  • How to use SQL to output latest info with multiple col

    - by TGU
    Hi, I have a "weather" table below with 3 cols: City Temperature Date New York 22 C 10/10/2005 Seattle 21 C 10/10/2005 New York 18 C 10/09/2005 Seattle 20 C 10/09/2005 Washington 17 C 10/09/2005 New York 21 C 10/08/2005 Washington 20 C 10/08/2005 I want to find out the latest info on the City and Temperature in 3 cols as well (see example): City Temperature Date New York 22 C 10/10/2005 Seattle 21 C 10/10/2005 Washington 17 C 10/09/2005 Can anyone help? Thanks Rgds

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  • NHibernate - I have many, but I only want one!

    - by MartinF
    Hello, I have a User which can have many Emails. This is mapped through a List collection (exposed by IEnumerable Emails on the User). For each User one of the Emails will be the Primary one ("Boolean IsPrimary" property on Email). How can I get the primary Email from User without NHibernate loads every email for the User ? I have the following two entities, with a corresponding table for each public class User { public virtual int Id { get; set; } public virtual IEnumerable<Email> Emails { get; set; } // public virtual Email PrimaryEmail { get; set; } - Possible somehow ? } public class Email { public virtual int Id { get; set; } public virtual String Address { get; set; } public virtual Boolean IsPrimary { get; set; } public virtual User User { get; set; } } Can I map a "Email PrimaryEmail" property etc. on the User to the Email which have "IsPrimary=1" set somehow ? Maybe using a Sql Formula ? a View ? a One-To-One relationship ? or another way ? It should be possible to change the primary email to be one of the other emails, so i would like to keep them all in 1 table and just change the IsPrimary property. Using a Sql Formula, is it be possible to keep the "PrimaryEmail" property on the User up-to-date, if I set the IsPrimary property on the current primary email to false, and then afterwards set the PrimaryEmail property to the email which should be the new primary email and set IsPrimary to true ? Will NHibernate track changes on the "old/current" primary Email loaded by the Sql Formula ? What about the 1 level cache and the 2 level cache when using SqlFormula ? I dont know if it could work by using a View ? Then i guess the Email could be mapped like a Component ? Will it work when updating the Email data when loaded from the View ? Is there a better way ? As I have a bi-directional relationship between User and Email I could in many cases of course query the primary Email and then use the "User" property on the Email to get the User (instead of the other way around - going from User to the primary Email) Hope someone can help ?

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  • SQL Random number not working

    - by JMSA
    declare @fieldForceCounter as int declare @SaleDate as dateTime declare @RandomNoSeed as decimal set @fieldForceCounter = 1 set @SaleDate = '1 Jan 2009' set @RandomNoSeed = 0.0 WHILE @fieldForceCounter <= 3 BEGIN while @SaleDate <= '1 Dec 2009' begin INSERT INTO MonthlySales(FFCode, SaleDate, SaleValue) VALUES(@fieldForceCounter, @SaleDate, RAND(@RandomNoSeed)) set @saleDate = @saleDate + 1 set @RandomNoSeed = Rand(@RandomNoSeed) + 1 end set @SaleDate = '1 Jan 2009' set @fieldForceCounter = @fieldForceCounter + 1 END GO This T-SQL command was supposed to insert random values in the 'SaleValue'-column in the 'MonthlySales'-table. But it is inserting '1' every time . What can be the problem?

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  • How to auto-scroll UITableView?

    - by Sheehan Alam
    I am trying to do something interesting. I am pulling some JSON data and populating cells in a UITableView. How can I make the UITableView scroll ever second or so? I want to give the effect that as new data is coming in, the table is scrolling, so it is streaming. Any ideas?

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  • sql server optional parameters: syntax for between clause

    - by Aseem Gautam
    @FromDate datetime = null @ToDate datetime = null SELECT * FROM TABLE WHERE .... AND [PI].Date BETWEEN @FromDate AND @ToDate When any date is null, the records are not displayed. What is the correct syntax so that I can get all records if any of the dates are null. I have thought of this: @FromDate datetime = '01/01/1901', @ToDate datetime = '12/31/9999' Thanks.

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  • Historical / auditable database

    - by Mark
    Hi all, This question is related to the schema that can be found in one of my other questions here. Basically in my database I store users, locations, sensors amongst other things. All of these things are editable in the system by users, and deletable. However - when an item is edited or deleted I need to store the old data; I need to be able to see what the data was before the change. There are also non-editable items in the database, such as "readings". They are more of a log really. Readings are logged against sensors, because its the reading for a particular sensor. If I generate a report of readings, I need to be able to see what the attributes for a location or sensor was at the time of the reading. Basically I should be able to reconstruct the data for any point in time. Now, I've done this before and got it working well by adding the following columns to each editable table: valid_from valid_to edited_by If valid_to = 9999-12-31 23:59:59 then that's the current record. If valid_to equals valid_from, then the record is deleted. However, I was never happy with the triggers I needed to use to enforce foreign key consistency. I can possibly avoid triggers by using the extension to the "PostgreSQL" database. This provides a column type called "period" which allows you to store a period of time between two dates, and then allows you to do CHECK constraints to prevent overlapping periods. That might be an answer. I am wondering though if there is another way. I've seen people mention using special historical tables, but I don't really like the thought of maintainling 2 tables for almost every 1 table (though it still might be a possibility). Maybe I could cut down my initial implementation to not bother checking the consistency of records that aren't "current" - i.e. only bother to check constraints on records where the valid_to is 9999-12-31 23:59:59. Afterall, the people who use historical tables do not seem to have constraint checks on those tables (for the same reason, you'd need triggers). Does anyone have any thoughts about this? PS - the title also mentions auditable database. In the previous system I mentioned, there is always the edited_by field. This allowed all changes to be tracked so we could always see who changed a record. Not sure how much difference that might make. Thanks.

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