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  • (SQL) Selecting from a database based on multiple pairs of pairs

    - by Owen Allen
    The problem i've encountered is attempting to select rows from a database where 2 columns in that row align to specific pairs of data. IE selecting rows from data where id = 1 AND type = 'news'. Obviously, if it was 1 simple pair it would be easy, but the issue is we are selecting rows based on 100s of pair of data. I feel as if there must be some way to do this query without looping through the pairs and querying each individually. I'm hoping some SQL stackers can provide guidance. Here's a full code break down: Lets imagine that I have the following dataset where history_id is the primary key. I simplified the structure a bit regarding the dates for ease of reading. table: history history_id id type user_id date 1 1 news 1 5/1 2 1 news 1 5/1 3 1 photo 1 5/2 4 3 news 1 5/3 5 4 news 1 5/3 6 1 news 1 5/4 7 2 photo 1 5/4 8 2 photo 1 5/5 If the user wants to select rows from the database based on a date range we would take a subset of that data. SELECT history_id, id, type, user_id, date FROM history WHERE date BETWEEN '5/3' AND '5/5' Which returns the following dataset history_id id type user_id date 4 3 news 1 5/3 5 4 news 1 5/3 6 1 news 1 5/4 7 2 photo 1 5/4 8 2 photo 1 5/5 Now, using that subset of data I need to determine how many of those entries represent the first entry in the database for each type,id pairing. IE is row 4 the first time in the database that id: 3, type: news appears. So I use a with() min() query. In real code the two lists are programmatically generated from the result sets of our previous query, here I spelled them out for ease of reading. WITH previous AS ( SELECT history_id, id, type FROM history WHERE id IN (1,2,3,4) AND type IN ('news','photo') ) SELECT min(history_id) as history_id, id, type FROM previous GROUP BY id, type Which returns the following data set. history_id id type user_id date 1 1 news 1 5/1 2 1 news 1 5/1 3 1 photo 1 5/2 4 3 news 1 5/3 5 4 news 1 5/3 6 1 news 1 5/4 7 2 photo 1 5/4 8 2 photo 1 5/5 You'll notice it's the entire original dataset, because we are matching id and type individually in lists, rather than as a collective pairs. The result I desire is, but I can't figure out the SQL to get this result. history_id id type user_id date 1 1 news 1 5/1 4 3 news 1 5/3 5 4 news 1 5/3 7 2 photo 1 5/4 Obviously, I could go the route of looping through each pair and querying the database to determine it's first result, but that seems an inefficient solution. I figured one of the SQL gurus on this site might be able to spread some wisdom. In case I'm approaching this situation incorrectly, the gist of the whole routine is that the database stores all creations and edits in the same table. I need to track each users behavior and determine how many entries in the history table are edits or creations over a specific date range. Therefore I select all type:id pairs from the date range based on a user_id, and then for each pairing I determine if the user is responsible for the first that occurs in the database. If first, then creation else edit. Any assistance would be awesome.

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  • SEO Url Redirect/Rewrite Using Database Managed Links

    - by user204245
    I have searched left and right. And i am trying to find a script or a method on how I can store links in database and use them for redirection. This is an E-commerce project and I am looking for something to manage Product and system URL from database. Something Similar like magneto dose. Basically anything after the domain say like domain.com/demo/12/my_iphone so now demo/12/my_iphone will be sent to database for querry and in databases there will be a destination URL which could be productlisting.php?searchstring=iphones so the user will see link domain.com/demo/12/my_iphone but actualy he will be seeing productlisting.php?searchstring=iphones basically demo/12/my_iphone = productlisting.php?searchstring=iphones and tomorrow if the user want to edit demo/12/my_iphone to demo/12/myiphone he can just do so using simple form which will update in the database. How can i achieve this ?

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  • Enforce link in Team foundation server bug work item for duplicates

    - by Tewr
    We have just started out with Team Foundation Server 2008 / Visual Studio Team System and we are pleased to find how we can export and modify work items to our needs. However, this last thing that would make the setup perfect for us has proved somewhat difficult: We have exported the Bug work item type and have made modifications to it to appear differently to different groups of users. We do, however, see a potential problem in non-developers reporting bugs which turn out to be duplicates. We would like to enforce that users who close a ticket with resolved reason:duplicate also creates a link to the bug which is perceived as the first bug report. I have looked at System.RelatedLinkCount, and put the rule <FIELD type="Integer" name="RelatedLinkCount" refname="System.RelatedLinkCount"> <WHEN field="Microsoft.VSTS.Common.ResolvedReason" value="duplicate"> <PROHIBITEDVALUES> <LISTITEM value="0" /> </PROHIBITEDVALUES> </WHEN> </FIELD> However, when I try to put anything in that scope, the importer tells me that System.RelatedLinkCount does not accept the rule, no matter what I put, but the rule above shows what I am trying to do (even though the most preferable rule would also check that the bug that I link to is not a duplicate as well, though this is overkill :P) Has anyone else tried to enforce rules like this in work items? Is there another approach to solving the same issue? I am thankful for any thoughts on the matter.

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  • HTML email image inverts on link click Outlook 07/10/13

    - by Matt Maclennan
    I'm having an issue on a HTML email in Word rendered Outlooks (2007, 2010, 2013) where I click an image link, and when the mouse is clicked, the image inverts... Here is the code below... <td align="left" width="360" valign="top" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; border-collapse: collapse;" class="hide"> <a href="#" target="_blank"> <img src="test.jpg" width="360" height="528" alt="alt tag" style="display:block;" class="img_mob centertable" border="0" align="left"> </a> </td> Here is a comparison on the image clicked/not clicked... I have tried putting a text-decoration: none on the link. All the links are styled inline as well. This is the only image that it is having this issue on the email, so tried re-saving the image with no luck. The image is saved as a JPEG and SRGB from a Photoshop PSD. Any ideas? Thanks.

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  • Database Design Question: GUID + Natural Numbers

    - by Alan
    For a database I'm building, I've decided to use natural numbers as the primary key. I'm aware of the advantages that GUID's allow, but looking at the data, the bulk of row's data were GUID keys. I want to generate XML records from the database data, and one problem with natural numbers is that I don't want to expose my database key's to the outside world, and allow users to guess "keys." I believe GUID's solve this problem. So, I think the solution is to generate a sparse, unique iD derived from the natural ID (hopefully it would be 2-way), or just add an extra column in the database and store a guid (or some other multibyte id) The derived value is nicer because there is no storage penalty, but it would be easier to reverse and guess compared to a GUID. I'm (buy) curious as to what others on SO have done, and what insights they have.

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  • Jquery thumbnail popup on link Mouseover

    - by Charles Marsh
    Hello All, I have this peice of coding which simply swaps an image when a link is clicked, I also show some hidden html content which is positioned over the image. <script> if($.browser.msie && parseInt($.browser.version) <= 6){ $('#contentone, #contenttwo, #contentthree, #contentfour, .linksBackground').hide(); } $('#contentone, #contenttwo, #contentthree, #contentfour').hide(); $("#linkone").click(function() { $('#contenttwo, #contentthree, #contentfour').hide("1500"); $("#imageone").attr("src","Resources/Images/TEMP-homeOne.jpg"); $("#contentone").show("1500"); }); $("#linktwo").click(function() { $('#contentone, #contentthree, #contentfour').hide("1500"); $("#imageone").attr("src","Resources/Images/TEMP-homeTwo.jpg"); $("#contenttwo").show("1500"); }); $("#linkthree").click(function() { $('#contentone, #contenttwo, #contentfour').hide("1500"); $("#imageone").attr("src","Resources/Images/TEMP-homeThree.jpg"); $("#contentthree").show("1500"); }); $("#linkfour").click(function() { $('#contentone, #contenttwo, #contentthree').hide("1500"); $("#imageone").attr("src","Resources/Images/TEMP-homeFour.jpg"); $("#contentfour").show("1500"); }); </script> Does anyone know how I can further modify this to show a small thumbnail image when the user rolls over the link? I just need a hint because I'm not sure where to turn to... can I achieve it with mouseover?

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  • Fluent NHibernate ExportSchema without connexion string

    - by Vince
    Hi all, I want to propose to user a way to generate database table script creation. To do this for now i use NHibernate ExportSchema bases on a NHibernate configuration generated with Fluent NHibernate this way (during my ISessionFactory creation method): FluentConfiguration configuration = Fluently.Configure(); ... Mapping conf ... configuration.Database(fluentDatabaseProvider); this.nhibernateConfiguration = configuration.BuildConfiguration(); returnSF = configuration.BuildSessionFactory(); ... Later new SchemaExport(this.nhibernateConfiguration) .SetOutputFile(filePath) .Execute(false, false, false); fluentDatabaseProvider is a FluentNHibernate IPersistenceConfigurer which is needed to get proper sql dialect for database creation. When factory is created with an existing database, everything works fine. But what i want to do is to create an NHibernate Configuration object on a selected database engine without a real database behind the scene... And i don't manage to do this. If anybody has some idea.

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  • Existing SQL database android help

    - by basketball4567
    Hey guys, I am new to android programming and i am trying to make an app that will interface with a website i have. It is a movie website with all of its information stored in SQL database. I know how to write the requests and queries in .asp but dont know how to get information from the database in my app. I want the user to be able to enter a movie title, and through a couple of stored procedures that are in my SQL database, return the info on that movie(actor, budget, genre....). I would like to have little info stored on the device, have all of the queries being sent to my SQL server and just have the info being returned. So my question boils down to, how do i link my existing SQL database with an android app. Any help would be great. Thanks Basketball4567

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  • Database source control with Oracle

    - by borjab
    I have been looking during hours for a way to check in a database into source control. My first idea was a program for calculating database diffs and ask all the developers to imlement their changes as new diff scripts. Now, I find that if I can dump a database into a file I cound check it in and use it as just antother type of file. The main conditions are: Works for Oracle 9R2 Human readable so we can use diff to see the diferences. (.dmp files doesn't seem readable) All tables in a batch. We have more than 200 tables. It stores BOTH STRUCTURE AND DATA It supports CLOB and RAW Types. It stores Procedures, Packages and its bodies, functions, tables, views, indexes, contraints, Secuences and synonims. It can be turned into an executable script to rebuild the database into a clean machine. Not limitated to really small databases (Supports least 200.000 rows) It is not easy. I have downloaded a lot of demos that does fail in one way or another. EDIT: I wouldn't mind alternatives aproaches provided that they allows us to check a working system against our release DATABASE STRUCTURE AND OBJECTS + DATA in a bath mode. By the way. Our project has been developed for years. Some aproaches can be easily implemented when you make a fresh start but seem hard at this point. EDIT: To understand better the problem let's say that some users can sometimes do changes to the config data in the production eviroment. Or developers might create a new field or alter a view without notice in the realease branch. I need to be aware of this changes or it will be complicated to merge the changes into production.

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  • Make joomla blog link to inner pages(or blog roll post actual)

    - by somdow
    So i was told to create a blog for client in Joomla and, i have minimal knowledge of Joomla inner workings. I made the blog as seen here http://www.assurancepower.com/about-us/blog.html But the problem is that, the headers/titles for each story in that blog roll cant be clicked. Im wondering is there a way i can make this happen? Essentially this page is a collection of the stories and i want to be able to click on a particular one (any of them) and be taken to its inner page/full version of the story. Not exactly sure what im supposed to do/search for. Im not sure if joomla has a wordpress like functions.php or for example, is there somewhere i can instert a....maybe something like how wordpress does it with permalinks like so: <?php permalink(); ?> //title link here to the actual story. or something like <?php bloginfo('url');?>// this relative link for WP. Etc, All i want is to be able to have these titles in this story be active links to their full counterpart. Not sure what to look for/how to go about fixing this. Thanks in advanced.

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  • Database design question

    - by Lijo
    Hi Team, I have an interesting database design problem that I formulated while travelling by a bus, coming back from my home. Design a normalized database for a bus ticketing system (not reservation system). In each trip, the conductor of the bus will give tickets to its passengers after collecting fare from them. Passengers travel from a various source places to various destination places. The system must be able to give a report of the places for which the number of passengers was more than 2. Suppose the stops for the bus are L1,L2, L3 and L4 Suppose passenger P1 travels from L1 to L4. P2 travels from L2 to L4. P3 travels from L3 to L4. The report should list only (L3-L4) for which it has more than 2 travelers. Can you please help me to solve the following problems 1) Design a normalized database 2) Write a query for the report 3) Is there any site that gives these kinds of interesting database design questions and answers? Thanks Lijo

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  • Transforming OLTP Relational Database to Data Warehousing Model

    - by Russ Cam
    What are the common design approaches taken in loading data from a typical Entity-Relationship OLTP database model into a Kimball star schema Data Warehouse/Marts model? Do you use a staging area to perform the transformation and then load into the warehouse? How do you link data between the warehouse and the OLTP database? Where/How do you manage the transformation process - in the database as sprocs, dts/ssis packages, or SQL from application code?

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  • Eclipselink and update trigger on multiple access to the database

    - by Raven
    Hi, in my project I have a database which many clients connect to. Concurrent access and writing works well. The problem now is not to reload the data every second from the database to always have the current status of the data. Does Eclipselink provide a trigger mechanism on (automatically?) reload the data if the database is changed? How would one use this trigger? Thanks!

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  • Store database, good pattern for simultaneous access

    - by dygi
    I am kinda new to database designing so i ask for some advices or some kind of a good pattern. The situation is that, there is one database, few tables and many users. How should i design the database, or / and which types of queries should i use, to make it work, if users can interact with the database simultaneously? I mean, they have access to and can change the same set of data. I was thinking about transactions, but I am not sure, if that is the right / good / the only solution. I will appreciate some google keywords too.

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  • Jquery Double clicking on link removing div content

    - by ram
    I wrote this code to load the content of a DIV ,when some one clicks on a link. Now,if you click on a link twice,it is removing the content. Here is the code $('a').click(function() { var id = $(this).attr('class'); if(id == 'first') { $('.active').removeClass('active'); $('a.first').addClass('active'); } else if(id == 'second') { $('.active').removeClass('active'); $('a.second').addClass('active'); } $('#first').toggle(id == 'first'); $('#second').toggle(id == 'second'); });? <a class="first">one</a> <a class="second">two</a> <div> <li id="first"> <h2>pen</h2> <div> <div>parker</div> </div> </li> <li id="second" style="display: none;"> <h2>car</h2> <div>Bugatti</div> </div> </li> </div>? .active { color: green; }

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  • How to get the Actual Link file location in VSS?

    - by Regi
    I use VSS and currently I am adding a link file using following code: int ShareFlags = (int)VSSFlags.VSSFLAG_RECURSNO; //Link in sourcesafe IVSSDatabase ssdb = GetVssDatabase(); Shared.Enums.SqlObjectSubType _sqlSubType = new Shared.Enums.SqlObjectSubType(); VSSItem SourceItem = ssdb.get_VSSItem(pSourceItemPath, false); //if source is a proj, recursively share the whole thing if (SourceItem.Type == (int)VSSItemType.VSSITEM_PROJECT) ShareFlags = (int)VSSFlags.VSSFLAG_RECURSYES; VSSItem DestItem = ssdb..get_VSSItem(pDestItemPath, false); //share the item DestItem.Share(SourceItem, pComment, ShareFlags); if (SourceItem.Type == (int)VSSItemType.VSSITEM_FILE) { bResult = true; } return bResult; This will works fine. My issue is that I need to find the actual link location. For example I have a Project named as Link and it contains 2 files say file1 and file2. I added a Link to my Working project (say CurrentProject). This current project have 2 files say f1 and f2. After sharing the Link project then we get the item in Current project as: $/CurrentProject/File1 $/CurrentProject/File2 $/CurrentProject/F1 $/CurrentProject/F2 Here File1 and File2 are link files. I need to get its parent (Actual) location i.e. $/Link/file1 and $/Link/File2 Is there any way to find Link files location using SourceSafeTypeLib?

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  • Populate JOIN into a list in one database query

    - by axio
    I am trying to get the records from the 'many' table of a one-to-many relationship and add them as a list to the relevant record from the 'one' table. I am also trying to do this in a single database request. Code derived from http://stackoverflow.com/questions/1580199/linq-to-sql-populate-join-result-into-a-list almost achieves the intended result, but makes one database request per entry in the 'one' table which is unacceptable. That failing code is here: var res = from variable in _dc.GetTable<VARIABLE>() select new { x = variable, y = variable.VARIABLE_VALUEs }; However if I do a similar query but loop through all the results, then only a single database request is made. This code achieves all goals: var res = from variable in _dc.GetTable<VARIABLE>() select variable; List<GDO.Variable> output = new List<GDO.Variable>(); foreach (var v2 in res) { List<GDO.VariableValue> values = new List<GDO.VariableValue>(); foreach (var vv in v2.VARIABLE_VALUEs) { values.Add(VariableValue.EntityToGDO(vv)); } output.Add(EntityToGDO(v2)); output[output.Count - 1].VariableValues = values; } However the latter code is ugly as hell, and it really feels like something that should be do-able in a single linq query. So, how can this be done in a single linq query that makes only a single database query? In both cases the table is set to preload using the following code: _dc = _db.CreateLinqDataContext(); var loadOptions = new DataLoadOptions(); loadOptions.LoadWith<VARIABLE>(v => v.VARIABLE_VALUEs); _dc.LoadOptions = loadOptions; I am using .NET 3.5, and the database back-end was generated using SqlMetal.

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  • jQuery adding a function to a link question

    - by wali
    Hello all, I have a dynamically created table which in the last <td> there is a hidden <div> which is shown when the user hovers over a link in the <td>. That all works fine but there are several links in the div that I want to fire a function based on the id of the link concat'd with an string captured from a <td> from the parent row. I can capture the the variables I need from the id and <td> but something is wrong with the click function I have created. I monitored the function in FireBug and the function appears to be firing on all of the links instead of the one that is clicked. Here is my working code: function fixLink() { $('a.batchMatchLink').click( function() { var r = $(this).parent().parent().parent().parent().parent(); var x = $(this).attr("id"); var a = $(r).find('td:nth-child(6)').text(); var st = x + "." + a; fireLink(st); } ); } function fireLink(st) { $.ajax({ type: "POST", url: "AjaxWcf.svc/MatchBatch", contentType: "application/json; charset=utf-8", data: st, dataType: "json", success: function(msg) { alert("Entry has been updated"); }, error: AjaxFailed }); Why are all of the links firing? Thanks!!!

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  • Menu MouseOver Image & Image Description Dsiplay from SQL Database

    - by Julu
    Hello, I don't know if this is the right place to post this but here I go. I'm working on a project as a student for my internship and I need help. I have a masterPage with horizontal menu items as shown in the attached screen-captured. What I want to achieved is: Have a default image and description from SQL server database When a user mouse-over the menu item, display an image from a SQL server database and it description based on the mouse-over menu item. When user mouse-out, display default image and description from sql database. I have a also created user interface for inserting images to the database. How do I go about displaying the image and its description based on menu item is my main issue. Here is the link to the screen-captured. http://tinyurl.com/y4p3p32 Thanks a million time

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  • Looping Through Database Query

    - by DrakeNET
    I am creating a very simple script. The purpose of the script is to pull a question from the database and display all answers associated with that particular question. We are dealing with two tables here and there is a foreign key from the question database to the answer database so answers are associated with questions. Hope that is enough explanation. Here is my code. I was wondering if this is the most efficient way to complete this or is there an easier way? <html> <head> <title>Advise Me</title> <head> <body> <h1>Today's Question</h1> <?php //Establish connection to database require_once('config.php'); require_once('open_connection.php'); //Pull the "active" question from the database $todays_question = mysql_query("SELECT name, question FROM approvedQuestions WHERE status = active") or die(mysql_error()); //Variable to hold $todays_question aQID $questionID = mysql_query("SELECT commentID FROM approvedQuestions WHERE status = active") or die(mysql_error()); //Print today's question echo $todays_question; //Print comments associated with today's question $sql = "SELECT commentID FROM approvedQuestions WHERE status = active"; $result_set = mysql_query($sql); $result_num = mysql_numrows($result_set); for ($a = 0; $a < $result_num; $a++) { echo $sql; } ?> </body> </html>

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