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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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• embed multiple youtube videos to chromeless player cue

  - by Quaze

  So in the project ive been working on i use the youtube API to add a video to a chromeless player (got custom buttons, everything works no problems). It loads the youtube id which it gets from the database (Codeigniter, PHP). But what i would like to see is: instead of loading 1 video, id like to add all the videos i get from the database in the cue of that one player. So only one screen, first video retrieved from dbase gets played first, when its done second get loaded preferably also looped. Is there any way i can achieve this? My first guess would be to save the array with youtube id's somewhere and on state change (when the 'video stop'-event gets fired) load the next id from the array. Havent tried this yet because id prefer if the cue gets just gets filled on the init, so it doesnt have to load after a video has been ended. Is This possible?

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• Multiple RadUpload Control in One Page

  - by user159771

  I have an aspx page that uses master page. In the papx page, I load a user control containing 2 RadUpload controls (Rad1 and Rad2). User can choose to upload the file either using the first RadUpload or the second RadUpload and there is certain validation applied for each RadUpload. The weird thing happened is that when I upload file using Rad2 (second RadUpload), the RadUpload.UploadedFiles for the first RadUpload is there (count = 1). Instead of the file being uploaded by Rad2, it is detected as if it is uploaded from Rad1, so my validation failed. Does someone encounter this problem before? This is a very weird thing and I've spent almost 1 and a half day fixing this without knowing what happened to the control

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• Extend multiple classes at once

  - by Starkers

  I want to share a method amongst all Ruby's data object classes. That is to say the following classes: Hash String Number Array Firstly, any classes I've missed out? Secondly, how can I share my_method amongst all classes at once? class Hash def my_method "hi" end end class String def my_method "hi" end end class Number def my_method "hi" end end class Array def my_method "hi" end end

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• Insert copyright message into multiple files

  - by dorelal

  How would you insert a copyright message at the very top of every file?

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• Alter multiple tables' columns length

  - by gdoron

  So, we just found out that 254 tables in our Oracle DBMS have one column named "Foo" with the wrong length- Number(10) instead of Number(3). That foo column is a part from the PK of the tables. Those tables have other tables with forigen keys to it. What I did is: backed-up the table with a temp table. Disabled the forigen keys to the table. Disabled the PK with the foo column. Nulled the foo column for all the rows. Restored all the above But now we found out it's not just couple of tables but 254 tables. Is there an easy way, (or at least easier than this) to alter the columns length? P.S. I have DBA permissions.

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• Creating classes that can be instantiated with single or multiple elements as constructor's argument

  - by Jeriho

  I want to have class that can be instantiated with list, array, seq, set, stack, queue etc. In my opinion class A class B(elems:A*) should handle such stuff. This is my solution: class A class B(elems:Iterable[A]){ def this(elem:A) = this(Seq(elem)) } Can you suggest any improvements?

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• Access multiple objects/arrays in JSON in jQuery $.each

  - by user2880254

  I am trying to build a simple page to view messages saved in a mysql db via JSON and jQuery. My JSON IS {"unread_msgs":[{"id":"6","title":"33333","user1":"19","timestamp":"1383747146","client_id":"Generic"},{"id":"5","title":"42142","user1":"19","timestamp":"1383740864","client_id":"Generic"}],"read_msgs":[{"id":"4","title":"test to addnrow","user1":"19","timestamp":"1383676647","client_id":"Generic"},{"id":"2","title":"kll","user1":"19","timestamp":"1383675548","client_id":"Generic"},{"id":"1","title":"jkjljklj","user1":"19","timestamp":"1382539982","client_id":"Generic"}],"urm_t":2,"rm_t":3} My JS <script type="text/javascript"> function GetClientMsgs () { $.post("assets/server/client_msgs.php",{ client_id:local_client_id } ,function(data) { var MsgData = $.parseJSON(data); console.log("Msg json data parsed"); $.each(MsgData, function(key, value) { console.log(value); $('#unread_row').append('<td><a href="#read_pm" onClick="ReadMsg('+value.unread_msgs.id+'); return false;">'+value.unread_msgs.title+'</a></td><td><a href="#profile">'+value.unread_msgs.studioname+'</a></td><td>'+value.unread_msgs.timestamp+'</td><td><a href="#delete_msg" onClick="DeleteMsg('value.unread_msgs.id+'); return false;">X</a></td>'); $('#read_row').append('<td><a href="#read_pm" onClick="ReadMsg('+value.read_msgs.id+'); return false;">'+value.read_msgs.title+'</a></td><td><a href="#profile">'+value.read_msgs.studioname+'</a></td><td>'+value.read_msgs.timestamp+'</td><td><a href="#delete_msg" onClick="DeleteMsg('+value.read_msgs.id+'); return false;">X</a></td>'); }); }); } </script> PHP $msgs = array('unread_msgs' => $dn1s, 'read_msgs' => $dn2s, 'urm_t' => $unread_msgs, 'rm_t' => $read_msgs); $json = json_encode($msgs); I am trying to post values returned such as unread_msgs.title or .id and am not able to access any of the objects. I have searched on here and could not find something specific to my structure. Thanks alot.

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• Shopping Cart with multiple orders in ASP

  - by Joao Heleno

  I'm building an e-commerce website in ASP.Net/C# and I'm having some difficulties with my shopping cart... I want my costumers to be able to say "I want X boxes, and each box carries Y items". Let's say, for instance, my website sells flowers. A client logs in and then chooses X bouquets and then for each bouquet he adds flowers from the catalog. Can you point me out some links or tips in order to achieve this behaviour? Thanks

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• Combining multiple condition in single case statement in Sql Server

  - by swetha

  According to the following description i have to frame a case ...End statement in Sql server ,help me to frame a complex case..End statement to fulfil the following condition. if PAT_ENT.SCR_DT is not null and PAT_ENTRY.ELIGIBILITY is null then display display 'Favor' if PAT_ENT.SCR_DT is not null and PAT_ENTRY.EL is equal to No, display 'Error' if PAT_ENTRY.EL is Yes and DS.DES is equal to null or OFF, display 'Active' if DS.DES is equal to N, display 'Early Term' if DS.DES is equal to Y, display 'Complete' Thanks in advance.

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• Trouble with Action<T1, T2> and passing multiple parameters

  - by dotnetdev

  Hi, I have this code: s(x => x.Open()); s is a method which calls one parameter, which is perfectly fine, like so: public void s(Action<p1> action) {} Ignoring the naming conventions, if I make the method like the below: public void s(Action<p1, p2> action) {} How do I pass in more than one parameter? Out of interest, is there any way to use the params keyword with Action<? Also, I am using C# 4.0 so I would be interested to see how it can help me in an way. Thanks

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• Assign multiple css classes to a table element in Rails

  - by Eric K

  I'm trying to style a table row using both cycle and a helper, like shown: <tr class= <%= cycle("list-line-odd #{row_class(item)}", "list-line-even #{row_class(item)}")%> > However, when I do this, the resulting HTML is: <tr class = "list-line-odd" lowest-price> with the return from the helper method not enclosed in the quotes, and therefore not recognized. Here's the helper I'm using: def row_class(item) if item.highest_price > 0 and item.lowest_price > 0 and item.highest_price != item.lowest_price if item.current_price >= item.highest_price "highest-price" elsif item.current_price <= item.lowest_price "lowest-price" end end end I must be missing something obvious, but I just can't figure out how to wrap both the result of cycle and the helper method return in the same set of quotes. Any help would be greatly appreciated!

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• how to fetch data from multiple tables MySQL

  - by faisal

  hi all, I am looking some help in php+MySQL+jquery I have 2 tables table1 table 1 have 4 colume (id, title, desc, thumb_img) tabel2 table 2 have 3 colume(id, table1id, img) I just want to compare 2 table with the value of $_get['QS']; and show the records from both (title, desc, img) Looking forward for the help.:)

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• Getting multiple aggregations in Single statement

  - by Harikrishnan R

  The table has data of city and its branchs/atms CITY TYPE NAME ---------------------------------- agra atm X agra branch X1 delhi atm X2 agra atm X3 agra atm X4 delhi branch X5 chennai branch X6 The result set expecting is CITY ATM BRANCH ------------------------------------ agra 3 1 delhi 1 1 chennai 0 1 Whether we can do this in one select statement.

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• Run multiple sql files in mysql batch

  - by hmak

  to run a single file you can run in mysql .\ filename or you outside of mysql you can run mysql < filename I have a directory of sql files so I'm trying to run them all at once by using a wildcard *.sql but it doesn't work. Any ideas?

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• Extending a module multiple times in Drupal

  - by rpSetzer

  I created a nice extension for Drupal based on the webform module. Now, I need to implement different functionality that is also based on the webform module. What is the best way to do this?

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• Catching multiple keystrokes simultaneously in Cocoa

  - by Vinod Kumar

  I have used 4 NSButtons and assigned them to the 4 arrow keys separately to move in four different directions. Now I want to use two keystrokes, left arrow and up arrow together simultaneously, for north east movement, how can I do it? I am only able to use one keystroke at a time , I need to catch two key strokes simultaneously, I need it for my game project.

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• A btter way to represent Same value given multiple values(C#3.0)

  - by Newbie

  I have a situation for which I am looking for a more elegant solution. Consider the below cases "BKP","bkp","book-to-price" (will represent) BOOK-TO-PRICE "aop","aspect oriented program" (will represent) ASPECT-ORIENTED-PROGRAM i.e. if the user enter BKP or bkp or book-to-price , the program should treat that as BOOK-TO-PRICE. The same holds good for the second example(ASPECT-ORIENTED-PROGRAM). I have the below solution: Solution: if (str == "BKP" || str == "bkp" || str == "book-to-price" ) return "BOOK-TO-PRICE". But I think that there can be many other better solutions . Could you people please give some suggestion.(with an example will be better) I am using C#3.0 and dotnet framework 3.5

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• Queue access to the database to avoid multiple cache items

  - by MikeJ

  I have a music related ASP.NET web site which caches a lot of static information from the database on the first request. Sometimes, the application is reset and cache is cleared while the application is on heavy load and then all http requests go to the database to retrieve that static data and cache it for other requests. How can I ensure that only one request go to the database and cache the results, so that other request simply read that info from cache and not needlessly retrieve the same info over and over again. Can I use thread locking? For example, can I do something like lock(this) { db access here }?

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• PHP MySQL Select multiple tables

  - by Jordan Pagaduan

  Is it posibble to select 3 tables at a time in 1 database? Table 1: employee -- employee_id -- first_name -- last_name -- middle_name -- birthdate -- address -- gender -- image -- salary Table 2: logs -- log_id -- full_name -- employee_id -- date -- time -- status Table 2: logout -- log_id -- full_name -- employee_id -- date -- time -- status I wanted to get the value of employee table where $id of selected. Then the $id also get the value of log.time, log.date, logout.time, and logout.date. I already try using UNION but nothing happens.

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• How to specify multiple values in where with AR query interface in rails3

  - by wkhatch

  Per section 2.2 of rails guide on Active Record query interface here: which seems to indicate that I can pass a string specifying the condition(s), then an array of values that should be substituted at some point while the arel is being built. So I've got a statement that generates my conditions string, which can be a varying number of attributes chained together with either AND or OR between them, and I pass in an array as the second arg to the where method, and I get: ActiveRecord::PreparedStatementInvalid: wrong number of bind variables (1 for 5) which leads me to believe I'm doing this incorrectly. However, I'm not finding anything on how to do it correctly. To restate the problem another way, I need to pass in a string to the where method such as "table.attribute = ? AND table.attribute1 = ? OR table.attribute1 = ?" with an unknown number of these conditions anded or ored together, and then pass something, what I thought would be an array as the second argument that would be used to substitute the values in the first argument conditions string. Is this the correct approach, or, I'm just missing some other huge concept somewhere and I'm coming at this all wrong? I'd think that somehow, this has to be possible, short of just generating a raw sql string.

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• How to generate multiple Alter Scripts in SSMS

  - by dannyRods

  I'm using sql server management studio 2008 to try and generate an alter script for each of my stored procedures in order to save the scripts for each revision. I can easily generate an alter script for each individual procedure, but I'm not trying to go through a hundred stored procedures manually. I know that SSMS has an automated generate scripts function under task, but the only options are create, drop and create, and drop. I cant seem to figure out how to enable alter. I've already searched through many SO articles, as well as a little digging in msdn, and I've come up with nothing. I'm hoping that the fine people of stackoverflow will be up to the challenge. Thanks in advance

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• Set an event for a div with multiple class

  - by acidzombie24

  I am trying to set an event on a div whos parent has a class="classA classB"; My css is being applied but i cant figure out how to specify it with jquery. How do i set an event with jquery for this class combination $('[class=classA classB]').live('click', function () { alert('a'); }); html <div class="classA classB">...moredivs...</div>

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• PHP Object Oriented - Best way to implement multiple user roles

  - by Sabeen Malik

  I have three types of users: A, B, C .. Hence a user base class and then we have 3 derived classes. However it is possible for a user to be of 2 types at the same time. How would we go about dealing with this in a decent fashion, keeping in mind the type(s) of the user will define the kind of access they have in an application.

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• Hide multiple PictureBox except clicked

  - by gadirzade

  HI Let me explain what i wont to do.I have a form and there is 10 picturebox on it.when I click one of them I wont to hide all other except clicked.It is possible that on click event of all of them hide others.but I ask for efficent way.forexample with a single function call from click event maybe

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