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  • Displaying Query Results Horizontally

    - by AndyD273
    I am wondering if it is possible to take the results of a query and return them as a CSV string instead of as a column of cells. Basically, we have a table called Customers, and we have a table called CustomerTypeLines, and each Customer can have multiple CustomerTypeLines. When I run a query against it, I run into problems when I want to check multiple types, for instance: Select * from Customers a Inner Join CustomerTypeLines b on a.CustomerID = b.CustomerID where b.CustomerTypeID = 14 and b.CustomerTypeID = 66 ...returns nothing because a customer can't have both on the same line, obviously. In order to make it work, I had to add a field to Customers called CustomerTypes that looks like ,14,66,67, so I can do a Where a.CustomerTypes like '%,14,%' and a.CustomerTypes like '%,66,%' which returns 85 rows. Of course this is a pain because I have to make my program rebuild this field for that Customer each time the CustomerTypeLines table is changed. It would be nice if I could do a sub query in my where that would do the work for me, so instead of returning the results like: 14 66 67 it would return them like ,14,66,67, Is this possible?

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  • Serialize object from within

    - by Maximus
    I have the class testClass which has the method save. This method saves object to a database. But it needs to serialize object before saving. How can I serialize object from within the class to do that? class testClass { private $prop = 777; public function save() { $serializedObject = serialize(self); DB::insert('objects', array('id', 'object')) ->values(array(1, $serializedObject)) ->execute(); } } serialize(self) obviously doesn't work.

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  • ActiveRecord and transactionsin between `before_save` and `save`

    - by JP
    I have some logic in before_save whereby (only) when some conditions are met I let the new row be created with special_number equal to the maximum special_number in the database + 1. (If the conditions aren't met then I do something different, so I can't use auto-increments) My worry is that two threads acting on this database at once might pick the same special_number if the second is executed while the first is saving. Is there way to lock the database between before_save and finishing the save, but only in some cases? I know all saves are sent in transactions, will this do the job for me? def before_save if things_are_just_right # -- Issue some kind of lock? # -- self.lock? I have no idea # Pick new special_number new_special = self.class.maximum('special_number') + 1 write_attribute('special_number',new_special) else # No need to lock in this case write_attribute('special_number',some_other_number) end end

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  • How to add button to UINavigationController.

    - by Aeolai
    I have the following code with adds a navigation controller to a modal view. The nav bar and view all appear ok, but the right button does not. What am I doing wrong? UpgradesViewController* upgradesViewController = [[UpgradesViewController alloc] initWithNibName:@"UpgradesView" bundle:nil]; upgradesViewController.title = @"Upgrades"; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:upgradesViewController]; navController.modalTransitionStyle = UIModalTransitionStyleCoverVertical; navController.navigationBar.barStyle = UIBarStyleBlack; UIBarButtonItem* doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Show" style:UIBarButtonItemStylePlain target: self action:nil]; navController.navigationItem.rightBarButtonItem = doneButton; [self presentModalViewController:navController animated:YES]; [navController release]; [upgradesViewController release];

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  • How is does this module code work?

    - by phsr
    I'm new to ruby and I am trying to figure out how the following code works The following code is inside a class in a module. The method is called later with the following code: @something ||= Module::Class.config class << self def config &block options = OpenStruct.new yield options if block_given? init_client! Client.new(options) end def init_client!(client) base_eigenclass = class << Base; self; end base_eigenclass.send :define_method, :client do @client = client end client end end The class has some constants in it, and when the classes initialize is called, the instance member are set to option.variable || VARIABLE_CONSTANT. I understand that if there is no value for option.variable then VARIABLE_CONSTANT is used, but I don't understand that calling Module::Class.config do |options| #some block end set the @client until config is called again with options The code definitely works, but I want to understand how it does

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  • NSString inheritance

    - by Stef
    Hi, I'm doing an useless thing for my first step in Obj-C @interface String : NSString { int m_isnull; } - (id) init; - (int) isNull; @end @implementation String - (id) init { self = [super init]; m_isnull=1; return self; } - (int) isNull { return m_isnull; } @end test : String *a; a=@"ok"; Works fine, but just 2 little questions 1) When I'm compiling I have this warning warning: incompatible Objective-C types assigning 'struct NSString *', expected 'struct String *' I don't know how to avoid it !? 2) a=@"ok" is a fastest way to initialize a string, but when I'm debugging, I don't stop by at my init constructor why ?

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  • Dynamic decision on which class to use

    - by Sirupsen
    Hello, Let's say I have a class named Klass, and a class called Klass2. Depending on the user's input, I'd like to decide whether I'll call "hello_world" on Klass, or Klass2: class Klass def self.hello_world "Hello World from Klass1!" end end class Klass2 def self.hello_world "Hello World from Klass2!" end end input = gets.strip class_to_use = input puts class_to_use.send :hello_world The user inputs "Klass2" and the script should say: Hello World from Klass2! Obviously this code doesn't work, since I'm calling #hello_world on String, but I'd like to call #hello_world on Klass2. How do I "convert" the string into a referrence to Klass2 (or whatever the user might input), or how could I else would I achieve this behavior?

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  • Adding up row number and displaying total using COUNT (PHP MySQL)

    - by Yvonne
    I'm attempting to run a query that adds up the total number of subjects in a class. A class has many subjects. There is a 'teachersclasses' table between teachers (the user table) and classes. The principles sounds pretty simple but I'm having some trouble in getting my page to display the number of subjects for each class (directly associated with the teacher) This is what I have so far, trying to make use of the COUNT with a nested SELECT: SELECT (SELECT count(*) FROM subjects WHERE subjects.classid = class.classid) AS total_subjects, class.classname, class.classid FROM class Then I am calling up 'num_subjects' to present the total within a while loop: <?php echo $row['total_subjects']?> From the above, I am receiving the total subjects for a class, but within the same table row (for one class) and my other while loop doesnt run anymore, which returns all of the classes associated with a teacher :( ... Bit of a mess now! I know to return the classes for a particular teacher, I can do an additional WHERE clause on the session of 'teacherid' but I think my query is getting too complicated for me that errors are popping up everywhere. Anyone have a quick fix for this! Thanks very much

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  • # how to split the column values using stored procedure

    - by user1444281
    I have two tables table 1 is SELECT * FROM dbo.TBL_WD_WEB_DECK WD_ID WD_TITLE ------------------ 1 2 and data in 2nd table is WS_ID WS_WEBPAGE_ID WS_SPONSORS_ID WS_STATUS ----------------------------------------------------- 1 1 1,2,3,4 Y I wrote the following stored procedure to insert the data into both the tables catching the identity of main table dbo.TBL_WD_WEB_DECK. WD_ID is related with WS_WEBPAGE_ID. I wrote the cursor in update action to split the WS_SPONSORS_ID column calling the split function in the cursor. But it is not working. The stored procedure is: ALTER procedure [dbo].[SP_Example_SPLIT] ( @action char(1), @wd_id int out, @wd_title varchar(50), @ws_webpage_id int, @ws_sponsors_id varchar(250), @ws_status char(1) ) as begin set nocount on IF (@action = 'A') BEGIN INSERT INTO dbo.TBL_WD_WEB_DECK(WD_TITLE)VALUES(@WD_TITLE) DECLARE @X INT SET @X = @@IDENTITY INSERT INTO dbo.TBL_WD_SPONSORS(WS_WEBPAGE_ID,WS_SPONSORS_ID,WS_STATUS) VALUES (@ws_webpage_id,@ws_sponsors_id,@ws_status) END ELSE IF (@action = 'U') BEGIN UPDATE dbo.TBL_WD_WEB_DECK SET WD_TITLE = @wd_title WHERE WD_ID = @WD_ID UPDATE dbo.TBL_WD_SPONSORS SET WS_STATUS = 'N' where WS_SPONSORS_ID not in (@ws_sponsors_id) and ws_webpage_id = @wd_id BEGIN /* Declaring Cursor to split the value in ws_sponsors_id column */ Declare @var int Declare splt cursor for /* used the split function and calling the parameter in that split function */ select * from iter_simple_intlist_to_tbl(@WS_SPONSORS_ID) OPEN splt FETCH NEXT FROM splt INTO @var WHILE (@@FETCH_STATUS = 0) begin if not exists(select * from dbo.TBL_WD_SPONSORS where WS_WEBPAGE_ID = @wd_id and WS_SPONSORS_ID = @var) begin insert into dbo.TBL_WD_SPONSORS (WS_WEBPAGE_ID,WS_SPONSORS_ID) values(@wd_id,@var) end end CLOSE SPONSOR DEALLOCATE SPONSOR END END END The result I want is if I insert the data in WD_ID and IN WS_SPONSORS_ID column the data in the WS_SPONSORS_ID column should split and I need to compare it with WD_ID. The result I need is: WD_ID WD_TITLE --------------------- 1 TEST 2 TEST1 3 WS_ID WS_WEBPAGE_ID WS_SPONSORS_ID WS_STATUS -------------------------------------------------------- 1 1 1 Y 2 1 2 N 3 1 3 Y If I pass the string in WS_SPONSORS_ID as 1,2,3 it has to split like the above. Can you help?

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  • How does this module code work?

    - by phsr
    I'm new to ruby and I am trying to figure out how the following code works The following code is inside a class in a module. The method is called later with the following code: @something ||= Module::Class.config class << self def config &block options = OpenStruct.new yield options if block_given? init_client! Client.new(options) end def init_client!(client) base_eigenclass = class << Base; self; end base_eigenclass.send :define_method, :client do @client = client end client end end The class has some constants in it, and when the classes initialize is called, the instance member are set to option.variable || VARIABLE_CONSTANT. I understand that if there is no value for option.variable then VARIABLE_CONSTANT is used, but I don't understand that calling Module::Class.config do |options| #some block end set the @client until config is called again with options The code definitely works, but I want to understand how it does

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  • How do I compare 2 fields and return the lowest value of each record?

    - by BigRob
    I'm slowly learning access to make a database of products and suppliers for my parents' business. What i've got is a table of products indexed by our product reference and 2 more tables for 2 different suppliers that contains the suppliers product reference and price that links with our reference. I've made a query that performs a left outer join such that it returns a table of our products with each supplier's reference and price, i.e: Ref | Product Name | Supplier 1 Ref | Supplier 1 Price | Supplier 2 Ref | Supplier 2 Price Here's the query I used: SELECT Catalog.Ref, Catalog.[Product Name], Catalog.Price, [D Products].[Supplier Ref], [D Products].Cost, [GS Products].[Supplier Ref], [GS Products].Cost FROM ([Catalog] LEFT JOIN [D Products] ON Catalog.Ref = [D Products].Ref) LEFT JOIN [GS Products] ON Catalog.Ref = [GS Products].Ref; Not all products are available from both suppliers, hence the outer join. What I want to do (with a query?) is to take the table produced by the query above and simply show the product reference, cheapest supplier reference and cheapest supplier price, i.e: Ref | Cheapest Suppplier Ref | Cheapest Supplier Price Unfortunately my SQL knowledge isn't quite good enough to figure this out, but if anyone can help i'd really appreciate it. Thanks, Rob

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  • Passing class method as selector problem.

    - by Anoide
    Hi, I want to build a selector from a class method. I'm doing it this way: NavigationTreeActionHandler* handler=[NavigationTreeActionHandler self]; NavigationTreeNode* bombsNode=new NavigationTreeNode("Bombs","bigbomb.tif" ,handler,@selector(BigBombButtonPressed:)); I need to pass to NavigationTreeNode the target and the selector to the target method. I try to get the target using the self property of the class object (Don't know if htis is the correct way to do it). Then I get the selector for the class method I want to call on the class. Everything compiles ok but it fails when I use: [[handler class] instanceMethodSignatureForSelector:selector]; I get a nil and don't really know why... could anybody help please? Thanks in advance, Olson.

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  • Error reading file with accented vowels

    - by Daniel Dcs
    The following statement to fill a list from a file : action = [] with open (os.getcwd() + "/files/" + "actions.txt") as temp:          action = list (temp) gives me the following error: (result, consumed) = self._buffer_decode (data, self.errors, end) UnicodeDecodeError: 'utf-8' codec can not decode byte 0xf1 in position 67: invalid continuation byte if I add errors = 'ignore': action = [] with open (os.getcwd () + "/ files /" + "actions.txt", errors = 'ignore') as temp:          action = list (temp) Is read the file but not the ñ and vowels accented á-é-í-ó-ú being that python 3 works, as I have understood, default to 'utf-8' I'm looking for a solution for two or more days, and I'm getting more confused. In advance thank you very much for any suggestions.

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  • Can we use (id) in if- else condition ?

    - by srikanth rongali
    I have written my code in following way in cocos2d. id actionTo = [CCFadeOut actionWithDuration:4.0f]; id actionTo0 = [CCSequence actionWithDuration:2.0f]; if (m < enemyNumber) id actionTo1 = [CCCallFunc actionWithTarget:self selector:@selector(goToNextScene)]; else id actionTo1 = [CCCallFunc actionWithTarget:self selector:@selector(goToEndScene)]; id actionSeq = [CCSequence actions:actionTo, actionTo0, actionTo1, nil]; [targetE runAction: [CCSequence actions:actionSeq, nil]]; error: expected expression before 'id' I am getting the above error. Should not we use (id) in if condition ? I want to get called two selectors by using the if- else condition. How can I make it ? Thank You.

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  • iOS - How to pass information from the VIEW to the Controller?

    - by user1720503
    I am fairly new to programming in general, and have been following the CS193p videos on iTunesU. I am currently doing assignment 3, and am having trouble getting a bit of information from the View sent to the View Controller. I believe I have set up the whole delegation thing correctly, so the question really is to how to get my View Controller to see a bit of information (such as self.bounds.size.width), which is a property that only the View has. Would this involve using self.dataSource? And if so, through what means could I pass this bit of information? Thanks!!

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  • How to deal with delegate method calling back the object who send the message ?

    - by olipion
    I have two object: @protocol ObjectADelegate - (void)objectAfirst:(ObjectA *)obj; - (void)objectAsecond:(ObjectA *)obj; @end @interface ObjectA : NSObject { id<ObjectADelegate> delegate; - (void)callSecond { [self.delegate objectAsecond:self]; } @end @interface ObjectB : NSObject <ObjectADelegate>{ ObjectA *myObjectA; } @implementation ObjectB - (void)objectAfirst:(ObjectA *)obj { // First is finished, do second [obj callSecond]; } - (void)objectASecond:(ObjectA *)obj { // Do my stuff } @end As you can see in the code, when ObjectA send the message objectAfirst to its delegate, objectb use again objectA methods that result in objecta calling back objectb. It means that what first fire objectAfirst is not finished but objectA send the objectAsecond message. Could it be a problem ? Any way to let delay message handling in objectB ? for example, something like using [obj performSelector:@selector(callSecond) afterDelay:0.01]; instead of [obj callSecond]; ?

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  • ASP.NET MVC: How to show value in a label from selected Drop Down List item?

    - by Lillie
    Hi! I'm trying to show a value of selected Drop Down List item in a label. I managed to make this work with Web Forms but with MVC I'm totally lost. My Index looks like this: [...] <% using (Html.BeginForm()) { %> <table> <tr> <td>Processor</td> <td><%= Html.DropDownList("lstProcessor1", new SelectList((IEnumerable)ViewData["Processor1List"], "product_price", "product_description")) %></td> </tr> <tr> <td>Total Amount</td> <td>0,00 €</td> </tr> </table> <input type="submit" value="Submit" /> <% } %> [...] And my HomeController starts with: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using MvcApplication1.Models; namespace MvcApplication1.Controllers { [HandleError] public class HomeController : Controller { // Connect database DB50DataContext _ctx = new DB50DataContext(); // GET: /Home/ public ActionResult Index() { // Search: Processors var products = from prod in _ctx.products where prod.product_searchcode == "processor1" select prod; ViewData["Processort1List"] = products; return View(); } I would like the product_price to show on the second line of the table, where it now says 0,00 €. It should also update the price automatically when the item from the Drop Down List is changed. I guess I should use JQuery but I have no idea how. Could someone please give me some tips how to do this?

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  • How to create arrayType for WSDL in Python (using suds)?

    - by Uri
    Environment: Python v2.6.2 suds v0.3.7 The WSDL (server) I work with, have the following schema sub-sections (I tried to write it clearly using plain text) - [ sub-section #1 ] searchRequest: (searchRequest){ userIdentification = (userIdentification){ username = "" password = "" } itineraryArr = (itineraryArray){ _arrayType = "" _offset = "" _id = "" _href = "" _arrayType = "" } ... ... [ sub-section #2 ] itinerary: (itinerary){ departurePoint = (locationPoint){ locationId = None radius = None } arrivalPoint = (locationPoint){ locationId = None radius = None } ... ... There is no problem with 'userIdentification' (which is a "simple" type) But, 'itineraryArr' is an array of 'itinerary', and I don't know how to use python to create XML array. I tried few combinations, for example itinerary0 = self.client.factory.create('itinerary') itineraryArray = self.client.factory.create('itineraryArray') itineraryArray = [itinerary0] searchRequest.itineraryArr = itineraryArray But all my trials resulted with the same server error - Server raised fault: 'Cannot use object of type itinerary as array' (Fault){ faultcode = "SOAP-ENV:Server" faultstring = "Cannot use object of type itinerary as array" } Appreciate you help..... Thanks, Uri

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  • hash tables and 2d vectors

    - by Sunil
    I want to push a 2d vector into a hash table row by row and later search for a row (vector) in the hash table and want to be able to find it. I want to do something like #include <iostream> #include <set> #include <vector> using namespace std; int main(){ std::set < vector<int> > myset; vector< vector<int> > v; int k = 0; for ( int i = 0; i < 5; i++ ) { v.push_back ( vector<int>() ); for ( int j = 0; j < 5; j++ ) v[i].push_back ( k++ ); } for ( int i = 0; i < 5; i++ ) { std::copy(v[i].begin(),v[i].end(),std::inserter(myset)); // This is not correct but what is the right way ? // and also here, I want to search for a particular vector if it exists in the table. for ex. the second row of vector v. } return 0; } I'm not sure how to insert and look up a vector in a set. So if nybody could guide me, it will be helpful. Thanks

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  • How to use JOIN using Hibernate's session.createSQLQuery()

    - by javauser71
    Hi All, I have two Entity (tables) - Employee & Project. An Employee can have multiple Projects. Project table's CREATOR_ID field refers to Employee table's ID field. Employee entity maintains a list of Project. Using EntityManager following query works fine - "entityManager.createQuery("select e from EmployeeDTO e, ProjectDTO p where p.id = ?1 and p.creator.id=e.id"); But since I have the LAZY association relationship, I get error: "Could not initialize proxy - no Session" if I try to access Project info from Employee entity. This is expected and so I am using Hibernate's Session to create query as shown below. Session session = HibernateUtil.getSessionFactory().openSession(); org.hibernate.Query q = session.createSQLQuery("SELECT E FROM EMPLOYEE_TAB E, PROJECT_TAB P WHERE P.ID = " + projectId + " AND P.CREATOR_ID = E.ID") .addEntity("EmployeeDTO ", EmployeeDTO.class) .addEntity("ProjectDTO", ProjectDTO.class); But I get error like: "Column 'E' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification..." Can anyone suggest what will be the right JOIN syntax for such case? If I use ("SELECT * FROM EMPLOYEE_TAB E, ........") - it gives other error: "java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.im.server.dto.EmployeeDTO". Thanks in advance.

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  • how can i introspect properties and model fields in django?

    - by shreddd
    I am trying to get a list of all existing model fields and properties for a given object. Is there a clean way to instrospect an object so that I can get a dict of fields and properties. class MyModel(Model) url = models.TextField() def _get_location(self): return "%s/jobs/%d"%(url, self.id) location = property(_get_location) What I want is something that returns a dict that looks like this: { 'id' : 1, 'url':'http://foo', 'location' : 'http://foo/jobs/1' } I can use model._meta.fields to get the model fields, but this doesn't give me things that are properties but not real DB fields.

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  • Field to display Previous 30 Day Total

    - by whytheq
    I've got this table: CREATE TABLE #Data1 ( [Market] VARCHAR(100) NOT NULL, [Operator] VARCHAR(100) NOT NULL, [Date] DATETIME NOT NULL, [Measure] VARCHAR(100) NOT NULL, [Amount] NUMERIC(36,10) NOT NULL, --new calculated fields [DailyAvg_30days] NUMERIC(38,6) NULL DEFAULT 0 ) I've populated all the fields apart from DailyAvg_30days. This field needs to show the total for the preceding 30 days e.g. 1. if Date for a particular record is 2nd Dec then it will be the total for the period 3rd Nov - 2nd Dec inclusive. 2. if Date for a particular record is 1st Dec then it will be the total for the period 2nd Nov - 1st Dec inclusive. My attempt to try to find these totals before updating the table is as follows: SELECT a.[Market], a.[Operator], a.[Date], a.[Measure], a.[Amount], [DailyAvg_30days] = SUM(b.[Amount]) FROM #Data1 a INNER JOIN #Data1 b ON a.[Market] = b.[Market] AND a.[Operator] = b.[Operator] AND a.[Measure] = b.[Measure] AND a.[Date] >= b.[Date]-30 AND a.[Date] <= b.[Date] GROUP BY a.[Market], a.[Operator], a.[Date], a.[Measure], a.[Amount] ORDER BY 1,2,4,3 Is this a valid approach or do I need to approach this from a different angle?

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  • How to release my view from stack ?

    - by aman-gupta
    Hi, In my application I m using following coding convention to open my default screen :-- AppDelegate *ptrDefaultScreen = (AppDelegate *)[[UIApplication sharedApplication]delegate]; [self.navigationController presentModalViewController:ptrDefaultScreen.FrmFlashScreenLink animated:YES]; but when I move to other screen after default screen ,my default screen is still exists even i used [self dismissModelViewController:YES]; to dimiss default screen from view. where I m wrong I want my default screen will be completely removed from view. Is any other way to call default screen before actual application. Please help me out.Thanks in advance

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  • Using ddply() to Get Frequency of Certain IDs, by Appearance in Multiple Rows (in R)

    - by EconomiCurtis
    Goal If the following description is hard follow, please see the example "before" and "after" to see a straightforward example. I have bartering data, with unique trade ids, and two sides of the trade. Side1 and Side2 are baskets, lists of item ids that represent both sides of the barter transaction. I'd like to count the frequency each ITEM appears in TRADES. E.g, if item "001" appeared in 3 trades, I'd have a count of 3 (ignoring how many times the item appeared in each trade). Further, I'd like to do this with the plyr ddply function. (If you're interested as to my motivation, I working over many hundreds of thousands of transactions and am already using a ddply to calculate several other summary statistics. I'd like to add this to the ddply I'm already using, rather than calculate it after, and merge it into the ddply output.... sorry if that was difficult to follow.) In terms of pseudo code I'm working off of: merge each row of Side1 and Side2 by row, get unique() appearances of each item id apply table() function transpose and relabel output from table Example of the structure of my data, and the output I desire. Data Example (before): df <- data.frame(TradeID = c("01","02","03","04")) df$Side1 = list(c("001","001","002"), c("002","002","003"), c("001","004"), c("001","002","003","004")) df$Side2 = list(c("001"),c("007"),c("009"),c()) Desired Output (after): df.ItemRelFreq_byTradeID <- data.frame(ItemID = c("001","002","003","004","007","009"), RelFreq_byTrade = c(3,3,2,2,1,1)) One method to do this without ddply I've worked out one way to do this below. My problem is that I can't quite seem to get ddply to do this for me. temp <- table(unlist(sapply(mapply(c,df$Side1,df$Side2), unique))) df.ItemRelFreq_byTradeID <- data.frame(ItemID = names(temp), RelFreq_byTrade = temp[]) Thanks for any help you can offer! Curtis

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