duplicates

问题 This query below selects all rows that have a row with the same father registering 335 days or less since earlier registration. Is there a way to edit this query so that it does not eliminate the duplicate row in the output? I need to see all instances of the registration for that father within 335 days of each other. SELECT * FROM ymca_reg a later WHERE NOT EXISTS ( SELECT 1 FROM ymca_reg a earlier WHERE earlier.Father_First_Name = later.Father_First_Name AND earlier.Father_Last_Name = later

问题 New to R and want to use mlogit function. However after putting my data into a data frame and run x <- mlogit.data(mlogit, choice="PlacedN", shape="long", alt.var="RaceID") I get duplicate 'row.names' are not allowed I can upload my file if needed I've spent days trying to get this to work, so any help will be appreciated 回答1: You may want to put "RaceID" into the alt.levels argument instead of alt.var . From the mlogit.data help file: alt.levels the name of the alternatives: if null, for a

问题 I have a doubly linked list in which it stores player objects. The player object contains first name, last name, level and experience. Im trying to create a function that will remove a duplicate player object. For instance, if I enter Luis suarez and then he is entered again, I want the function to ask the user to enter the duplicates name and delete one of the luis suarez players (preferably the one last in the list). I've tried many things and none of them work nor delete anything. Can

问题 I need a query that will search for all records in a table and return only the ones that have 2 or more values that end with same 4 digits, but i dont have specific four digits i can give you, i just need it to find everything that has more than one value that ends the same. eg. table has: person_number------------name ============================== 1234567------------------john 00004567-----------------mark 9999999------------------mike 0009999------------------lidia 10101010----------------

问题 Suppose you have something like: task zip(type: Zip) { archiveName = "out.zip" duplicatesStrategy = 'exclude' into('TARGET_FOLDER_IN_ZIP') { from("$rootDir/customizations/folder1") from("$rootDir/customizations/folder2") } } According to http://www.gradle.org/docs/current/javadoc/org/gradle/api/file/DuplicatesStrategy.html Exclude means Do not allow duplicates by ignoring subsequent items to be created at the same path. So if you have the same filename in folder1 & folder2 only the file from

问题 I am trying to extract from my R dataframe, rows that have duplicate values in one column but which in another column have either a 0 or a 1. For example, if this is the dataframe: Data <- data.frame( + X = c(1,3,5,7,7,8,9,10,10,11,11), + Y = sample(36476545:36476555), + timepoint = c(0,1,0,0,1,1,0,1,0,1,1) + ) which looks like > Data X Y timepoint 1 1 36476549 0 2 3 36476545 1 3 5 36476552 0 4 7 36476547 0 5 7 36476546 1 6 8 36476548 1 7 9 36476551 0 8 10 36476555 1 9 10 36476553 0 10 11

问题 I'm new in prolog language i do my researching to find how to do sum in prolog and i did it, but i didn't find any source how to remove duplicate from a list and do sum. the sum code i have is this sum([], 0). sum([H|T], N):- sum(T, X), N is X + H. but i need to do sum unique number in a list, but i don't know how to do it. Such as i have a list ?- Sum([1,2,3,3],U) // removing duplicate of 3. U = 6 can you help me understanding how to do unique number with sum? is my rule good? or do the

问题 In the function sqlPull() I pull the most recent 5 entries from a MySQL database every 5 seconds. In the second function dupCatch() I am attempting to remove duplicates that would in the n+1 SQL pull when compared to n. I want to save only the unique list of tuples, but right now the function is printing the same list of tuples 5 times every five seconds. In english what I am attempting to do with dupCatch() is take the data from sqlPull(), initialize and empty list and say for all of the

问题 I know theres a lot about removing duplicates but I can't seem to get it right, I was wondering if anyone could tell me what I am doing wrong. So the code below contains a nested for loop where it traverses through a image (that is a made of a matrix of size 256x256) then it is passed to ImagePlus to calculate the radius, theta and value. The problem is that in radius there are duplicates and I want to for every duplicate to sum up the value like this: ...... r=1.44 mm/c (167), value=63 r=1

问题 So, recently I am working on a small social network, and I stuck at a beginner-fail :( When a new User is created, a new FOLDER - named like the User - is created in the current folder (/Users). In the current folder(/Users) is also a folder named PATTERN, where a index.php is included. When a new user is created with mkdir($Username, 0777) I also want to COPY the index.php from the PATTERN-Folder (/PATTERN) into the new User folder (/$Username). It just doesn't copy in my tries - how would