conditional-statements

问题 I have lists of users with his points and game id. I need to find the rank of the specified user based on the game order by the max(lb_point). I have already done the query for getting the rank based on individual game as follows. select count(*) AS user_rank from ( select distinct user_id from leader_board where lb_point >= (select max( lb_point ) from leader_board where user_id = 1 and game_id = 2 ) and game_id = 2 ) t But i need to find the rank based on the overall game. Example i have 3

问题 I'm working on a program that is a guessing game. However the loop for identifying whether an individual guessed the correct number fails to even begin I get this: Player 1: Type a number between 0 and 99 and press return: 1 Type the number of guesses that player 2 gets and press return: 1 Sorry you are out of guesses. You lose. The loop terminates before it even begins and I can't figure out how to make it work. This is the code for the loop: printf( "Type the number of guesses that player 2

问题 I have a dataframe like so: rel <- c(2, 5, NA, 3, 6) year.in <- c(4, NA, 2, 3, 2) year.out <- c(6, 7, NA, 5, 4) year.1 <- c(NA, NA, NA, NA, NA) year.2 <- c(NA, NA, NA, NA, NA) year.3 <- c(NA, NA, NA, NA, NA) year.4 <- c(NA, NA, NA, NA, NA) year.5 <- c(NA, NA, NA, NA, NA) df <- as.data.frame(cbind(rel, year.in, year.out, year.1, year.2, year.3, year.4, year.5)) What I would like to do is update the missing values in year.1 - year.5 with the value of 'rel', but only if: (year.in >= year.i AND

问题 I have a table called purchase_hs and I have different types of level dates and different types of transport modes and quantity like below. Now my requirement is I need to consider only one level date column per row. Suppose if we have level1 and remaining all are empty then we need to add 28 days based on the transport mode ( sea = 28days , air =14 days , truck = 5 days and transport mode is empty then 28 days) and display the level1 date quantity. If we have level1 date and level2 date and

问题 i have this function to play music with web audio API: function playMusic(){ if(countPre<count ){ audio0.play(); audio0.src = '0.mp3'; audio0.controls = true; audio0.autoplay = true; audio0.loop = true; source = context.createBufferSource(); source.connect(analyser); analyser.connect(context.destination); } else{audio0.pause();} } However, the value of count and countPre are generated in a loop that runs 10 times per second. I have to put the function playMusic inside that loop in order to

问题 I use a plugin with Jenkins to execute a job with a condition step . I want to check if the parameter that I use is empty with this regular expression : ^$ And the label field : ${ENV,var="date.test"} If the parameter is empty the job continue, but if has value it stop. But that does the opposite that I want. 回答1: I've tried Regular Expression: ${ENV,var="date.test"} with an empty label and it works. 来源： https://stackoverflow.com/questions/31424679/regex-jenkins-check-empty-variable

问题 I would like to know how to run a different select statement based on condition in Hive SQL. The following query does not work but throws an error. Error while compiling statement: FAILED: ParseException line 4:2 cannot recognize input near '(' 'SELECT' '1' in expression specification SELECT CASE WHEN '${UN}'!= '' THEN ( SELECT * from table1 t WHERE t.yymmddval BETWEEN '${D1}' AND '${D2}' AND t.un in ('${UN}') ) ELSE ( SELECT * from table1 t WHERE t.yymmddval BETWEEN '${D1}' AND '${D2}' AND t

问题 I tried far to long to solve this problem and did not find anything useful on the Internet so I have to ask: Given a tensor T , let's say T = tf.random_normal([100]) , I want to apply softmax() only to the positive elements of the tensor. Something like T = tf.nn.softmax(T[T>0]) which of course does not work in Tensorflow. In short: I want to compute softmax and applied only on elements T > 0 . How can I do that in Tensorflow? 回答1: If you want softmax computed + applied only to elements T > 0

问题 I have a String "a>b" and I want to convert into a normal conditional expression. How to do this in Android means using only JSE. String abc = "a>10"; if(abc){ // TO SOME TASK } Any help will be appreciated. Thank You in advance! 回答1: I would recommend using a "helper" method that returns a boolean result, so the statement would look something like this String abc = "a>10"; if(stringToConditional("a>b")) { //TO SOME TASK } private boolean stringToConditional(String str) { //code here } From

问题 I have a search function, which works great for staff, so I can search by name. Now, I want filter staffs by staffgroup.groupname, but unfortunatelly i get this error: Column not found: 1054 Unknown column 'staffgroups.groupname' in 'where clause' I'm having the following tablelayout staffs (a person can belong to many groups) staff_staffgroups (HABTM-linking table) staffgroups (has a groupname) i used the conditions as follows: $tmpConditions['AND'][] = array('Staff.isActive =' => "1");