Advertisements I have 3 tables named students, student_courses and grades. And for each student I need to calculate their overall GPA. So I’m a bit stuck. 🙁 students table student_id student_name 77 Pepe LePew student_courses student_id course_id percent_grade 77 101 95.7 77 202 85.9 77 303 77.1 77 404 66.6 grades from_percent to_percent letter_grade GPA… Read More Using the SUM() in the ON Clause of the Join
Advertisements From LeetCode, the definition of the "Two Sum Problem" is: Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You… Read More How does this seemingly random bit of string solve the TwoSum problem?
Advertisements How to sum filter using conditions in multiple columns A B C D Ben 1 Tom 1 Joe 3 Ben 4 Tom 2 Ben 1 I want to get the sum of B,D where A,C does not equal Joe…basically get everyone’s hours except Joes. update: f you on the negative score…the system does not… Read More Combining filters between multiple columns
Advertisements in Excel I have a few cells containing numbers sperated bij a dash, like: I use a formula like =TRIM(TEKSTBEFORE(G30:G40;"/";1)) >Solution : Try using TEXTSPLIT() • Formula used in cell B1 =SUM(–TEXTSPLIT(A1," / ")) Or, =MAP(A1:A7,LAMBDA(φ, SUM(–TEXTSPLIT(φ," / ")))) Edit: As OP Commented: Sorry, I think I’m not clear enough. I have to sum… Read More Excel SUM parts of a string
Advertisements How do I sum the count of populated fields. An example of the data. The desired output would be. This is what I have managed so far. select m.project_ref, ( select count(*) from (values (m.[EWI/IWI]), (m.Glazing), (m.Solar), (m.CWI), (m.Boiler), (m.TRV), (m.LI), (m.RIRI), (m.UFI), (m.ASHP)) as v(col) where v.col <> ” ) as ‘msr_cnt’ from… Read More SQL sum the count of populated fields grouped by another field
Advertisements Key error "not in index" when sum a list of columns in pandas I have a dataframe with about 100 columnns. I want to create a new column with sum of some my columns and i have a list with names of columns to sum. For example, my columns are: ‘Col1’, ‘Col2’, ‘Col3’, …… Read More Key error "not in index" when sum a list of columns in pandas
Advertisements Get a column with total sale by each agent and second column with total sale for company as well in each row I have 3 tables, queries added below for table schemas and data. I want to get total sales by each agent, but for each row I also need the total sales by… Read More How to get total sale by each agent with company total sale in each row using MySQL join and group by?
Advertisements I would like to sum up two vectors, in a way that: A = seq(10, 30, 10) B = seq(1, 6, 1) C = c() for (i in B) { for (j in A) C = c(j + i) } C would be a vector with all results appearing from: for (i in B)… Read More How to sum up in two vector without overriding the results
Advertisements I want to make an array out of sum of positive numbers in row, but my code counts negative elements if they’re standing in first column. Can I get some help with this please? My code: <!DOCTYPE html> <html> <head> <title>Document</title> </head> <body> <div id="result-container"></div> <script> let myArray = [3]; for (let i =… Read More Create an array from sum of positive elements from rows in matrix
Learn how to calculate the check digit according to ISO 6346 for shipping containers. Prevent errors in tracking and documentation with this simple algorithm.… Read More JavaScript : How to Calculate the Check Digit according to ISO 6346
