# Questions tagged [sum]

2020欧洲杯时间表 The 'sum' function which returns the sum of the items in an array.

11,526
questions

**0**

votes

**1**answer

15 views

### Simple matrix operations in fortran90 won't work as expected? [closed]

All I'm trying to do is A = bC + dE, where lowercase letters are scalars and uppercase are matrices, all with the same shape. bC and dE calculate correctly, but for some reason I can't assign them to ...

**0**

votes

**0**answers

19 views

### VBA: Sum of values in a range to Label.caption is always 0

I might be not understanding something here. I try to look for the last row in a datasheet and sum up a range. But for some reason it spits out 0, for both values (there are numbers in the cells.). ...

**1**

vote

**1**answer

19 views

### How do I get Sum of a column in Ms Access database using Java?

I want to take the value of total sum of a column and display it in a textfield.
I used this code but it's not working.
public static String invoice() throws SQLException{
Connection con = ...

**3**

votes

**2**answers

58 views

### sum values in 2 JSON objects from 2 files

I am using jq tools to merge 2 json files but there are some duplicate keys, and I would like for the duplicate keys to sum their values.
Here are the files:
file1:
{
"total": {
"seconds": ...

**0**

votes

**0**answers

20 views

### How to find contiguous subarray with maximum sum(modified addition)

I have an array of 35 digit numbers from 0to9.The task is to find the continuous subarray with largest circular sum of corresponding digits of all numbers in that subarray.
Here, circular sum of ...

**0**

votes

**1**answer

45 views

### SQL multiple tables join problem with SUM Results Multiples times Higher Value

I want to join these 4 tables
tblretailer
tbldraw
Tbl_ABC
Tbl_ABACBC
'tblretailer ' is the main table. Sample data from 'tblratailer' looks like this:
+----+---------------------+-------------+-----...

**0**

votes

**1**answer

18 views

### Pandas mean vs sum/len

So this really baffled me. I was playing around with this Kaggle dataset using pandas to learn statistics. I tried to calculate the mean of a column by using Series.sum()/len(Series), but then I ...

**-1**

votes

**0**answers

27 views

### Am I using SUM and COUNT wrong with my CASE request of the SELECT query (Teradata SQL)?

I have looked up the first 5-10 threads that came up when searching for terms SQL, SUM, COUNT, CASE and haven't yet found an answer that fits.
SELECT TOP 10 str.city, str.state, s.dept, s.brand,
...

**0**

votes

**1**answer

14 views

**-3**

votes

**0**answers

29 views

### draw this triangle using c++ , and its recommended to use 1-D array [closed]

See The photo here
Draw the following triangle using c++ , where the user enters number of rows . as it is clear , the number is the summation of the two numbers above ,
Write the code that draw this ...

**0**

votes

**1**answer

28 views

### summing probability elements based on specific conditions from its associated list python

I have 4 lists and 2 of them have a one to one association, and Im using the other two to impose conditions. The A list is just a lists of things, while B is a list of 'probabilities' associated with ...

**-1**

votes

**0**answers

34 views

### SQL multiple tables join problem with SUM values are incorrect with my code

I want to join these 4 tables
tblretailer
tbldraw
Tbl_ABC
Tbl_ABACBC
tblretailer is the main table. Sample data from tblratailer looks like this:
Sample data for tbldraw:
Sample data for Tbl_ABC:
...

**1**

vote

**1**answer

25 views

### Sum, Average of elements and Count the occurence of elements in Lists in Prolog

how can I write three predicates in Prolog that do the following things:
1) Define the sum (X, N) predicate, which is true when N is the sum of integers from the list X.
2) Define the avg (X, N) ...

**0**

votes

**0**answers

26 views

### How to get the sum of a specific column from database in django? [duplicate]

I have written code like this but it is not working. My db column is charfiled
I get this error:
No function matches the given name and argument types. You might need to add explicit type casts.
...

**0**

votes

**1**answer

19 views

### Python: How do I sum integer values in a dictionary? [duplicate]

I am trying to write a simple program that takes a dictionary (inventory) of {item: integer}, and then sums the integer values of all the keys.
Currently, this is what I have, and it isn't working:
...