counting

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Counting how many times a value appeared

I am using SELECT DISTINCTname FROM table to get a table with distinct names that appear in the column. How can i get an 开发者_如何学编程extra column returning the number of times that this specific[详细]

2023-04-05 00:29 分类：问答
Counting non-empty values in each column of a table

I am looking for missing data in a data migration project, and this report will help me immensely. Given a MySQL table, I would like to count all the empty (NULL or \'\') valu开发者_运维知识库es in e[详细]

2023-03-31 00:46 分类：问答
JavaScript calculating length of a string

Why when I try this block of code: var str = \"1234\"; alert(str.toString().lenght); it alerts开发者_C百科 me \'undefined\' ?You misspelled length. It\'s \"length\":[详细]

2023-03-30 08:52 分类：问答
Reading line count using VB.NET

How to calculate the number of rows in a file which we have uploaded. The file might be either a text file or a CSV or Exce开发者_开发技巧l file.[详细]

2023-03-23 03:27 分类：问答
Counting digit occurrences

This problem is really confusing me; we\'re given two integers A, B, we want to count occurrences of digits in the range [A, B]. I though that if we could count the num开发者_开发技巧ber of digit occu[详细]

2023-03-19 10:52 分类：问答
Finding the number of digits of an integer

What is the best method to find the number of digits of a positive integer? I have found this 3 basic methods:[详细]

2023-03-19 04:44 分类：问答
Counting digits using while loop

I was recently making a program which needed to check the number of digits in a number inputted by the user. As a result I made the following code:[详细]

2023-03-18 06:53 分类：问答
Combinatorics or another approach? [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow.[详细]

2023-03-17 01:58 分类：问答
Convert/cast CFReadStreamRef to NSInputStream (iOS5)

I am trying to port my app to iOS5. I am using a TCP connection to a server via CFSockets. My problem now is the conversion (cast) from CFReadStreamRef to NSInputStream (same with write). With iOS4 I[详细]

2023-03-13 20:40 分类：问答
Counting regex pattern matches in one line using sed or grep?

I want to count the number of matches there is on one single line (or all lines as there always will be only one line).[详细]

2023-03-09 14:52 分类：问答