Home Database Mysql Tutorial 关于SqlServer四大排名函数NTILE()函数的问题

关于SqlServer四大排名函数NTILE()函数的问题

Jun 07, 2016 pm 03:39 PM
sqlserver about function Ranking question

我了解到的NTILE() 函数 的分组依据如下: 1、每组的记录数不能大于它上一组的记录数, 也就是说,第1组中的记录数只能大于等于第2组及以后各组中的记录数。 2、所有组中的记录数要么都相同,要么从某一个记录较少的组开始后面所有组的记录数都与该组的记录

  我了解到的NTILE()函数的分组依据如下:

  1、每组的记录数不能大于它上一组的记录数,也就是说,第1组中的记录数只能大于等于第2组及以后各组中的记录数。

  2、所有组中的记录数要么都相同,要么从某一个记录较少的组开始后面所有组的记录数都与该组的记录数相同。

 

  问题

  数据总数有54条,使用NTILE()函数分成5组,结果如下:11 11 11 11 10

  总数据若有53条,分成5组结果为:11 11 11 10 10  为什么不是 11 11 11 11 9 ?

  在线等,知道的各位园友帮忙解答一下,感激!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What is the difference between mysql and sqlserver syntax What is the difference between mysql and sqlserver syntax Apr 22, 2024 pm 06:33 PM

The syntax differences between MySQL and SQL Server are mainly reflected in database objects, data types, SQL statements and other aspects. Database object differences include the storage engine and how filegroups are specified, and the creation of indexes and constraints. Data type differences involve differences in numeric types, character types, and date and time types. SQL statement differences are reflected in result set limitations, data insertion, update and delete operations, etc. Other differences include how identity columns, views, and stored procedures are created. Understanding these differences is important to avoid errors when using different database systems.

Tips for dynamically creating new functions in golang functions Tips for dynamically creating new functions in golang functions Apr 25, 2024 pm 02:39 PM

Go language provides two dynamic function creation technologies: closure and reflection. closures allow access to variables within the closure scope, and reflection can create new functions using the FuncOf function. These technologies are useful in customizing HTTP routers, implementing highly customizable systems, and building pluggable components.

Considerations for parameter order in C++ function naming Considerations for parameter order in C++ function naming Apr 24, 2024 pm 04:21 PM

In C++ function naming, it is crucial to consider parameter order to improve readability, reduce errors, and facilitate refactoring. Common parameter order conventions include: action-object, object-action, semantic meaning, and standard library compliance. The optimal order depends on the purpose of the function, parameter types, potential confusion, and language conventions.

How to write efficient and maintainable functions in Java? How to write efficient and maintainable functions in Java? Apr 24, 2024 am 11:33 AM

The key to writing efficient and maintainable Java functions is: keep it simple. Use meaningful naming. Handle special situations. Use appropriate visibility.

Where is the navicat database file? Where is the navicat database file? Apr 23, 2024 am 10:57 AM

The location where the Navicat database configuration files are stored varies by operating system: Windows: The user-specific path is %APPDATA%\PremiumSoft\Navicat\macOS: The user-specific path is ~/Library/Application Support/Navicat\Linux: The user-specific path is ~/ .config/navicat\The configuration file name contains the connection type, such as navicat_mysql.ini. These configuration files store database connection information, query history, and SSH settings.

Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters Apr 21, 2024 am 10:21 AM

The advantages of default parameters in C++ functions include simplifying calls, enhancing readability, and avoiding errors. The disadvantages are limited flexibility and naming restrictions. Advantages of variadic parameters include unlimited flexibility and dynamic binding. Disadvantages include greater complexity, implicit type conversions, and difficulty in debugging.

Complete collection of excel function formulas Complete collection of excel function formulas May 07, 2024 pm 12:04 PM

1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.

What is the difference between custom PHP functions and predefined functions? What is the difference between custom PHP functions and predefined functions? Apr 22, 2024 pm 02:21 PM

The difference between custom PHP functions and predefined functions is: Scope: Custom functions are limited to the scope of their definition, while predefined functions are accessible throughout the script. How to define: Custom functions are defined using the function keyword, while predefined functions are defined by the PHP kernel. Parameter passing: Custom functions receive parameters, while predefined functions may not require parameters. Extensibility: Custom functions can be created as needed, while predefined functions are built-in and cannot be modified.

See all articles