Home > Developer Tools > MySQL Tutorials

Simple mysql packet statistics statement instance code

Source: Internet
Author: User
Keywords Network programming Mysql tutorial
Tags code how many mysql mysql tutorial name network network programming programming
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Simple mysql tutorial grouping statistics statement instance code
/ *
id name code_id code_name is_true score
1 Zhang San 1 handsome is 5
2 Zhang San 2 lavish is 4
3 Zhang San 1 handsome is 4
4 Zhang San 2 lavish no 3
5 Li Si 1 handsome is 5
6 Li Si 2 lavish is 3

Look at an example
mysql how to group statistics by name: [handsome] how many "yes" and "no", "lavish" how many "yes" and "no", and how many [score]

* /

select name,
sum (if (code_name = 'handsome' and is_true = 'yes', 1,0)),
sum (if (code_name = 'handsome' and is_true = 'no', 1,0)),
sum (if (code_name = 'lazy' and is_true = 'yes', 1,0)),
sum (if (code_name = 'lazy' and is_true = 'no', 1,0)),
count (*)
from table1
group by name

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
mysql statistics mysql instance mysql query statistics mysql update statistics update statistics mysql mysql index usage statistics mysql database statistics
Related Article
5 Steps to Migrate from MySQL to MariaDB Database
Install MySQL 8.0.11 on the Ubuntu 18.04 / 16.04 Command line
Steps to install MariaDB 10.4 on Ubuntu 18.04 system
Solve the MySQL does not allow remote access method
23 considerations for using MySQL database
Mysql command to import sql data backup method

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

Hot Article
Hot Tags
computing conference access forum computer class data get http html applications
Popular Keywords
html add blank space register business logo register ssl certificate full site sign in sign up node js build cloud register register a subdomain in python network management system tutorial how to learn computer science by myself

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More