형태소 parse for ElasticSearch https://esbook.kimjmin.net/06-text-analysis/6.7-stemming/6.7.2-nori    
형태소 parse for Mysql https://ariswear.tistory.com/25
https://grip.news/archives/1538

 

https://hoing.io/archives/16854

 

MySQL FullText Search 전문검색 기능 (2) - N-gram - MeCab (은전한닢)

 

hoing.io

 

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시스템 변수 속성  
cmd-line  command-line options
option-file options valid in configuration files
System Var server system variables
Status Var status variables
Var Scope Global / Session / Both
Dynamic Dynamic / Static

 

 

SELECT
         VI.VARIABLE_NAME, GV.VARIABLE_VALUE,
         VI.MIN_VALUE,VI.MAX_VALUE, VI.set_time, VI.SET_USER, VI.SET_HOST
       FROM performance_schema.variables_info AS VI
         INNER JOIN performance_schema.global_variables AS GV
         USING(VARIABLE_NAME)
       WHERE VI.VARIABLE_NAME like 'max_conn%'
       ORDER BY VARIABLE_NAME;

 

https://dev.mysql.com/doc/refman/8.0/en/server-system-variable-reference.html

 

MySQL :: MySQL 8.0 Reference Manual :: 5.1.5 Server System Variable Reference

MySQL 8.0 Reference Manual  /  ...  /  MySQL Server Administration  /  The MySQL Server  /  Server System Variable Reference PREV   HOME   UP   NEXT

dev.mysql.com

 

 

https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html

 

MySQL :: MySQL 8.0 Reference Manual :: 5.1.8 Server System Variables

 

dev.mysql.com

 

https://dev.mysql.com/doc/refman/8.0/en/performance-schema-variables-info-table.html

 

MySQL :: MySQL 8.0 Reference Manual :: 27.12.14.2 Performance Schema variables_info Table

27.12.14.2 Performance Schema variables_info Table The variables_info table shows, for each system variable, the source from which it was most recently set, and its range of values. The variables_info table has these columns: VARIABLE_NAME The variable na

dev.mysql.com

 

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global variables

 

 

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Features from community MySQL 8.0

The initial release of Aurora MySQL version 3 is compatible with community MySQL 8.0.23. MySQL 8.0 introduces several new features, including the following:

  • JSON functions. For usage information, see JSON Functions in the MySQL Reference Manual.
  • Window functions. For usage information, see Window Functions in the MySQL Reference Manual.
  • Common table expressions (CTEs), using the WITH clause. For usage information, see WITH (Common Table Expressions) in the MySQL Reference Manual.
  • Optimized ADD COLUMN and RENAME COLUMN clauses for the ALTER TABLE statement. These optimizations are called "instant DDL." Aurora MySQL version 3 is compatible with the community MySQL instant DDL feature. The former Aurora fast DDL feature isn't used. For usage information for instant DDL, see Instant DDL (Aurora MySQL version 3).
  • Descending, functional, and invisible indexes. For usage information, see Invisible Indexes, Descending Indexes, and CREATE INDEX Statement in the MySQL Reference Manual.
  • Role-based privileges controlled through SQL statements. For more information on changes to the privilege model, see Role-based privilege model.
  • NOWAIT and SKIP LOCKED clauses with the SELECT ... FOR SHARE statement. These clauses avoid waiting for other transactions to release row locks. For usage information, see Locking Reads in the MySQL Reference Manual.
  • Improvements to binary log (binlog) replication. For the Aurora MySQL details, see Binary log replication. In particular, you can perform filtered replication. For usage information about filtered replication, see How Servers Evaluate Replication Filtering Rules in the MySQL Reference Manual.
  • Hints. Some of the MySQL 8.0–compatible hints were already backported to Aurora MySQL version 2. For information about using hints with Aurora MySQL, see Aurora MySQL hints. For the full list of hints in community MySQL 8.0, see Optimizer Hints in the MySQL Reference Manual.

 

https://dev.mysql.com/blog-archive/the-complete-list-of-new-features-in-mysql-8-0/

 

MySQL :: The complete list of new features in MySQL 8.0

There are over 300 new features in MySQL 8.0. The MySQL Manual is very good, but verbose. This is a list of new features in short bullet form. We have tried very hard to make sure each feature is only mentioned once. Note the similar list for MySQL 5.7. Pl

dev.mysql.com

 

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Updates.3010.html

 

Aurora MySQL database engine updates 2021-11-18 (version 3.01.0, compatible with MySQL 8.0.23) - Amazon Aurora

Thanks for letting us know this page needs work. We're sorry we let you down. If you've got a moment, please tell us how we can make the documentation better.

docs.aws.amazon.com

 

 

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.MySQL80.html

 

 

Aurora MySQL version 3 compatible with MySQL 8.0 - Amazon Aurora

The configuration parameters related to internal temporary tables apply differently to the writer and reader instances in your cluster. For reader instances, Aurora MySQL always uses the TempTable storage engine and a value of 1 for temptable_use_mmap. The

docs.aws.amazon.com

 

 

 

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convert(aaa using utf8)

 

cast(aaa as char)

 

 

select convert(externalVendorId using utf8) from skus;

select cast(externalVendorid as char) from skus;

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convert(aaa using utf8)

 

cast(aaa as char)

 

 

select convert(externalVendorId using utf8) from skus;

select cast(externalVendorid as char) from skus;

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SHOW VARIABLES LIKE '%version%';

 

admin_tls_version TLSv1,TLSv1.1,TLSv1.2,TLSv1.3
immediate_server_version 999999
innodb_version 8.0.22
original_server_version 999999
protocol_version 10
slave_type_conversions  
tls_version TLSv1,TLSv1.1,TLSv1.2,TLSv1.3
version 8.0.22
version_comment MySQL Community Server - GPL
version_compile_machine x86_64
version_compile_os Linux
version_compile_zlib 1.2.11

 

SELECT VERSION();

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server start

systemctl start mysqld
systemctl stop mysqld

server connect

mysql -uroot -p --host=127.0.0.1 --port=3306
mysql -h127.0.0.1 -uroot -p

 

port check

telnet 10.10.10.2 3306
nc 10.10.10.2 3306
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https://hub.docker.com/_/mysql

 

Mysql - Official Image | Docker Hub

We and third parties use cookies or similar technologies ("Cookies") as described below to collect and process personal data, such as your IP address or browser information. You can learn more about how this site uses Cookies by reading our privacy policy

hub.docker.com

 

 

https://dev.mysql.com/doc/mysql-installation-excerpt/5.7/en/

 

MySQL :: MySQL Installation Guide

The world's most popular open source database

dev.mysql.com

 

 

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https://www.mysql.com/products/community/

 

MySQL :: MySQL Community Edition

MySQL Community Edition MySQL Community Edition is the freely downloadable version of the world's most popular open source database. It is available under the GPL license and is supported by a huge and active community of open source developers. The MySQL

www.mysql.com

 

https://dbknowledge.tistory.com/59

 

MySQL Community / MySQL 상용 Edition 차이

해당 페이지에서는 MySQL Community / MySQL Enterprise Edition 간에 기능 차이에 대해서 다룬다. 참조 사이트 https://ko.wikipedia.org/wiki/MySQL_AB https://www.mysql.com/products/enterprise/ MySQL Commu..

dbknowledge.tistory.com

 

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mysql version  
8.0 MySQL Server 8.0 was announced in April 2018
5.7 The general availability of MySQL 5.7 was announced in October 2015
5.6 The general availability of MySQL 5.6 was announced in February 2013
5.5 generally available as of December 2010
5.1 production release 27 November 2008
   

 

 

https://en.wikipedia.org/wiki/MySQL

 

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