function html_encode(str) { var s = ""; if (str.length == 0) return ""; s = str.replace(/&/g, "&"); s = s.replace(/</g, "<"); s = s.replace(/>/g, ">"); //s = s.replace(/ /g, " &quo…

MySQL 中 character set 与 collation 的理解 出处:https://www.cnblogs.com/EasonJim/p/8128196.html 推荐: 编码使用 uft8mb4,不使用 utf8(utf8会有一些问题) utf8_general_ci 与 utf8_unicode_ci 区别 utf8_unicode_ci 和 utf8_general_ci,对中文.英文来说没有实质的差别,用 utf8_general_ci 就可以(因为:utf8_genera…

character set 和 collation 的是什么? character set, 即字符集. 我们常看到的 utf-8, GB2312, GB18030 都是相互独立的 character set. 即对 Unicode 的一套编码. 如何理解 unicode 与 utf-8, GB2312 的区别呢?打个比方,你眼前有一个苹果,在英文里称之为 apple, 而在中文里称之为苹果.苹果这个实体的概念就是 unicode , 而 utf-8, GB2312 可以认为就是不同语言对苹果的…

character_set_server collation_servercharacter_set_databasecollation_database character_set_clientcharacter_set_results character_set_connection <===character_set_clientcollation_connection skip-character-set-client-handshake client (character_set_cl…

character set和collation的是什么? character set即字符集 我们常看到的UTF-8.GB2312.GB18030都是相互独立的character set.即对Unicode的一套编码. 那么如何理解Unicode与UTF-8.GB2312的区别呢? 打个比方,你眼前有一个苹果,在英文里称之为apple,而在中文里称之为苹果. 苹果这个实体的概念就是Unicode,而UTF-8,GB2312可以认为就是不同语言对苹果的不同称谓,本质上都是在描述苹果这个物. col…

http://mysql.rjweb.org/bestof.html I have tagged many of the better forum threads. 'Better' is based on how good I thing the answer was. (<bias> I wrote many, but not all, of the better answers. </bias>) -- Rick James, MySQL Geek The Best of t…

MySQL Name mysql - the MySQL command-line tool Synopsis mysql [options] db_name Description mysql is a simple SQL shell with input line editing capabilities. It supports interactive and noninteractive use. When used interactively, query results are p…

  Preface       Connection security is  one of the most important safety strategies which we should consider.It's not a good manner using plaintext password in my.cnf file when connecting mysql server by client.What can we do more safely?   Introduce…

A Quick Guide to Using the MySQL Yum Repository Abstract The MySQL Yum repository provides RPM packages for installing the MySQL server, client, and other components on Linux platforms. The packages also upgrade and replace any third-party MySQL pack…

5.76中加了一些passwd的策略 MySQL's validate_password plugin is installed by default. This will require that passwords contain at least one upper case letter, one lower case letter, one digit, and one special character, and that the total password length is a…