1.索引的分类 B-Tree 基本支持 HASH 只有memory支持 R-Tree myisam支持 Full-text myisam支持(全文索引)2.Memory引擎下只有“=”条件才会使用索引=============================== 导入数据的优化 ========================3.如何提高myisam的导入效率 alter table emp disable keys;关闭索引 load data infile 'aa.sql' into table emp;导入数据到emp alter table emp enable keys;开启索引 4.如何提高innodb的导入效率 导入的数据按照主键的顺序排列即可5.导入数据前关闭唯一性检查 set unique_checks = 0 ; load data infile .... set unique_checks = 1 ; 开启检查=============================== Insert 的优化 ========================1.使用多值插入 insert into emp values (1,2,3),(1,2,3),.....=============================== 分页 的优化 ==========================1.使用inner join内联2.应用程序端做处理,大概思路就是记录上一页的最后一条记录的id是多少,下一页就以这个id为起始值 但这个必须保证id为唯一性

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)


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