MySQL的系统变量max_execution_time小结
参数介绍: MySQL社区版MySQL 5.7.8开始,新增了MAX_EXECUTION_TIME这个系统变量,它用来限制SQL语句的执行时间,确切来说是限制只读SELECT语句。如果查询语句的执行时长超过这个阈值,MySQL将... 2025-03-18 22:22:44MySQL 8.0 Reference Manual(读书笔记59节--Controlling t
MySQL provides optimizer control through system variables that affect how query plans are evaluated, switchable optimizations, optimizer and index hin... 2025-03-18 22:22:43MySQL 8.0 Reference Manual(读书笔记58节--Understanding
Depending on the details of your tables, columns, indexes, and the conditions in your WHERE clause, the MySQL optimizer considers many techniques to e... 2025-03-18 22:22:39MySQL 8.0 Reference Manual(读书笔记57节--Optimizing fo
InnoDB is the storage engine that MySQL customers typically use in production databases where reliability【rɪˌlaɪə'bɪləti 可靠性;】 and concurrency【并发;... 2025-03-18 22:22:27MySQL 8.0 Reference Manual(读书笔记56节--Optimizing Da
In your role as a database designer, look for the most efficient way to organize your schemas, tables, and columns. As when tuning application code, y... 2025-03-18 22:22:15