1. 服务器部署的时候 php artisan cache:clear php artisan session:clear php artisan views:clear 优化路由加载:php artisan route:clear 优化配置加载:php artisan config:clear 优化自动加载: composer install --optimize-autoloader 2. 解... 问答精选 ...
Check if a session is dirty but don't flush I'm sure I've seen this discussed, but I must not be using the right keywords because I can't find anything on it now: I have a desktop application using NHibernate persistence. I'd like to use the se... ...
2.5.derived:派生表,在 FROM 子句的查询语句,表示从外部数据源中推导出来的,而不是从 SELECT 语句中的其他列中选择出来的。 set session optimizer_switch='derived_merge=off'; #关闭MySQL5.7对衍生表合并优化 explain select * from (select user_id from orders where id = 1) as temp; set session optimi...
set session optimizer_switch='derived_merge=off'; 关闭mysql对衍生表的合并优化,我们先看下不关闭之前,我们执行如下sql的情况: explain select (select 1 from actor where id = 1) from (select * from film where id = 1) der; 发现查询类型没有derived,我们关闭优化看下set session optimizer_switch='d...
mysql>explain select (select 1 from actor where id = 1) from (select * from film where id = 1) der;mysql> set session optimizer_switch='derived_merge=on'; #还原默认配置 分析SQL的执行顺序: 先执行 film 表的查询 --> 再执行 actor 表的查询 --> 最后再执行生成的临时表查询; ...
1 使用方式 set session optimizer_trace= “enabled=on”; 然后执行你要分析的SQL, 再执行SELECT trace FROM information_schema.OPTIMIZER_TRACE;就可查看SQL的Optimizer Trace信息 DEMO: set session optimizer_trace= “enabled=on”; selectfrom actor ; ...
REPLICATION CLIENT ON *.* TO `monuser`@`%` | +---+ 1 row in set (0.00 sec) How to repeat: Session1: mysql> select * from Employee;select sleep (30); Session2: mysql> show processlist; +---+---+---+---+---+---+---+---...
Reporter:Valeriy KravchukEmail Updates: Status:ClosedImpact on me: None Category:MySQL Server: DocumentationSeverity:S3 (Non-critical) Version:5.6OS:Any Assigned to:Paul DuBoisCPU Architecture:Any Tags:missing manual,performance_schema,session_connect_attrs ...
方法1:将php.ini中的session.gc_maxlifetime设置为9999,重启apache 方法2: test 方法3: test 如何取得一个网页或文件的内容 方法1:(对于php5及更高版本) test 方法2: test 如何取得一个网页或文件的内容 方法1:(对于php5及更高版本) test 方法2: ...
GetFiles The network BIOS session limit was exceeded. Directory.Move "Could not find part of the path" exception directoryEntry Properties list DirectorySearcher filter to find OUs and Users cn DirectX in a Window form with controls!!! disable close button in console application in c# Disable ...