文章列表
SQL why is SELECT COUNT(*) , MIN(col), MAX(col) faster then SELECT MIN(col), MAX(col)(SQL 为什么 SELECT COUNT(*) , MIN(col), MAX(col) 比 SELECT MIN(col), MAX(col) 快)
Calculating the Median with Mysql(用 Mysql 计算中位数)
How to select standard deviation within a row? (in SQL - or R :)(如何选择一行内的标准差?(在 SQL - 或 R :))
MySQL increment user variable when value changes(MySQL在值更改时增加用户变量)
Biased random in SQL?(SQL中的有偏随机?)
Are statistics automatically updated when a new index is created?(创建新索引时是否会自动更新统计信息?)
Laravel MySql DB Connection with SSH(使用 SSH 的 Laravel MySql 数据库连接)
Foreign keys in Laravel 4 migrations issue(Laravel 4迁移问题中的外键)
laravel 4 - how to Limit (Take and Skip) for Eloquent ORM?(laravel 4 - 如何限制(采取和跳过)雄辩的 ORM?)
Import of 50K+ Records in MySQL Gives General error: 1390 Prepared statement contains too many placeholders(在 MySQL 中导入 50K+ 记录会出现一般错误:1390 Prepared statement contains too many placeholders)
