thinkphp5 数据库聚合操作

Article 是模型的名

1、统计数据条数： Article::where("id",">",5) -> count();

2、获取最大值： Article::where("id",">",5) -> max('num');

3、获取最小值： Article::where("id",">",5) -> min('num');

4、求和： Article::where("id",">",5) -> sum('num');

5、求平均值： Article::where("id",">",5) -> avg('num');