如何计算每个用户并在Codeigniter中返回数组

Question

我有这样的数据库，想要返回：

id_user : 5c348f8041dc5 have 2  
id_user : 5cfc8a7d33a12 have 1

该怎么做或我应该寻找的教程名称？

谢谢。

Answer 1

您正在寻找struct ContentView : View { var horizontalSpacing: CGFloat = 48 var verticalSpacing: CGFloat = 48 var body: some View { GeometryReader { geometry in Path { path in let numberOfHorizontalGridLines = Int(geometry.size.height / self.verticalSpacing) let numberOfVerticalGridLines = Int(geometry.size.width / self.horizontalSpacing) for index in 0...numberOfVerticalGridLines { let vOffset: CGFloat = CGFloat(index) * self.horizontalSpacing path.move(to: CGPoint(x: vOffset, y: 0)) path.addLine(to: CGPoint(x: vOffset, y: geometry.size.height)) } for index in 0...numberOfHorizontalGridLines { let hOffset: CGFloat = CGFloat(index) * self.verticalSpacing path.move(to: CGPoint(x: 0, y: hOffset)) path.addLine(to: CGPoint(x: geometry.size.width, y: hOffset)) } } .stroke() } } } 和COUNT语句。

https://www.codeigniter.com/user_guide/database/query_builder.html

group_by

结果：