平常我们写sql语句使用in函数基本上都是一个字段in一个字段例如：select * from Student where teacherId in (select id from Teacher)其实也可以in多个字段，但是要一一对应例如：select * from Student where (id,Salary) in (select id,Max(Salary) from Student

例如：row: {...item},这是es6的语法；他的效果是这样的var a = {name: '张三',age: 25}var b = {job: 'web前端',...a}// 相当于var c = {job: 'web前端',name: '张三',age: 25}