环境准备controller@RestController
@RequestMapping("/api/admin")
public class AdminController {
@GetMapping("/hello")
public String hello(){
return "hello! this is admin page";
}
}
/*
1 查询1.1 随机采样1.1.1 ORDER BY RAND()-- 随机排序后返回10行数据
select * from test.SALES ORDER BY RAND() LIMIT 10 ;1.1.2 SAMPLE子句-- 随机采样10%的记录返回，返回执行结果集不相同
select * from test.SALES SAMPLE(10) ;
-- 随机采样10%的记录返回，返回执行结
