牛客SQL02查找入职员工时间排名倒数第三的员工所有信息

题目：查找入职员工时间排名倒数第三的员工所有信息

输入：

drop table if exists  "employees" ; 
CREATE TABLE "employees" (
"emp_no" int NOT NULL,
"birth_date" date NOT NULL,
"first_name" varchar(14) NOT NULL,
"last_name" varchar(16) NOT NULL,
"gender" char(1) NOT NULL,
"hire_date" date NOT NULL,
PRIMARY KEY ("emp_no"));
INSERT INTO employees VALUES(10001,'1953-09-02','Georgi','Facello','M','1986-06-26');
INSERT INTO employees VALUES(10002,'1964-06-02','Bezalel','Simmel','F','1985-11-21');
INSERT INTO employees VALUES(10003,'1959-12-03','Parto','Bamford','M','1986-08-28');
INSERT INTO employees VALUES(10004,'1954-05-01','Chirstian','Koblick','M','1986-12-01');
INSERT INTO employees VALUES(10005,'1955-01-21','Kyoichi','Maliniak','M','1989-09-12');
INSERT INTO employees VALUES(10006,'1953-04-20','Anneke','Preusig','F','1989-06-02');
INSERT INTO employees VALUES(10007,'1957-05-23','Tzvetan','Zielinski','F','1989-02-10');
INSERT INTO employees VALUES(10008,'1958-02-19','Saniya','Kalloufi','M','1994-09-15');
INSERT INTO employees VALUES(10009,'1952-04-19','Sumant','Peac','F','1985-02-18');
INSERT INTO employees VALUES(10010,'1963-06-01','Duangkaew','Piveteau','F','1989-08-24');
INSERT INTO employees VALUES(10011,'1953-11-07','Mary','Sluis','F','1990-01-22');

答案一

SELECT *
FROM (
    SELECT *
    FROM employees as e1
    ORDER BY e1.hire_date DESC
    LIMIT 3
    ) as e2
ORDER BY e2.hire_date ASC
LIMIT 1

耗时

答案二

SELECT * 
FROM employees
WHERE hire_date = (
    SELECT DISTINCT hire_date 
    FROM employees
    ORDER BY hire_date DESC       -- 倒序
    LIMIT 1 OFFSET 2              -- 去掉排名倒数第一第二的时间，取倒数第三
);    

耗时

答案三

select * from employees order by hire_date desc  limit 1 offset 2;