먼저 테이블을 생성해 보겠습니다. 테이블 생성 쿼리는 다음과 같습니다.
mysql> create table FirstAndLastDataDemo -> ( -> EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> EmployeeName varchar(20), -> EmployeeAge int -> ); Query OK, 0 rows affected (0.59 sec)
삽입 명령을 사용하여 테이블에 일부 레코드를 삽입하십시오. 쿼리는 다음과 같습니다.
mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('John',23); Query OK, 1 row affected (0.15 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Bob',13); Query OK, 1 row affected (0.11 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Larry',24); Query OK, 1 row affected (0.14 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Sam',14); Query OK, 1 row affected (0.18 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Mike',31); Query OK, 1 row affected (0.10 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('James',18); Query OK, 1 row affected (0.16 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Maxwell',28); Query OK, 1 row affected (0.17 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('David',27); Query OK, 1 row affected (0.12 sec) mysql> insert into FirstAndLastDataDemo(EmployeeName,EmployeeAge) values('Chris',22); Query OK, 1 row affected (0.19 sec)
select 문을 사용하여 테이블의 모든 레코드를 표시합니다.
mysql> select *from FirstAndLastDataDemo;
다음은 출력입니다.
+------------+--------------+-------------+ | EmployeeId | EmployeeName | EmployeeAge | +------------+--------------+-------------+ | 1 | John | 23 | | 2 | Bob | 13 | | 3 | Larry | 24 | | 4 | Sam | 14 | | 5 | Mike | 31 | | 6 | James | 18 | | 7 | Maxwell | 28 | | 8 | David | 27 | | 9 | Chris | 22 | +------------+--------------+-------------+ 9 rows in set (0.00 sec)
LIMIT를 사용하여 첫 번째 행과 마지막 행 레코드를 얻으려면 다음과 같이 쿼리합니다.
mysql> (SELECT *from FirstAndLastDataDemo LIMIT 1) -> UNION -> (SELECT *from FirstAndLastDataDemo LIMIT 8,1);
다음은 첫 번째 및 마지막 행 레코드를 표시하는 출력입니다.
+------------+--------------+-------------+ | EmployeeId | EmployeeName | EmployeeAge | +------------+--------------+-------------+ | 1 | John | 23 | | 9 | Chris | 22 | +------------+--------------+-------------+ 2 rows in set (0.00 sec)