MySQL은 데이터 소프트웨어입니다. 일반적으로 데이터를 추가하거나 검색, 추출하는 기능을 모두 포함해서 데이터베이스라고 부릅니다.
MySQL은 세계에서 가장 많이 쓰이는 오픈 소스의 관계형 데이터베이스 관리시스템(RDBMS)입니다. MySQL은 PHP 스크립트 언어와 상호 연동이 잘 되면서 오픈소스를 개발된 무료 프로그램입니다. 그래서 홈페이지나 쇼핑몰(워드프레스, cafe24, 제로보드, 그누보드)등 일반적으로 웹 개발에 널리 사용하고 있습니다.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.24 MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
...@...-MacBookPro bin % ./mysql -uroot -proot
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 188
Server version: 5.7.34 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
mysql> create database sample01;
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.02 sec)
mysql> use sample01;
Database changed
mysql> drop database sample02;
Query OK, 0 rows affected (0.03 sec)
create table member (
myMemberID int(10) unsigned auto_increment,
youEmail varchar(40) NOT NULL,
youName varchar(20) NOT NULL,
youPass varchar(20) NOT NULL,
youBirth int(20) NOT NULL,
youAge int(5) NOT NULL,
regTime int(20) NOT NULL,
PRIMARY KEY (myMemberID)
) charset=utf8;
mysql> show tables;
+--------------------+
| Tables_in_sample01 |
+--------------------+
| member |
+--------------------+
1 row in set (0.00 sec)
mysql> desc member;
+------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+------------------+------+-----+---------+----------------+
| myMemberID | int(10) unsigned | NO | PRI | NULL | auto_increment |
| youEmail | varchar(40) | NO | | NULL | |
| youName | varchar(20) | NO | | NULL | |
| youPass | varchar(20) | NO | | NULL | |
| youBirth | int(20) | NO | | NULL | |
| regTime | int(20) | NO | | NULL | |
+------------+------------------+------+-----+---------+----------------+
6 rows in set (0.01 sec)
mysql> drop table member;
Query OK, 0 rows affected (0.01 sec)
CREATE TABLE member3 SELECT * FROM member;
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('webstoryboy@naver.com','황상연','1234','19990303','40', '안녕하세요 황상연입니다.', '1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('thdtjdgml415@naver.com', '송성희', '1234', '19970415', '26', '안녕하세요 송성희입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('mo0647@naver.com', '김민정', '1234', '19970530', '26', '안녕하세요 김민정입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('tjrwnsrkdtj@naver.com', '김석준', '1234', '19941009', '26', '안녕하세요 김석준입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('jwor124@naver.com', '정은비', '1234', '19990303', '27', '안녕하세요 정은비입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('leesh3432@naver.com','이영환','1234','19970205', '27', '안녕하세요 이영환입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('sshin4882@naver.com','박현신','1234','19990303','27', '안녕하세요 박혁신입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('to_before@naver.com', '김상준', '1234', '19970809', '26', '안녕하세요 김상준입니다.','04');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('kkb7528@naver.com','권규비','1234','19990303','25', '안녕하세요 권규비입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('piowm123@gmail.com', '문병내', '1234', '19990303', '27', '안녕하세요 문병내입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('ghkddbwls96@gmail.com', '황유진', '1234', '19990303', '27', '안녕하세요 황유진입니다.','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('eodnjs9605@naver.com','김대원','1234','19960530', '27','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('wjsqhdus971007@gmail.com','전보연','1234','19971007','26','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('noeyheyh@gmail.com','권혜현','1234','19960331','27','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('hjkang306@gmail.com','강현지','1234','19990303','25','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('sunhey9810@gmail.com', '박선혜', '1234', '19981010', '25','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUE('kde66034@gmail.com', '김동언', '1234', '19700101', '26','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, newintro, regTime) VALUES('praise1109@gmail.com', '이하은', '1234', '19990303', '25','1234567');
mysql> SELECT * FROM member;
+------------+--------------------------+---------+---------+----------+----------+
| myMemberID | youEmail | youName | youPass | youBirth | regTime |
+------------+--------------------------+---------+---------+----------+----------+
| 1 | sunhey9810@gmail.com | 박선혜 | 1234 | 19981010 | 1234567 |
| 2 | webstoryboy@naver.com | 황상연 | 1234 | 19990303 | 1234567 |
| 3 | thdtjdgml415@naver.com | 송성희 | 1234 | 19970415 | 1234567 |
| 4 | mo0647@naver.com | 김민정 | 1234 | 19970530 | 1234567 |
| 5 | tjrwnsrkdtj@naver.com | 김석준 | 1234 | 19941009 | 1234567 |
| 6 | jwor124@naver.com | 정은비 | 1234 | 19990303 | 1234567 |
| 7 | leesh3432@naver.com | 이영환 | 1234 | 19970205 | 1234567 |
| 8 | kkk5993@naver.com | 김성현 | 1234 | 19960617 | 1234567 |
| 9 | sshin4882@naver.com | 박현신 | 1234 | 19990303 | 1234567 |
| 10 | to_before@naver.com | 김상준 | 1234 | 19970809 | 4 |
| 11 | kkb7528@naver.com | 권규비 | 1234 | 19990303 | 1234567 |
| 12 | piowm123@gmail.com | 문병내 | 1234 | 19990303 | 1234567 |
| 13 | ghkddbwls96@gmail.com | 황유진 | 1234 | 19990303 | 1234567 |
| 14 | eodnjs9605@naver.com | 김대원 | 1234 | 19960530 | 1234567 |
| 15 | wjsqhdus971007@gmail.com | 전보연 | 1234 | 19971007 | 1234567 |
| 16 | noeyheyh@gmail.com | 권혜현 | 1234 | 19960331 | 1234567 |
| 17 | hjkang306@gmail.com | 강현지 | 1234 | 19990303 | 1234567 |
| 18 | kde66034@gmail.com | 김동언 | 1234 | 19700101 | 1234567 |
| 19 | praise1109@gmail.com | 이하은 | 1234 | 19990303 | 1234567 |
| 20 | oranssy@naver.com | 최진주 | 3950 | 20010415 | 1234567 |
| 21 | sdskadd4882@naver.com | 여기요 | 1234 | 22990303 | 12324567 |
| 22 | kimlh3743@gmail.com | 김이형 | 1234 | 20011009 | 1234567 |
+------------+--------------------------+---------+---------+----------+----------+
22 rows in set (0.00 sec)
mysql> SELECT * FROM member WHERE myMemberID = 6;
SELECT * FROM member WHERE myMemberID <> 6;
SELECT * FROM member WHERE myMemberID >= 5 AND myMemberID <= 10;
SELECT * FROM member WHERE myMemberID BETWEEN 5 AND 10;
SELECT * FROM member WHERE myMemberID NOT BETWEEN 5 AND 10;
SELECT * FROM member WHERE myMemberID IN(2,8,9,16);
mysql> SELECT * FROM member WHERE youEmail LIKE '%naver%';
SELECT * FROM member WHERE youEmail LIKE 'web%';
SELECT * FROM member WHERE youEmail LIKE '%com';
SELECT * FROM member WHERE youName LIKE '김%';
SELECT * FROM member WHERE youName LIKE '김%' OR youName LIKE '황%';
SELECT * FROM member WHERE youName LIKE '_상_';
SELECT * FROM member WHERE youName LIKE '__연';
SELECT * FROM member WHERE youName LIKE IS NULL;
SELECT * FROM member WHERE youName IS NOT NULL;
SELECT * FROM member WHERE youName LIKE '김%' AND youAge >= '18';
SELECT * FROM member WHERE youName LIKE '김%' OR youAge >= '18';
SELECT * FROM member WHERE (myMemberID = 2 OR myMemberID = 10) AND youAge >= 20;
SELECT * FROM member LIMIT 5;
SELECT * FROM member LIMIT 5, 5;
SELECT youEmail FROM member LIMIT 5;
UPDATE member SET youPhone = "010-0000-0000";
update member set regTime = 1234567 where youName = "김상준";
update member set youAge = 40 where myMemberID IN(7,8,9);
update member set youPass = '0123' WHERE myMemberID = 3;
update member set youPass = '1234567' WHERE myMemberID BETWEEN 5 AND 10;
update member SET youPass = '1234567' ORDER BY youPass DESC LIMTI 10;
DELETE FROM member WHERE myMemberID = 5;
DELETE FROM member WHERE youPass = '1234';
DELETE FROM member ORDER BY youName LIMIT 5;
DELETE FROM member WHERE myMemberID IN(7,9,10)
ALTER TABLE member ADD youPhone int(20) NOT NULL AFTER youAge;
ALTER TABLE member ADD youGender enum('m','w','x') default 'x' comment "남자 m, 여자 w" AFTER youPhone;
ALTER TABLE member MODIFY youAge int(10);
ALTER TABLE member DROP youGender;
create table myMember (
myMemberID int(10) unsigned auto_increment,
youEmail varchar(40) NOT NULL,
youName varchar(20) NOT NULL,
youPass varchar(20) NOT NULL,
youBirth int(20) NOT NULL,
youAge int(5) NOT NULL,
youPhone varchar(20) NOT NULL,
regTime int(20) NOT NULL,
PRIMARY KEY (myMemberID)
) charset=utf8;
create table myReview (
myReviewID int(10) unsigned auto_increment,
myMemberID int(10) unsigned,
youText tinytext NOT NULL,
regTime int(20) NOT NULL,
PRIMARY KEY (myReviewID)
) charset=utf8;
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youAge, youPhone, regTime) VALUES('webstoryboy@naver.com','황상연','1234','19990303','40', '01099991111', '1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youAge, youPhone, regTime) VALUES('thdtjdgml415@naver.com', '송성희', '1234', '19970415', '26', '01099991111','1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youAge, youPhone, regTime) VALUES('mo0647@naver.com', '김민정', '1234', '19970530', '26', '01099991111','1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youAge, youPhone, regTime) VALUES('tjrwnsrkdtj@naver.com', '김석준', '1234', '19941009', '26', '01099991111','1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youAge, youPhone, regTime) VALUES('jwor124@naver.com', '정은비', '1234', '19990303', '27', '01099991111','1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("1" , "정말 졸려요! 자고싶네요!!", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("2" , "하암, 하품이 나와요!", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("3" , "사실 화장실도 가고 싶어요", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("4" , "하놔 목도 아프네요?", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("5" , "다들 거북목 조심하세요", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("6" , "두통도 생기고!!!", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("7" , "속도 울렁거립니다.. ;3", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("8" , "어제 알바끝나고 아주 죽을꺼 같았는데", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("9" , "안죽었네요 - !!!!!! ", '1234567');
INSERT INTO myReview( myMemberID, youText, regTime) VALUES("10" , "집가서 애기랑 낮잠자고 싶다!!", '1234567');
SELECT m.youName, m.youEmail, r.youText, r.regTime FROM myMember m JOIN myReview r ON (m.myMemberID = r.myMemberID) ORDER BY myReviewID DESC LIMIT 5;
+---------+------------------------+---------------------------+---------+
| youName | youEmail | youText | regTime |
+---------+------------------------+---------------------------+---------+
| 정은비 | jwor124@naver.com | 다들 거북목 조심하세요 | 1234567 |
| 김석준 | tjrwnsrkdtj@naver.com | 하놔 목도 아프네요? | 1234567 |
| 김민정 | mo0647@naver.com | 사실 화장실도 가고 싶어요 | 1234567 |
| 송성희 | thdtjdgml415@naver.com | 하암, 하품이 나와요! | 1234567 |
| 황상연 | webstoryboy@naver.com | 정말 졸려요! 자고싶네요!! | 1234567 |
+---------+------------------------+---------------------------+---------+