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MYSQL

by 이유나1 2022. 9. 15.
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🎈MYSQL

MYSQL은 데이터베이스 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, cafw24, 제로보드, 그누보드)등 일반적으로 웹 개발에 널리 사용되고 있습니다.

MYSQL 설치

MAMP란 웹사이트를 개발할 때 쓰이는 기술 스택인 macOS, Apache, MySQL, PHP 의 약어이자 솔류션 스택이다.

MYSQL 실행

윈도우 : cd C:\MAMP\bin\mysql\bin
로그인 : mysql -uroot -proot
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.

mysql>
맥 : cd Application-mamp/Libary/bin
로그인 : ./mysql -uroot -proot
webstoryboyhwang@Webstoryboyui-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.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

🎈데이터베이스

데이터베이스 만들기

show databases;
mysql> create database sample02;
Query OK, 1 row affected (0.00 sec)

데이터베이스 만들기

create database 데이터베이스 이름;

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sample01           |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

데이터베이스 사용

use 데이터베이스 이름;
mysql> use sample01;
Database changed

데이터베이스 삭제

drop database 데이터베이스 이름;
mysql> drop database sample02;
Query OK, 0 rows affected (0.04 sec)

🎈테이블

테이블 만들기

create table 테이블 이름
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;

테이블 전체보기

show table;

mysql> show tables;
    +--------------------+
    | Tables_in_sample01 |
    +--------------------+
    | member             |
    +--------------------+
    1 row in set (0.00 sec)

테이블 보기

desc 테이블 이름;

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)

테이블 삭제

drop table 테이블 이름;
mysql> drop table member;
Query OK, 0 rows affected (0.01 sec)

테이블 복사

CREATE TABLE 새로운 테이블명 select * from 복사할 테이블 명
 CREATE TABLE member3 SELECT * from member;

🎈테이블 데이터

데이터 입력하기

CINSERT UNTO 테이블이름(필드명) VALUE(데이터)
INSERT INTO member(youEmail,youName,youPass,youBirth,youage, regTime)VALUES('fkdldhs8484@gmail.com','이유나','1234,'19981029','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('webstoryboy@naver.com','황상연','1234','19990303','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('thdtjdgml415@naver.com', '송성희', '1234', '19970415','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('mo0647@naver.com', '김민정', '1234', '19970530', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('tjrwnsrkdtj@naver.com', '김석준', '1234', '19941009', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('jwor124@naver.com', '정은비', '1234', '19990303', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('leesh3432@naver.com','이영환','1234','19970205','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('sshin4882@naver.com','박현신','1234','19990303','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('to_before@naver.com', '김상준', '1234', '19970809', '20','04');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('kkb7528@naver.com','권규비','1234','19990303','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('piowm123@gmail.com', '문병내', '1234', '19990303', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('ghkddbwls96@gmail.com', '황유진', '1234', '19990303', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('eodnjs9605@naver.com','김대원','1234','19960530','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('wjsqhdus971007@gmail.com','전보연','1234','19971007','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('noeyheyh@gmail.com','권혜현','1234','19960331','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('hjkang306@gmail.com','강현지','1234','19990303','20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('sunhey9810@gmail.com', '박선혜', '1234', '19981010', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUE('kde66034@gmail.com', '김동언', '1234', '19700101', '20','1234567');
INSERT INTO member(youEmail, youName, youPass, youBirth, youAge, regTime) VALUES('praise1109@gmail.com', '이하은', '1234', '19990303', '20','1234567');

데이터 불러오기

SELECT 필드명 FROM 테이블명 WHERE 조건

전체 데이터 불러오기

mysql> select * from member;
    +------------+--------------------------+---------+---------+----------+---------+
    | myMemberID | youEmail                 | youName | youPass | youBirth | regTime |
    +------------+--------------------------+---------+---------+----------+---------+
    |          1 | kkk5993@naver.com        | 김성현  | 1234    | 19960617 | 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 | *********@naver.com      | ******  | 1234    | 19970205 | 1234567 |
    |          8 | sshin4882@naver.com      | 박현신  | 1234    | 19990303 | 1234567 |
    |          9 | to_before@naver.com      | 김상준  | 1234    | 19970809 | 1234567 |
    |         10 | kkb7528@naver.com        | 권규비  | 1234    | 19990303 | 1234567 |
    |         11 | ghkddbwls96@gmail.com    | 황유진  | 1234    | 19990303 | 1234567 |
    |         12 | eodnjs9605@naver.com     | 김대원  | 1234    | 19960530 | 1234567 |
    |         13 | wjsqhdus971007@gmail.com | 전보연  | 1234    | 19971007 | 1234567 |
    |         14 | noeyheyh@gmail.com       | 권혜현  | 1234    | 19960331 | 1234567 |
    |         15 | hjkang306@gmail.com      | 강현지  | 1234    | 19990303 | 1234567 |
    |         16 | sunhey9810@gmail.com     | 박선혜  | 1234    | 19981010 | 1234567 |
    |         17 | kde66034@gmail.com       | 김동언  | 1234    | 19700101 | 1234567 |
    |         18 | praise1109@gmail.com     | 이하은  | 1234    | 19990303 | 1234567 |
    |         19 | oranssy@naver.com        | 최진주  | 3950    | 20010415 | 1234567 |
    |         20 | kimlh3743@gmail.com      | 김이형  | 1234    | 20011009 | 1234567 |
    |         21 | happyham52@gmail.com     | 이중호  | 1234    | 19970731 | 1234567 |
    +------------+--------------------------+---------+---------+----------+---------+
    21 rows in set (0.00 sec)

meMemberID가 6번인 경우

mysql> select * from member where myMemberID = 6;
+------------+-------------------+---------+---------+----------+---------+
| myMemberID | youEmail          | youName | youPass | youBirth | regTime |
+------------+-------------------+---------+---------+----------+---------+
|          6 | jwor124@naver.com | 정은비  | 1234    | 19990303 | 1234567 |
+------------+-------------------+---------+---------+----------+---------+
1 row in set (0.00 sec)

meMemberID가 6번이 아닌 경우

select * from member where myMemberID <>6;

meMemberID가 5~10번인 경우

select * from member where myMemberID >=5 AND myMemberID <=10;

meMemberID가 5~10번이 아닌 경우(범위 조건)

select * from member where myMemberID NOT BETWEEN 5 AND 10;

meMemberID (해당 조건 불러오기 - 검색기능)

select * from member where myMemberID IN(1,4,10,14);

email 중에 naver 텍스트를 포함하고 있는 경우

mysql> select * from member where youEmail LIKE "%naver%";
    +------------+------------------------+---------+---------+----------+---------+
    | myMemberID | youEmail               | youName | youPass | youBirth | regTime |
    +------------+------------------------+---------+---------+----------+---------+
    |          1 | kkk5993@naver.com      | 김성현  | 1234    | 19960617 | 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 | *******************    | ******  | 1234    | 19970205 | 1234567 |
    |          8 | sshin4882@naver.com    | 박현신  | 1234    | 19990303 | 1234567 |
    |          9 | to_before@naver.com    | 김상준  | 1234    | 19970809 | 1234567 |
    |         10 | kkb7528@naver.com      | 권규비  | 1234    | 19990303 | 1234567 |
    |         12 | eodnjs9605@naver.com   | 김대원  | 1234    | 19960530 | 1234567 |
    |         19 | oranssy@naver.com      | 최진주  | 3950    | 20010415 | 1234567 |
    +------------+------------------------+---------+---------+----------+---------+
    12 rows in set (0.00 sec)

이름 중에 '김'씨 이거나 '황'씨인 경우 멤버 출력

mysql> select * from member where youName LIKE '김%" OR youName LIKE '황%';

데이터 수정하기

UPDATE 테이블명(필드명) SET 컬럼명 조건

모든 회원 핸드폰 변경

 UPDATE member SET youPhone = "010-0000-0000";
+------------+--------------------------+---------+---------+----------+--------+---------+
| myMemberID | youEmail                 | youName | youPass | youBirth | youage | regTime |
+------------+--------------------------+---------+---------+----------+--------+---------+
|          1 | webstoryboy@naver.com    | 황상연  | 1234    | 19990303 |     20 | 1234567 |
|          2 | thdtjdgml415@naver.com   | 송성희  | 1234    | 19970415 |     20 | 1234567 |
|          3 | mo0647@naver.com         | 김민정  | 1234    | 19970530 |     20 | 1234567 |
|          4 | tjrwnsrkdtj@naver.com    | 김석준  | 1234    | 19941009 |     20 | 1234567 |
|          5 | jwor124@naver.com        | 정은비  | 1234    | 19990303 |     20 | 1234567 |
|          6 | leesh3432@naver.com      | 이영환  | 1234    | 19970205 |     20 | 1234567 |
|          7 | sshin4882@naver.com      | 박현신  | 1234    | 19990303 |     20 | 1234567 |
|          8 | to_before@naver.com      | 김상준  | 1234    | 19970809 |     20 |       4 |
|          9 | kkb7528@naver.com        | 권규비  | 1234    | 19990303 |     20 | 1234567 |
|         10 | piowm123@gmail.com       | 문병내  | 1234    | 19990303 |     20 | 1234567 |
|         11 | ghkddbwls96@gmail.com    | 황유진  | 1234    | 19990303 |     20 | 1234567 |
|         12 | eodnjs9605@naver.com     | 김대원  | 1234    | 19960530 |     20 | 1234567 |
|         13 | wjsqhdus971007@gmail.com | 전보연  | 1234    | 19971007 |     20 | 1234567 |
|         14 | noeyheyh@gmail.com       | 권혜현  | 1234    | 19960331 |     20 | 1234567 |
|         15 | hjkang306@gmail.com      | 강현지  | 1234    | 19990303 |     20 | 1234567 |
|         16 | sunhey9810@gmail.com     | 박선혜  | 1234    | 19981010 |     20 | 1234567 |
|         17 | kde66034@gmail.com       | 김동언  | 1234    | 19700101 |     20 | 1234567 |
|         18 | praise1109@gmail.com     | 이하은  | 1234    | 19990303 |     20 | 1234567 |
+------------+--------------------------+---------+---------+----------+--------+---------+

아이디가 3번인 회원의 비밀번호 "0123456"로 변경

UPDATE member SET youPass = "0123456" WHERE myMemberID = 3;

데이터 삭제하기

DELETE FROM 테이블명 조건

회원 아이디가 5번의 멤버 삭제

DELETE FROM member WHERE myMemberID = 5

회원 비밀번호가 '1234'인 멤버 삭제

DELETE FROM member WHERE youPass = '1234';

🎈테이블 수정

필드 추가하기

ALTER TABLE 테이블명 ADD 추가할 필드명 AFRER 필드 위치

member 테이블 나이 뒤에 핸드폰 번호 필드를 추가

ALTER TABLE member ADD youPhone int(20) NOT NULL AFTER youage;

member 테이블 핸드폰 번호 뒤에 성별 필드를 추가

ALTER TABLE member ADD youGender enum('m','w','x') default 'x' comment "남자 m, 여자 w" AFTER youPhone;

필드 수정하기

ALTER TABLE 테이블명 MODIFY 수정할 필드명
ALTER TABLE member MODIFY youage int(10);

🎈테이블 합치기

테이블 JOIN

SELECT 필드명 FROM
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, PRIMARY ) VALUES('webstoryboy@naver.com','황상연','1234','19990303','20', '01099991111' , '1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youage, youPhone, regTime, PRIMARY ) VALUES('thdtjdgml415@naver.com', '송성희', '1234', '19970415','30', '01099991111' , '1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youage, youPhone, regTime, PRIMARY ) VALUES('mo0647@naver.com', '김민정', '1234', '19970530','22', '01099991111' , '1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youage, youPhone, regTime, PRIMARY ) VALUES('tjrwnsrkdtj@naver.com', '김석준', '1234', '19941009','30', '01099991111' , '1234567');
INSERT INTO myMember(youEmail, youName, youPass, youBirth, youage, youPhone, regTime, PRIMARY ) VALUES('jwor124@naver.com', '정은비', '1234', '19990303','40', '01099991111' , '1234567');

INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("1", "정말 감사합니다. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("3", "이거 별루네요~~ 사지마.", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("2", "안녕하세요. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("3", "가성비 짱. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("4", "비추비추.... 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("5", "올드합니다. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("2", "강추 정말 감사합니다. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("3", "훌륭합니다.... 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("4", "대박대박. 너무 좋네요!!", "1234657");
INSERT INTO myReview(myMEmberID, youText, regTime) VALUES("5", "훌륭합니다... 너무 좋네요!!", "1234657");

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;
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