Difference between revisions of "MySQL"

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Line 60: Line 60:
 
====Update data====
 
====Update data====
  
   UPDATE <table_name> SET <column>='' WHERE <column>='';
+
   UPDATE <table_name> SET <column>="<value>" WHERE <column>="<value>";
 
   UPDATE mahasiswa SET nilai='90' WHERE npm='123';
 
   UPDATE mahasiswa SET nilai='90' WHERE npm='123';
  

Revision as of 14:53, 7 December 2022

Perintah

Login

  mysql -u <username> -p

Kemudian isikan passwordnya


Melihat database yang ada

  show databases;


Membuat database

  CREATE DATABASE <nama_database>;


Drop database

  DROP DATABASE <nama_database>;


Melihat tabel yang ada

  show tables;


Membuat tabel

  CREATE TABLE Mahasiswa (
    NPM int(11) PRIMARY KEY,
    Nama varchar(255) NOT NULL
  );


Jika ID autoincrement

  CREATE TABLE Barang (
    Barangid int NOT NULL AUTO_INCREMENT,
    NamaBarang varchar(255) NOT NULL,
    PRIMARY KEY (Barangid)
  );


Modifikasi tabel

  ALTER TABLE Mahasiswa ADD Email varchar(255);
  ALTER TABLE Mahasiswa DROP COLUMN Email;
  ALTER TABLE <table_name> MODIFY COLUMN <column_name> <datatype>;
  ALTER TABLE <table_name> RENAME COLUMN <old_column_name> TO <new_column_name>;

Insert data

  INSERT INTO Mahasiswa (NPM, Nama) VALUES 
  ('001', 'Mahasiswa 1'),
  ('002', 'Mahasiswa 2');

Update data

  UPDATE <table_name> SET <column>="<value>" WHERE <column>="<value>";
  UPDATE mahasiswa SET nilai='90' WHERE npm='123';

Export sql

  mysqldump -u <username> -p <nama-database> > db.sql


Import sql

  mysql -u <username> -p <nama-database> < db.sql


GRANT ALL

create user 'user' identified by 'password';
grant all privileges on database-name.* to 'user';