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mysql數(shù)據(jù)庫制作

錢多多2年前11瀏覽0評論

MySQL是一款開源的關(guān)系型數(shù)據(jù)庫管理系統(tǒng),它被廣泛應(yīng)用于網(wǎng)站和企業(yè)中。以下是制作MySQL數(shù)據(jù)庫的步驟和示例代碼。

1. 創(chuàng)建數(shù)據(jù)庫:

CREATE DATABASE mydatabase;

2. 連接到數(shù)據(jù)庫:

USE mydatabase;

3. 創(chuàng)建表格:

CREATE TABLE customers (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50),
reg_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

4. 插入數(shù)據(jù):

INSERT INTO customers (firstname, lastname, email)
VALUES ('John', 'Doe', 'john@example.com');

5. 查詢數(shù)據(jù):

SELECT * FROM customers;

6. 更新數(shù)據(jù):

UPDATE customers SET lastname='Smith' WHERE id=1;

7. 刪除數(shù)據(jù):

DELETE FROM customers WHERE id=1;

通過以上步驟,您可以成功創(chuàng)建、連接、操作MySQL數(shù)據(jù)庫。