在mysql表中添加数据命令行

INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);

INSERT INTO users (username, email, age)
VALUES ('john_doe', 'john@example.com', 30);

INSERT INTO users (username, email, age)
VALUES ('jane_doe', 'jane@example.com', 25),
       ('alex_smith', 'alex@example.com', 40);

-- 错误示例
INSERT INTO users (username, email, age)
VALUES ('john_doe', 'john@example.com'); -- 缺少age值

-- 正确示例
INSERT INTO users (username, email, age)
VALUES ('john_doe', 'john@example.com', 30);

-- 错误示例
INSERT INTO users (id, username, email)
VALUES (1, 'john_doe', 'john@example.com'); -- id为1的记录已存在

-- 正确示例
INSERT INTO users (id, username, email)
VALUES (1, 'john_doe', 'john@example.com')
ON DUPLICATE KEY UPDATE username='john_doe', email='john@example.com';