[MySQL光速入門]022 插入數據的兩種方式(番外)

第一種方式 insert into

第一種方式比較簡單, 前面已經介紹過, 直接上代碼

CREATE TABLE test (
	id INT auto_increment PRIMARY KEY,
	NAME VARCHAR ( 20 ) NOT NULL,
	account INT NOT NULL,
	age INT NOT NULL,
	sex CHAR ( 1 ) NOT NULL 
);
複製代碼

INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 1, '張三', 3000, 18, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 2, '李四', 4000, 28, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 3, '王五', 5000, 38, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 4, '趙六', 6000, 48, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 5, '孫七', 2000, 19, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 6, '周八', 1000, 29, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 7, '吳老九', 9000, 39, '男' );
INSERT INTO `test` ( `id`, `name`, `account`, `age`, `sex` )
VALUES
	( 8, '馮老十', 8000, 49, '男' );
複製代碼

第二種方式 相似於update

若是更新數據須要update 代碼以下:

UPDATE `test` 
SET 
`name` = '張三',
`account` = 3000,
`age` = 18,
`sex` = '男' 
WHERE
	`id` = 1;
複製代碼

咱們的第二種插入數據的方式和update很像

INSERT INTO `test` 
SET 
    `id` = 11,
    `name` = '張三',
    `account` = 3000,
    `age` = 18,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 12,
    `name` = '李四',
    `account` = 4000,
    `age` = 28,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 13,
    `name` = '王五',
    `account` = 5000,
    `age` = 38,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 14,
    `name` = '趙六',
    `account` = 6000,
    `age` = 48,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 15,
    `name` = '孫七',
    `account` = 2000,
    `age` = 19,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 16,
    `name` = '周八',
    `account` = 1000,
    `age` = 29,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 17,
    `name` = '吳老九',
    `account` = 9000,
    `age` = 39,
    `sex` = '男';
    
INSERT INTO `test` 
SET 
    `id` = 18,
    `name` = '馮老十',
    `account` = 8000,
    `age` = 49,
    `sex` = '男';
複製代碼

二者之間的區別

1. 第一種方式支持一次插入多條

INSERT INTO `test`(`id`, `name`, `account`, `age`, `sex`) 
VALUES 
(1, '張三', 3000, 18, '男'),
(2, '李四', 4000, 28, '男'),
(3, '王五', 5000, 38, '男'),
(4, '趙六', 6000, 48, '男'),
(5, '孫七', 2000, 19, '男'),
(6, '周八', 1000, 29, '男'),
(7, '吳老九', 9000, 39, '男'),
(8, '馮老十', 8000, 49, '男');
複製代碼

2. 更加逆天的是, 還支持子查詢....

insert into test (`name`,`account`,`sex`,`age`)
select `name`,`account`,`sex`,`age` from test;
複製代碼

把test表中的name,account,sex,age字段的值複製, 而後從新寫入test表中, 由於id是自動遞增的, 因此可以寫入成功

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