mysql如何保存为sql文件

在MySQL中，可以使用mysqldump命令将数据库保存为SQL文件。具体操作如下：，，1. 打开命令行窗口；，2. 输入mysqldump -u 用户名 -p 数据库名 > 文件名.sql；，3. 按回车键执行，输入密码。

要将MySQL数据库保存为SQL文件，可以按照以下步骤操作：

1、打开命令行工具（Windows系统下为cmd，Linux系统下为终端）。

2、连接到MySQL数据库，在命令行中输入以下命令，将username替换为你的MySQL用户名，password替换为你的MySQL密码，database_name替换为你要保存的数据库名称：

“`

mysql u username p password database_name

“`

3、选择要导出的数据库，在MySQL命令行中输入以下命令，将database_name替换为你刚刚连接的数据库名称：

“`

USE database_name;

“`

4、导出数据库为SQL文件，在MySQL命令行中输入以下命令，将output_file.sql替换为你想要保存的SQL文件名：

“`

SELECT CONCAT(‘SHOW TABLES;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SHOW VARIABLES LIKE ‘character_set%’;

SELECT CONCAT(‘SET character_set = ‘, @@character_set_connection, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET collation_connection = ‘, @@collation_connection, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET character_set_client = ‘, @@character_set_client, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET character_set_results = ‘, @@character_set_results, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET collation_server = ‘, @@collation_server, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET collation_server = ‘, @@collation_server, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET character_set_results = ‘, @@character_set_results, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET character_set_client = ‘, @@character_set_client, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET character_set = ‘, @@character_set_connection, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT CONCAT(‘SET collation_connection = ‘, @@collation_connection, ‘;’) AS ”, * FROM information_schema.tables WHERE table_schema = ‘database_name’;

SELECT * FROM table1;

SELECT * FROM table2;

…

SELECT * FROM tableN;

“`

5、退出MySQL命令行，在MySQL命令行中输入以下命令：

“`

exit;

“`

6、将生成的SQL文件保存到本地，在命令行中输入以下命令，将output_file.sql替换为你之前设置的SQL文件名：

“`

TYPE output.sql > output.sql

“`

现在你已经成功将MySQL数据库保存为SQL文件了。