我觉得最上面的答案太棒了。但是，当你有一个经过身份验证的MySQL数据库用户时，它就失败了。

这是建立在我链接的顶部答案之上的解决方案。此解决方案安全地处理身份验证，而无需:

为每个表输入密码 担心你的密码泄露到某个地方 对其他MySQL cnf文件(~/.my.cnf)的副作用要了解更多关于这些文件的详细信息，请查看答案底部的参考资料部分。

1. 创建本地。my.cnf文件

vi .temp.my.cnf

[client]
user=<admin_user_goes_here>
password=<admin_password_goes_here>

2. 截断或删除所有表

2.截断所有表(仅为空)

mysql --defaults-extra-file=.temp.my.cnf -Nse 'show tables' <db_name_goes_here> | while read table; do mysql --defaults-extra-file=.temp.my.cnf -e "truncate table $table" <db_name_goes_here>; done

2.B删除所有表(完全删除)

mysql --defaults-extra-file=.temp.my.cnf -Nse 'show tables' <db_name_goes_here> | while read table; do mysql --defaults-extra-file=.temp.my.cnf -e "drop table $table" <db_name_goes_here>; done

3.清理

删除用户密码文件

rm -rf .temp.my.cnf

资源:

https://rtcamp.com/tutorials/mysql/mycnf-preference/ https://dev.mysql.com/doc/refman/8.0/en/option-files.html https://dev.mysql.com/doc/refman/8.0/en/option-file-options.html#option_general_defaults-extra-file

我发现最简单的方法是像下面这样做，只需用自己的表名替换表名。重要的是确保最后一行永远是 设置FOREIGN_KEY_CHECKS = 1;

SET FOREIGN_KEY_CHECKS=0;
TRUNCATE `table1`;
TRUNCATE `table2`;
TRUNCATE `table3`;
TRUNCATE `table4`;
TRUNCATE `table5`;
TRUNCATE `table6`;
TRUNCATE `table7`;
SET FOREIGN_KEY_CHECKS=1;

一个想法可能只是删除并重新创建表?

编辑:

@Jonathan Leffler:没错

其他建议(或者你不需要截断所有表):

为什么不创建一个基本的存储过程来截断特定的表呢

CREATE PROCEDURE [dbo].[proc_TruncateTables]
AS
TRUNCATE TABLE Table1
TRUNCATE TABLE Table2
TRUNCATE TABLE Table3
GO

PHP单命令:

php -r '$d="PUT_YOUR_DB_NAME_HERE"; $q="show tables"; $dt="drop table"; exec("mysql -Nse \"$q\" $d", $o); foreach($o as $e) `mysql -e "$dt $e" $d`;'

执行的PHP脚本:

$d="PUT_YOUR_DB_NAME_HERE"; 
$q="show tables"; 
$dt="drop table"; 

exec("mysql -Nse \"$q\" $d", $o); 

foreach($o as $e)
  `mysql -e "$dt $e" $d`;

以这种方式使用phpMyAdmin:

Database View => Check All (tables) =>空

如果你想忽略外键检查，你可以取消选中下面的复选框:

[]启用外键检查

您至少需要运行4.5.0或更高版本才能获得此复选框。

它不是MySQL CLI-fu，但是，嘿，它工作!

To truncate a table, one must drop the foreign key constraints mapped to the columns in this table from other tables (in fact on all tables in the specific DB/Schema). So, all foreign key constraints must be dropped initially followed by table truncation. Optionally, use the optimize table (in mysql, innodb engine esp) to reclaim the used data space/size to OS after data truncation. Once data truncation is carried out, create the same foreign key constraints again on the same table. See below a script that would generate the script to carry out the above operations. SELECT CONCAT('ALTER TABLE ',TABLE_SCHEMA,'.',TABLE_NAME,' DROP FOREIGN KEY ',CONSTRAINT_NAME,';') FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE CONSTRAINT_TYPE='FOREIGN KEY' AND TABLE_SCHEMA='<TABLE SCHEMA>' UNION SELECT CONCAT('TRUNCATE TABLE ',TABLE_SCHEMA,'.',TABLE_NAME,';') FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='<TABLE SCHEMA>' AND TABLE_TYPE='BASE TABLE' UNION SELECT CONCAT('OPTIMIZE TABLE ',TABLE_SCHEMA,'.',TABLE_NAME,';') FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='<TABLE SCHEMA>' AND TABLE_TYPE='BASE TABLE' UNION SELECT CONCAT('ALTER TABLE ',TABLE_SCHEMA,'.',TABLE_NAME,' ADD CONSTRAINT ',CONSTRAINT_NAME,' FOREIGN KEY(',COLUMN_NAME,')',' REFERENCES ',REFERENCED_TABLE_NAME,'(',REFERENCED_COLUMN_NAME,');') FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE CONSTRAINT_NAME LIKE 'FK%' AND TABLE_SCHEMA='<TABLE SCHEMA>' INTO OUTFILE "C:/DB Truncate.sql" LINES TERMINATED BY '\n';

现在，运行Db Truncate。生成SQL脚本

的好处。 1)回收磁盘空间 2)不需要删除并重新创建具有相同结构的DB/Schema

缺点。 1) FK约束应该是表中的名称，约束名称中包含“FK”。