这对我很管用。修改数据库、用户名和密码。

mysql -Nse 'show tables' -D DATABASE -uUSER -pPWD | while read table; do echo "SET FOREIGN_KEY_CHECKS = 0;drop table \`$table\`;SET FOREIGN_KEY_CHECKS = 1;"; done | mysql DATABASE -uUSER -pPWD

删除(即删除表格)

mysql -Nse 'show tables' DATABASE_NAME | while read table; do mysql -e "drop table $table" DATABASE_NAME; done

截断(即空表)

mysql -Nse 'show tables' DATABASE_NAME | while read table; do mysql -e "truncate table $table" DATABASE_NAME; done

我们可以编写如下所示的bash脚本

truncate_tables_in_mysql() {
    type mysql >/dev/null 2>&1 && echo "MySQL present." || sudo apt-get install -y mysql-client
    
    tables=$(mysql -h 127.0.0.1 -P $MYSQL_PORT -u $MYSQL_USER  -p$MYSQL_PASSWORD -e "USE $BACKEND_DATABASE;    
SHOW TABLES;")
    tables_list=($tables)
    
    query_string="USE $BACKEND_DATABASE; SET FOREIGN_KEY_CHECKS = 0;"
    for table in "${tables_list[@]:1}"
    do
        query_string="$query_string TRUNCATE TABLE \`$table\`; "
    done
    query_string="$query_string SET FOREIGN_KEY_CHECKS = 1;"
    
    mysql -h 127.0.0.1 -P $MYSQL_PORT -u $MYSQL_USER -p$MYSQL_PASSWORD -e "$query_string"
}

你可以用你的MySQL细节替换env变量。使用一个命令就可以截断一个DB中的所有表。

TB=$( mysql -Bse "show tables from DATABASE" );
for i in ${TB};
    do echo "Truncating table ${i}";
    mysql -e "set foreign_key_checks=0; set unique_checks=0;truncate table DATABASE.${i}; set foreign_key_checks=1; set unique_checks=1";
    sleep 1;
done

--

大卫,

感谢您花时间格式化代码，但这是它应该如何应用。

库尔特

在UNIX或Linux机器上:

确保您处于bash shell中。从命令行运行这些命令，如下所示。

注意:

我将凭据存储在~/.my.cnf文件中，因此不需要在命令行上提供凭据。

注意:

CPM是数据库名称

我只展示了来自每个命令的结果的一小部分示例。

找到你的外键约束:

klarsen@Chaos:~$ mysql -Bse "select concat(table_name, ' depends on ', referenced_table_name)
             from information_schema.referential_constraints
             where constraint_schema = 'cpm'
             order by referenced_table_name"

Approval_external_system依赖于approval_request 地址视客户而定 Customer_identification取决于客户 External_id取决于客户 凭证取决于客户 Email_address取决于客户 Approval_request取决于客户 Customer_status取决于客户 Customer_image取决于客户

列出表和行数:

klarsen@Chaos:~$ mysql -Bse "SELECT table_name, table_rows FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'cpm'" | cat -n

 1  address 297
 2  approval_external_system    0
 3  approval_request    0
 4  country 189
 5  credential  468
 6  customer    6776
 7  customer_identification 5631
 8  customer_image  2
 9  customer_status 13639

截断你的表:

klarsen@Chaos:~$ TB=$( mysql -Bse "show tables from cpm" ); for i in ${TB}; do echo "Truncating table ${i}"; mysql -e "set foreign_key_checks=0; set unique_checks=0;truncate table cpm.${i}; set foreign_key_checks=1; set unique_checks=1"; sleep 1; done

截断表地址 截断表approval_external_system 截断表approval_request 截断表国家 截断表凭据 截断表客户 截断表customer_identification 截断表customer_image 截断表customer_status

验证它是否有效:

klarsen@Chaos:~$ mysql -Bse "SELECT table_name, table_rows FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'cpm'" | cat -n

 1  address 0
 2  approval_external_system    0
 3  approval_request    0
 4  country 0
 5  credential  0
 6  customer    0
 7  customer_identification 0
 8  customer_image  0
 9  customer_status 0
10  email_address   0

在Windows机器上:

注意:

CPM是数据库名称

C:\>for /F "tokens=*" %a IN ('mysql -Bse "show tables" cpm') do mysql -e "set foreign_key_checks=0; set unique_checks=0; truncate table %a; foreign_key_checks=1; set unique_checks=1" cpm

下面的查询将为Mysql模式中的所有数据库表生成一个截断命令列表。(将dbSchemaName1替换为您的Db模式名。)

SELECT CONCAT('TRUNCATE TABLE ',table_schema,'.',TABLE_NAME, ';') 
    FROM INFORMATION_SCHEMA.TABLES WHERE table_schema IN ('dbSchemaName1','dbSchemaName2');

复制查询结果(可能看起来像下面这样)，并将截断命令列表粘贴到MySQL Worbench或您选择的查询命令工具中的SQL查询选项卡中:

TRUNCATE TABLE dbSchemaName1.table1;
TRUNCATE TABLE dbSchemaName1.table2;
TRUNCATE TABLE dbSchemaName1.table3;

注意:您可能会收到以下错误:

ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails

如果存在外键引用您试图删除/截断的表的表，就会发生这种情况。

要解决在运行truncate命令之前关闭外键检查的问题:

SET FOREIGN_KEY_CHECKS=0;  -- turn off foreign key checks
TRUNCATE TABLE dbSchemaName1.table1;  -- truncate tables
TRUNCATE TABLE dbSchemaName1.table2;
TRUNCATE TABLE dbSchemaName1.table3;
SET FOREIGN_KEY_CHECKS=1;  -- turn on foreign key checks

溶液(1)

mysql> select group_concat('truncate',' ',table_name,';') from information_schema.tables where table_schema="db_name" into outfile '/tmp/a.txt';
mysql> /tmp/a.txt;

溶液2)

- Export only structure of a db
- drop the database
- import the .sql of structure 

——编辑----

earlier in solution 1, i had mentioned concat() instead of group_concat() which would have not returned the desired result