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

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

这是我的变体有'一个语句截断'他们所有'。

首先，我为我的辅助存储过程使用了一个名为“util”的单独数据库。我的存储过程截断所有表的代码是:

DROP PROCEDURE IF EXISTS trunctables;
DELIMITER ;;
CREATE  PROCEDURE trunctables(theDb varchar(64))
BEGIN
    declare tname varchar(64);
    declare tcursor CURSOR FOR 
    SELECT table_name FROM information_schema.tables WHERE table_type <> 'VIEW' AND table_schema = theDb;
    SET FOREIGN_KEY_CHECKS = 0; 
    OPEN tcursor;
    l1: LOOP
        FETCH tcursor INTO tname;
        if tname = NULL then leave l1; end if;
        set @sql = CONCAT('truncate `', theDB, '`.`', tname, '`');
        PREPARE stmt from @sql;
        EXECUTE stmt;
        DEALLOCATE PREPARE stmt;
    END LOOP l1;
    CLOSE tcursor;
    SET FOREIGN_KEY_CHECKS = 1; 
END ;;
DELIMITER ;

在util数据库中有了这个存储过程后，可以像这样调用它

call util.trunctables('nameofdatabase');

现在正好是一个声明:-)

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

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

我发现这可以删除数据库中的所有表:

mysqldump -uUSERNAME -pPASSWORD --add-drop-table --no-data DATABASENAME | grep ^DROP | mysql -uUSERNAME -pPASSWORD DATABASENAME

如果您受到托管解决方案的限制(不能删除整个数据库)，则非常有用。

我修改了它来截断表格。mysqldump没有“——add- trunct -table”，所以我做了:

mysqldump -uUSERNAME -pPASSWORD --add-drop-table --no-data DATABASENAME | grep ^DROP | sed -e 's/DROP TABLE IF EXISTS/TRUNCATE TABLE/g' | mysql -uUSERNAME -pPASSWORD DATABASENAME

对我有用 ——edit，修复最后一个命令的错别字