一、MySQL清空表数据三种方法 1.1 清空表数据:truncate sql命令 代码语言:sql 复制 #清空多张表、库中所有表的数据truncatetabletable_name1,table_name2,...;#清空单张表的数据truncatetabletable_name; 注意: truncate会删除表中的所有数据、释放空间,但是保留表结构 只能操作表,不能与where一起使用 truncate删除...
Query OK,0rows affected (0.16sec) mysql>select*fromstudents_bak; Emptyset(0.00sec) mysql>setautocommit=off; Query OK,0rows affected (0.01sec) mysql>select*fromstudents3;+---+---+---+---+---+ | sid | sname | gender | dept_id | sname2 | +---+---+---+---+---+ |100|...
3. 复制truncate语句到mysql命令行执行 复制truncate语句到mysql命令行执行,可以一次复制多条执行。 mysql> truncate TABLE dbname.ZONESERVICE; Query OK, 0 rows affected mysql> 这样就清空数据库中所有表啦,简单吧~ ——— 版权声明:本文为CSDN博主「iw1210」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附...
The problem appears when I truncate/empty table.Suppose that before truncating the table there where 10 entries in it,from 1 to 10. After truncation takes place the new entry has an ID of 11. After truncation I would expect that the ID would be 1.Why that happens ...
在使用Navicat 操作清空MySQL数据库时,发现有清空表和截断表两个选项。这两个选项都能实现清空MySQL数据库操作,那么 清空表和截断表 有什么区别呢? 01.SQL语句不同: 清空表执行的操作如这个语句: DELETE FROM 表名 ; 截断表: TRUNCATE table表名 ;
Truncate operations drop and re-create the table, which is much faster than deleting rows one by one, particularly for large tables. Truncate operations cause an implicit commit, and so cannot be rolled back. SeeSection 15.3.3, “Statements That Cause an Implicit Commit”. ...
本文记录一下这2种操作模式的区别,目标对象是表wp_comments,里面的所有留言均是垃圾留言,均可删除。然后便有了以下2种方式(进入mysql操作界面后): truncate table comments; delete* from comments; 其中truncate操作中的table可以省略,delete操作中的*可以省略。这两者都是将comments表中数据清空,不过也是有区别的,如...
Replication of the mysql System Schema Replication and the Query Optimizer Replication and Partitioning Replication and REPAIR TABLE Replication and Reserved Words Replication and Row Searches Replication and Source or Replica Shutdowns Replica Errors During Replication Replication and Server SQL...
Summary: in this tutorial, you will learn how to use the MySQL TRUNCATE TABLE statement to delete all data in a table. Introduction to MySQL TRUNCATE TABLE statement The MySQL TRUNCATE TABLE statement allows you to delete all data in a table. Therefore it is like a DELETE statement without ...
mysql> CREATE TABLE `tb_student_course` ( -> `id` int(4) NOT NULL AUTO_INCREMENT, -> `name` varchar(25) NOT NULL, -> PRIMARY KEY (`id`) -> ); Query OK, 0 rows affected (0.04 sec) mysql> INSERT INTO tb_student_course(name) VALUES ('Java'),('MySQL'),('Python'); ...