To empty a MySQL table using this method, your user account will need to have the DROP privilege. You cannot roll back a TRUNCATE TABLE statement. MySQL will reset the AUTO_INCREMENT value of the table. This means that the autoindex value of the next primary key will be 1. This is not...
If this is a problem, you can reset theAUTO_INCREMENTvalue using theALTER TABLEcommand. TRUNCATE TABLE t1; ALTER TABLE t1 AUTO_INCREMENT = 4; INSERT INTO t1 (description) VALUES ('FOUR'); SELECT * FROM t1; mysql> SELECT * FROM t1; +---+---+ | id | description | +---+---+...
If you are going to repair a table from the command line, you must first stop the mysqld server. Note that when you do mysqladmin shutdown on a remote server, the mysqld server is still available for a while after mysqladmin returns, until all statement-processing has stopped and all i...
How to Create a Table in SQL An Overview of PostgreSQL Data Types Understanding Numerical Data Types in SQL Comparing TRUNCATE TABLE, DELETE, and DROP TABLE in SQL What Is the DELETE Statement in SQL? See also: How to Remove a Primary Key in SQL How to remove a unique constraint in SQL...
I'm using MySql 5.5 on Mac 10.7.5. From the shell (I'm using bash), I'd like to be able to run a command o truncate data in all tables. Also, I'd like to enter a single command that won't prompt me for a password. I've tried this, but its evidently not the right comman...
INSERTINTOtable_name_1(auto_increment_key,data)VALUES(NULL,"row 1");INSERTINTOtable_name_2(auto_increment,reference,data)values(NULL,LAST_INSERT_ID(),"row 2"); LAST_INSERT_ID()函数回返回auto_increment的最后一个值。 默认情况下,客户端mysql命令会将上面的语句按一个整体发送给服务端。
How to truncate extra decimal places? How to update a query when subquery returned more than 1 value how to update decimal values in sql server? How to update foreign key... how to update multiple columns of a record using subquery ? plz guide How to update only month part of a datetim...
We can also truncate the data usingSET ANSI_WARNINGS OFFand insert the records again, considering the maximum length of the column’s data type. Invalid Data Is Passed TheError Code: 1265. Data truncated for column 'a' at row 1also occurs in MySQL if we try to insert invalid data. ...
建议使用本地文件形式的 H2 数据库,可不依赖外部的其他数据库,使用更简单;且经过简单测试,H2 比 MySQL 数据库的读写速度更快 所使用的数据库用户需要有 DML 读写权限,及 DDL 权限(需要执行 CREATE TABLE、TRUNCATE TABLE 操作)。 需要使用 JDK8 及以上版本 若需要通过源码启动,需要安装 Gradle 2. 通过源码执...
From the shell (I'm using bash), I'd like to be able to run a command to truncate data in all tables. Also, I'd like to enter a single command that won't prompt me for a password. Youdorealise what a horribly,horriblydangerous thing that would be, don't you?