mysql create table example auto increment

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Mysql auto-increment field rearrangement after mysql deletes the table, the auto-increment field starts from 1.

MyISAM data table After a record with the maximum number is deleted, the number cannot be reused. You can use the "auto_increment = N" option to specify an auto-increment initial value when creating a table. You can use the alter table table_name

[Growth] creating MySQL auto-increment Fields

From: http://blog.chinaunix.net/space.php? Uid = 13626447 & Do = Blog & cuid = 392987   Usage: Create Table Test(Id int unsigned not null primary key auto_increment,Username varchar (15) not null)Auto_increment = 100; In database

Repeated values in the innodb auto-increment column _ MySQL

Repeated innodb auto-increment column values 1. duplicate values in the innodb auto-increment column Start with the problem and reproduce the bug. use test;drop table t1;create table t1(id int auto_increment, a int, primary key (id))

How does SQL Server modify the auto-increment column value and corresponding solutions?

How does SQL Server modify the auto-increment column value and corresponding solutions? A special task encountered in today's work is to change the values of the two auto-incrementing columns.Since the SQL Server platform has previously migrated the

MySQL auto increment-the mysql auto_increment attribute

MySQL faq:how do I define a MySQL auto increment field?Here's an example of the normally create a MySQL auto Increment (auto_increment) field:CREATE TABLE pizzas ( ID int auto_increment NOT NULL, name varchar (+) NOT NULL, primary key (ID));  As

MySQL tutorial-When AUTO_INCREMENT auto-increment encounters 0

MySQL tutorial-When AUTO_INCREMENT auto-increment encounters 0 DBAs familiar with SQL Server know that if you want to display the auto-increment values in SQL Server, except for the auto-increment columns in the INSERT statement, you also need to

[PHP] MySQL obtains the primary key (auto-increment ID) and mysql primary key of the inserted data.

[PHP] MySQL obtains the primary key (auto-increment ID) and mysql primary key of the inserted data.   To prevent primary key conflicts, auto-increment (auto_increment type) fields are often used in DB Design. Therefore, the primary key of the

Primary key in MySQL and its auto-increment usage tutorial _ MySQL

This article mainly introduces the primary key in MySQL and the usage tutorial for setting auto-increment. it is the basic knowledge in MySQL getting started. if you need it, refer 1. primary key declaration method:You can add a primary key to the

Common MySQL auto-increment Fields

To learn about the MySQL database, MySQL auto-increment fields are one of the most basic parts. The following describes some common statements for MySQL auto-increment fields. I hope this will help you learn about MySQL auto-increment fields. 1.

[PHP] obtain the primary key of the inserted data from MySQL (auto-increment ID)

[PHP] MySQL obtains the primary key (auto-increment ID) of the inserted data. to prevent primary key conflicts, the auto-increment (auto_increment type) field is often used during database design. Therefore, the primary key of the modified record is

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