mysql create auto increment

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

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))

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

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

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 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

The auto-increment column here mainly refers to the auto-increment of the primary key id in a table. Unlike Mysql, Oracle cannot set the auto-increment column feature when creating a table in CREATE. Else l The auto-increment column here mainly

[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

Three methods for obtaining the MySQL auto increment Field ValueIt was found in the built-in MySQL docs. The following test program can run: ----------- The statement. getgeneratedkeys () can be obtained only after being inserted first ()1.

[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