increment meaning

1 InnoDB The problem of duplicate values in the self-increment columnStart with the problem and reproduce the bugUse Test;drop table t1;create table T1 (ID int. auto_increment, a int, primary key (ID)) Engine=innodb;insert into T1 values INSERT into

Background:Self-growth is a very common data attribute, and in MySQL everyone is willing to let the field of the self-growth attribute be a primary key. In particular InnoDB, because of the characteristics of the InnoDB clustered index, using fields

The auto-increment auto_increment function in mysql is believed to have been used by every phper. This article will share with you the specific viewing and setting methods of the mysql Field Auto-increment function. The auto-increment auto_increment

Author:hiuCorrection: Today (2014-07-07) only discovered the problem, I put @id in the entity class ID, @Id is the primary key, should be set in the entity class Keyjobno, the previous article may mislead everyone, now correct, see the following red

Hibernate uses MySQL's self-growth id attribute to coexist with self-growth ID and manual assignment IDWe know that in MySQL if the table ID is set to the self-growth attribute, if the ID assignment (value is not used) in the INSERT statement, then

Author:hiuRecently changed from Ibatis to Hibernate, encountered a series of problems, and today, there is a problem, because the problem of self-added column caused by saving the Times wrong, now recorded, so that later forgotten when the viewThis

Like C, Java provides a rich shortcut for computing. These shortcuts can make the code more refreshing, easier to input, and easier for readers to read.Two good shortcuts are the increment and decrement operators (often referred to as "AutoIncrement"

Mycat global auto-increment, mycat global Auto-increment type [Root @ node002 conf] # vi/usr/local/mycat/conf/server. xml Meaning of each parameter: 0: Local File Auto-increment mode. 1: use mysql auto-increment. 2: Use the local timestamp to

The auto-increment auto_increment function in mysql is believed to have been used by every phper and knows how to set the field to an auto-increment field. However, not all phper know how to set the starting value and increment value of

The auto-increment auto_increment function in mysql is believed to have been used by every phper and knows how to set the field to an auto-increment field. However, not all phper know how to set the starting value and increment value of