Mysql auto-incrementing column leads to duplicate primary key issue analysis..., mysql primary key
A few days ago, the development of shoes reported a problem of using the load data infile command to import data primary key conflicts. After analysis,
[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
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
I have been searching for it online for a long time. Some people say that uuid is better, that is, it is easier to merge data into sub-databases and sub-tables, and some people say that auto-increment is better, when there is more data in the table,
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
I am a newbie. I have been confused for a long time. Today I decided to ask you the correct or common practices. Here is a simple example: id, title, content ,...... Label table: id. The two tables above the title obviously require auto-incrementing
"PHP" MySQL gets the primary key for inserting data (self-increment id), MySQL primary key
To prevent primary key collisions, the self-increment (auto_increment) field is often used when designing db. So before inserting the data, we often don't
[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
Go deep into the setting of automatic growth of primary keys in Mysql, SqlServer, and Oracle bitsCN.com
1. define the primary key as the automatic growth Identifier typeMySqlIn mysql, if the table's primary key is set to auto_increment type, the
Mybatis implements the oracle primary key auto-increment mechanism tutorial, mybatisoracle
How to Implement oracle primary key auto-increment using mybatis
First, let's look at how to create primary keys for the same student table, mysql, SQL
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