insert into primary key

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The difference between key, primary key, unique key and index in MySQL

Key differs from primary keyKey is usually the index synonym. If the keyword attribute primary key is given in the column definition, then primary key can also be specified as key only. The purpose of this is to be compatible with other database

Primary Key and foreign key in the database, primary key of the database

Primary Key and foreign key in the database, primary key of the database 1. What are primary keys and Foreign keys: A record in a relational database has several attributes. If one of the attribute groups (note that it is a group) uniquely

Relationship and interaction between primary key and primary key index

The definition of a primary key: A collection of columns or columns that is used to uniquely identify a row in a table. Only one primary key is allowed on a table.When we specify a primary key in the database, it is defined by a PRIMARY key

The principle and realization mechanism of primary key failure in Redis _redis

As an important mechanism for periodically cleaning up invalid data, primary key failures exist in most caching systems, and Redis is no exception. Of the many commands provided by Redis, EXPIRE, Expireat, Pexpire, Pexpireat, and Setex and Psetex

In mybatis data table (mysql), the primary key does not grow. how do I insert data (primary key needs to be inserted) to achieve auto growth of the primary key?

For example, there are three fields: Table person, person, id (mysql database, primary key, non-auto-increment), and name and pswd. In the case of auto-increment, we usually process insertintoperson (name, pswd) values (# {name}, # {pswd}) in this

[Database] About primary key and foreign key

This article is referenced from:http://blog.csdn.net/bingqingsuimeng/article/details/51595560First, what is the primary key, foreign key:There are several attributes in a record in a relational database, which can be a primary key if one of the

Introduction of primary key and foreign key in SQL database

First, what is the primary key, foreign key:There are several attributes in a record in a relational database, which can be a primary key if one of the attribute groups (note is a group) uniquely identifies a record:Student Table (School number,

How to distinguish between primary key and foreign key _mssql in SQL databases

First, what is primary key, foreign key:A record in a relational database has several properties, and if one of the attribute groups (note the group) uniquely identifies a record, the attribute group can be a primary key such as: Student form

Mysql auto-incrementing column leads to duplicate primary key issue analysis..., mysql primary key

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,

Hibernate primary key generation policy and hibernate primary key policy

Hibernate primary key generation policy and hibernate primary key policy Hibernate Primary Key Generation Policy 1. Automatic growth of identity Applicable to MySQL, DB2, and ms SQL Server. It uses the primary key generated by the database to

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