mysql field size

One: Field modifier1:null and NOT NULL modifiersLet's take a look at this example.Mysql> CREATE TABLE worker (ID int not null,name varchar (8) Not null,pass varchar (a) not null);Mysql> INSERT into worker values (1, ' HA ', ' 123456 ');Mysql> INSERT

Role of the master and slave: 1. It can be used as a backup method. 2. read/write splitting to relieve the pressure on a database MySQL master-slave backup principle: Mysql master-slave replication requires at least two Mysql services. Of course,

Preface: When the data stored in a table is particularly high, such as a single. MyD data has reached 10G, it is inevitable that the reading efficiency is very low, this time we can use to divide the data into several tables to solve the

Detailed steps for implementing mysql hot backup in linux (mysql master-slave replication) bitsCN.com Role of the master and slave: 1. it can be used as a backup method. 2. read/write splitting to relieve the pressure on a database MySQL

The role of Master and subordinate: 1. Can be used as a backup method 2. Used to achieve the separation of read and write, ease the pressure of a database MySQL master-slave backup principle: MySQL's master-slave replication is at least two

What does "size" in int (size) of MySQL mean ?, Mysqlmean What does "size" in int (size) of MySQL mean? Https://alexander.kirk.at/2007/08/24/what-does-size-in-intsize-of-mysql-mean/   Friday, August 24th, 2007 at + 0000 (UTC) by Alexander Kirk I

Recommended settings: For a single running web server, we recommend that you add: Skip-locking Skip-name-resolve Skip-networking Use "localhost" when connecting to the database in PHP. In this way, the mysql client library will overwrite and try to

This blog is a little bit long, it actually includes two content: one is the description of the MySQL field type, and the second is how to correctly select these field types in the MySQL build table process; field Type value MySQL's numeric

Because I need to use MySQL in my work, I learned from the Internet and started to practice, and finally changed from a "database cainiao" to a "quasi-Prawns" Who Can skillfully operate MySQL ,:). My learning experience is as follows. MySQL is a

MySQL Error: (2006, ' MySQL server has gone away ') the problem is that the client and MySQL server link between the broken. The reason for this is that the SQL operation is typically too long, or that the data being transmitted is too large (for