default charset utf8

CHAR Char (M) m character, length is m* character encoding length, M Max 255. The verification is as follows: mysql> CREATE table T1 (name char (256)) default Charset=utf8; ERROR 1074 (42000): column length too big for Column ' name ' (max

It takes two weeks to implement a small payment system because of its own project needs. Though small spite, all kinds of necessary modules such as account lock, transactional assurance, running water reconciliation are fully realized, the whole

A partitioned table is available for the following scenarios1: The table is so big that it can't be put all in memory, or only the last part of the tag has hot data, the others are historical data2: Partitioned table data is easier to maintain. For

One, character set and validation rulesA character set is a set of conformance and encoding, a set of rules that are used to compare characters within a character set, that is, the collation of a character set. MySQL can use the pair of character

1. AppSettings Add2. Importing SQL filesSET foreign_key_checks=0;--------------------------------Table structure for ' limitdevice '------------------------ ------DROP TABLE IF EXISTS ' Limitdevice '; CREATE TABLE ' limitdevice ' (' ID ' int (one)

We've introduced the knowledge points of spring cloud and oauth2 in the previous few, and today we're going to use spring cloud and oauth2 to build Commonservice-sso services, In this section we are just building Commonservice-sso foundation

Table partitioning test usage, mainly from other blog posts and mysql5.1 reference manuals MySQL beta version: mysql5.5.28 MySQL Physical storage file (with MySQL configuration datadir decision storage path) format Introduction Database Engine to

With the company's business needs, it took two weeks to implement a small payment system, though small spite, all kinds of necessary modules such as account lock, transactional assurance, running water reconciliation are fully realized, the whole

CREATE DATABASE Db_studentinfo; Use Db_studentinfo;D rop TABLE IF EXISTS t_student; CREATE TABLE t_student (studentid varchar (+) NOT NULL, Stuno varchar (DEFAULT) NULL, stuname varchar DEFA ULT NULL, Stusex varchar (TEN) default NULL, Stubirthday

Review common points of knowledge in MySQLBoot off service mode for win version. Connect mysql command: mysql-u alex-p View all databases: show databases;use db_name; switch database show tables;  Show All tables select * from table name; Select

Create several tables ~ For a brief description, the tbl_post blog table tbl_comment comment table and the tbl_user table tbl_tag label table can directly run the following SQL statement. Create database /*! 32312 if not exists */'yii '/*! 40100

A simple example of mysql's MERGE storage engine: bitsCN.com A simple example of mysql's MERGE storage engine Role: you can merge multiple tables with the same structure into one table. Supported versions: mysql5.1 Example: Assume that there are

The code is as follows: --ACL Tables --The structure of the table ' Aclresources ' DROP TABLE IF EXISTS ' aclresources '; CREATE TABLE IF not EXISTS ' aclresources ' ( ' Rsid ' varchar (+) not NULL, ' Access ' int (4) is not NULL for default 0, '

The simple ACL code in php is as follows: -- ACL Tables -- Table structure 'aclresources' Drop table if exists 'aclresources '; Create table if not exists 'aclresources '( 'Rsid 'varchar (64) not null, 'Access' int (4) not null default 0, 'Desc'

/******rbac******/drop table if exists p39_privilege;CREATE TABLE P39_privilege(ID mediumint unsigned NOT null auto_increment comment ' Id ',Pri_name varchar (+) NOT null comment ' permission name ',Moudle_name varchar (+) NOT null default ' comment

Create a few tables ~ simple explanation, tbl_post Blog table tbl_comment Comment table, tbl_user user table Tbl_tag Tag table run the following SQL directly. CREATE DATABASE/*!32312 IF not exists*/' yii '/*!40100 DEFAULT CHARACTER SET UTF8 */; Use

Seniors, seniors, I was troubled by the question of time, especially in need of your help, please help me! Attendance time storage format problem. I used the bigint to store the timestamp. Limit: Credit card before 9 in the morning, credit card

MySQL version: 5.6.24 I. scene One: Replace into operation on a table without a primary key or a unique key CREATE TABLE ' Student ' (' SID ' varchar (6) Not NULL,' Name ' varchar ' not NULL DEFAULT ',' class ' varchar not NULL DEFAULT ',' Score '

Table structureCREATE TABLE DataSET NAMES UTF8;SET foreign_key_checks = 0;-- ------------------------------Table structure for ' class '-- ----------------------------DROP TABLE IF EXISTS ' class ';CREATE TABLE ' class ' (' CID ' int (one) not NULL

I. MySQL database start-up and loginInstallation here will not elaborate. Remember to configure the installation path into the environment variable after the installation is complete. Then go to the command line to start the database. Note: When