datatype for price in mysql

DatabaseI. Database Overview (! Master)1. Database: Warehouse where data is stored (understanding)Hierarchical database, network-based database, relational databaseInstallation and configuration of 2.MYSQL databaseThe installed path does not have

1. Export the entire database Mysqldump-u user name-p--default-character-set=latin1 Database name > exported file name (database default encoding is latin1) Mysqldump-u wcnc-p SMGP_APPS_WCNC > Wcnc.sql 2. Export a table Mysqldump-u user name-P

1. Display the list of databasesshow databases; # View all current databasesShow Databases \g #以行的方式显示2. On the command line, execute the SQL statementMysql-e ' show databases '-uroot-p123456mysqlshow-uroot-p123456 # not used, just remember the one

1. Connect to MYSQL: mysql-h host address-u user name-p User Password 1. Example 1: connect to MYSQL on the local machine first open the DOS window and then enter the directory mysqlbin, enter the mysql-uroot-p command and press enter to prompt you

MySQL Common commands1. Export the entire databaseMysqldump-u user name-p--default-character-set=latin1 Database name > exported file name (database default encoding is latin1)Mysqldump-u wcnc-p SMGP_APPS_WCNC > Wcnc.sql2. Export a tableMysqldump-u

Turn from the Internet.When a large system is established, it is found that a lot of SQL operations are overlapping, the individual calculations are the same, for example: In the business system, the calculation of a work order. When this happens,

First, the operation of the database1. Create a databaseCREATE DATABASE [IF not EXISTS] db_name [create_specification [, Create_specification] ...]Create_specification:[DEFAULT] CHARACTER SET Charset_name | [DEFAULT] COLLATE collation_name~ Create a

CREATE TABLE Point (ID int primary KEY auto_increment,Point_x Double,Point_y Double,boundry BOOL);One, SQL statements1. Operational database(1) Create a databaseCREATE DATABASE [IF not EXISTS] db_name [create_specification [, Create_specification] ..

One, SQL statements1. Operational database(1) Create a databaseCREATE DATABASE [IF not EXISTS] db_name [create_specification [, Create_specification] ...]Create_specification:[DEFAULT]   CHARACTER SET Charset_name | [DEFAULT] COLLATE collation_name~

"MySQL must Know"Structured Querylanguage,mysql is a database system management software software that can also be understood as a database server. Pronunciation, my Sequel,/?si?kw?l/see kuo1th. Chapter 2.3schema, outline, column. Row rows