How MySQL creates a database at the command line

One, connect MySQL

Format: mysql-h host address-u user name-P user Password

1. Connect to MySQL on this machine.

First open the DOS window, then enter the directory Mysql\bin, and then type the command Mysql-u root-p, enter after the prompt you to lose the password. Note that the user name can have a space or no space, but before the password must have no space, or let you re-enter the password.

If you have just installed MySQL, superuser root is no password, so the direct return to enter the MySQL, MySQL prompt is: mysql>

　　

2. Connect to MySQL on the remote host. Assume the remote host IP is: 110.110.110.110, the user name is root, the password is abcd123. Type the following command:

Mysql-h110.110.110.110-u Root-p 123; (Note: You can not add a space between the root and the other)

3. Exit MySQL command: Exit (enter)

Second, change the password

Format: Mysqladmin-u username-P Old password password new password. For example

1, add a password to root ab12. First enter directory Mysql\bin under DOS, and then type the following command

Mysqladmin-u Root-password AB12

2, then change the root password to djg345.

Mysqladmin-u root-p ab12 password ******

Third, create the database

1, CREATE database name;

2. GRANT select,insert,update,delete,create,drop,alter on database name. * To database name @localhost identified by ' password ';

3. SET PASSWORD for

' Database name ' @ ' localhost ' = old_password (' password ');

Execute 3 commands in turn to complete the database creation. Note: The Chinese "password" and "database" are the user's own needs to set.

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Now, let's introduce some common MySQL commands

Note: You must first log in to MySQL, the following actions are performed at the prompt of MySQL, and each command ends with a semicolon.

First, the Operation skill

1, if you hit the command, enter after the discovery forgot to add a semicolon, you do not have to re-play the command, as long as a semicolon to enter the return on it.

In other words, you can break a complete command into a few lines, and then use a semicolon to make the end sign OK.

2. You can use the cursor up and down keys to recall the previous command.

Ii. Common Commands

1. Displays the list of databases in the current database server:

Mysql> SHOW DATABASES;

2. Establish the database:

mysql> CREATE database name;

3. Set up the data sheet:

mysql> use library name;

mysql> CREATE table name (field name VARCHAR (20), Field name CHAR (1));

4. Delete the database:

mysql> DROP database name;

5. Delete Data sheet:

mysql> DROP table name;

6. Empty the records in the table:

Mysql> DELETE from table name;

7. Insert a record into the table:

mysql> INSERT into table name VALUES ("HyQ", "M");

8. Update the data in the table:

mysql-> UPDATE table name SET field name 1= ' A ', field name 2= ' B ' WHERE field name 3= ' C ';

9. Load data into the data table in text mode:

mysql> LOAD DATA LOCAL INFILE "d:/mysql.txt" into table name;

10. Import the. sql File command:

mysql> use database name;

Mysql> SOURCE D:/mysql.sql;

11, the command line to modify the root password:

mysql> UPDATE mysql.user SET password=password (' New password ') WHERE user= ' root ';

mysql> FLUSH privileges;

A city build and build tables and instances of inserting data

Drop database if exists school; Delete if Sudu is present

Create DATABASE Sudu; Building a library Sudu

Use school; Open Library Sudu

CREATE TABLE teacher//Create tables Teacher

(

ID int (3) auto_increment NOT null primary key,

Name Char (TEN) is not NULL,

Address varchar (+) Default ' Shenzhen ',

Year Date

); End of Build table

The following is the Insert field

Insert into teacher values (' ', ' Allen ', ' Fly number technology 1 ', ' 2005-10-10 ');

Insert into teacher values (' ', ' Jack ', ' Flight number Technology 2 ', ' 2005-12-23 '); If you type the above command at the MySQL prompt, it is not easy to debug.

(1) You can write the above command as-is to a text file, assume Sudu.sql, then copy to c:\\, and enter directory \mysql\bin in DOS, and then type the following command:

Mysql-uroot-p Password < C:\sudu.sql

If successful, empty a row without any display, and if there is an error, there is a hint. (The above command has been debugged, you can use it only if you remove//comment).

(2) or enter the command line after using mysql> source C:\sudu.sql; You can also import the Sudu.sql file into the database.

Iv. transferring text data to the database

1, the text data should conform to the format: The field data is separated by the TAB key, the null value is replaced by \ n. Example:

3 Rose Flying Number Technology 1 1976-10-10

4 Mike Flying number technology 2 1975-12-23

Suppose you save these two sets of data as speed sudu.txt files, placed in the C packing directory.

2, the data incoming command, load data local infile "C:\sudu.txt" into the table name;

Note: You might want to copy the file to the \mysql\bin directory, and use the using command to hit the library that contains the table.

V. BACKUP DATABASE: (command executed in DOS \mysql\bin directory)

1. Export the entire database

The export file is present in the Mysql\bin directory by default

Mysqldump-u user name-p database name > exported file name

Mysqldump-u user_name-p123456 database_name > Outfile_name.sql

2. Export a table

Mysqldump-u user name-P database name Table name > exported file name

MYSQLDUMP-U USER_NAME-P database_name table_name > OUTFILE_NAME.SQL

3. Export a database structure

Mysqldump-u User_name-p-D--add-drop-table database_name > Outfile_name.sql

-D No data--add-drop-table add a drop table before each CREATE statement

4. Export with language parameters

Mysqldump-uroot-p--default-character-set=latin1--SET-CHARSET=GBK--skip-opt database_name > Outfile_name.sql

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How MySQL creates a database at the command line