Hướng dẫn install mysql client
Installing and Starting MySQLThere are different ways to install MySQL. The following covers the easiest methods for installing and starting MySQL on different platforms.
Connecting to the MySQL Server with the mysql Client Once your MySQL server is up and running, you can connect to it as the superuser
You are then asked for the
If you have forgotten the Once you are connected to the MySQL server, a welcome message is displayed and the
At this point, if you have logged in using a temporary
Until you change your Here are a few useful things to remember when using the mysql client:
To
disconnect from the MySQL server, type
Some Basic Operations with MySQLHere are some basic operations with the MySQL server. SQL Statements explains in detail the rich syntax and functionality of the SQL statements that are illustrated below. Showing existing databases. Use a SHOW DATABASES statement:
Creating a new database. Use a CREATE DATABASE statement:
Check if the database has been created:
Creating a table inside a database. First, pick the database in which you want to create the table with a USE statement:
The USE statement tells MySQL to use
Data types you can use in each column are explained in
Data Types. Primary Key Optimization explains the concept of a primary key. What follows a Check if the table has been created with a SHOW TABLES statement:
DESCRIBE shows information on all columns of a table:
Adding records into a table. Use, for example, an INSERT...VALUES statement:
See Literal Values for how to write string, date, and other kinds of literals in MySQL. Retrieving records from a table. Use a SELECT statement, and “*” to match all columns:
To select specific columns and rows by a certain condition using the
Deleting a record from a table. Use a DELETE statement to delete a record from a table, specifying the criterion for deletion with the
Adding or deleting a column from a table. Use an ALTER TABLE...ADD statement to add a column. You
can use, for example, an
Use DESCRIBE to check the result:
SHOW CREATE TABLE shows a CREATE TABLE statement, which provides even more details on the table:
Use ALTER TABLE...DROP to delete a column:
See the Tutorial for more instructions on how to work with the MySQL server. Other Important Tasks to PerformCreate more user accounts. Configure MySQL to be managed with systemd. If you have installed MySQL on a systemd platform using generic binaries and want it to be managed with systemd, see Managing MySQL Server with systemd. TroubleshootingThe following are resources for troubleshooting some problems you might run into:
Other Helpful Resources
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