Mysql commands movie#
Mysql commands update#
Mysql commands code#

Mysql commands update#

To update data only in a specified set of rows you can use WHERE clause: UPDATE table_name Similarly, you can use different clauses to update all or specified rows in your table. DELETE FROM movies WHERE budget='1' Update Rows Use SELECT FROM syntax and WHERE clause to specify what rows to delete. SELECT * FROM movies WHERE year='2020' AND rating='9' Delete a Row Include an additional pointer that indicates what type of data do you need. SELECT value1, value2 FROM field1 Add an Additional Selection Clause Specify what kind of information you want to retrieve from a certain row. Add New Column ALTER TABLE tableДЄDD column_name Delete/Drop a Column ALTER TABLE table_nameДROP column_name Insert New Row INSERT INTO table_name (field1, field2. When designing columns for your database, your goal is to select the optimal length to avoid wasted space and maximize performance.Д«elow are the key commands for working with tables.

Mysql commands movie#

movie director names).Д¬olumns are defined by different storage types:ДЄn in-depth overview comes in the next section!

Use columns to store alike information that shares the same attribute (e.g. Working With Table Columns Working With Table Columns (Expand) To get rid of the table specify the table name in the following command: DROP TABLE tablename

DESCRIBE table_name column_name - review the information of the column in your table.

DESCRIBE table_name - see the columns of your table.

SHOW TABLES - call a list of all tables associated with a database.

Use the next commands to get more information about the tables stored in your database.

Mysql commands code#

The code snippet below features a table for a list of movies that we want to organize by different attributes: CREATE TABLE movies( Use this command to create a new table: CREATE TABLE table_name( You have plenty of options for customization using the commands below. Each row consists of columns that feature a specified data type. Tables are the key element of MySQL databases as they let you store all the information together in organized rows. If you are done for the day, just type вЂњ exitвЂќ in the command line to finish your session.Д®ssential MySQL Commands Essential MySQL Commands (Expand) To get rid of a database just type: DROP DATABASE dbName Later on, you can quickly navigate to a particular database using this command: ~]# mysql -u root -p mydatabase < radius.sql Delete a MySQL Database You can then view all your databases with this command: mysql> show databases To set up a new database use this line: CREATE DATABASE yourcoolname If you need to delete a user later on you, use this command: DROP USER Create a New Database To do that, run the following command: CREATE USER IDENTIFIED BY 'password' Next, you can create a new test user for practice.

If you didnвЂ™t set a password for your MySQL root user, you omit the -p switch. To start working with MySQL, youвЂ™ll need to establish an active SSH session on your server.

Keeping this in mind, letвЂ™s get started with actual coding. Again, any text that is beyond the slashes lines will be ignored by the compiler. Multi-Line Comments: These start with /* and end with */.Any text that goes after the dash and till the end of the line will not be taken into account by the compiler. Single-Line Comments: These start with вЂњ вЂ“вЂќ.You can write two types of comments in MySQL: Similar to other programming languages like PHP, JavaScript, HTML, and jQuery, MySQL relies on commenting to execute any commands.