SQL is a standard language for accessing and manipulating databases.

DESC table_name; for show structure of table

 #Change column name
 ALTER TABLE students CHANGE COLUMN name nickname VARCHAR(255);

• create table
• unique column
• Primary key
• foreign key
• Check
• Default
• Auto Increment
• View
• Inner Join
• Left Join
• Right Join
• Union (e.g. left + right)
• Update in value table
• SQL Aggregate Functions