SQL: common SQL commands

SELECT(select) - Extract data from database
UPDATE(update) - Update the data in the database
DELETE(delete) - Remove data from the database
INSERT INTO(insert into) - Insert new data into the database
CREATE DATABASE(create database) - Create a new database
ALTER DATABASE(alter database) - modify the database
CREATE TABLE(create table) - Create new table
ALTER TABLE(alter table) - change （ change ） Database table
DROP TABLE(drop table) - Delete table
CREATE INDEX(create index) - Create index （ The search button ）
DROP INDEX(drop index) - Delete index