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What are the core statements of SQL language?

王林
Release: 2020-11-25 11:12:06
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The core statement of SQL language is the query statement. There are many important statements in SQL, such as [CREATE DATABASE] to create a new database and [ALTER DATABASE] to modify the database.

What are the core statements of SQL language?

#The core statement of SQL language is the query statement.

(Learning video sharing: sql video tutorial)

SQL statement is the abbreviation of structured query language Smmure Query Language, and its core is data query.

The most important DDL statements in SQL:

  • CREATE DATABASE - Create a new database

  • ALTER DATABASE - Modify the database

  • CREATE TABLE - Create a new table

  • ALTER TABLE - Alter (change) a database table

  • DROP TABLE - Delete table

  • ##CREATE INDEX - Create index (search key)

  • DROP INDEX - Delete index

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