DDL Commands Supported in MySQL

Q

How Many SQL DDL Commands Are Supported by "mysql" in MySQL?

✍: FYIcenter.com

A

There are 4 SQL Data Definition Language (DDL) commands that are supported by "mysql". They are listed below with short descriptions:

  • "CREATE dataObjectType dataObjectName" - Creates new databases, tables, views, triggers, indexes, and other data objects.
  • "RENAME dataObjectType dataObjectName" - Renames existing databases, tables, views, triggers, indexes, and other data objects.
  • "ALTER dataObjectType dataObjectName" - Alters properties of existing databases, tables, views, triggers, indexes, and other data objects.
  • "DROP dataObjectType dataObjectName" - Drops existing databases, tables, views, triggers, indexes, and other data objects.

Here is a tutorial exercise of how to use DDL commands to create a database and a table:

>cd \mysql\bin
>mysql -u root

mysql> CREATE DATABASE fyi;
Query OK, 1 row affected (0.50 sec)

mysql> CREATE TABLE articles (name VARCHAR(80));
Query OK, 0 rows affected (0.25 sec)

mysql> DROP DATABASE fyi;
Query OK, 0 rows affected (0.41 sec)

 

Command-Line End User Interface 'mysql'

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2016-10-16, 181👍, 0💬