The CREATE SCHEMA statement in SQL is used to create a new schema in your database. A schema is a container that holds database objects such as tables, views, and procedures, essentially serving as a namespace for these objects to avoid naming conflicts.
Here is the basic syntax for the CREATE SCHEMA statement:
CREATE SCHEMA schema_name
[ AUTHORIZATION owner_name ]
[ schema_element [ ... ] ]
- schema_name: This is the name of the schema you want to create.
- owner_name: This is an optional parameter specifying the user or role that will own the schema.
- schema_element: This can be optional definitions for objects to be created within the schema immediately upon creation (like tables, views, etc.).
Example:
1. Creating a simple schema:
CREATE SCHEMA my_schema;
2. Creating a schema with authorization specified:
CREATE SCHEMA my_schema AUTHORIZATION my_user;
3. Creating a schema with tables within it:
CREATE SCHEMA my_schema
AUTHORIZATION my_user
CREATE TABLE my_table (
id INT PRIMARY KEY,
name VARCHAR(100)
);
Notes:
- You need appropriate privileges to create a schema in the database.
- The specific syntax and additional options can vary slightly depending on the database management system (e.g., PostgreSQL, MySQL, SQL Server, Oracle), so be sure to check the documentation relevant to the specific SQL dialect you are using.
Always remember to ensure that the schema name adheres to the naming conventions of your database system, and it should not conflict with existing schema names.