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The CREATE DATABASE statement creates a new CockroachDB database.
Note:
This statement performs a schema change. For more information about how online schema changes work in CockroachDB, see Online Schema Changes.
Required privileges
Only members of the admin role can create new databases. By default, the root user belongs to the admin role.
Synopsis
Parameters
| Parameter | Description |
|---|---|
IF NOT EXISTS |
Create a new database only if a database of the same name does not already exist; if one does exist, do not return an error. |
name |
The name of the database to create, which must be unique and follow these identifier rules. |
encoding |
The CREATE DATABASE statement accepts an optional ENCODING clause for compatibility with PostgreSQL, but UTF-8 is the only supported encoding. The aliases UTF8 and UNICODE are also accepted. Values should be enclosed in single quotes and are case-insensitive.Example: CREATE DATABASE bank ENCODING = 'UTF-8'. |
Example
Create a database
> CREATE DATABASE bank;
> SHOW DATABASES;
+---------------+
| database_name |
+---------------+
| bank |
| defaultdb |
| postgres |
| system |
+---------------+
(4 rows)
Create fails (name already in use)
> CREATE DATABASE bank;
pq: database "bank" already exists
> CREATE DATABASE IF NOT EXISTS bank;
SQL does not generate an error, but instead responds CREATE DATABASE even though a new database wasn't created.
> SHOW DATABASES;
+---------------+
| database_name |
+---------------+
| bank |
| defaultdb |
| postgres |
| system |
+---------------+
(4 rows)
See also
SHOW DATABASESRENAME DATABASESET DATABASEDROP DATABASE- Other SQL Statements
- Online Schema Changes
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