title | summary | aliases | ||
---|---|---|---|---|
CREATE DATABASE | TiDB SQL Statement Reference |
An overview of the usage of CREATE DATABASE for the TiDB database. |
|
This statement creates a new database in TiDB. The MySQL terminology for 'database' most closely maps to a schema in the SQL standard.
CreateDatabaseStmt ::=
'CREATE' 'DATABASE' IfNotExists DBName DatabaseOptionListOpt
IfNotExists ::=
( 'IF' 'NOT' 'EXISTS' )?
DBName ::=
Identifier
DatabaseOptionListOpt ::=
DatabaseOptionList?
DatabaseOptionList ::=
DatabaseOption ( ','? DatabaseOption )*
DatabaseOption ::=
DefaultKwdOpt ( CharsetKw '='? CharsetName | 'COLLATE' '='? CollationName | 'ENCRYPTION' '='? EncryptionOpt )
| DefaultKwdOpt PlacementPolicyOption
PlacementPolicyOption ::=
"PLACEMENT" "POLICY" EqOpt PolicyName
| "PLACEMENT" "POLICY" (EqOpt | "SET") "DEFAULT"
The CREATE DATABASE
statement is used to create a database, and to specify the default properties of the database, such as the default character set and collation. CREATE SCHEMA
is a synonym for CREATE DATABASE
.
CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name
[create_specification] ...
create_specification:
[DEFAULT] CHARACTER SET [=] charset_name
| [DEFAULT] COLLATE [=] collation_name
If you create an existing database and does not specify IF NOT EXISTS
, an error is displayed.
The create_specification
option is used to specify the specific CHARACTER SET
and COLLATE
in the database. Currently, TiDB only supports some of the character sets and collations. For details, see Character Set and Collation Support.
mysql> CREATE DATABASE mynewdatabase;
Query OK, 0 rows affected (0.09 sec)
mysql> USE mynewdatabase;
Database changed
mysql> CREATE TABLE t1 (a int);
Query OK, 0 rows affected (0.11 sec)
mysql> SHOW TABLES;
+-------------------------+
| Tables_in_mynewdatabase |
+-------------------------+
| t1 |
+-------------------------+
1 row in set (0.00 sec)
The CREATE DATABASE
statement in TiDB is fully compatible with MySQL. If you find any compatibility differences, report a bug.