SCHEMATA
The SCHEMATA table provides information about databases. The table data is equivalent to the result of the SHOW DATABASES statement.
USE information_schema;
desc SCHEMATA;
+----------------------------+--------------+------+------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------------------+--------------+------+------+---------+-------+
| CATALOG_NAME | varchar(512) | YES | | NULL | |
| SCHEMA_NAME | varchar(64) | YES | | NULL | |
| DEFAULT_CHARACTER_SET_NAME | varchar(64) | YES | | NULL | |
| DEFAULT_COLLATION_NAME | varchar(32) | YES | | NULL | |
| SQL_PATH | varchar(512) | YES | | NULL | |
+----------------------------+--------------+------+------+---------+-------+
5 rows in set (0.00 sec)
SELECT * FROM SCHEMATA;
+--------------+--------------------+----------------------------+------------------------+----------+
| CATALOG_NAME | SCHEMA_NAME | DEFAULT_CHARACTER_SET_NAME | DEFAULT_COLLATION_NAME | SQL_PATH |
+--------------+--------------------+----------------------------+------------------------+----------+
| def | INFORMATION_SCHEMA | utf8mb4 | utf8mb4_bin | NULL |
| def | METRICS_SCHEMA | utf8mb4 | utf8mb4_bin | NULL |
| def | mysql | utf8mb4 | utf8mb4_bin | NULL |
| def | PERFORMANCE_SCHEMA | utf8mb4 | utf8mb4_bin | NULL |
| def | test | utf8mb4 | utf8mb4_bin | NULL |
+--------------+--------------------+----------------------------+------------------------+----------+
5 rows in set (0.00 sec)
Fields in the SCHEMATA table are described as follows:
CATALOG_NAME: The catalog to which the database belongs.SCHEMA_NAME: The database name.DEFAULT_CHARACTER_SET_NAME: The default character set of the database.DEFAULT_COLLATION_NAME: The default collation of the database.SQL_PATH: The value of this item is alwaysNULL.