`information_schema.usage_privileges.object_schema`

mysql

type: SQL_IDENTIFIER NULL

Note:

Name of the schema containing the object, if applicable, else an empty string

10-15

type: SQL_IDENTIFIER

Note:

Name of the schema containing the object, if applicable, else an empty string

8.4-9.6

Note:

Name of the schema containing the object

7.4-8.3