`information_schema.parameters.character_set_catalog`

mysql

type: SQL_IDENTIFIER NULL

Note:

Applies to a feature not available in PostgreSQL

10-15

type: SQL_IDENTIFIER

Note:

Applies to a feature not available in PostgreSQL

7.4-9.6

type: NULL

Note:

Always NULL.

type: NVARCHAR(128) NULL

Note:

Catalog name of the character set of the parameter. If not one of the character types, returns NULL.