information_schema.columns.udt_schema

mysql

mariadb

tidb

postgres

type: SQL_IDENTIFIER NULL
Note:
Name of the schema that the column data type (the underlying type of the domain, if applicable) is defined in
© 1996-2022 The PostgreSQL Global Development Group
10-15
type: SQL_IDENTIFIER
Note:
Name of the schema that the column data type (the underlying type of the domain, if applicable) is defined in
© 1996-2022 The PostgreSQL Global Development Group
7.4-9.6

cockroachdb

type: unknown
Note:
Name of the column data type's schema.
© 2022 CockroachDB
20.1-21.2

mssql