information_schema.collations.is_compiled

mysql

type: VARCHAR NOT NULL
5.7-8

mariadb

type: NULL
Note:
Whether the collation is compiled into the server.
© 2022 MariaDB
5.1-10.8
type: VARCHAR NOT NULL
Note:
Whether the collation is compiled into the server.
© 2022 MariaDB
10.2-10.7

tidb

type: VARCHAR(3) NULL
Note:
Whether the character set is compiled into the server.
© 2022 PingCAP
4-6.1

postgres

cockroachdb

mssql