information_schema.tables.table_collation

mysql

type: VARCHAR NULL
5.7-8

mariadb

type: NULL
Note:
Character set and collation.
© 2022 MariaDB
5.1-10.8

tidb

type: VARCHAR(32) NOT NULL
Note:
The collation of strings in the table.
© 2022 PingCAP
4-6.1

postgres

cockroachdb

mssql