information_schema.routines.definer

mysql

type: VARCHAR NOT NULL
5.7-8

mariadb

type: NULL
Note:
If the SECURITY_TYPE is DEFINER, this value indicates which user defined this routine.
© 2022 MariaDB
5.1-10.8
type: VARCHAR NOT NULL
Note:
If the SECURITY_TYPE is DEFINER, this value indicates which user defined this routine.
© 2022 MariaDB
10.2-10.7

tidb

postgres

cockroachdb

mssql