SSL create_drop_role.result Interaktion und Portierbarkeitunbekannt
CREATE ROLE IFNOT EXISTS role1 WITH ADMIN user1;
Warnings:
Note 1446 The user specified as a definer ('user1'@'%') does not exist
SELECT * FROM mysql.roles_mapping;
Host User Role Admin_option
% user1 role1 Y
DROP ROLE role1;
CREATE ORREPLACE ROLE role1 WITH ADMIN user2;
Warnings:
Note 1446 The user specified as a definer ('user2'@'%') does not exist
SELECT * FROM mysql.roles_mapping WHERE Role='role1';
Host User Role Admin_option
% user2 role1 Y
CREATE ORREPLACE ROLE role1 WITH ADMIN user3;
Warnings:
Note 1446 The user specified as a definer ('user3'@'%') does not exist
SELECT * FROM mysql.roles_mapping WHERE Role='role1';
Host User Role Admin_option
% user3 role1 Y
CREATE ROLE IFNOT EXISTS role1 WITH ADMIN user4;
Warnings:
Note 1446 The user specified as a definer ('user4'@'%') does not exist
Note 1975 Can't create role 'role1'; it already exists
SELECT * FROM mysql.roles_mapping WHERE Role='role1';
Host User Role Admin_option
% user3 role1 Y
DROP ROLE IF EXISTS role1;
SELECT * FROM mysql.roles_mapping WHERE Role='role1';
Host User Role Admin_option
DROP ROLE IF EXISTS role1;
Warnings:
Note 1976 Can't drop role 'role1'; it doesn't exist
CREATE ROLE role_1;
CREATE ROLE IFNOT EXISTS role_1;
Warnings:
Note 1975 Can't create role 'role_1'; it already exists
CREATE ORREPLACE ROLE role_1;
CREATE ORREPLACE ROLE IFNOT EXISTS role_1; ERROR HY000: Incorrect usage of ORREPLACEandIFNOT EXISTS
CREATE ROLE role_1; ERROR HY000: Operation CREATE ROLE failed for 'role_1'
CREATE USER u1@localhost;
REVOKE SHOW DATABASES ON *.* FROM 'u1'@'localhost';
GRANT SHOW DATABASES ON *.* TO role_1;
GRANT role_1 TO u1@localhost;
connect user_a, localhost, u1,,;
connection user_a;
SELECT CURRENT_USER;
CURRENT_USER
u1@localhost
SHOW DATABASES;
Database
information_schema
SELECT CURRENT_ROLE;
CURRENT_ROLE
NULL SET ROLE role_1;
SELECT CURRENT_ROLE;
CURRENT_ROLE
role_1
SHOW DATABASES;
Database
information_schema
mtr
mysql
performance_schema
sys
test SET ROLE NONE;
connect user_b, localhost, root,,;
connection user_b;
# Clearing up
DROP ROLE role_1;
DROP ROLE IF EXISTS role_1;
Warnings:
Note 1976 Can't drop role 'role_1'; it doesn't exist
DROP ROLE role_1; ERROR HY000: Operation DROP ROLE failed for 'role_1'
disconnect user_a;
DROP USER u1@localhost;
CREATE ROLE r;
GRANT SHOW DATABASES ON *.* TO r;
CREATE USER foo;
CREATE USER bar;
GRANT r TO foo;
CREATE ORREPLACE USER foo IDENTIFIED WITH non_existing_plugin; ERROR HY000: Plugin 'non_existing_plugin' is not loaded
DROP ROLE r;
DROP USER bar;
Messung V0.5 in Prozent
[Verzeichnis aufwärts0.19unsichere VerbindungÜbersetzung europäischer Sprachen durch Browser2026-10-08]