drop tables if exists t1, t2; drop view if exists v1; delete from mysql.user where user like 'mysqltest\_%'; delete from mysql.db where user like 'mysqltest\_%'; delete from mysql.tables_priv where user like 'mysqltest\_%'; delete from mysql.columns_priv where user like 'mysqltest\_%'; flush privileges; create table t1 (a int, b datetime); create table t2 (c int, d datetime); create user mysqltest_1@localhost; grant all privileges on test.* to mysqltest_1@localhost; connect tzuser, localhost, mysqltest_1,,; connection tzuser; show grants for current_user(); Grants for mysqltest_1@localhost GRANT USAGE ON *.* TO `mysqltest_1`@`localhost` GRANT ALL PRIVILEGES ON `test`.* TO `mysqltest_1`@`localhost` set time_zone= '+00:00'; set time_zone= 'Europe/Moscow'; select convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC'); convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC') 2004-10-21 15:00:00 select convert_tz(b, 'Europe/Moscow', 'UTC') from t1; convert_tz(b, 'Europe/Moscow', 'UTC') update t1, t2 set t1.b = convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC') where t1.a = t2.c and t2.d = (select max(d) from t2); select * from mysql.time_zone_name; ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone_name` select Name, convert_tz('2004-10-21 19:00:00', Name, 'UTC') from mysql.time_zone_name; ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone_name` connection default; disconnect tzuser; connection default; delete from mysql.db where user like 'mysqltest\_%'; flush privileges; grant all privileges on test.t1 to mysqltest_1@localhost; grant all privileges on test.t2 to mysqltest_1@localhost; connect tzuser2, localhost, mysqltest_1,,; connection tzuser2; show grants for current_user(); Grants for mysqltest_1@localhost GRANT USAGE ON *.* TO `mysqltest_1`@`localhost` GRANT ALL PRIVILEGES ON `test`.`t2` TO `mysqltest_1`@`localhost` GRANT ALL PRIVILEGES ON `test`.`t1` TO `mysqltest_1`@`localhost` set time_zone= '+00:00'; set time_zone= 'Europe/Moscow'; select convert_tz('2004-11-31 12:00:00', 'Europe/Moscow', 'UTC'); convert_tz('2004-11-31 12:00:00', 'Europe/Moscow', 'UTC') NULL Warnings: Warning 1292 Incorrect datetime value: '2004-11-31 12:00:00' select convert_tz(b, 'Europe/Moscow', 'UTC') from t1; convert_tz(b, 'Europe/Moscow', 'UTC') update t1, t2 set t1.b = convert_tz('2004-11-30 12:00:00', 'Europe/Moscow', 'UTC') where t1.a = t2.c and t2.d = (select max(d) from t2); select * from mysql.time_zone_name; ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone_name` select Name, convert_tz('2004-11-30 12:00:00', Name, 'UTC') from mysql.time_zone_name; ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone_name` drop table t1, t2; create table t1 (a int, b datetime); create table t2 (a int, b varchar(40)); update t1 set b = '2005-01-01 10:00'; update t1 set b = convert_tz(b, 'UTC', 'UTC'); update t1 join t2 on (t1.a = t2.a) set t1.b = '2005-01-01 10:00' where t2.b = 'foo'; update t1 join t2 on (t1.a = t2.a) set t1.b = convert_tz('2005-01-01 10:00','UTC','UTC') where t2.b = 'foo'; connection default; disconnect tzuser2; delete from mysql.user where user like 'mysqltest\_%'; delete from mysql.db where user like 'mysqltest\_%'; delete from mysql.tables_priv where user like 'mysqltest\_%'; flush privileges; drop table t1, t2; create table t1 (a int, b datetime); insert into t1 values (1, 20010101000000), (2, 20020101000000); create user mysqltest_1@localhost; grant all privileges on test.* to mysqltest_1@localhost; connect tzuser3, localhost, mysqltest_1,,; create view v1 as select a, convert_tz(b, 'UTC', 'Europe/Moscow') as lb from t1; select * from v1; a lb 1 2001-01-01 03:00:00 2 2002-01-01 03:00:00 select * from v1, mysql.time_zone; ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone` drop view v1; create view v1 as select a, convert_tz(b, 'UTC', 'Europe/Moscow') as lb from t1, mysql.time_zone; ERROR 42000: ANY command denied to user 'mysqltest_1'@'localhost' for table `mysql`.`time_zone` connection default; disconnect tzuser3; drop table t1; drop user mysqltest_1@localhost;