set global secure_auth=0; Warnings: Warning 1287 '@@secure_auth' is deprecated and will be removed in a future release create user test_nopw; grant select on test.* to test_nopw; create user test_oldpw identified by password "09301740536db389"; grant select on test.* to test_oldpw; create user test_newpw identified by "newpw"; grant select on test.* to test_newpw; select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() test select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() NULL select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() NULL select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() NULL select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() NULL select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() test select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() test select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() test select concat('<', user(), '>'), concat('<', current_user(), '>'), database(); concat('<', user(), '>') concat('<', current_user(), '>') database() test drop user test_nopw; drop user test_oldpw; drop user test_newpw; Bug#20023 SELECT @@session.sql_big_selects; @@session.sql_big_selects 1 SELECT @@global.max_join_size; @@global.max_join_size HA_POS_ERROR change_user SELECT @@session.sql_big_selects; @@session.sql_big_selects 1 SELECT @@global.max_join_size; @@global.max_join_size HA_POS_ERROR SET @@global.max_join_size = 10000; SET @@session.max_join_size = default; change_user SELECT @@session.sql_big_selects; @@session.sql_big_selects 0 SET @@global.max_join_size = 18446744073709551615; SET @@session.max_join_size = default; change_user SELECT @@session.sql_big_selects; @@session.sql_big_selects 1 SELECT @@global.max_join_size; @@global.max_join_size 18446744073709551615 SELECT @@session.max_join_size; @@session.max_join_size 18446744073709551615 Bug#31418 SELECT IS_FREE_LOCK('bug31418'); IS_FREE_LOCK('bug31418') 1 SELECT IS_USED_LOCK('bug31418'); IS_USED_LOCK('bug31418') NULL SELECT GET_LOCK('bug31418', 1); GET_LOCK('bug31418', 1) 1 SELECT IS_USED_LOCK('bug31418') = CONNECTION_ID(); IS_USED_LOCK('bug31418') = CONNECTION_ID() 1 change_user SELECT IS_FREE_LOCK('bug31418'); IS_FREE_LOCK('bug31418') 1 SELECT IS_USED_LOCK('bug31418'); IS_USED_LOCK('bug31418') NULL FLUSH STATUS; Value of com_select did not change set global secure_auth=default; Warnings: Warning 1287 '@@secure_auth' is deprecated and will be removed in a future release set timestamp=unix_timestamp('2010-10-10 10:10:10'); select now(); now() 2010-10-10 10:10:10 select year(now()) > 2011; year(now()) > 2011 0 change_user select year(now()) > 2011; year(now()) > 2011 1