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CREATE USER test1@localhost; CREATE USER test2@localhost; GRANT USAGE ON *.* TO test1@localhost; GRANT USAGE ON *.* TO test2@localhost; GRANT CREATE, DROP, INSERT, SELECT ON test.* TO test1@localhost; GRANT CREATE, DROP, ALTER, UPDATE, INSERT, SELECT ON test.* TO test2@localhost; connect (test1,localhost,test1,,test,MASTER_MYPORT,MASTER_MYSOCK); SELECT current_user(); current_user() test1@localhost SHOW GRANTS FOR CURRENT_USER; Grants for test1@localhost GRANT USAGE ON *.* TO 'test1'@'localhost' GRANT SELECT, INSERT, CREATE, DROP ON `test`.* TO 'test1'@'localhost' ALTER TABLE tp EXCHANGE PARTITION p0 WITH TABLE t_10; ERROR 42000: ALTER command denied to user 'test1'@'localhost' for table 'tp' disconnect test1; connect (test2,localhost,test2,,test,MASTER_MYPORT,MASTER_MYSOCK); USE test; SELECT current_user(); current_user() test2@localhost SHOW GRANTS FOR CURRENT_USER; Grants for test2@localhost GRANT USAGE ON *.* TO 'test2'@'localhost' GRANT SELECT, INSERT, UPDATE, CREATE, DROP, ALTER ON `test`.* TO 'test2'@'localhost' ALTER TABLE tp EXCHANGE PARTITION p0 WITH TABLE t_10; SELECT * FROM t_10; a b 2 Two 4 Four 6 Six 8 Eight SELECT * FROM tp WHERE a BETWEEN 0 AND 10; a b 1 One 3 Three 5 Five 9 Nine ALTER TABLE tp EXCHANGE PARTITION p0 WITH TABLE t_10; SELECT * FROM t_10; a b 1 One 3 Three 5 Five 9 Nine SELECT * FROM tp WHERE a BETWEEN 0 AND 10; a b 2 Two 4 Four 6 Six 8 Eight ALTER TABLE tsp EXCHANGE PARTITION sp00 WITH TABLE tsp_00; SELECT * FROM tsp_00; a b SELECT * FROM tsp WHERE a BETWEEN 0 AND 10; a b 2 Two 4 Four 5 Five 6 Six 8 Eight ALTER TABLE tsp EXCHANGE PARTITION sp00 WITH TABLE tsp_00; SELECT * FROM tsp_00; a b 5 Five SELECT * FROM tsp WHERE a BETWEEN 0 AND 10; a b 2 Two 4 Four 6 Six 8 Eight disconnect test2; connection default; REVOKE ALTER ON test.* FROM test2@localhost; connect (test2,localhost,test2,,test,MASTER_MYPORT,MASTER_MYSOCK); USE test; SELECT current_user(); current_user() test2@localhost SHOW GRANTS FOR CURRENT_USER; Grants for test2@localhost GRANT USAGE ON *.* TO 'test2'@'localhost' GRANT SELECT, INSERT, UPDATE, CREATE, DROP ON `test`.* TO 'test2'@'localhost' ALTER TABLE tp EXCHANGE PARTITION p0 WITH TABLE t_10; ERROR 42000: ALTER command denied to user 'test2'@'localhost' for table 'tp' SELECT * FROM tp WHERE a BETWEEN 0 AND 10; a b 2 Two 4 Four 6 Six 8 Eight ALTER TABLE tp EXCHANGE PARTITION p0 WITH TABLE t_10; ERROR 42000: ALTER command denied to user 'test2'@'localhost' for table 'tp' ALTER TABLE tsp EXCHANGE PARTITION sp00 WITH TABLE tsp_00; ERROR 42000: ALTER command denied to user 'test2'@'localhost' for table 'tsp' ALTER TABLE tsp EXCHANGE PARTITION sp00 WITH TABLE tsp_00; ERROR 42000: ALTER command denied to user 'test2'@'localhost' for table 'tsp' connection default; disconnect test2; DROP TABLE IF EXISTS t_10; DROP TABLE IF EXISTS t_100; DROP TABLE IF EXISTS t_1000; DROP TABLE IF EXISTS tp; DROP TABLE IF EXISTS tsp; DROP TABLE IF EXISTS tsp_00; DROP TABLE IF EXISTS tsp_01; DROP TABLE IF EXISTS tsp_02; DROP TABLE IF EXISTS tsp_03; DROP TABLE IF EXISTS tsp_04; DROP TABLE IF EXISTS t_empty; DROP TABLE IF EXISTS t_null; DROP USER test1@localhost; DROP USER test2@localhost;