select version(), current_date;
version()	current_date
5.0.10a-beta-nt-log	2005-07-29
DROP DATABASE IF EXISTS db_datadict;
create database db_datadict;
CREATE USER 'user_1'@'localhost';
CREATE USER 'user_2'@'localhost';
GRANT UPDATE ON db_datadict.* TO 'user_1'@'localhost';
GRANT INSERT ON *.* TO 'user_2'@'localhost';
GRANT SELECT ON mysql.user TO 'user_1'@'localhost';
FLUSH PRIVILEGES;

Problem! Here I expect more than only <USAGE> for user_1
--------------------------------------------------------
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION

add GRANT OPTION db_datadict.* to user_1
----------------------------------------
GRANT UPDATE ON db_datadict.* TO 'user_1'@'localhost' WITH GRANT OPTION;

Problem! Here I_m missing the <YES> for the GRANT OPTION for user_1
-------------------------------------------------------------------
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
connect(localhost,user_1,,db_datadict,MYSQL_PORT,c:\\MySQL\\mysql-5.0\\mysql-test\\var\\tmp\\master.sock);
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
GRANT UPDATE ON `db_datadict`.* TO 'user_1'@'localhost' WITH GRANT OPTION
GRANT SELECT ON `mysql`.`user` TO 'user_1'@'localhost'

Now add SELECT on *.* to user_1
-------------------------------
	
root@localhost	test
GRANT SELECT ON *.* TO 'user_1'@'localhost';
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	SELECT	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
GRANT SELECT ON *.* TO 'user_1'@'localhost' WITH GRANT OPTION;
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	SELECT	YES
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		Y	N	N	N	N	N	N	N	N	N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
FLUSH PRIVILEGES;
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	SELECT	YES
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		Y	N	N	N	N	N	N	N	N	N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	SELECT	YES
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		Y	N	N	N	N	N	N	N	N	N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for user_1@localhost
GRANT SELECT ON *.* TO 'user_1'@'localhost' WITH GRANT OPTION
GRANT UPDATE ON `db_datadict`.* TO 'user_1'@'localhost' WITH GRANT OPTION
GRANT SELECT ON `mysql`.`user` TO 'user_1'@'localhost'
connect(localhost,user_2,,db_datadict,MYSQL_PORT,c:\\MySQL\\mysql-5.0\\mysql-test\\var\\tmp\\master.sock);
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_2'@'localhost'	NULL	INSERT	NO
SHOW GRANTS;
Grants for user_2@localhost
GRANT INSERT ON *.* TO 'user_2'@'localhost'

revoke privileges from user_1
-----------------------------
	
root@localhost	test
REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'user_1'@'localhost';
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
ERROR 42000: SELECT command denied to user 'user_1'@'localhost' for table 'user'
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
	
user_1@localhost	db_datadict
CREATE TABLE db_datadict.tb_55 ( c1 TEXT );
ERROR 42000: CREATE command denied to user 'user_1'@'localhost' for table 'tb_55'
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
ERROR 42000: SELECT command denied to user 'user_1'@'localhost' for table 'user'
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
CREATE TABLE db_datadict.tb_66 ( c1 TEXT );
ERROR 42000: CREATE command denied to user 'user_1'@'localhost' for table 'tb_66'

add ALL on db_datadict.* (and select on mysql.user) to user_1
-------------------------------------------------------------
	
root@localhost	test
GRANT ALL ON db_datadict.* TO 'user_1'@'localhost' WITH GRANT OPTION;
GRANT SELECT ON mysql.user TO 'user_1'@'localhost';
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
GRANT ALL PRIVILEGES ON `db_datadict`.* TO 'user_1'@'localhost' WITH GRANT OPTION
GRANT SELECT ON `mysql`.`user` TO 'user_1'@'localhost'
CREATE TABLE db_datadict.tb_56 ( c1 TEXT );
ERROR 42000: CREATE command denied to user 'user_1'@'localhost' for table 'tb_56'
USE db_datadict;
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
GRANT ALL PRIVILEGES ON `db_datadict`.* TO 'user_1'@'localhost' WITH GRANT OPTION
GRANT SELECT ON `mysql`.`user` TO 'user_1'@'localhost'
CREATE TABLE tb_57 ( c1 TEXT );

revoke privileges from user_1
-----------------------------
	
root@localhost	test
REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'user_1'@'localhost';
FLUSH PRIVILEGES;
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
'user_2'@'localhost'	NULL	INSERT	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
Host	User	Password	Select_priv	Insert_priv	Update_priv	Delete_priv	Create_priv	Drop_priv	Reload_priv	Shutdown_priv	Process_priv	File_priv	Grant_priv	References_priv	Index_priv	Alter_priv	Show_db_priv	Super_priv	Create_tmp_table_priv	Lock_tables_priv	Execute_priv	Repl_slave_priv	Repl_client_priv	Create_view_priv	Show_view_priv	Create_routine_priv	Alter_routine_priv	Create_user_priv	ssl_type	ssl_cipher	x509_issuer	x509_subject	max_questions	max_updates	max_connections	max_user_connections
localhost	user_1		N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
localhost	user_2		N	Y	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N					0	0	0	0
SHOW GRANTS;
Grants for root@localhost
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
	
user_1@localhost	db_datadict
SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "%user%";
GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
'user_1'@'localhost'	NULL	USAGE	NO
SELECT * FROM mysql.user WHERE user LIKE "%user%";
ERROR 42000: SELECT command denied to user 'user_1'@'localhost' for table 'user'
SHOW GRANTS;
Grants for user_1@localhost
GRANT USAGE ON *.* TO 'user_1'@'localhost'
CREATE TABLE db_datadict.tb_58 ( c1 TEXT );
USE db_datadict;
ERROR 42000: Access denied for user 'user_1'@'localhost' to database 'db_datadict'
CREATE TABLE db_datadict.tb_59 ( c1 TEXT );
	
root@localhost	test
DROP USER 'user_1'@'localhost';
DROP USER 'user_2'@'localhost';
DROP DATABASE IF EXISTS db_datadict;