MySQL

Dynamic SQL , conditional where

SELECT first_name, last_name, subsidiary_id, employee_id
  FROM employees
 WHERE ( subsidiary_id    = :sub_id OR :sub_id IS NULL )
   AND ( employee_id      = :emp_id OR :emp_id IS NULL )
   AND ( UPPER(last_name) = :name   OR :name   IS NULL )


select * from mysql.user
where (user=NULL or NULL is null) 
and (host=NULL or NULL is null)

select * from mysql.user
where (user='root' or 'root' is null) 
and (host=NULL or NULL is null)

select * from mysql.user
where (user='root' or 'root' is null) 
and (host='127.0.0.1' or '127.0.0.1' is null)

MySql workbench Slackware64 14.1

• wget http://dev.mysql.com/get/Downloads/MySQLGUITools/mysql-workbench-community-6.1.7-1.el6.x86_64.rpm

• cp ~/Downloads/mysql-workbench-community-6.1.7-1.el6.x86_64.rpm /tmp
• cd /tmp
• rpm2tgz mysql-workbench-community-6.1.7-1.el6.x86_64.rpm
• installpkg mysql-workbench-community-6.1.7-1.el6.x86_64.tgz

mysqldump

• mysqldump -h hostx -u userx -ppassx dbname > /tmp/dump.sql

Error MariaDB 5.5 mysqldump

• mysqldump: Couldn't execute 'SET OPTION SQL_QUOTE_SHOW_CREATE=1': Unknown system variable 'OPTION' (1193)
• cp /usr/bin/mysqldump /tmp/msd
• vim /tmp/msd
• Escape,
• /SET OPTION
• R
• replace option with spaces
• Escape
• :wq

Use /tmp/msd -h hostx -u userx -ppassx dbname > /tmp/dump.sql

Show users

   1 select host,user,password from mysql.user;

Create function

User creation and grants to select and execute function

   1 create user 'userx'@'%' identified by 'passwordx';
   2 grant select on dbx.tablex to 'userx'@'%';
   3 grant execute on function dbx.hello to 'userx'@'%';