Importing a text file containing a list of SQL commands into MySQL is a straightforward task. All you need to do is simply feed the file contents through pipe into MySQL command line client. For example: mysql app_production < dump.sql. The reasons for doing such imports can be very different - restoring MySQL backups created with mysqldump, manually replaying binary log events or performing database migrations during software roll-outs. While the task is simple, the import may not end successfully and when this happens, how to tell what the problem was?
Read MoreMySQL lets database administrators define access rights on many levels – from the ability to run global commands down to access to individual columns. Some rights can be applied to many different objects, such as for example SELECT or UPDATE, which can be granted globally or restricted only to certain databases or tables, while others are only meant for one specific purpose. An example of the latter could be FILE privilege, which permits user to interact with the file system from inside a database instance. It only makes sense as the global right and not anywhere else.
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