How do I view the grants (access rights) for a given user in MySQL?
If you're already running a web server with PHP then phpMyAdmin is a fairly friendly administrative tool.
You might want to check out mk-show-grants from Maatkit, which will output the current set of grants for all users in a canonical form, making version control or replication more straightforward.
An alternative method for recent versions of MySQL is:
select * from information_schema.user_privileges where grantee like "'user'%";
The possible advantage with this format is the increased flexibility to check "user's" grants from any host (assuming consistent user names) or to check for specific privileges with additional conditions (eg, privilege_type = 'delete').
This version is probably better suited to use within a script while the "show grants" syntax is better for interactive sessions (more "human readable").
Can i use syntax like "Show grants on db_name.user_name for user;" to check, for example, INSERT-privileges for current user? Whot's alternative way? Create transaction to insert and Rollback? (i think, it's bad way)