Difference between revisions of "MySQL"
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| − | = Adding a user = | + | == Command-line == |
| + | === Common arguments === | ||
| + | <code>-h</code> remote host<br /> | ||
| + | <code>-u</code> remote user<br /> | ||
| + | <code>-p</code> requires password | ||
| + | |||
| + | === Connect to remote MySQL server === | ||
| + | <source lang="bash"> | ||
| + | mysql -h remote.host.com -u remoteuser -p | ||
| + | </source> | ||
| + | |||
| + | == User management == | ||
| + | |||
| + | === Adding a user === | ||
<syntaxhighlight lang="mysql"> | <syntaxhighlight lang="mysql"> | ||
grant all privileges on {database_name}.* to {database_user}@'%' identified by 'their_password'; | grant all privileges on {database_name}.* to {database_user}@'%' identified by 'their_password'; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | = Revoking privileges = | + | === Revoking privileges === |
| + | <syntaxhighlight lang="mysql"> | ||
| + | revoke usage on {databse_name}.* from {database_user}@'%'; | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | === Removing a user === | ||
<syntaxhighlight lang="mysql"> | <syntaxhighlight lang="mysql"> | ||
| − | + | drop user {database_user}@'%'; | |
</syntaxhighlight> | </syntaxhighlight> | ||
| − | = | + | == Triggers == |
| + | |||
| + | === Before === | ||
| + | * OLD table name does not exist here | ||
<syntaxhighlight lang="mysql"> | <syntaxhighlight lang="mysql"> | ||
| − | + | create trigger {trigger_name} before [update|insert|delete] on {table_name} | |
| + | for each row begin | ||
| + | insert into {new_table} (col1, col2, col3) values (OLD.col1, OLD.col2, OLD.col3) | ||
| + | end | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | === After === | ||
| + | * OLD and NEW table names can be used to access the old value and the new value respectively | ||
| + | <syntaxhighlight lang="mysql"> | ||
| + | create trigger {trigger_name} after [update|insert|delete] on {table_name} | ||
| + | for each row begin | ||
| + | insert into {new_table} (col1, col2, col3) values (OLD.col1, NEW.col2, OLD.col3) | ||
| + | end | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | == Importing == | ||
| + | |||
| + | === From CSV === | ||
| + | <syntaxhighlight lang="mysql"> | ||
| + | load data local infile 'file_name.csv' into table table_name | ||
| + | fields terminated by ',' enclosed by '"' | ||
| + | lines terminated by '\n' | ||
| + | |||
| + | (col1, col2, coln, ...) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 02:35, 11 January 2015
Contents
Command-line
Common arguments
-h remote host
-u remote user
-p requires password
Connect to remote MySQL server
mysql -h remote.host.com -u remoteuser -pUser management
Adding a user
grant all privileges on {database_name}.* to {database_user}@'%' identified by 'their_password';Revoking privileges
revoke usage on {databse_name}.* from {database_user}@'%';Removing a user
drop user {database_user}@'%';Triggers
Before
- OLD table name does not exist here
create trigger {trigger_name} before [update|insert|delete] on {table_name}
for each row begin
insert into {new_table} (col1, col2, col3) values (OLD.col1, OLD.col2, OLD.col3)
endAfter
- OLD and NEW table names can be used to access the old value and the new value respectively
create trigger {trigger_name} after [update|insert|delete] on {table_name}
for each row begin
insert into {new_table} (col1, col2, col3) values (OLD.col1, NEW.col2, OLD.col3)
endImporting
From CSV
load data local infile 'file_name.csv' into table table_name
fields terminated by ',' enclosed by '"'
lines terminated by '\n'
(col1, col2, coln, ...)