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8.2.6 Optimizing Database Privileges
The more complex your privilege setup, the more overhead applies
to all SQL statements. Simplifying the privileges established by
GRANT statements enables MySQL to
reduce permission-checking overhead when clients execute
statements. For example, if you do not grant any table-level or
column-level privileges, the server need not ever check the
contents of the tables_priv and
columns_priv tables. Similarly, if you place
no resource limits on any accounts, the server does not have to
perform resource counting. If you have a very high
statement-processing load, consider using a simplified grant
structure to reduce permission-checking overhead.
Document created the 26/06/2006, last modified the 26/10/2018
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