| NAME | DESCRIPTION |
| BENCHMARK() | Repeatedly execute an expression |
| CHARSET()(v4.1.0) | Return the character set of the argument |
| COERCIBILITY()(v4.1.1) | Return the collation coercibility value of the string argument |
| COLLATION()(v4.1.0) | Return the collation of the string argument |
| CONNECTION_ID() | Return the connection ID (thread ID) for the connection |
| CURRENT_USER(), CURRENT_USER | Return the username and hostname combination |
| DATABASE() | Return the default (current) database name |
| FOUND_ROWS() | For a SELECT with a LIMIT clause, the number of rows that would be returned were there no LIMIT clause |
| LAST_INSERT_ID() | Value of the AUTOINCREMENT column for the last INSERT |
| ROW_COUNT()(v5.0.1) | The number of rows updated |
| SCHEMA()(v5.0.2) | A synonym for DATABASE() |
| SESSION_USER() | Synonym for USER() |
| SYSTEM_USER() | Synonym for USER() |
| USER() | Return the current username and hostname |
| VERSION() | Returns a string that indicates the MySQL server version |
