MySQL 8.0 C API Developer Guide
int
mysql_refresh(MYSQL *mysql,
unsigned int options)
mysql_refresh() is deprecated and is
subject to removal in a future version of MySQL. Instead,
use mysql_real_query() or
mysql_query() to execute a
FLUSH statement.
This function flushes tables or caches, or resets replication
server information. The connected user must have the
RELOAD privilege.
The options argument is a bitmask composed
from any combination of the following values. Multiple values
can be OR'ed together to perform multiple operations with a
single call.
REFRESH_GRANT
Refresh the grant tables, like FLUSH
PRIVILEGES.
REFRESH_LOG
Flush the logs, like FLUSH
LOGS.
REFRESH_TABLES
Flush the table cache, like FLUSH
TABLES.
REFRESH_HOSTS
Flush the host cache, like FLUSH
HOSTS.
REFRESH_STATUS
Reset status variables, like FLUSH
STATUS.
REFRESH_THREADS
Flush the thread cache.
REFRESH_SLAVE
On a replica server, reset the source server information
and restart the replica, like RESET
SLAVE.
REFRESH_MASTER
On a source server, remove the binary log files listed in
the binary log index and truncate the index file, like
RESET MASTER.
Commands were executed in an improper order.
The MySQL server has gone away.
The connection to the server was lost during the query.
An unknown error occurred.