25.12.8.3 The users Table
The users
table contains a row for each user who has connected to the MySQL server. For each user name, the table counts the current and total number of connections. The table size is autosized at server startup. To set the table size explicitly, set the performance_schema_users_size
system variable at server startup. To disable user statistics, set this variable to 0.
The users
table has the following columns. For a description of how the Performance Schema maintains rows in this table, including the effect of TRUNCATE TABLE
, see Section 25.12.8, “Performance Schema Connection Tables”.
USER
The client user name for the connection. This is
NULL
for an internal thread, or for a user session that failed to authenticate.CURRENT_CONNECTIONS
The current number of connections for the user.
TOTAL_CONNECTIONS
The total number of connections for the user.