concurrent_usersThe ''concurrent_users'' table tracks the number of users that were using the system at any moment in the past. A new row is added every time when a number of logged in users changes from a non-zero value (i.e., when a non-first user logs in or any user logs out), but not more frequently than once a minute. (After a first login/logout within a given minute, all subsequent logins/logouts that happen within that same minute will be aggregated and written as a single record one minute after.) A new record is also created unconditionally at the configured [[contact-center-administrator-guide/ReportingSettings|Reset time for daily statistics]]. The following table offers the name (i.e., ID), data type (e.g., BIGINT, BINARY, BIT, DATETIME, ENUM, INT, VARCHAR, etc.), and description for each metric (i.e., column) of the ''concurrent_users'' table.|'''Column Name'''|'''Data Type'''|'''Description'''|-|'''num_users'''|INT|Number of users that were logged into the system in the interval specified by ''start_time'' and ''end_time''|-|'''users'''|JSON array|This is a list of usernames of users that were logged into the system in the interval specified by ''start_time'' and ''end_time''.Users are specified as JSON array of ''[username1, username2, … usernameN]'' where ''N = num_users''.|-|'''start_time'''|TIMESTAMP|Start time of the interval for which the ''num_users'' and ''users'' data in this record remains valid.Time is given in Universal Coordinated Time (UTC), and the time is rounded to a minute.Note that it is normal for this time to differ by a few seconds from the time of state changes reported in the ''agent_activity'' table.|-|'''end_time'''|TIMESTAMP|End time of the interval for which the ''num_users'' and ''users'' data in this record remains valid.Time is given in Universal Coordinated Time (UTC), and the time is rounded to a minute.Note that it is normal for this time to differ by a few seconds from the time of state changes reported in the ''agent_activity'' table.|}