MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4
Application programs can provide key-value connection attributes to be passed to the server at connect time. For descriptions of common attributes, see Section 29.12.9, “Performance Schema Connection Attribute Tables”.
The session_account_connect_attrs
table contains connection attributes only for the current
session, and other sessions associated with the session
account. To see connection attributes for all sessions, use
the session_connect_attrs table.
The session_account_connect_attrs
table has these columns:
PROCESSLIST_ID
The connection identifier for the session.
ATTR_NAME
The attribute name.
ATTR_VALUE
The attribute value.
ORDINAL_POSITION
The order in which the attribute was added to the set of connection attributes.
The session_account_connect_attrs
table has these indexes:
Primary key on (PROCESSLIST_ID,
ATTR_NAME)
TRUNCATE TABLE is not permitted
for the
session_account_connect_attrs
table.