MySQL 8.3 Release Notes
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:
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PROCESSLIST_IDThe connection identifier for the session.
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ATTR_NAMEThe attribute name.
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ATTR_VALUEThe attribute value.
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ORDINAL_POSITIONThe order in which the attribute was added to the set of connection attributes.
The session_account_connect_attrs table has these indexes:
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Primary key on (
PROCESSLIST_ID,ATTR_NAME)
TRUNCATE TABLE is not permitted for the session_account_connect_attrs table.