25.12.9.2 The session_connect_attrs Table

Application programs can provide key-value connection attributes to be passed to the server at connect time. For descriptions of common attributes, see Section 25.12.9, “Performance Schema Connection Attribute Tables”.

The session_connect_attrs table contains connection attributes for all sessions. To see connection attributes only for the current session, and other sessions associated with the session account, use the session_account_connect_attrs table.

The session_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.

TRUNCATE TABLE is not permitted for the session_connect_attrs table.