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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 contains 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.