29.12.9.2 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 29.12.9, “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.

The session_connect_attrs table has these indexes:

• Primary key on (PROCESSLIST_ID, ATTR_NAME)

TRUNCATE TABLE is not permitted for the session_connect_attrs table.