rhymix/modules/communication/queries/getMessage.xml

<query id="getMessage" action="select">
    <tables>
        <table name="member_message" />
    </tables>
    <columns>
        <column name="*" />
    </columns>
    <conditions>
        <condition operation="equal" column="message_srl" var="message_srl" notnull="notnull" />
    </conditions>
</query>