private/xml/all_companyfromcustomer.xml

<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
    <entity name="account">
        <attribute name="name" />
        <attribute name="primarycontactid" />
        <attribute name="accountid" />
        <attribute name="websiteurl" />
        <attribute name="address1_line1" />
        <attribute name="statecode" />
        <attribute name="winvs_location" />
        <attribute name="accountnumber" />
        <attribute name="emailaddress1" />
        <attribute name="telephone1" />
        <order attribute="name" descending="false" />
        <link-entity name="mw_customer" from="mw_accountid" to="accountid" alias="ad">
            <filter type="and">
            </filter>
        </link-entity>
    </entity>
</fetch>