There are some OData v2 query parameters that don't appear to work as of Teiid 8.7 (please see teiid forum thread 241566 on this topic). I believe these are all OData v2 conventions.

?$inlineCount=allpages&$top=N : always returns count = $top

$expand : does not appear to work (but no ostensible error)

$count : "TEIID30088 Unrelated order by column g0.SYSID cannot be used in a SET query, with SELECT DISTINCT, or GROUP BY" occurs using this URI pattern entity/$count , per the OData documentation for using this parameter