Dynamic List for IN Operator

Question

I'm just wondering if there is anyway this is possible. I have a function which generates a list of ids which I am using in my where clause. It looks something like the following:
SELECT blah from blahblah
WHERE blahblahblah IN function_blah(####)
function_blah returns a list of values. Is there anyway to rewrite this to work.

Answer 1

Thanks for the help everybody, but it looks like this actually ruins the performance enhancements I was trying to acheive. It calls the function for every row in eb_par as opposed to the valid rows in rpr_par at the time of the join.
SELECT DISTINCT eb.circuitid AS ethernetbearerid, top.topologyid AS rprringid
FROM topology top,
toprelobjects top_rel,
topconnection top_conn,
circuit rpr_seg,
port rpr_port,
port rpr_par,
port eb_par,
port eb_port,
circuit eb,
circuitcircuit eb_ef,
circuit ef
WHERE top.topologyid = #######
--AND (top.topologyid = i_SelectionID OR i_SelectionID = 0)
AND top_rel.toprelobjects2topology = top.topologyid
AND top_conn.topconnection2toprelobjects = top_rel.toprelobjectsid
AND rpr_seg.circuitid = top_conn.topconnection2object
AND rpr_port.portid IN (rpr_seg.circuit2startport, rpr_seg.circuit2endport)
AND rpr_par.portid = rpr_port.parentport2port
AND eb_par.port2card IN (SELECT * FROM TABLE(CAST (pkgrprpathsupport.getchildcard(rpr_par.port2card) AS t_numberlist)))
AND eb_port.parentport2port = eb_par.portid
AND eb_port.portid IN (eb.circuit2startport, eb.circuit2endport)
AND eb_ef.uses2circuit(+) = eb.circuitid
AND ef.circuitid(+) = eb_ef.usedby2circuit
AND eb.circuit2circuittype = ##########
AND ef.circuit2circuittype(+) = ##########
AND top.topology2topologytype = ##########
ORDER BY rprringid, ethernetbearerid;