Not sure. I suggest running both queries and then looking at the plan cache:
SELECT ecp.usecounts, ecp.cacheobjtype, ecp.objtype, est.text
FROM sys.dm_exec_cached_plans ecp
CROSS APPLY sys.dm_exec_sql_text(plan_handle) est
WHERE est.text LIKE '%field_enum_values%'
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".