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) A socialist is someone who will give you the shirt off *someone else's* back.