Question

Can any body help me in understanding if the execution plan for functions cached in SQL server?

Any online resource for this?

Answer 1

Yes they do go in the execution plan cache.

The sys.dm_exec_query_plan DMV will show a plan for given plan handle. Quote from there:

Query plans for various types of
Transact-SQL batches, such as ad hoc
batches, stored procedures, and
user-defined functions, are cached in
an area of memory called the plan
cache. Each cached query plan is
identified by a unique identifier
called a plan handle. You can specify
this plan handle with the
sys.dm_exec_query_plan dynamic
management view to retrieve the
execution plan for a particular
Transact-SQL query or batch.