Improved profiling information for query part ANALYTIC FUNCTION

The query profiling of profile part ANALYTIC FUNCTION has been improved:

• GLOBAL part info is more consistent
• separate profile trace for each distinct partition by and/or order by clause (implying another expensive AF computation round)
• REMARKS column shows information about the counts of partition and order keys as well as the number of analytical functions

• #Partitionkey means the number of partition key expressions in this analytic function computation
• #Orderings means the number of different order key combinations in this analytic function computation (with the same partition keys)
• #Functions means the number of different analytic expressions in this analytic function computation