I have used the database engine tuning advisor, DTA, in order to improve the performance of one of my databases.
It produced a list of recommendations, mostly multicolumn statistics.
These recommendations need then to be cross checked and tested, before applying them in production.
Statistics are used by the query optimiser (whitepaper on MSDN) to track distribution of values in indexes and/or columns.
Inspired by the following reading:
MY QUESTION IS
Other than the DTA, is there any other way to find out the missing multicolumn statistics?