SQLStatistics

Implement SQLStatistics. 
http://msdn.microsoft.com/en-us/library/ms711022(v=vs.85).aspx

A lot of columns are empty. I used the same query as our JDBC implementation here:
https://github.com/FoundationDB/sql-layer-adapter-jdbc/blob/master/org/postgresql/jdbc2/AbstractJdbc2DatabaseMetaData.java#L4465