Do you know you can have:

1. 32,767 database per instance of sql server
2. 2 billion tables per database
3. 1024 columns per table
4. 65,535 secondary datafiles per database
5. 256 filegroup per database
6. bytes per row - 8060
7. clustered index per table - 1
8. columns per index - 16
9. columns per select statement - 4096
10. files per database - 32,767
11. maximum file size of data - 32 TB
12. nested subqueries, transactions, Stored Procedures, triggeres - 32
13. rows per table - limited to storage space
14. tables per select statement - 256
15. Non clustered index - 249

(thanks to my friends for their contribution)