Add example of IS NOT NULL generation
Add missing ---'s
Merge pull request #2100 from dakota/3.0-is-not-null

Add example of IS NOT NULL generation
Add example of using SQL function inside a where clause
Add missing ;
Add example of using any SQL function
Merge pull request #2102 from dakota/3.0-sql-functions

Add example of using any SQL function
Merge pull request #2101 from dakota/3.0-advanced-where

Add example of using SQL function inside a where clause