| Interface | Description | 
|---|---|
| SQLFunction | Define the basic methods that classes that support SQL Functions
 need to implement for Classes that use them. | 
| Class | Description | 
|---|---|
| AbstractFunction | A default framework that implements the core SQLFunction interface
 requirements that can be used to build specific functions on. | 
| AggregateFunction | A container for classes that will generate SQL for the SQL99 Standard
 Aggregate functions. | 
| Avg | SQL99 Standard Average function. | 
| Count | SQL99 Standard count function. | 
| Max | SQL99 Standard max function. | 
| Min | SQL99 Standard min function. | 
| Sum | SQL99 Standard sum function. | 
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