See: Description
| Class | Description | 
|---|---|
| SqlCheckConstraint | Parse tree for  UNIQUE,PRIMARY KEYconstraints. | 
| SqlColumnDeclaration | Parse tree for column. | 
| SqlCreateExternalTable | Parse tree for  CREATE EXTERNAL TABLEstatement. | 
| SqlDdlNodes | Utilities concerning  SqlNodefor DDL. | 
| SqlDropTable | Parse tree for  DROP TABLEstatement. | 
| SqlSetOptionBeam | SQL parse tree node to represent  SETandRESETstatements. |