See: Description
| Interface | Description | 
|---|---|
| BeamSqlExpressionEnvironment | 
 Environment in which a  
BeamSqlExpression is evaluated. | 
| BeamSqlExpressionExecutor | 
BeamSqlExpressionExecutor fills the gap between relational expressions in Calcite SQL and
 executable code. | 
| Class | Description | 
|---|---|
| BeamSqlExpressionEnvironments | 
 Implementations of  
BeamSqlExpressionEnvironment. | 
| BeamSqlFnExecutor | 
 Executor based on  
BeamSqlExpression and BeamSqlPrimitive. |