MODEL (in an aggregation)

Within an aggregation specification, a MODEL statement executes a predefined model.

Syntax

MODEL modelname [PRECOMPUTE ALL | PRECOMPUTE NA]

Arguments

modelname

A text expression that contains the name of a predefined MODEL object.

PRECOMPUTE ALL

PRECOMPUTE NA

 Specifies whether the model is a static (precomputed) model or a dynamic model.

• PRECOMPUTE ALL is the default and specifies a static model. The following conditions must be met:

  • Any RELATION (for aggregation) or MODEL statements that precede it in the aggregation specification must also be specified as PRECOMPUTE ALL.

  • Any RELATION (for aggregation) or MODEL statements that follow it in the aggregation specification can either be specified as PRECOMPUTE ALL or PRECOMPUTE NA.

• PRECOMPUTE NA specifies a dynamic model. The following conditions must be met for runtime execution of the model:

  • All RELATION (for aggregation) statements in the aggregation specification must appear before the MODEL statements specified as PRECOMPUTE NA.

  • Any additional MODEL statements that follow it in the aggregation specification must also be specified as PRECOMPUTE NA.

Examples

For an example of using a model in an aggregation specification, see Example: Solving a Model in an Aggregation.