TAggregateFunction
Describes a function that can be applied to a group of values producing a scalar result.
Inheritance
| Level | Ancestor | Description |
|---|---|---|
| 1 | TObject | Ultimate ancestor in a class hierarchy |
| 2 | TAggregateFunction |
Source
Code.AggregateFunction.pas (31)
Fields
| Scope | Visibility | Type | Name | Description |
|---|---|---|---|---|
| Instance | public | TText | Identifier | |
| Type | public | TList<TAggregateFunction> | All | |
| Type | public | TAggregateFunction | Count | |
| Type | public | TAggregateFunction | Sum | |
| Type | public | TAggregateFunction | Product | |
| Type | public | TAggregateFunction | Average | |
| Type | public | TAggregateFunction | Maximum | |
| Type | public | TAggregateFunction | Minimum | |
| Type | public | TAggregateFunction | SampleVariance | |
| Type | public | TAggregateFunction | PopulationVariance | |
| Type | public | TAggregateFunction | SampleStandardDeviation | |
| Type | public | TAggregateFunction | PopulationStandardDeviation | |
| Type | public | TAggregateFunction | CommaSeparated | |
| Type | public | TAggregateFunction | RoundTo |
Methods
| Scope | Visibility | Result | Name | Description |
|---|---|---|---|---|
| Instance | public | Create(Identifier: TText) | ||
| Type | public | Initialize() | ||
| Type | public | Finalize() |