TTMSFNCDataGrid.GroupDistinct Method
Shows the number of distinct values of a column for every group.
API unit family: TMSFNCDataGrid
Declaring type: TTMSFNCDataGrid
Inherited from: TTMSFNCCustomDataGrid
Overloads
Overload 1
Shows the number of distinct values of a column for every group.
procedure GroupDistinct(AColumn: Integer; ACalculationOptionsCallback: TTMSFNCDataGridDataGetColumnCalculationOptionsCallback = nil); overload;
void __fastcall GroupDistinct(int AColumn, Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback ACalculationOptionsCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback())/* overload */;
Parameters
| Name | Description |
|---|---|
AColumn |
Zero-based column index. |
ACalculationOptionsCallback |
Optional callback to supply per-column calculation options. |
Overload 2
Shows the number of distinct values of several columns for every group.
procedure GroupDistinct(AColumns: TArray<Integer>; ACalculationOptionsCallback: TTMSFNCDataGridDataGetColumnCalculationOptionsCallback = nil); overload;
void __fastcall GroupDistinct(System::DynamicArray<int> AColumns, Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback ACalculationOptionsCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback())/* overload */;
Parameters
| Name | Description |
|---|---|
AColumns |
Array of zero-based column indices. |
ACalculationOptionsCallback |
Optional callback to supply per-column calculation options. |