QGIS API Documentation  3.14.0-Pi (9f7028fd23)
qgsaggregatecalculator.h File Reference
#include "qgis_core.h"
#include "qgsstatisticalsummary.h"
#include "qgsdatetimestatisticalsummary.h"
#include "qgsstringstatisticalsummary.h"
#include "qgsfeaturerequest.h"
#include <QVariant>
#include "qgsfeatureid.h"
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struct  QgsAggregateCalculator::AggregateInfo
 Structured information about the available aggregates. More...
struct  QgsAggregateCalculator::AggregateParameters
 A bundle of parameters controlling aggregate calculation. More...
class  QgsAggregateCalculator
 Utility class for calculating aggregates for a field (or expression) over the features from a vector layer. It is recommended that QgsVectorLayer::aggregate() is used rather then directly using this class, as the QgsVectorLayer method can handle delegating aggregate calculation to a data provider for remote calculation. More...