sum method

FdcDecimal sum(
  1. String fieldName
)

Sums a numeric field over the current flat dataset view.

Null values are skipped. Empty views and all-null fields return FdcDecimal.zero. Integer and decimal fields are accumulated as FdcDecimal to avoid floating-point drift.

Implementation

FdcDecimal sum(String fieldName) =>
    _dataSet._aggregateCached(fieldName, FdcAggregate.sum) as FdcDecimal;