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rDBGrid
type TSummaryResults = record
define record for calculated summary
Field: TField;
Sum: double;
Min: double;
Max: double;
Avg: double;
CountValues: integer;
CountEmpty: integer;
SelSum: double;
SelMin: double;
SelMax: double;
SelAvg: double;
SelCountValues: integer;
SelCountEmpty: integer;
DistinctValueCount: integer;
DistinctValues: array of TDistinctValues;