private void AddAggregateRow(Result result, object[] row, int len, int count)
{
for (int i = 0; i < len; i++)
{
ExpressionType t = eColumn[i].Type;
if (t == ExpressionType.Average)
{
row[i] = Column.Avg(row[i], eColumn[i].ColumnType, count);
}
else if (t == ExpressionType.Count)
{
// this fixes the problem with count(*) on a empty table
if (row[i] == null)
{
row[i] = 0;
}
}
if (t == ExpressionType.RowNumber)
{
// this is copy of previous block, not sure if this block is necessary
if (row[i] == null)
{
row[i] = 0;
}
}
}
result.Add(row);
}