public virtual bool IsDiffFromPivot()
{
if (Bands.Any(band => band.IsDiffFromPivot()))
{
return(true);
}
foreach (var column in Columns)
{
if (column.IsAggregate)
{
if (!column.IsToDelete)
{
return(true);
}
}
else
{
if (column.IsDiffFromPivot())
{
return(true);
}
}
}
return(false);
}