private string GetAggregateName(Grouping.AggregateMethod method)
{
switch (method)
{
case Grouping.AggregateMethod.Count:
return("COUNT");
case Grouping.AggregateMethod.Sum:
return("SUM");
case Grouping.AggregateMethod.Average:
return("AVG");
case Grouping.AggregateMethod.Maximum:
return("MAX");
case Grouping.AggregateMethod.Minimum:
return("MIN");
case Grouping.AggregateMethod.Deviation:
return("STDEV");
case Grouping.AggregateMethod.DeviationPopulation:
return("STDEVP");
case Grouping.AggregateMethod.Variance:
return("VAR");
case Grouping.AggregateMethod.VariancePopulation:
return("VARP");
default:
throw new NotSupportedException($"Invalid '{method}' aggregate method.");
}
}
public AggregateExpression(Grouping.AggregateMethod method, params IExpression[] arguments) : base(method.ToString(), MethodType.Function, arguments)
{
this.Method = method;
}
