protected override SqlExpression VisitAggregate(AggregateExpression aggregate)
{
this.hasAggregate = true;
return aggregate;
}
protected override SqlExpression VisitAggregate(AggregateExpression expr)
{
this.Write(expr.AggregateName + "(");
this.Write(expr.IsDistinct ? "DISTINCT " : "");
if (expr.Argument != null)
{
this.Visit(expr.Argument);
}
else if(RequiresAsteriskWhenNoArgument(expr.AggregateName))
{
this.Write("*");
}
this.Write(") ");
return expr;
}