public Queryable <T> Sum(SqlExpression expression, string alias)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
Fields.Add(SqlExpression.Alias(SqlExpression.Function("SUM", expression), alias));
return(this);
}
public Queryable <T> Sum(Expression <Func <T, object> > field, string alias)
{
Fields.Add(SqlExpression.Alias(SqlExpression.Function("SUM", SqlExpression.Field(field)), alias));
return(this);
}
