/// <summary>
/// Generates the 'SELECT' part of an <see cref="SubSonic.Oracle.Query.Aggregate"/>
/// </summary>
/// <param name="aggregate">The aggregate to include in the SELECT clause</param>
/// <returns>The portion of the SELECT clause represented by this <see cref="SubSonic.Oracle.Query.Aggregate"/></returns>
/// <remarks>
/// The ToString() logic moved from <see cref="SubSonic.Oracle.Query.Aggregate.ToString"/>, rather than
/// including it in the Aggregate class itself...
/// </remarks>
protected virtual string GenerateAggregateSelect(SubSonic.Oracle.Query.Aggregate aggregate)
{
bool hasAlias = !String.IsNullOrEmpty(aggregate.Alias);
if (aggregate.AggregateType == AggregateFunction.GroupBy && hasAlias)
{
return(String.Format("{0} AS {1}", aggregate.ColumnName, aggregate.Alias));
}
if (aggregate.AggregateType == AggregateFunction.GroupBy)
{
return(string.Format("{0}", aggregate.ColumnName));
}
if (hasAlias)
{
return(String.Format("{0}({1}) AS {2}", SubSonic.Oracle.Query.Aggregate.GetFunctionType(aggregate).ToUpper(),
aggregate.ColumnName, aggregate.Alias));
}
return(String.Format("{0}({1})", SubSonic.Oracle.Query.Aggregate.GetFunctionType(aggregate).ToUpper(), aggregate.ColumnName));
}
/// <summary>
/// Counts the specified column name.
/// </summary>
/// <param name="columnName">Name of the column.</param>
/// <param name="alias">The alias.</param>
/// <returns></returns>
public static Aggregate Count(string columnName, string alias)
{
Aggregate agg = new Aggregate(columnName, alias, AggregateFunction.Count);
return(agg);
}
/// <summary>
/// Sums the specified col.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate Sum(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.Sum);
return(agg);
}
/// <summary>
/// Counts the specified col.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate Count(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.Count);
return(agg);
}
/// <summary>
/// Gets the type of the function.
/// </summary>
/// <param name="agg">The agg.</param>
/// <returns></returns>
public static string GetFunctionType(Aggregate agg)
{
return(Enum.GetName(typeof(AggregateFunction), agg.AggregateType));
}
/// <summary>
/// Standards the deviation.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate StandardDeviation(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.StDev);
return(agg);
}
/// <summary>
/// Standards the deviation.
/// </summary>
/// <param name="columnName">Name of the column.</param>
/// <param name="alias">The alias.</param>
/// <returns></returns>
public static Aggregate StandardDeviation(string columnName, string alias)
{
Aggregate agg = new Aggregate(columnName, alias, AggregateFunction.StDev);
return(agg);
}
/// <summary>
/// Variances the specified col.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate Variance(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.Var);
return(agg);
}
/// <summary>
/// Variances the specified column name.
/// </summary>
/// <param name="columnName">Name of the column.</param>
/// <param name="alias">The alias.</param>
/// <returns></returns>
public static Aggregate Variance(string columnName, string alias)
{
Aggregate agg = new Aggregate(columnName, alias, AggregateFunction.Var);
return(agg);
}
/// <summary>
/// Mins the specified col.
/// </summary>
/// <param name="col">The col.</param>
/// <param name="alias">The alias.</param>
/// <returns></returns>
public static Aggregate Min(IColumn col, string alias)
{
Aggregate agg = new Aggregate(col, alias, AggregateFunction.Min);
return(agg);
}
/// <summary>
/// Mins the specified column name.
/// </summary>
/// <param name="columnName">Name of the column.</param>
/// <returns></returns>
public static Aggregate Min(string columnName)
{
Aggregate agg = new Aggregate(columnName, AggregateFunction.Min);
return(agg);
}
/// <summary>
/// Mins the specified col.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate Min(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.Min);
return(agg);
}
/// <summary>
/// Groups the by.
/// </summary>
/// <param name="columnName">Name of the column.</param>
/// <param name="alias">The alias.</param>
/// <returns></returns>
public static Aggregate GroupBy(string columnName, string alias)
{
Aggregate agg = new Aggregate(columnName, alias, AggregateFunction.GroupBy);
return(agg);
}
/// <summary>
/// Groups the by.
/// </summary>
/// <param name="col">The col.</param>
/// <returns></returns>
public static Aggregate GroupBy(IColumn col)
{
Aggregate agg = new Aggregate(col, AggregateFunction.GroupBy);
return(agg);
}
