AvgFunction.cs

using Queries.Core.Parts.Columns;

using System;

namespace Queries.Core.Parts.Functions;

/// <summary>
/// The "average" function to apply to a <see cref="IColumn"/>.
/// </summary>
public class AvgFunction : AggregateFunction
{
    /// <summary>
    /// Builds a new <see cref="AvgFunction"/> instance.
    /// </summary>
    /// <param name="column">The column onto which the "average" function will be applied.</param>
    public AvgFunction(IColumn column)
        : base(AggregateType.Average, column)
    { }

    /// <summary>
    /// Builds a new <see cref="AvgFunction"/> instance.
    /// </summary>
    /// <param name="columnName">The name of the column onto which the "average" function will be applied.</param>
    public AvgFunction(string columnName) : this(columnName?.Field()) { }

    ///<inheritdoc/>
    public override IColumn Clone() => new AvgFunction(Column.Clone());
}