public AstNullaryWindowExpression Update(AstNullaryWindowOperator @operator, AstWindow window)
{
if (@operator == _operator && window == _window)
{
return(this);
}
return(new AstNullaryWindowExpression(@operator, window));
}
public static string Render(this AstNullaryWindowOperator @operator)
{
return(@operator switch
{
AstNullaryWindowOperator.Count => "$count",
AstNullaryWindowOperator.DenseRank => "$denseRank",
AstNullaryWindowOperator.DocumentNumber => "$documentNumber",
AstNullaryWindowOperator.Rank => "$rank",
_ => throw new InvalidOperationException($"Unexpected nullary window operator: {@operator}.")
});
public AstNullaryWindowExpression(AstNullaryWindowOperator @operator, AstWindow window)
{
_operator = @operator;
_window = window;
}
