private static string GetColumnReference(int index, QueryColumnInstanceSymbol column)
{
if (!string.IsNullOrEmpty(column.Name))
{
return(SyntaxFacts.GetValidIdentifier(column.Name));
}
var ordinal = index + 1;
return(ordinal.ToString(CultureInfo.InvariantCulture));
}
private static BoundQuery CreateBoundQuery(BoundExpression expression)
{
var factory = new ValueSlotFactory();
var valueSlot = new ValueSlot(factory, @"result", 0, expression.Type);
var computedValue = new BoundComputedValue(expression, valueSlot);
var constantRelation = new BoundConstantRelation();
var computeRelation = new BoundComputeRelation(constantRelation, new[] { computedValue });
var projectRelation = new BoundProjectRelation(computeRelation, new [] { valueSlot });
var columnSymbol = new QueryColumnInstanceSymbol(valueSlot.Name, valueSlot);
return(new BoundQuery(projectRelation, new[] { columnSymbol }));
}
public BoundOrderByColumn(QueryColumnInstanceSymbol queryColumn, BoundComparedValue comparedValue)
{
QueryColumn = queryColumn;
ComparedValue = comparedValue;
}
public BoundSelectColumn(QueryColumnInstanceSymbol column)
{
Column = column;
}