private static ProjectedColumns ProjectColumns(Expression expression, string newAlias, params string[] existingAliases)
{
return(ColumnProjector.ProjectColumns(expression, newAlias, existingAliases));
}
internal static ProjectedColumns ProjectColumns(Expression expression, string newAlias, IEnumerable <string> existingAliases)
{
ColumnProjector projector = new ColumnProjector(expression, newAlias, existingAliases);
return(new ProjectedColumns(projector.Visit(expression), projector._columns.AsReadOnly()));
}