//public static QueryBuilder<TResult> From<TResult>(this DbConnection connection, ICommandBuilder commandBuilder = null) where TResult : class, new()
//{
// return From<TResult>(connection, (TableOrSubQuery)null, (ICommandBuilder)null);
//}
public static QueryBuilder <TResult> From <TResult>(this DbConnection connection, TableOrSubQuery source = null, ICommandBuilder commandBuilder = null) where TResult : class, new()
{
commandBuilder = commandBuilder ?? DefaultCommandBuilder;
var discription = GlobalEntityDescriptionLookup.Instance.LookUpEntityByType(typeof(TResult));
SqlSelectBuilder builder = commandBuilder.BuildSelect(source ?? discription.Source, discription.Fields);
return(new QueryBuilder <TResult>(connection, builder));
}