/// <summary>
/// 执行入口，解析表达式生成SQL语句，并返回SQL数据源数据
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public object Execute(Expression expression)
{
var translator = new SqlTranslate();
var trans = translator.Translate(expression);
//var elist= SqlMapper.Query(_conn, trans.Item1, trans.Item2);
//return elist;
System.Diagnostics.Debug.WriteLine($"sql:{trans.Item1}");
return(null);
}
/// <summary>
/// 执行入口，解析表达式生成SQL语句，并返回SQL数据源一行数据
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="expression"></param>
/// <returns></returns>
public TResult Execute <TResult>(Expression expression)
{
var translator = new SqlTranslate();
var trans = translator.Translate(expression);
//return SqlMapper.Query<TResult>(_conn, trans.Item1, trans.Item2).FirstOrDefault();
System.Diagnostics.Debug.WriteLine($"sql:{trans.Item1}");
return(default(TResult));
//return default(TResult);
//return (TResult)this.Execute(expression);
}