/// <summary>
 /// 初始化新的Sql复杂函数
 /// </summary>
 /// <param name="basicFunc">Sql基础函数</param>
 /// <param name="leftMethod">左边增加的内容</param>
 /// <param name="rightMethod">右边增加的内容</param>
 public SqlComplexFunction(AbstractSqlBasicFunction basicFunc, String leftMethod, String rightMethod)
 {
     this._basicFunc   = basicFunc;
     this._leftMethod  = leftMethod;
     this._rightMethod = rightMethod;
 }
 /// <summary>
 /// 初始化新的Sql复杂函数
 /// </summary>
 /// <param name="basicFunc">Sql基础函数</param>
 /// <param name="leftMethod">左边增加的内容</param>
 /// <param name="rightMethod">右边增加的内容</param>
 public SqlComplexFunction(AbstractSqlBasicFunction basicFunc, String leftMethod, String rightMethod)
 {
     this._basicFunc = basicFunc;
     this._leftMethod = leftMethod;
     this._rightMethod = rightMethod;
 }