/// <summary> /// 获取列名 /// </summary> /// <typeparam name="TEntity">实体类型</typeparam> /// <param name="columns">列名表达式</param> /// <param name="propertyAsAlias">是否将属性名映射为列别名</param> public string GetColumns <TEntity>(Expression <Func <TEntity, object[]> > columns, bool propertyAsAlias) => Lambdas.GetLastNames(columns).Select(column => $"t_{column}").Join();