—Individual Research Project—1. Background InformationBank X has previously sold products to its customers via rather broad sales campaigns wherecusto ...
分类:
其他好文 时间:
2019-12-03 19:39:40
阅读次数:
107
/// <summary> /// 调用接口自动签到,并返回签到结果 /// </summary> /// <returns></returns> [Route("index")] [APIFilter(true, true)] public APIResult<object> index() { ... ...
分类:
微信 时间:
2019-11-28 19:02:38
阅读次数:
240
约束 public abstract class BaseModel { public int Id { get; set; } } 连接字符串 public static readonly string Customers = ConfigurationManager.ConnectionStri ...
分类:
数据库 时间:
2019-11-26 19:43:32
阅读次数:
68
“SmartX has successfully penetrated into customers that heavily rely on IT for business and operation, including all kinds of financial service instit ...
分类:
其他好文 时间:
2019-11-21 09:54:55
阅读次数:
78
(1) 内连接 关键字:inner join on select * from a_table inner join b_table on a_table.a_id = b_table.b_id; /* 执行结果如下: | a_id | a_name | a_part | b_id | b_name ...
分类:
数据库 时间:
2019-11-16 12:32:07
阅读次数:
80
URL:https://www.cnblogs.com/qlqwjy/p/8598091.html 比如在Northwind数据库中有一个查询为 SELECT c.CustomerId,CompanyName FROM Customers c WHERE EXISTS( SELECT OrderID ...
分类:
数据库 时间:
2019-11-14 13:46:41
阅读次数:
84
Choosetwo.ExaminethisSQLstatement:UPDATEordersoSETcustomer_name=(SELECTcust_last_nameFROMcustomersWHEREcustomer_id=o.customer_id);Whichtwoaretrue?A)ThesubqueryisexecutedbeforetheUPDATEstatementisexecu
分类:
其他好文 时间:
2019-10-23 16:30:16
阅读次数:
87
在编写EF+Linq的过程中,可能会遇到“在LINQtoEntities查询中无法构造实体或复杂类型”的问题。解决方法:从原有类型中继承一个子类,然后创建子类实例下面是例子:privatestaticvoidMain(string[]args){Booleans=false;using(Northwinddbo=newNorthwind()){IQueryable<Customers>
分类:
其他好文 时间:
2019-10-20 14:38:58
阅读次数:
101
比如在Northwind数据库中有一个查询为SELECT c.CustomerId,CompanyName FROM Customers cWHERE EXISTS(SELECT OrderID FROM Orders o WHERE o.CustomerID=c.CustomerID) 这里面的E ...
分类:
数据库 时间:
2019-10-16 21:28:57
阅读次数:
123
choosetwoTheCUSTOMERStablehasaCUST_CREDT_LIMITcolumnofdatetypenumber.Whichtwoqueriesexecutesuccesstully?A)SELECTTO_CHAR(NVL(cust_credit_limit*.15,‘NotAvailable‘))FROMcustomers;B)SELECTNVL2(cus
分类:
其他好文 时间:
2019-10-15 12:56:36
阅读次数:
80