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1.拼接字符 sqlserver + select fristName+lastName as fullName from User oracle || select fristName||lastName as fullName from User pgsql || select fristNam 阅读全文
摘要:
1.创建基础类 /// <summary> ///抽象的女朋友 /// </summary> public abstract class AbstractGirlFriend { public int Id { get; set; } public string Name { get; set; } 阅读全文
摘要:
1.定义基础类 public abstract class AbstractAuditor { public string Name { get; set; } public abstract void Audit(ApplyContext context); private AbstractAud 阅读全文