如何将数据从其他2个表插入1个表中？

Question

我的第一张表将是我要插入的具有状态栏，目的地，渡轮的端口。我的第二张表将是我要插入的具有用户名栏的用户。

我将如何使用插入语句并将所有这些列插入预订表中？

   private static final String DATABASE_CREATE =
        "create table user (_id integer primary key autoincrement, "
        + "Username text not null, Password text not null,"
        + "LastName text not null, FirstName text not null);";

    private static final String DATABASE_CREATE_2 =
        "create table port (_id integer primary key autoincrement, "
        + "status text null, destination text null,"
        + "arrival text null, ferry text null);";

    private static final String DATABASE_CREATE_3 =
        "create table booking (_id integer primary key autoincrement, "
        + "ArrivalTime text null, Destination text null,"
        + "user text null, ferry text null);";

谢谢。

Answer 1

我在Oracle中尝试过，它应该可以工作：

INSERT INTO booking (ArrivalTime, Destination, user, ferry) 
SELECT port.arrival, port.destination, user.Username, port.ferry 
FROM port, user WHERE port._id Is Not Null 

请注意，您需要始终为true的WHERE子句以添加所有可能的条目

Answer 2

SQL Server 2008年：-

insert into booking 
select p.arravialtime,p.destination,u.username,p.ferry
from port p
(most sutaible join according to your requirenment)
 user u
  where (your condition)