Question

大家好，我正在使用Oracle 10g使用Oracle数据库。我有2张桌子汽车和拥有。

jdbcTemplate.query( 
         "select id,image,mimetype from images",
         (rs,rowNum)-> {
             createThumbnail(new ImageHolder(
                rs.getInt("id"),
                rs.getBytes("image"),
                rs.getString("mimetype") ));
         })
)

我插入了这些值

Create Table Car(
"license" varchar(255) not null primary key,
"year" varchar(255),
"model" varchar(255)
);

这是Owns表

insert into Car values('12-3000', '2012', 'Axio');
insert into Car values('11-3000', '2008', 'Corolla');
insert into Car values('12-4000', '2013', 'Axio');
insert into Car values('12-5000', '2013', 'Premio');
insert into Car values('11-5000', '2010', 'Nano');
insert into Car values('11-6000', '2011', 'Alto');
insert into Car values('12-6000', '2015', 'Nano Twist');

我也插入了这些值

Create Table Owns (
"nid" varchar(20) not null,
"license" varchar(255),
primary key("nid", "license")
);

现在我需要找到那些拥有“Axio”模特的人的国家身份证（nid）。怎么写那个查询？可能是这种......

insert into Owns values('123451', '11-3000');
insert into Owns values('123452', '12-4000');
insert into Owns values('123453', '12-5000');
insert into Owns values('123454', '11-5000');
insert into Owns values('123455', '11-6000');
insert into Owns values('123456', '12-6000');
insert into Owns values('123457', '12-3000');

先谢谢。

Answer 1

试试这个，

从拥有“许可证”IN的Owns中选择“nid”（从Car中选择“牌照”，其中“model”='Axio'）;

您也可以尝试使用连接...

如何从值取决于另一个表的表中获取值？

1 个答案: