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大家好我正在使用Oracle數據庫使用Oracle 10g。我有2個表 汽車和擁有。如何從值取決於另一個表的表中獲取值?
Create Table Car(
"license" varchar(255) not null primary key,
"year" varchar(255),
"model" varchar(255)
);
我插入這些值
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');
這是擁有表
Create Table Owns (
"nid" varchar(20) not null,
"license" varchar(255),
primary key("nid", "license")
);
而且我插入這些值
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');
現在我需要找到身份證( nid)那些擁有「Axio」的人楷模。 如何編寫該查詢? 它可能是這種...
select "nid" from Owns where "license" = (select "license" from Car where "model" = 'Axio');
在此先感謝。
非常感謝你,它的工作。 –
'選擇nn從所有權左加入車上Owns.license = Car.license其中model ='Axio';' - 這一個也適用。檢查查詢速度並使用最好的一個。 – Naga