发布时间 : 星期三 文章数据库系统及应用(戴小平)课后答案更新完毕开始阅读6bfcb5912a160b4e767f5acfa1c7aa00b42a9dd1
程号JNO； SELECT JNO FROM J
WHERE NOT EXISTS (SELECT * FROM S,P,SPJ WHERE = AND = AND = AND = ‘红色’ AND = ‘天津’ ); 或
SELECT DISTINCT JNO FROM SPJ
WHERE JNO NOT IN (SELECT * FROM S,P,SPJ WHERE = AND = AND = ‘红色’ AND = ‘天津’
);
(4) 检索出各个工程项目使用的零件数量。 SELECT JNO, SUM(QTY) FROM SPJ GROUP BY JNO;
(5) 检索上海厂商供应的所有零件代码，并且按照重量从大到小显示出来。 SELECT FROM P,SPJ,S WHERE = AND = AND = ‘上海’ ORDER BY WEIGHT DESC; 或
SELECT DISTINCT PNO FROM SPJ,S WHERE =
AND = ‘上海’ ORDER BY WEIGHT DESC;
(6) 检索出供应商姓名头两个字为“浦东”的供应商的信息。 SELECT * FROM S
WHERE SNAME LIKE ‘浦东%’ ;
(7) 把全部红色零件的颜色改成蓝色。 UPDATE P
SET COLOR = ‘蓝色’ WHERE COLOR = ‘红色’;
(8) 从零件表中删除零件号是P2的记录。 DELETE FROM P
WHERE PNO = ‘P2’;
(9) 请将(S2，J6，P4，200)插入供应情况关系。 INSERT INTO SPJ
VALUES(‘S2’,’J6’,’P4’,200);
(10) 授予用户“王明”对零件表有INSERT的权限，并允许该权限传播。
GRANT INSERT ON P TO ‘王明’ WITH GRANT OPTION;
第 4 章 Oracle数据库 第 5 章 ORACLE存储过程与触发器