建表sql

-- 删除数据表
DROP TABLE grade ;
DROP TABLE sporter ;
DROP TABLE item ;
PURGE RECYCLEBIN ;
-- 建立表
CREATE TABLE sporter(
    sporterid        NUMBER(4) ,
    name            VARCHAR2(30)    NOT NULL ,
    sex            VARCHAR2(10)    NOT NULL ,
    department        VARCHAR2(30)    NOT NULL ,
    CONSTRAINT pk_sporterid PRIMARY KEY(sporterid) ,
    CONSTRAINT ck_sex CHECK(sex IN ('男' ,'女'))
) ;
CREATE TABLE item(
    itemid            VARCHAR2(4) ,
    itemname        VARCHAR2(30)    NOT NULL ,
    location        VARCHAR2(30)    NOT NULL ,
    CONSTRAINT pk_itemid PRIMARY KEY(itemid)
) ;
CREATE TABLE grade(
    sporterid        NUMBER(4) ,
    itemid            VARCHAR2(4) ,
    mark            NUMBER(1) ,
    CONSTRAINT fk_sporterid FOREIGN KEY(sporterid) REFERENCES sporter(sporterid) ON DELETE CASCADE ,
    CONSTRAINT fk_itemid FOREIGN KEY(itemid) REFERENCES item(itemid) ON DELETE CASCADE ,
    CONSTRAINT ck_mark CHECK (mark IN (6,4,2,0))
) ;
-- 测试数据
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1001,'李明','男','计算机系') ;
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1002,'张三','男','数学系') ;
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1003,'李四','男','计算机系') ;
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1004,'王二','男','物理系') ;
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1005,'李娜','女','心理系') ;
INSERT INTO sporter(sporterid,name,sex,department) VALUES (1006,'孙丽','女','数学系') ;

INSERT INTO item(itemid,itemname,location) VALUES ('x001','男子五公里','一操场') ;
INSERT INTO item(itemid,itemname,location) VALUES ('x002','男子标枪','一操场') ;
INSERT INTO item(itemid,itemname,location) VALUES ('x003','男子跳远','二操场') ;
INSERT INTO item(itemid,itemname,location) VALUES ('x004','女子跳高','二操场') ;
INSERT INTO item(itemid,itemname,location) VALUES ('x005','女子三公里','三操场') ;

INSERT INTO grade(sporterid,itemid,mark) VALUES (1001,  'x001', 6) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1002,  'x001', 4) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1003,  'x001', 2) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1004,  'x001', 0) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1001,  'x003', 4) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1002,  'x003', 6) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1004,  'x003', 2) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1003,  'x003', 0) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1005,  'x004', 6) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1006,  'x004', 4) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1001,  'x004', 2) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1002,  'x004', 0) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1003,  'x002', 6) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1005,  'x002', 4) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1006,  'x002', 2) ;
INSERT INTO grade(sporterid,itemid,mark) VALUES (1001,  'x002', 0) ;
-- 事务提交
COMMIT ;