所以我有 2 个表:Clients_Test 和 Vacations_Test。我需要创建一个有 2 个维度的仓库:d1_month 和 d2_destination。应该包含这 2 个维度的字段的主表是事实表。事实还需要另外 2 个字段:每个客户的总目的地 + 总价格。问题是在我将数据插入事实表之后,逐行分组分解,我不知道为什么。尝试使用其他字段对它们进行分组,但它仍然让我退缩。
CREATE TABLE CLIENTS_TEST(
IDclient NUMBER(7) PRIMARY KEY,
name_client VARCHAR2(40) ,
adress VARCHAR2(50),
city VARCHAR2(30),
county VARCHAR2(20));
CREATE TABLE VACATIONS_TEST(
number_contract NUMBER(6) PRIMARY KEY,
IDclient NUMBER(7) REFERENCES CLIENTI_TEST(IDclient),
date_contract DATE,
destination VARCHAR2(40),
price NUMBER(10));
INSERT INTO CLIENTS_TEST VALUES (1, 'name1','adr1', 'Timisoara', 'Timis');
INSERT INTO CLIENTS_TEST VALUES (2, 'name2','adr2', 'Arad', 'Arad');
INSERT INTO CLIENTS_TEST VALUES (3, 'name3','adr3', 'Cluj', 'Cluj');
INSERT INTO CLIENTS_TEST VALUES (4, 'name4','adr4', 'Arad', 'Arad');
INSERT INTO CLIENTS_TEST VALUES (5, 'name5','adr5', 'Timisoara', 'Timis');
INSERT INTO CLIENTS_TEST VALUES (6, 'name6','adr6', 'Cluj', 'Cluj');
INSERT INTO VACATIONS_TEST VALUES (11, 2, TO_DATE('2/05/2020','dd/mm/yyyy'), 'dest2', 4000);
INSERT INTO VACATIONS_TEST VALUES (12, 3, TO_DATE('4/05/2020','dd/mm/yyyy'), 'dest5', 4000);
INSERT INTO VACATIONS_TEST VALUES (13, 6, TO_DATE('8/05/2020','dd/mm/yyyy'), 'dest3', 3000);
INSERT INTO VACATIONS_TEST VALUES (14, 1, TO_DATE('10/05/2020','dd/mm/yyyy'), 'dest4', 3000);
INSERT INTO VACATIONS_TEST VALUES (15, 3, TO_DATE('12/05/2020','dd/mm/yyyy'), 'dest1', 2000);
INSERT INTO VACATIONS_TEST VALUES (16, 5, TO_DATE('15/05/2020','dd/mm/yyyy'), 'dest2', 4000);
INSERT INTO VACATIONS_TEST VALUES (17, 2, TO_DATE('18/05/2020','dd/mm/yyyy'), 'dest4', 5000);
INSERT INTO VACATIONS_TEST VALUES (18, 6, TO_DATE('21/05/2020','dd/mm/yyyy'), 'dest5', 3000);
INSERT INTO VACATIONS_TEST VALUES (19, 1, TO_DATE('24/05/2020','dd/mm/yyyy'), 'dest1', 4000);
INSERT INTO VACATIONS_TEST VALUES (20, 4, TO_DATE('27/05/2020','dd/mm/yyyy'), 'dest3', 6000);
INSERT INTO VACATIONS_TEST VALUES (21, 3, TO_DATE('3/06/2020','dd/mm/yyyy'), 'dest5', 4000);
INSERT INTO VACATIONS_TEST VALUES (22, 4, TO_DATE('6/06/2020','dd/mm/yyyy'), 'dest2', 3000);
INSERT INTO VACATIONS_TEST VALUES (23, 6, TO_DATE('7/06/2020','dd/mm/yyyy'), 'dest4', 6000);
INSERT INTO VACATIONS_TEST VALUES (24, 2, TO_DATE('9/06/2020','dd/mm/yyyy'), 'dest5', 5000);
INSERT INTO VACATIONS_TEST VALUES (25, 5, TO_DATE('11/06/2020','dd/mm/yyyy'), 'dest2', 4000);
INSERT INTO VACATIONS_TEST VALUES (26, 3, TO_DATE('14/06/2020','dd/mm/yyyy'), 'dest1', 3000);
INSERT INTO VACATIONS_TEST VALUES (27, 2, TO_DATE('17/06/2020','dd/mm/yyyy'), 'dest4', 6000);
INSERT INTO VACATIONS_TEST VALUES (28, 6, TO_DATE('19/06/2020','dd/mm/yyyy'), 'dest5', 4000);
INSERT INTO VACATIONS_TEST VALUES (29, 1, TO_DATE('21/06/2020','dd/mm/yyyy'), 'dest3', 2000);
INSERT INTO VACATIONS_TEST VALUES (30, 5, TO_DATE('27/06/2020','dd/mm/yyyy'), 'dest4', 3000);
INSERT INTO VACATIONS_TEST VALUES (31, 4, TO_DATE('1/07/2020','dd/mm/yyyy'), 'dest5', 3000);
INSERT INTO VACATIONS_TEST VALUES (32, 3, TO_DATE('4/07/2020','dd/mm/yyyy'), 'dest1', 2000);
INSERT INTO VACATIONS_TEST VALUES (33, 1, TO_DATE('6/07/2020','dd/mm/yyyy'), 'dest3', 2000);
INSERT INTO VACATIONS_TEST VALUES (34, 4, TO_DATE('10/07/2020','dd/mm/yyyy'), 'dest1', 3000);
INSERT INTO VACATIONS_TEST VALUES (35, 6, TO_DATE('12/07/2020','dd/mm/yyyy'), 'dest2', 4000);
INSERT INTO VACATIONS_TEST VALUES (36, 5, TO_DATE('15/07/2020','dd/mm/yyyy'), 'dest3', 3000);
INSERT INTO VACATIONS_TEST VALUES (37, 4, TO_DATE('22/07/2020','dd/mm/yyyy'), 'dest4', 2000);
INSERT INTO VACATIONS_TEST VALUES (38, 2, TO_DATE('24/07/2020','dd/mm/yyyy'), 'dest1', 4000);
INSERT INTO VACATIONS_TEST VALUES (39, 1, TO_DATE('27/07/2020','dd/mm/yyyy'), 'dest5', 2000);
INSERT INTO VACATIONS_TEST VALUES (40, 5, TO_DATE('29/07/2020','dd/mm/yyyy'), 'dest4', 4000);
Create table d1_month (month_contract number(2) primary key);
Insert into d1_month select distinct extract(month from data_contract) from vacations_test;
Create table d2_destination(destination varchar2(40) Primary key);
insert into d2_destination select distinct destination from vacations_test;
Create table fact (month_contract number(2) references d1_month(month_contract),destination varchar2(40) references d2_destination(destination),
nr_vacations number(10),total_price number(20),Primary key(nr_vacations,total_price));
Insert into fact
select extract(month from VACATIONS_TEST.date_contract), VACATIONS_TEST.destination,count(VACATIONS_TEST.IDclient),
sum(VACATIONS_TEST.price)
from vacations_test, clients_test
WHERE VACATIONS_TEST.IDclient=CLIENTS_TEST.IDclient
group by VACATIONS_TEST.destination, extract(month from VACATIONS_TEST.date_contract); // error