错误地与组相关的数据仓库错误

Question

所以我有 2 个 tables:Clients_Test 和 Vacations_Test.I 需要创建一个具有 2 个维度的仓库： d1_month 和 d2_destination.The 主要 table 应该包含这两个维度的字段是事实 table.Also 这个事实需要再有 2 个 fields:the 每个的总目的地客户+总价。问题是在我将数据插入事实 table 之后，按行分组出现故障，我不知道 why.Tried 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

Answer 1

不是GROUP BY失败，而是违反了主键：

SQL> insert into fact (month_contract, destination, nr_vacations, total_price)
  2  select
  3    extract(month from vacations_test.date_contract),
  4    vacations_test.destination,
  5    count(vacations_test.idclient),
  6    sum(vacations_test.price)
  7  from vacations_test, clients_test
  8  where vacations_test.idclient = clients_test.idclient
  9  group by vacations_test.destination,
 10  extract(month from vacations_test.date_contract)
 11  ;
insert into fact (month_contract, destination, nr_vacations, total_price)
*
ERROR at line 1:
ORA-00001: unique constraint (SCOTT.SYS_C007160) violated


SQL>

怎么办？

如果fact table的主键设置不正确，请更改它
如果主键没问题但数据违反了它，那么请确保查询 returns 两个主键列的唯一组合：[nr_vacations, total_price]
- 怎么样？也许通过在查询中包含 where 子句，或者......谁知道呢？我不知道，但你应该。

错误地与组相关的数据仓库错误

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