错误地与组相关的数据仓库错误

编程问答 2022-05-28

问题描述

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个维度字段的主表是事实表。此外，事实还需要多2个字段：每个客户的目的地总数+总价格。 问题是在我将数据插入事实表后，按行分组失败了，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');
INSERT INTO CLIENTS_TEST VALUES (5,'name5','adr5','Timis');
INSERT INTO CLIENTS_TEST VALUES (6,'name6','adr6','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','dest5',4000);
INSERT INTO VACATIONS_TEST VALUES (13,6,TO_DATE('8/05/2020','dest3',3000);
INSERT INTO VACATIONS_TEST VALUES (14,1,TO_DATE('10/05/2020','dest4',3000);
INSERT INTO VACATIONS_TEST VALUES (15,TO_DATE('12/05/2020','dest1',2000);
INSERT INTO VACATIONS_TEST VALUES (16,5,TO_DATE('15/05/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (17,TO_DATE('18/05/2020',5000);
INSERT INTO VACATIONS_TEST VALUES (18,TO_DATE('21/05/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (19,TO_DATE('24/05/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (20,4,TO_DATE('27/05/2020',6000);
INSERT INTO VACATIONS_TEST VALUES (21,TO_DATE('3/06/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (22,TO_DATE('6/06/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (23,TO_DATE('7/06/2020',6000);
INSERT INTO VACATIONS_TEST VALUES (24,TO_DATE('9/06/2020',5000);
INSERT INTO VACATIONS_TEST VALUES (25,TO_DATE('11/06/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (26,TO_DATE('14/06/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (27,TO_DATE('17/06/2020',6000);
INSERT INTO VACATIONS_TEST VALUES (28,TO_DATE('19/06/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (29,TO_DATE('21/06/2020',2000);
INSERT INTO VACATIONS_TEST VALUES (30,TO_DATE('27/06/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (31,TO_DATE('1/07/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (32,TO_DATE('4/07/2020',2000);
INSERT INTO VACATIONS_TEST VALUES (33,TO_DATE('6/07/2020',2000);
INSERT INTO VACATIONS_TEST VALUES (34,TO_DATE('10/07/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (35,TO_DATE('12/07/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (36,TO_DATE('15/07/2020',3000);
INSERT INTO VACATIONS_TEST VALUES (37,TO_DATE('22/07/2020',2000);
INSERT INTO VACATIONS_TEST VALUES (38,TO_DATE('24/07/2020',4000);
INSERT INTO VACATIONS_TEST VALUES (39,TO_DATE('27/07/2020',2000);
INSERT INTO VACATIONS_TEST VALUES (40,TO_DATE('29/07/2020',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

解决方法

不是 GROUP BY 失败，而是主键被违反的事实：

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,total_price)
*
ERROR at line 1:
ORA-00001: unique constraint (SCOTT.SYS_C007160) violated


SQL>

怎么办？

  • 如果 fact 表的主键设置不正确，请更改它
  • 如果主键正常但数据违反它，则确保查询返回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？我没有，但你应该。
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