Question

我有多个可能的数据表（为支持并行处理而创建）以搜索以查找匹配项，另一个表包含要排除的条目。表格定义如下，以及一些示例数据：

CREATE TABLE HOUSEHOLD_1
( 
    PERSON_ID       NUMBER NOT NULL ENABLE,
    HOUSEHOLD_HEAD_ID   NUMBER NOT NULL ENABLE,
    RELATIONSHIP        CHAR (1) NOT NULL ENABLE,

    CONSTRAINT HOUSEHOLD_1_PK PRIMARY KEY (PERSON_ID, HOUSEHOLD_HEAD_ID, RELATIONSHIP) ENABLE
);

INSERT INTO HOUSEHOLD_1 VALUES (1, 1, 'H');
INSERT INTO HOUSEHOLD_1 VALUES (2, 1, 'S');
INSERT INTO HOUSEHOLD_1 VALUES (3, 1, 'D');

CREATE TABLE HOUSEHOLD_2
( 
    PERSON_ID       NUMBER NOT NULL ENABLE,
    HOUSEHOLD_HEAD_ID   NUMBER NOT NULL ENABLE,
    RELATIONSHIP        CHAR (1) NOT NULL ENABLE,

    CONSTRAINT HOUSEHOLD_2_PK PRIMARY KEY (PERSON_ID, HOUSEHOLD_HEAD_ID, RELATIONSHIP) ENABLE
);

INSERT INTO HOUSEHOLD_2 VALUES (4, 4, 'H');
INSERT INTO HOUSEHOLD_2 VALUES (5, 4, 'S');
INSERT INTO HOUSEHOLD_2 VALUES (6, 4, 'D');

CREATE TABLE HOUSEHOLD_3
( 
    PERSON_ID       NUMBER NOT NULL ENABLE,
    HOUSEHOLD_HEAD_ID   NUMBER NOT NULL ENABLE,
    RELATIONSHIP        CHAR (1) NOT NULL ENABLE,

    CONSTRAINT HOUSEHOLD_3_PK PRIMARY KEY (PERSON_ID, HOUSEHOLD_HEAD_ID, RELATIONSHIP) ENABLE
);

INSERT INTO HOUSEHOLD_3 VALUES (7, 7, 'H');
INSERT INTO HOUSEHOLD_3 VALUES (8, 7, 'S');
INSERT INTO HOUSEHOLD_3 VALUES (9, 7, 'D');

CREATE TABLE HOUSEHOLD_DELETIONS
( 
    PERSON_ID       NUMBER NOT NULL ENABLE,
    HOUSEHOLD_HEAD_ID   NUMBER NOT NULL ENABLE,
    RELATIONSHIP        CHAR (1) NOT NULL ENABLE,

    CONSTRAINT HOUSEHOLD_DELETIONS_PK PRIMARY KEY (PERSON_ID, HOUSEHOLD_HEAD_ID, RELATIONSHIP) ENABLE
);

INSERT INTO HOUSEHOLD_DELETIONS VALUES (9, 7, 'D');

CREATE TABLE CLOSED_ACCOUNTS
( 
    PERSON_ID       NUMBER NOT NULL ENABLE,

    CONSTRAINT CLOSED_ACCOUNTS_PK PRIMARY KEY (PERSON_ID) ENABLE
);

INSERT INTO CLOSED_ACCOUNTS VALUES (3);
INSERT INTO CLOSED_ACCOUNTS VALUES (6);
INSERT INTO CLOSED_ACCOUNTS VALUES (9);
INSERT INTO CLOSED_ACCOUNTS VALUES (10);

我需要在CLOSED_ACCOUNTS中找到PUSE_ID值，这些值在HOUSEHOLD_1，HOUSEHOLD_2或HOUSEHOLD_3中具有匹配的PERSON_ID，但在HOUSEHOLD_DELETIONS中没有PERSON_ID。根据上面的数据，我应该只找到PERSON_ID值3和6.我已经尝试过我知道的SQL技巧，但我没有成功，所以任何帮助都会受到赞赏。提前谢谢。

Answer 1

SET操作应该对您有用：

SQL> select person_id from CLOSED_ACCOUNTS
  2  intersect (
  3  select person_id from HOUSEHOLD_1
  4  union
  5  select person_id from HOUSEHOLD_2
  6  union
  7  select person_id from HOUSEHOLD_3
  8  )
  9  minus
 10  select person_id from HOUSEHOLD_DELETIONS
 11  /

 PERSON_ID                                                                      
----------                                                                      
         3                                                                      
         6

具有多个可能表和排除表的SQL查询

1 个答案: