一般的な従業員情報を持つ従業員テーブルがあります。ユーザー情報を含む別の User テーブル。ユーザーは従業員を作成できます。
ユーザーが従業員を作成するとき、ユーザーは部門、製品、サブ製品、および地域を従業員に割り当てます。
ユーザー自身が、特定の部門、製品、サブ製品、および地域にアクセスできます。
たとえば、ユーザー A は部門 D1、製品 P1 (地域 = アジア、アメリカ) 、P2 (地域 = アジア)、P3 (地域 = アジア、アメリカ) にアクセスできます。
Division は Product の親です。各部門は多くの製品を持つことができます。
ユーザー A が製品 P1 (地域 = アジア、アメリカ) にアクセスできると言うとき、それはユーザー A が製品 = P1 および地域 = アジアまたはアメリカで従業員を追加できることを意味します。
彼は、製品 P1 またはその他の製品自体のために従業員を他の地域に追加することはできません。
ユーザー A がデータベースに 500 人の従業員を追加したと仮定すると、別のユーザー B は別の従業員を 500 人追加した、というようになります。
アクセスできる従業員を取得するための効率的なクエリを作成するにはどうすればよいですか?
私と同じアクセス権を持つ別のユーザーが従業員を追加できる可能性があり、それらの従業員も表示できるはずです。
以下は私が持っているdbスキーマです。
--------------------------------------------------------
-- DDL for Table BI_DIVISION
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_DIVISION"
( "DIVISION_ID" NUMBER(*,0) NOT NULL
"DIVISION_NAME" VARCHAR2(4000)
) ;
--------------------------------------------------------
-- DDL for Table BI_PRODUCT
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_PRODUCT"
( "PRODUCT_ID" NUMBER(*,0) NOT NULL ,
"PRODUCT_NAME" VARCHAR2(4000),
"DIVISION_ID" NUMBER(*,0)
) ;
--------------------------------------------------------
-- DDL for Table BI_SUB_PRODUCT
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_SUB_PRODUCT"
( "SUB_PRODUCT_ID" NUMBER(*,0) NOT NULL,
"SUB_PRODUCT_NAME" VARCHAR2(4000),
"PRODUCT_ID" NUMBER(*,0),
) ;
--------------------------------------------------------
-- DDL for Table BI_REGION
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_REGION"
( "REGION_ID" NUMBER(*,0) NOT NULL,
"REGION_NAME" VARCHAR2(4000) NOT NULL ENABLE
) ;
--------------------------------------------------------
-- DDL for Table BI_EMPLOYEE
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_EMPLOYEE"
( "EMP_ID" NUMBER(*,0) NOT NULL ,
"DIVISION_ID" NUMBER(*,0),
"PRODUCT_ID" NUMBER(*,0),
"SUB_PRODUCT_ID" NUMBER(*,0),
"REGION_ID" NUMBER(*,0) ,
"CONFIDENTIAL" VARCHAR2(1) DEFAULT 'Y'
);
--------------------------------------------------------
-- DDL for Table BI_USER
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_USER"
( "USER_ID" NUMBER(*,0) NOT NULL,
"FIRSTNAME" VARCHAR2(4000),
"LASTNAME" VARCHAR2(4000)
) ;
--------------------------------------------------------
-- DDL for Table BI_USER_ACCESS
--------------------------------------------------------
CREATE TABLE "HEADCOUNT_BI"."BI_USER_ACCESS"
( "USER_ACCESS_ID" NUMBER(*,0) NOT NULL,
"USER_ID" NUMBER(*,0),
"DIVISION_ID" NUMBER(*,0),
"PRODUCT_ID" NUMBER(*,0),
"SUB_PRODUCT_ID" NUMBER(*,0),
"REGION_ID" NUMBER(*,0),
"ACCESS_LEVEL" NUMBER(*,0),
"CONFIDENTIAL" VARCHAR2(1) DEFAULT 'Y'
) ;
Insert into BI_DIVISION (DIVISION_ID,DIVISION_NAME) values (1,'DIVISION 1');
Insert into BI_DIVISION (DIVISION_ID,DIVISION_NAME) values (2,'DIVISION 2');
Insert into BI_PRODUCT (PRODUCT_NAME,DIVISION_ID,PRODUCT_ID) values ('PRODUCT 1',1,1);
Insert into BI_PRODUCT (PRODUCT_NAME,DIVISION_ID,PRODUCT_ID) values ('PRODUCT 2',1,2);
Insert into BI_PRODUCT (PRODUCT_NAME,DIVISION_ID,PRODUCT_ID) values ('PRODUCT 3',2,3);
Insert into BI_PRODUCT (PRODUCT_NAME,DIVISION_ID,PRODUCT_ID) values ('PRODUCT 4',2,4);
Insert into BI_SUB_PRODUCT (SUB_PRODUCT_ID,SUB_PRODUCT_NAME,PRODUCT_ID) values (1,'SUB PRODUCT 1', 1);
Insert into BI_SUB_PRODUCT (SUB_PRODUCT_ID,SUB_PRODUCT_NAME,PRODUCT_ID) values (2,'SUB PRODUCT 2', 1);
Insert into BI_SUB_PRODUCT (SUB_PRODUCT_ID,SUB_PRODUCT_NAME,PRODUCT_ID) values (3,'SUB PRODUCT 3', 2);
Insert into BI_SUB_PRODUCT (SUB_PRODUCT_ID,SUB_PRODUCT_NAME,PRODUCT_ID) values (4,'SUB PRODUCT 4', 2);
Insert into BI_SUB_PRODUCT (SUB_PRODUCT_ID,SUB_PRODUCT_NAME,PRODUCT_ID) values (5,'SUB PRODUCT 5', 3);
Insert into BI_REGION (REGION_ID,REGION_NAME) values (1,'Americas');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (2,'Asia');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (3,'Germany');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (4,'Japan');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (5,'Pacific');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (6,'ROE');
Insert into BI_REGION (REGION_ID,REGION_NAME) values (7,'United Kingdom');
Insert into BI_USER (USER_ID,FIRSTNAME,LASTNAME) values (1,'Adam,'Smith);
Insert into BI_USER (USER_ID,FIRSTNAME,LASTNAME) values (2,'Steve','Jones');
-- user with user id = 1 has access to division 1 , product 1 , sub product 1 in regons americas, asia, germany with ACCESS_LEVEL = write access (2) and also access to confidential data
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,1,1,1,2,'Y');
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,1,1,2,2,'Y');
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,1,1,3,2,'Y');
-- user with user id = 1 has access to division 1 , product 2 , sub product 4 in regons americas, asia, germany with ACCESS_LEVEL = write access (2) and also NO access to confidential data
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,2,4,1,2,'N');
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,2,4,2,2,'N');
Insert into BI_USER_ACCESS (USER_ACCESS_ID,USER_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,ACCESS_LEVEL, CONFIDENTIAL) values (1,1,1,2,4,3,2,'N');
-- employees in division 1 , product 1, sub product 1 and region americas and not confi.
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (1,'1','1','1',1,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (2,'1','1','1',1,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (3,'1','1','1',2,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (4,'1','1','1',2,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (5,'1','1','1',7,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (11,'1','1','2',1,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (12,'1','1','2',2,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (13,'1','1','2',3,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (14,'1','1','2',2,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (15,'1','1','2',3,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (111,'2','3','5',1,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (112,'2','3','5',2,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (113,'2','3','5',3,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (114,'2','3','5',4,'N');
Insert into BI_EMPLOYEE (EMP_ID,DIVISION_ID,PRODUCT_ID,SUB_PRODUCT_ID,REGION_ID,CONFIDENTIAL) values (115,'2','3','5',5,'N');
以下はこれまでに書いたクエリですが、それが最善の方法であるかどうかはわかりません。
SELECT
*
FROM
BI_EMPLOYEE e
JOIN BI_USER_ACCESS uad On uad.DIVISION_ID = e.DIVISION_ID and uad.USER_ID = 137
JOIN BI_USER_ACCESS uap On uap.PRODUCT_ID = e.PRODUCT_ID and uap.USER_ID = 137
JOIN BI_USER_ACCESS uasp On uasp.SUB_PRODUCT_ID = e.SUB_PRODUCT_ID and uasp.USER_ID = 137
JOIN BI_USER_ACCESS uar On uar.REGION_ID = e.REGION_ID and uar.SUB_PRODUCT_ID = e.SUB_PRODUCT_ID and uar.USER_ID = 137
編集1:
db スクリプトといくつかのサンプル データを使用して質問を更新しました。