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각 지점에서 가장 최근에 고용 된 직원의 정보가 포함 된보기를 만들려고했습니다. 하지만 나는 그것에 성공하지 못했습니다. 누구든지 나를 올바른 길로 인도 할 수 있습니까?보기를 만드는 방법
CREATE TABLE BRANCH(
BRANCH_ID NUMBER(8) PRIMARY KEY,
BRANCH_NAME VARCHAR2(100) NOT NULL,
SCHEDULE_LINK_NUM NUMBER(8),
MAIN_BRANCH_ID number(8),
BRANCH_MGR_ID NUMBER(8),
BRANCH_OPEN_DATE DATE,
EMAIL VARCHAR2(50),
URL VARCHAR2(50)
);
CREATE TABLE EMPLOYEE(
EMPLOYEE_ID NUMBER(8) PRIMARY KEY,
FIRST_NAME VARCHAR2(50),
LAST_NAME VARCHAR2(50),
MIDDLE_NAME VARCHAR2(50),
GENDER CHAR(1),
SSN NUMBER(9) NOT NULL,
DOB DATE,
MARITAL_STATUS VARCHAR2(30),
SPOUSE_NAME VARCHAR2(50),
HOME_PHONE NUMBER(10),
CELL_PHONE NUMBER(10),
OFFICE_PH_EXTN NUMBER(6),
EMPLOYEE_TYPE VARCHAR2(40),
SALARY NUMBER(10,2),
TAX_DEDUCTION NUMBER(10,2),
BRANCH_ID NUMBER(8),
MGR_ID NUMBER(8),
CONSTRAINT EMP_BRANCH_FKEY FOREIGN KEY(BRANCH_ID) REFERENCES BRANCH(BRANCH_ID),
CONSTRAINT EMP_EMPTYPE_CHECK CHECK(EMPLOYEE_TYPE IN ('MANAGER', 'MECHANIC', 'SECRETARY', 'SALES PERSON')),
CONSTRAINT EMP_MARITSTATUS_CHECK CHECK(MARITAL_STATUS IN ('SINGLE', 'MARRIED', 'DIVORCED'))
);
CREATE TABLE EMP_WORK_HISTORY(
BRANCH_EMP_NUM NUMBER(8) PRIMARY KEY,
BRANCH_ID NUMBER(8),
EMPLOYEE_ID NUMBER(8),
JOIN_DATE DATE NOT NULL,
RELIEVING_DATE DATE,
EMPLOYEE_TYPE VARCHAR2(40),
DESCRIPTION VARCHAR2(200),
CONSTRAINT BRANCH_WRKHIS_BID_FKEY FOREIGN KEY(BRANCH_ID) REFERENCES BRANCH(BRANCH_ID),
CONSTRAINT BRANCH_WRKHIS_EID_FKEY FOREIGN KEY(EMPLOYEE_ID) REFERENCES EMPLOYEE(EMPLOYEE_ID),
CONSTRAINT EMP_WRKHIS_EMPTYPE_CHECK CHECK(EMPLOYEE_TYPE IN ('MANAGER', 'MECHANIC', 'SECRETARY', 'SALES PERSON'))
);
내가보기 아래와 같이 작성했습니다 :
CREATE VIEW LAST_EMPLOYEE_BRANCH AS
WITH LAST_EMP_BRANCH AS
(SELECT MAX(EWH.JOIN_DATE) AS LAST_HIRED_DATE, EWH.BRANCH_ID
FROM EMP_WORK_HISTORY EWH GROUP BY EWH.BRANCH_ID)
SELECT E.FIRST_NAME || E.LAST_NAME AS EMPLOYEE_NAME,
B.BRANCH_NAME, LEB.LAST_HIRED_DATE, E.SALARY,
EXTRACT(YEAR FROM NUMTOYMINTERVAL(MONTHS_BETWEEN(TRUNC(SYSDATE),E.DOB),'MONTH')) AS AGE
FROM EMPLOYEE E, BRANCH B, LAST_EMP_BRANCH LEB
WHERE E.BRANCH_ID = B.BRANCH_ID
AND LEB.BRANCH_ID = E.BRANCH_ID;
위의보기를 실행하여 내가 모든 직원의 기록을 얻고있다. 누구든지이 일을 도울 수 있습니까?
"모든 직원 기록 확보 중 _"- 예상되는 결과는 무엇입니까? – mustaccio