CATEGORII DOCUMENTE |
Interogari - exercitii
Partea I: functii, operatori, jonctiuni
In aceste exercitii utilizati tabelele My_emp, My_dept si My_jobs create pe baza tabelelor Employees, Departmens si Jobs din schema (user-ul) HR astfel:
DROP TABLE MY_EMP;
DROP TABLE MY_DEPT;
DROP TABLE MY_JOBS;
CREATE TABLE MY_EMP AS SELECT * FROM HR.EMPLOYEES;
CREATE TABLE MY_DEPT AS SELECT * FROM HR.DEPARTMENTS;
CREATE TABLE MY_JOBS AS SELECT * FROM HR.JOBS;
Strucura acestor tabele este prezentata in tabelele urmatoare:
MY_EMP:
Name |
Null? |
Type |
EMPLOYEE_ID |
NUMBER(6) |
|
FIRST_NAME |
VARCHAR2(20) |
|
LAST_NAME |
NOT NULL |
VARCHAR2(25) |
|
NOT NULL |
VARCHAR2(25) |
PHONE_NUMBER |
VARCHAR2(20) |
|
HIRE_DATE |
NOT NULL |
DATE |
JOB_ID |
NOT NULL |
VARCHAR2(10) |
SALARY |
NUMBER(8,2) |
|
COMMISSION_PCT |
NUMBER(2,2) |
|
MANAGER_ID |
NUMBER(6) |
|
DEPARTMENT_ID |
NUMBER(4) |
MY_DEPT:
Name |
Null? |
Type |
DEPARTMENT_ID |
NUMBER(4) |
|
DEPARTMENT_NAME |
NOT NULL |
VARCHAR2(30) |
MANAGER_ID |
NUMBER(6) |
|
LOCATION_ID |
NUMBER(4) |
MY_JOBS:
Name |
Null? |
Type |
JOB_ID |
VARCHAR2(10) |
|
JOB_TITLE |
NOT NULL |
VARCHAR2(35) |
MIN_SALARY |
NUMBER(6) |
|
MAX_SALARY |
NUMBER(6) |
Exercitii:
Politica de confidentialitate | Termeni si conditii de utilizare |
Vizualizari: 2017
Importanta:
Termeni si conditii de utilizare | Contact
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