Select Department Name from Departments
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Sql workshop – object browser –DEPARTMENTS-
Column Name Data Type Nullable Default Primary Key
DEPARTMENT_ID NUMBER(4,0) No - 1
DEPARTMENT_NAME VARCHAR2(30) No - -
MANAGER_ID NUMBER(6,0) Yes - -
LOCATION_ID NUMBER(4,0) Yes - -
Data
EDIT DEPARTMENT_ID DEPARTMENT_NAME MANAGER_ID LOCATION_ID
10 Administration 200 1700
20 Marketing 201 1800
50 Shipping 124 1500
60 IT 103 1400
80 Sales 149 2500
90 Executive 100 1700
110 Accounting 205 1700
190 Contracting - 1700
Constraint Type Search Condition Related Constraint Columns Delete Rule DEPT_ID_PK Primary - - DEPARTMENT_ID - DEPT_LOC_FK DEPT_LOC_FK Foreign - LOCATION_ID NO ACTION (RO_1505_SQL01_T01.LOCATIONS)
DEPT_MGR_FK DEPT_MGR_FK Foreign - MANAGER_ID NO ACTION (RO_1505_SQL01_T01.EMPLOYEES)
"DEPARTMENT_NAME" IS DEPT_NAME_NN Check - - - NOT NULL
………….
LOCATIONS
Column Name Data Type Nullable Default Primary Key
LOCATION_ID NUMBER(4,0) No - 1
STREET_ADDRESS VARCHAR2(40) Yes - -
POSTAL_CODE VARCHAR2(12) Yes - -
CITY VARCHAR2(30) No - -
STATE_PROVINCE VARCHAR2(25) Yes - -
COUNTRY_ID CHAR(2) Yes - - EDIT LOCATION_ID STREET_ADDRESS POSTAL_CODE CITY STATE_PROVINCE COUNTRY_ID
1800 460 Bloor St. W. ON M5S 1X8 Toronto Ontario CA
Magdalen Centre, The 2500 OX9 9ZB Oxford Oxford UK Oxford Science Park
1400 2014 Jabberwocky Rd 26192 Southlake Texas US
South San 1500 2011 Interiors Blvd 99236 California US Francisco
1700 2004 Charade Rd 98199 Seattle Washington US
I n v a l Search Delete Last i Constraint Type Condition Related Constraint Columns Rule Status Change Index d 08/23/2013 LOCATION_ ENABLE LOC_ID_P LOC_ID_PK Primary - - - 11:19:57 - ID D K AM 08/23/2013 LOC_CITY_N "CITY" IS NOT ENABLE Check - - - 11:19:57 - - N NULL D AM LOC_C_ID_FK 08/23/2013 LOC_C_ID_F COUNTRY_INO ENABLE Foreign - (RO_1505_SQL01_T01.CO 11:19:57 - - K D ACTION D UNTRIES) AM
SQL Workshop---SQL Commands
SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE LOCATION_ID=1700 SELECT a.DEPARTMENT_NAME, b.CITY, b.COUNTRY_ID, a.DEPARTMENT_NAME
FROM DEPARTMENTS a JOIN LOCATIONS b
ON ( a.LOCATION_ID = b.LOCATION_ID )
SELECT DEPARTMENT_NAME,DEPARTMENT_NAME FROM DEPARTMENTS
UNION ALL
SELECT CITY, COUNTRY_ID FROM LOCATIONS
SELECT DEPARTMENT_NAME,DEPARTMENT_NAME FROM DEPARTMENTS
INTERSECT
SELECT CITY, COUNTRY_ID FROM LOCATIONS
SELECT DEPARTMENT_NAME,DEPARTMENT_NAME FROM DEPARTMENTS
MINUS
SELECT CITY, COUNTRY_ID FROM LOCATIONS
SELECT avg(MANAGER_ID)
FROM DEPARTMENTS a, LOCATIONS b
WHERE (a.LOCATION_ID=1700) AND (b.COUNTRY_ID='US')
SELECT a.LOCATION_ID a.DEPARTMENT_NAME, b.CITY, b.COUNTRY_ID,
FROM DEPARTMENTS a JOIN LOCATIONS b
ON ( a.LOCATION_ID = b.LOCATION_ID )
!!! GROUP BY a.LOCATION_ID
!!! HAVING b.COUNTRY_ID='US' SELECT * FROM DEPARTMENTS
WHERE DEPARTMENT_NAME > ANY ( SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE DEPARTMENT_ID> 100)
SELECT * FROM DEPARTMENTS
WHERE DEPARTMENT_NAME IN ( SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE DEPARTMENT_ID> 100)
SELECT * FROM DEPARTMENTS
WHERE DEPARTMENT_NAME >ALL ( SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE DEPARTMENT_ID> 100)
SELECT * FROM DEPARTMENTS
WHERE DEPARTMENT_NAME >ANY ( SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE DEPARTMENT_ID> 100)
SELECT * FROM DEPARTMENTS
WHERE EXISTS ( SELECT DEPARTMENT_NAME FROM DEPARTMENTS
WHERE DEPARTMENT_ID> 100)
IN =ANY
NOT IN <>ALL
>ALL >maxim Constrangeri: NOT NULL, UNIQUE, CHECK CREATE TABLE unu { CNP number(13) CONSTRAINT unu_pk PRIMARY KEY , Nume varchar2(20) NOT NULL, loc varchar2(10) DEFAULT ‘IASI’ NOT NULL,} Sau CREATE TABLE doi { Nume varchar2(20) NOT NULL, Prenume varchar2(20) NOT NULL, loc varchar2(10) DEFAULT ‘IASI’ NOT NULL, CONSTRAINT unu_pk PRIMARY KEY( nume, prenume) } Sau CREATE TABLE trei { CNP number(13) UNIQUE Nume varchar2(20) NOT NULL, Prenume varchar2(20) NOT NULL, Cod_echipa number(3) REFERENCES echipe(cod), Cod_echipa number(3) CONSTRAINT ech_fk REFERENCES echipe(cod), Cod_echipa number(3), FOREIGN KEY(cod_echipa) REFERENCES echipe(cod), Cod_echipa number(3) CONSTRAINT test_fk FOREIGN KEY cod(echipa) REFERENCES echipe(cod) ON DELETE CASCADE, Cod_echipa number(3) CONSTRAINT test_fk FOREIGN KEY cod(echipa) REFERENCES echipe(cod) ON DELETE SET NULL, loc varchar2(10) DEFAULT ‘IASI’ NOT NULL, CONSTRAINT unu_pk PRIMARY KEY( nume, prenume) } Modificare table: Adaugare coloana ALTER TABLE unu ADD camp_nou number(4)UNIQUE ALTER TABLE unu ADD camp_nou number(4) NOT NULL ALTER TABLE unu ADD camp_nou number(4)PRIMARY KEY Stergere coloana ALTER TABLE unu DROP COLUMN camp_nou ALTER TABLE unu DROP COLUMN camp_nou CASCADE CONSTRAINTS MODIFICAREA unei coloane ALTER TABLE unu MODIFY camp_nou VARCHAR2(20) DEFAULT ‘D’ Adaugarea unei constrangeri ALTER TABLE unu ADD PRIMARY KEY( numecol) ALTER TABLE unu ADD CONSTRAINT unu_pk PRIMARY KEY(numecol) ALTER TABLE unu MODIFY numecol VARCHAR2(20) NOT NULL STERGERE CONSTRANGERI ALTER TABLE unu DROP CONSTRAINT numeconstrangere ALTER TABLE unu DROP PRIMARY KEY ALTER TABLE unu DROP UNIQUE (lista_col)