+------------+
    |           
      |
    +------------+
    | 3. feladat |
    +------------+
    +-------------+-------------+------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
    | EMPLOYEE_ID | FIRST_NAME  | LAST_NAME  |
      EMAIL    |
      PHONE_NUMBER       | HIRE_DATE 
      | JOB_ID     | SALARY   |
      COMMISSION_PCT | MANAGER_ID | DEPARTMENT_ID |
    +-------------+-------------+------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
    |         145 |
      John        |
      Russell    | JRUSSEL  | 011.44.1344.429268 |
      1987-08-01 | SA_MAN     | 14000.00
      |           0.40
      |        100
      |           
      80 |
    |         146 |
      Karen       | Partners   |
      KPARTNER | 011.44.1344.467268 | 1987-08-02 |
      SA_MAN     | 13500.00
      |           0.30
      |        100
      |           
      80 |
    |         147 |
      Alberto     | Errazuriz  | AERRAZUR |
      011.44.1344.429278 | 1987-08-03 | SA_MAN     |
      12000.00
      |           0.30
      |        100
      |           
      80 |
    |         148 |
      Gerald      | Cambrault  | GCAMBRAU
      | 011.44.1344.619268 | 1987-08-04 | SA_MAN    
      | 11000.00
      |           0.30
      |        100
      |           
      80 |
    |         149 |
      Eleni       |
      Zlotkey    | EZLOTKEY | 011.44.1344.429018 |
      1987-08-05 | SA_MAN     | 10500.00
      |           0.20
      |        100
      |           
      80 |
    |         150 |
      Peter       |
      Tucker     | PTUCKER  |
      011.44.1344.129268 | 1987-08-06 | SA_REP     |
      10000.00
      |           0.30
      |        145
      |           
      80 |
    |         151 |
      David       | Bernstein  |
      DBERNSTE | 011.44.1344.345268 | 1987-08-07 |
      SA_REP     |  9500.00
      |           0.25
      |        145
      |           
      80 |
    |         152 |
      Peter       |
      Hall       | PHALL   
      | 011.44.1344.478968 | 1987-08-08 | SA_REP    
      |  9000.00
      |           0.25
      |        145
      |           
      80 |
    |         153 |
      Christopher | Olsen      |
      COLSEN   | 011.44.1344.498718 | 1987-08-09 |
      SA_REP     |  8000.00
      |           0.20
      |        145
      |           
      80 |
    |         154 |
      Nanette     | Cambrault  | NCAMBRAU |
      011.44.1344.987668 | 1987-08-10 | SA_REP    
      |  7500.00
      |           0.20
      |        145
      |           
      80 |
    |         155 |
      Oliver      | Tuvault    |
      OTUVAULT | 011.44.1344.486508 | 1987-08-11 |
      SA_REP     |  7000.00
      |           0.15
      |        145
      |           
      80 |
    |         156 |
      Janette     |
      King       | JKING   
      | 011.44.1345.429268 | 1987-08-12 | SA_REP    
      | 10000.00
      |           0.35
      |        146
      |           
      80 |
    |         157 |
      Patrick     |
      Sully      | PSULLY   |
      011.44.1345.929268 | 1987-08-13 | SA_REP    
      |  9500.00
      |           0.35
      |        146
      |           
      80 |
    |         158 |
      Allan       |
      McEwen     | AMCEWEN  |
      011.44.1345.829268 | 1987-08-14 | SA_REP    
      |  9000.00
      |           0.35
      |        146
      |           
      80 |
    |         159 |
      Lindsey     |
      Smith      | LSMITH   |
      011.44.1345.729268 | 1987-08-15 | SA_REP    
      |  8000.00
      |           0.30
      |        146
      |           
      80 |
    |         160 |
      Louise      |
      Doran      | LDORAN   |
      011.44.1345.629268 | 1987-08-16 | SA_REP    
      |  7500.00
      |           0.30
      |        146
      |           
      80 |
    |         161 |
      Sarath      |
      Sewall     | SSEWALL  |
      011.44.1345.529268 | 1987-08-17 | SA_REP    
      |  7000.00
      |           0.25
      |        146
      |           
      80 |
    |         162 |
      Clara       |
      Vishney    | CVISHNEY | 011.44.1346.129268 |
      1987-08-18 | SA_REP     | 10500.00
      |           0.25
      |        147
      |           
      80 |
    |         163 |
      Danielle    | Greene     |
      DGREENE  | 011.44.1346.229268 | 1987-08-19 |
      SA_REP     |  9500.00
      |           0.15
      |        147
      |           
      80 |
    |         164 |
      Mattea      | Marvins    |
      MMARVINS | 011.44.1346.329268 | 1987-08-20 |
      SA_REP     |  7200.00
      |           0.10
      |        147
      |           
      80 |
    |         165 |
      David       |
      Lee        |
      DLEE     | 011.44.1346.529268 | 1987-08-21 |
      SA_REP     |  6800.00
      |           0.10
      |        147
      |           
      80 |
    |         166 |
      Sundar      |
      Ande       | SANDE   
      | 011.44.1346.629268 | 1987-08-22 | SA_REP    
      |  6400.00
      |           0.10
      |        147
      |           
      80 |
    |         167 |
      Amit        |
      Banda      | ABANDA   |
      011.44.1346.729268 | 1987-08-23 | SA_REP    
      |  6200.00
      |           0.10
      |        147
      |           
      80 |
    |         168 |
      Lisa        |
      Ozer       | LOZER   
      | 011.44.1343.929268 | 1987-08-24 | SA_REP    
      | 11500.00
      |           0.25
      |        148
      |           
      80 |
    |         169 |
      Harrison    | Bloom      |
      HBLOOM   | 011.44.1343.829268 | 1987-08-25 |
      SA_REP     | 10000.00
      |           0.20
      |        148
      |           
      80 |
    |         170 |
      Tayler      |
      Fox        |
      TFOX     | 011.44.1343.729268 | 1987-08-26 |
      SA_REP     |  9600.00
      |           0.20
      |        148
      |           
      80 |
    |         171 |
      William     |
      Smith      | WSMITH   |
      011.44.1343.629268 | 1987-08-27 | SA_REP    
      |  7400.00
      |           0.15
      |        148
      |           
      80 |
    |         172 |
      Elizabeth   | Bates      |
      EBATES   | 011.44.1343.529268 | 1987-08-28 |
      SA_REP     |  7300.00
      |           0.15
      |        148
      |           
      80 |
    |         173 |
      Sundita     |
      Kumar      | SKUMAR   |
      011.44.1343.329268 | 1987-08-29 | SA_REP    
      |  6100.00
      |           0.10
      |        148
      |           
      80 |
    |         174 |
      Ellen       |
      Abel       | EABEL   
      | 011.44.1644.429267 | 1987-08-30 | SA_REP    
      | 11000.00
      |           0.30
      |        149
      |           
      80 |
    |         175 |
      Alyssa      |
      Hutton     | AHUTTON  |
      011.44.1644.429266 | 1987-08-31 | SA_REP    
      |  8800.00
      |           0.25
      |        149
      |           
      80 |
    |         176 |
      Jonathon    | Taylor     |
      JTAYLOR  | 011.44.1644.429265 | 1987-09-01 |
      SA_REP     |  8600.00
      |           0.20
      |        149
      |           
      80 |
    |         177 |
      Jack        | Livingston |
      JLIVINGS | 011.44.1644.429264 | 1987-09-02 |
      SA_REP     |  8400.00
      |           0.20
      |        149
      |           
      80 |
    |         178 |
      Kimberely   | Grant      |
      KGRANT   | 011.44.1644.429263 | 1987-09-03 |
      SA_REP     |  7000.00
      |           0.15
      |        149
      |            
      0 |
    |         179 |
      Charles     | Johnson    |
      CJOHNSON | 011.44.1644.429262 | 1987-09-04 |
      SA_REP     |  6200.00
      |           0.10
      |        149
      |           
      80 |
    |         180 |
      Winston     | Taylor     |
      WTAYLOR  | 650.507.9876       |
      1987-09-05 | SH_CLERK   |  3200.00
      |           0.00
      |        120
      |           
      50 |
    |         181 |
      Jean        |
      Fleaur     | JFLEAUR  |
      650.507.9877       | 1987-09-06 |
      SH_CLERK   |  3100.00
      |           0.00
      |        120
      |           
      50 |
    |         182 |
      Martha      | Sullivan   |
      MSULLIVA | 650.507.9878       |
      1987-09-07 | SH_CLERK   |  2500.00
      |           0.00
      |        120
      |           
      50 |
    |         183 |
      Girard      |
      Geoni      | GGEONI   |
      650.507.9879       | 1987-09-08 |
      SH_CLERK   |  2800.00
      |           0.00
      |        120
      |           
      50 |
    |         184 |
      Nandita     | Sarchand   | NSARCHAN
      | 650.509.1876       | 1987-09-09 |
      SH_CLERK   |  4200.00
      |           0.00
      |        121
      |           
      50 |
    |         185 |
      Alexis      |
      Bull       | ABULL   
      | 650.509.2876       | 1987-09-10 |
      SH_CLERK   |  4100.00
      |           0.00
      |        121
      |           
      50 |
    |         186 |
      Julia       | Dellinger  |
      JDELLING | 650.509.3876       |
      1987-09-11 | SH_CLERK   |  3400.00
      |           0.00
      |        121
      |           
      50 |
    |         187 |
      Anthony     | Cabrio     |
      ACABRIO  | 650.509.4876       |
      1987-09-12 | SH_CLERK   |  3000.00
      |           0.00
      |        121
      |           
      50 |
    |         188 |
      Kelly       |
      Chung      | KCHUNG   |
      650.505.1876       | 1987-09-13 |
      SH_CLERK   |  3800.00
      |           0.00
      |        122
      |           
      50 |
    |         189 |
      Jennifer    | Dilly      |
      JDILLY   |
      650.505.2876       | 1987-09-14 |
      SH_CLERK   |  3600.00
      |           0.00
      |        122
      |           
      50 |
    |         190 |
      Timothy     |
      Gates      | TGATES   |
      650.505.3876       | 1987-09-15 |
      SH_CLERK   |  2900.00
      |           0.00
      |        122
      |           
      50 |
    |         191 |
      Randall     | Perkins    |
      RPERKINS | 650.505.4876       |
      1987-09-16 | SH_CLERK   |  2500.00
      |           0.00
      |        122
      |           
      50 |
    |         192 |
      Sarah       |
      Bell       | SBELL   
      | 650.501.1876       | 1987-09-17 |
      SH_CLERK   |  4000.00
      |           0.00
      |        123
      |           
      50 |
    |         193 |
      Britney     | Everett    |
      BEVERETT | 650.501.2876       |
      1987-09-18 | SH_CLERK   |  3900.00
      |           0.00
      |        123
      |           
      50 |
    |         194 |
      Samuel      |
      McCain     | SMCCAIN  |
      650.501.3876       | 1987-09-19 |
      SH_CLERK   |  3200.00
      |           0.00
      |        123
      |           
      50 |
    |         195 |
      Vance       |
      Jones      | VJONES   |
      650.501.4876       | 1987-09-20 |
      SH_CLERK   |  2800.00
      |           0.00
      |        123
      |           
      50 |
    |         196 |
      Alana       |
      Walsh      | AWALSH   |
      650.507.9811       | 1987-09-21 |
      SH_CLERK   |  3100.00
      |           0.00
      |        124
      |           
      50 |
    |         197 |
      Kevin       |
      Feeney     | KFEENEY  |
      650.507.9822       | 1987-09-22 |
      SH_CLERK   |  3000.00
      |           0.00
      |        124
      |           
      50 |
    |         198 |
      Donald      | OConnell   |
      DOCONNEL | 650.507.9833       |
      1987-09-23 | SH_CLERK   |  2600.00
      |           0.00
      |        124
      |           
      50 |
    |         199 |
      Douglas     |
      Grant      | DGRANT   |
      650.507.9844       | 1987-09-24 |
      SH_CLERK   |  2600.00
      |           0.00
      |        124
      |           
      50 |
    |         200 |
      Jennifer    | Whalen     |
      JWHALEN  | 515.123.4444       |
      1987-09-25 | AD_ASST    |  4400.00
      |           0.00
      |        101
      |           
      10 |
    |         201 |
      Michael     | Hartstein  | MHARTSTE |
      515.123.5555       | 1987-09-26 |
      MK_MAN     | 13000.00
      |           0.00
      |        100
      |           
      20 |
    |         202 |
      Pat         |
      Fay        |
      PFAY     |
      603.123.6666       | 1987-09-27 |
      MK_REP     |  6000.00
      |           0.00
      |        201
      |           
      20 |
    |         203 |
      Susan       |
      Mavris     | SMAVRIS  |
      515.123.7777       | 1987-09-28 |
      HR_REP     |  6500.00
      |           0.00
      |        101
      |           
      40 |
    |         204 |
      Hermann     |
      Baer       | HBAER   
      | 515.123.8888       | 1987-09-29 |
      PR_REP     | 10000.00
      |           0.00
      |        101
      |           
      70 |
    |         205 |
      Shelley     | Higgins    |
      SHIGGINS | 515.123.8080       |
      1987-09-30 | AC_MGR     | 12000.00
      |           0.00
      |        101
      |           110
      |
    |         206 |
      William     |
      Gietz      | WGIETZ   |
      515.123.8181       | 1987-10-01 |
      AC_ACCOUNT |  8300.00
      |           0.00
      |        205
      |           110
      |
    +-------------+-------------+------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
    +------------+
    |           
      |
    +------------+
    | 4. feladat |
    +------------+
    +-------------+-------------+---------------+
    | LAST_NAME   | FIRST_NAME  | Years in work
      |
    +-------------+-------------+---------------+
    | King        |
      Steven     
      |           
      30 |
    | Kochhar     |
      Neena      
      |           
      30 |
    | De Haan     |
      Lex        
      |           
      30 |
    | Hunold      |
      Alexander  
      |           
      30 |
    | Ernst       |
      Bruce      
      |           
      30 |
    | Austin      |
      David      
      |           
      30 |
    | Pataballa   |
      Valli      
      |           
      30 |
    | Lorentz     |
      Diana      
      |           
      30 |
    | Greenberg   |
      Nancy      
      |           
      30 |
    | Faviet      |
      Daniel     
      |           
      30 |
    | Chen        |
      John       
      |           
      30 |
    | Sciarra     |
      Ismael     
      |           
      30 |
    | Urman       | Jose Manuel
      |           
      30 |
    | Popp        |
      Luis       
      |           
      30 |
    | Raphaely    |
      Den        
      |           
      30 |
    | Khoo        |
      Alexander  
      |           
      30 |
    | Baida       |
      Shelli     
      |           
      30 |
    | Tobias      |
      Sigal      
      |           
      30 |
    | Himuro      |
      Guy        
      |           
      30 |
    | Colmenares  |
      Karen      
      |           
      30 |
    | Weiss       |
      Matthew    
      |           
      30 |
    | Fripp       |
      Adam       
      |           
      30 |
    | Kaufling    |
      Payam      
      |           
      30 |
    | Vollman     |
      Shanta     
      |           
      30 |
    | Mourgos     |
      Kevin      
      |           
      30 |
    | Nayer       |
      Julia      
      |           
      30 |
    | Mikkilineni | Irene      
      |           
      30 |
    | Landry      |
      James      
      |           
      30 |
    | Markle      |
      Steven     
      |           
      30 |
    | Bissot      |
      Laura      
      |           
      30 |
    | Atkinson    |
      Mozhe      
      |           
      30 |
    | Marlow      |
      James      
      |           
      30 |
    | Olson       |
      TJ         
      |           
      30 |
    | Mallin      |
      Jason      
      |           
      30 |
    | Rogers      |
      Michael    
      |           
      30 |
    | Gee         |
      Ki         
      |           
      30 |
    | Philtanker  |
      Hazel      
      |           
      30 |
    | Ladwig      |
      Renske     
      |           
      30 |
    | Stiles      |
      Stephen    
      |           
      30 |
    | Seo         |
      John       
      |           
      30 |
    | Patel       |
      Joshua     
      |           
      30 |
    | Rajs        |
      Trenna     
      |           
      30 |
    | Davies      |
      Curtis     
      |           
      30 |
    | Matos       |
      Randall    
      |           
      30 |
    | Vargas      |
      Peter      
      |           
      30 |
    | Russell     |
      John       
      |           
      30 |
    | Partners    |
      Karen      
      |           
      30 |
    | Errazuriz   | Alberto    
      |           
      30 |
    | Cambrault   |
      Gerald     
      |           
      30 |
    | Zlotkey     |
      Eleni      
      |           
      30 |
    | Tucker      |
      Peter      
      |           
      30 |
    | Bernstein   |
      David      
      |           
      30 |
    | Hall        |
      Peter      
      |           
      30 |
    | Olsen       | Christopher
      |           
      30 |
    | Cambrault   | Nanette    
      |           
      30 |
    | Tuvault     |
      Oliver     
      |           
      30 |
    | King        |
      Janette    
      |           
      30 |
    | Sully       |
      Patrick    
      |           
      30 |
    | McEwen      |
      Allan      
      |           
      30 |
    | Smith       |
      Lindsey    
      |           
      30 |
    | Doran       |
      Louise     
      |           
      30 |
    | Sewall      |
      Sarath     
      |           
      30 |
    | Vishney     |
      Clara      
      |           
      30 |
    | Greene      |
      Danielle   
      |           
      30 |
    | Marvins     |
      Mattea     
      |           
      30 |
    | Lee         |
      David      
      |           
      30 |
    | Ande        |
      Sundar     
      |           
      30 |
    | Banda       |
      Amit       
      |           
      30 |
    | Ozer        |
      Lisa       
      |           
      30 |
    | Bloom       |
      Harrison   
      |           
      30 |
    | Fox         |
      Tayler     
      |           
      30 |
    | Smith       |
      William    
      |           
      30 |
    | Bates       |
      Elizabeth  
      |           
      30 |
    | Kumar       |
      Sundita    
      |           
      30 |
    | Abel        |
      Ellen      
      |           
      30 |
    | Hutton      |
      Alyssa     
      |           
      30 |
    | Taylor      |
      Jonathon   
      |           
      30 |
    | Livingston  |
      Jack       
      |           
      30 |
    | Grant       |
      Kimberely  
      |           
      30 |
    | Johnson     |
      Charles    
      |           
      30 |
    | Taylor      |
      Winston    
      |           
      30 |
    | Fleaur      |
      Jean       
      |           
      30 |
    | Sullivan    |
      Martha     
      |           
      30 |
    | Geoni       |
      Girard     
      |           
      30 |
    | Sarchand    |
      Nandita    
      |           
      30 |
    | Bull        |
      Alexis     
      |           
      30 |
    | Dellinger   |
      Julia      
      |           
      30 |
    | Cabrio      |
      Anthony    
      |           
      30 |
    | Chung       |
      Kelly      
      |           
      30 |
    | Dilly       |
      Jennifer   
      |           
      30 |
    | Gates       |
      Timothy    
      |           
      30 |
    | Perkins     |
      Randall    
      |           
      30 |
    | Bell        |
      Sarah      
      |           
      30 |
    | Everett     |
      Britney    
      |           
      30 |
    | McCain      |
      Samuel     
      |           
      30 |
    | Jones       |
      Vance      
      |           
      30 |
    | Walsh       |
      Alana      
      |           
      30 |
    | Feeney      |
      Kevin      
      |           
      30 |
    | OConnell    |
      Donald     
      |           
      30 |
    | Grant       |
      Douglas    
      |           
      30 |
    | Whalen      |
      Jennifer   
      |           
      30 |
    | Hartstein   | Michael    
      |           
      30 |
    | Fay         |
      Pat        
      |           
      30 |
    | Mavris      |
      Susan      
      |           
      30 |
    | Baer        |
      Hermann    
      |           
      30 |
    | Higgins     |
      Shelley    
      |           
      30 |
    | Gietz       |
      William    
      |           
      30 |
    +-------------+-------------+---------------+
    +------------+
    |           
      |
    +------------+
    | 5. feladat |
    +------------+
    +------------+----------+
    | job_id     | maxfiz   |
    +------------+----------+
    | AD_PRES    | 24000.00 |
    | AD_VP      | 17000.00 |
    | SA_MAN     | 14000.00 |
    | MK_MAN     | 13000.00 |
    | FI_MGR     | 12000.00 |
    | AC_MGR     | 12000.00 |
    | SA_REP     | 11500.00 |
    | PU_MAN     | 11000.00 |
    | PR_REP     | 10000.00 |
    | FI_ACCOUNT |  9000.00 |
    | IT_PROG    |  9000.00 |
    | AC_ACCOUNT |  8300.00 |
    | ST_MAN     |  8200.00 |
    | HR_REP     |  6500.00 |
    | MK_REP     |  6000.00 |
    | AD_ASST    |  4400.00 |
    | SH_CLERK   |  4200.00 |
    | ST_CLERK   |  3600.00 |
    | PU_CLERK   |  3100.00 |
    +------------+----------+
    +------------+
    |           
      |
    +------------+
    | 6. feladat |
    +------------+
    +---------------+--------------+
    | DEPARTMENT_ID | Total salary |
    +---------------+--------------+
    |           
      50 |    156400.00 |
    |           
      80 |    304500.00 |
    +---------------+--------------+
    +------------+
    |           
      |
    +------------+
    | 7. feladat |
    +------------+
    +------------+-----------+
    | first_name | last_name |
    +------------+-----------+
    | Alexander  | Hunold    |
    | Bruce      |
      Ernst     |
    | David      |
      Austin    |
    | Valli      | Pataballa |
    | Diana      | Lorentz  
      |
    +------------+-----------+
    +------------+
    |           
      |
    +------------+
    | 8. feladat |
    +------------+
    +------------+-----------+
    | first_name | last_name |
    +------------+-----------+
    | Gerald     | Cambrault |
    | Lex        | De
      Haan   |
    | Alberto    | Errazuriz |
    | Adam       |
      Fripp     |
    | Nancy      | Greenberg |
    | Michael    | Hartstein |
    | Shelley    | Higgins   |
    | Alexander  | Hunold    |
    | Payam      | Kaufling  |
    | Steven     |
      King      |
    | Neena      | Kochhar  
      |
    | Kevin      | Mourgos  
      |
    | Karen      | Partners  |
    | Den        |
      Raphaely  |
    | John       |
      Russell   |
    | Shanta     | Vollman   |
    | Matthew    | Weiss    
      |
    | Eleni      | Zlotkey  
      |
    +------------+-----------+
    +------------+
    |           
      |
    +------------+
    | 9. feladat |
    +------------+
    +------------+------------+------------+----------+
    | first_name | last_name  |
      job_id     | salary   |
    +------------+------------+------------+----------+
    | Steven     |
      King       |
      AD_PRES    | 24000.00 |
    | Neena      |
      Kochhar    | AD_VP      |
      17000.00 |
    | Lex        | De
      Haan    | AD_VP      |
      17000.00 |
    | Diana      |
      Lorentz    | IT_PROG    | 
      4200.00 |
    | Nancy      | Greenberg  |
      FI_MGR     | 12000.00 |
    | Luis       |
      Popp       | FI_ACCOUNT | 
      6900.00 |
    | Den        |
      Raphaely   | PU_MAN     | 11000.00 |
    | Karen      | Colmenares |
      PU_CLERK   |  2500.00 |
    | Kevin      |
      Mourgos    | ST_MAN     | 
      5800.00 |
    | TJ         |
      Olson      | ST_CLERK   | 
      2100.00 |
    | Eleni      |
      Zlotkey    | SA_MAN     |
      10500.00 |
    | Sundita    |
      Kumar      |
      SA_REP     |  6100.00 |
    | Martha     | Sullivan   |
      SH_CLERK   |  2500.00 |
    | Randall    | Perkins    |
      SH_CLERK   |  2500.00 |
    | Jennifer   | Whalen     |
      AD_ASST    |  4400.00 |
    | Michael    | Hartstein  |
      MK_MAN     | 13000.00 |
    | Pat        |
      Fay        |
      MK_REP     |  6000.00 |
    | Susan      |
      Mavris     | HR_REP    
      |  6500.00 |
    | Hermann    |
      Baer       |
      PR_REP     | 10000.00 |
    | Shelley    | Higgins    |
      AC_MGR     | 12000.00 |
    | William    |
      Gietz      | AC_ACCOUNT |  8300.00 |
    +------------+------------+------------+----------+
    
    +------------+
    |           
      |
    +------------+
    | 10. feladat |
    +------------+
    +-------------+-------------+
    | first_name  | last_name   |
    +-------------+-------------+
    | Bruce       |
      Ernst       |
    | David       |
      Austin      |
    | Valli       |
      Pataballa   |
    | Diana       |
      Lorentz     |
    | Julia       |
      Nayer       |
    | Irene       | Mikkilineni |
    | James       |
      Landry      |
    | Steven      |
      Markle      |
    | Winston     |
      Taylor      |
    | Jean        |
      Fleaur      |
    | Martha      |
      Sullivan    |
    | Girard      |
      Geoni       |
    | Laura       |
      Bissot      |
    | Mozhe       |
      Atkinson    |
    | James       |
      Marlow      |
    | TJ         
      | Olson       |
    | Nandita     |
      Sarchand    |
    | Alexis      |
      Bull        |
    | Julia       |
      Dellinger   |
    | Anthony     |
      Cabrio      |
    | Jason       |
      Mallin      |
    | Michael     |
      Rogers      |
    | Ki         
      | Gee         |
    | Hazel       |
      Philtanker  |
    | Kelly       |
      Chung       |
    | Jennifer    |
      Dilly       |
    | Timothy     |
      Gates       |
    | Randall     |
      Perkins     |
    | Renske      |
      Ladwig      |
    | Stephen     |
      Stiles      |
    | John        |
      Seo         |
    | Joshua      |
      Patel       |
    | Sarah       |
      Bell        |
    | Britney     |
      Everett     |
    | Samuel      |
      McCain      |
    | Vance       |
      Jones       |
    | Trenna      |
      Rajs        |
    | Curtis      |
      Davies      |
    | Randall     |
      Matos       |
    | Peter       |
      Vargas      |
    | Alana       |
      Walsh       |
    | Kevin       |
      Feeney      |
    | Donald      |
      OConnell    |
    | Douglas     |
      Grant       |
    | Alexander   |
      Khoo        |
    | Shelli      |
      Baida       |
    | Sigal       |
      Tobias      |
    | Guy         |
      Himuro      |
    | Karen       |
      Colmenares  |
    | Neena       |
      Kochhar     |
    | Lex         | De
      Haan     |
    | Den         |
      Raphaely    |
    | Matthew     |
      Weiss       |
    | Adam        |
      Fripp       |
    | Payam       |
      Kaufling    |
    | Shanta      |
      Vollman     |
    | Kevin       |
      Mourgos     |
    | John        |
      Russell     |
    | Karen       |
      Partners    |
    | Alberto     | Errazuriz   |
    | Gerald      |
      Cambrault   |
    | Eleni       |
      Zlotkey     |
    | Michael     | Hartstein   |
    | Nancy       |
      Greenberg   |
    | Jennifer    |
      Whalen      |
    | Susan       |
      Mavris      |
    | Hermann     |
      Baer        |
    | Shelley     |
      Higgins     |
    | Alexander   |
      Hunold      |
    | Daniel      |
      Faviet      |
    | John        |
      Chen        |
    | Ismael      |
      Sciarra     |
    | Jose Manuel | Urman       |
    | Luis        |
      Popp        |
    | William     |
      Gietz       |
    +-------------+-------------+
    +-------------+
    |            
      |
    +-------------+
    | 11. feladat |
    +-------------+
    +------------+-----------+
    | first_name | last_name |
    +------------+-----------+
    | Gerald     | Cambrault |
    | Lex        | De
      Haan   |
    | Alberto    | Errazuriz |
    | Adam       |
      Fripp     |
    | Nancy      | Greenberg |
    | Michael    | Hartstein |
    | Shelley    | Higgins   |
    | Alexander  | Hunold    |
    | Payam      | Kaufling  |
    | Steven     |
      King      |
    | Neena      | Kochhar  
      |
    | Kevin      | Mourgos  
      |
    | Karen      | Partners  |
    | Den        |
      Raphaely  |
    | John       |
      Russell   |
    | Shanta     | Vollman   |
    | Matthew    | Weiss    
      |
    | Eleni      | Zlotkey  
      |
    +------------+-----------+
    +------------+-----------+
    | FIRST_NAME | LAST_NAME |
    +------------+-----------+
    | Steven     |
      King      |
    | Neena      | Kochhar  
      |
    | Lex        | De
      Haan   |
    | Alexander  | Hunold    |
    | Nancy      | Greenberg |
    | Den        |
      Raphaely  |
    | Matthew    | Weiss    
      |
    | Adam       |
      Fripp     |
    | Payam      | Kaufling  |
    | Shanta     | Vollman   |
    | Kevin      | Mourgos  
      |
    | John       |
      Russell   |
    | Karen      | Partners  |
    | Alberto    | Errazuriz |
    | Gerald     | Cambrault |
    | Eleni      | Zlotkey  
      |
    | Michael    | Hartstein |
    | Shelley    | Higgins   |
    +------------+-----------+
    +-------------+
    |            
      |
    +-------------+
    | 12. feladat |
    +-------------+
    +--------+---------------------+--------+---------------------+
    | Emp_Id |
      Employee           
      | Mgr_Id |
      Manager            
      |
    +--------+---------------------+--------+---------------------+
    |    101 | Kochhar, 
      Neena     |    100 |
      King,  Steven       |
    |    102 | De Haan, 
      Lex       |    100 |
      King,  Steven       |
    |    103 | Hunold,  Alexander 
      |    102 | De Haan, 
      Lex       |
    |    104 | Ernst, 
      Bruce       |    103
      | Hunold,  Alexander  |
    |    105 | Austin, 
      David      |    103 |
      Hunold,  Alexander  |
    |    106 | Pataballa, 
      Valli   |    103 | Hunold, 
      Alexander  |
    |    107 | Lorentz, 
      Diana     |    103 |
      Hunold,  Alexander  |
    |    108 | Greenberg, 
      Nancy   |    101 | Kochhar, 
      Neena     |
    |    109 | Faviet, 
      Daniel     |    108 |
      Greenberg,  Nancy   |
    |    110 | Chen, 
      John        
      |    108 | Greenberg,  Nancy   |
    |    111 | Sciarra, 
      Ismael    |    108 |
      Greenberg,  Nancy   |
    |    112 | Urman,  Jose Manuel
      |    108 | Greenberg,  Nancy   |
    |    113 | Popp, 
      Luis        
      |    108 | Greenberg,  Nancy   |
    |    114 | Raphaely, 
      Den      |    100 |
      King,  Steven       |
    |    115 | Khoo, 
      Alexander    |    114 |
      Raphaely,  Den      |
    |    116 | Baida, 
      Shelli      |    114 |
      Raphaely,  Den      |
    |    117 | Tobias, 
      Sigal      |    114 |
      Raphaely,  Den      |
    |    118 | Himuro, 
      Guy        |   
      114 | Raphaely,  Den      |
    |    119 | Colmenares,  Karen 
      |    114 | Raphaely, 
      Den      |
    |    120 | Weiss, 
      Matthew     |    100 |
      King,  Steven       |
    |    121 | Fripp, 
      Adam        |   
      100 | King,  Steven       |
    |    122 | Kaufling, 
      Payam    |    100 | King, 
      Steven       |
    |    123 | Vollman, 
      Shanta    |    100 | King, 
      Steven       |
    |    124 | Mourgos, 
      Kevin     |    100 |
      King,  Steven       |
    |    125 | Nayer, 
      Julia       |    120
      | Weiss,  Matthew     |
    |    126 | Mikkilineni,  Irene
      |    120 | Weiss, 
      Matthew     |
    |    127 | Landry, 
      James      |    120 |
      Weiss,  Matthew     |
    |    128 | Markle, 
      Steven     |    120 |
      Weiss,  Matthew     |
    |    129 | Bissot, 
      Laura      |    121 |
      Fripp,  Adam        |
    |    130 | Atkinson, 
      Mozhe    |    121 | Fripp, 
      Adam        |
    |    131 | Marlow, 
      James      |    121 |
      Fripp,  Adam        |
    |    132 | Olson, 
      TJ         
      |    121 | Fripp, 
      Adam        |
    |    133 | Mallin, 
      Jason      |    122 |
      Kaufling,  Payam    |
    |    134 | Rogers, 
      Michael    |    122 |
      Kaufling,  Payam    |
    |    135 | Gee, 
      Ki           
      |    122 | Kaufling,  Payam   
      |
    |    136 | Philtanker,  Hazel 
      |    122 | Kaufling,  Payam   
      |
    |    137 | Ladwig, 
      Renske     |    123 |
      Vollman,  Shanta    |
    |    138 | Stiles, 
      Stephen    |    123 | Vollman, 
      Shanta    |
    |    139 | Seo, 
      John         
      |    123 | Vollman,  Shanta   
      |
    |    140 | Patel, 
      Joshua      |    123 |
      Vollman,  Shanta    |
    |    141 | Rajs, 
      Trenna       |    124
      | Mourgos,  Kevin     |
    |    142 | Davies, 
      Curtis     |    124 |
      Mourgos,  Kevin     |
    |    143 | Matos, 
      Randall     |    124 |
      Mourgos,  Kevin     |
    |    144 | Vargas, 
      Peter      |    124 |
      Mourgos,  Kevin     |
    |    145 | Russell, 
      John      |    100 |
      King,  Steven       |
    |    146 | Partners, 
      Karen    |    100 | King, 
      Steven       |
    |    147 | Errazuriz,  Alberto
      |    100 | King, 
      Steven       |
    |    148 | Cambrault,  Gerald 
      |    100 | King, 
      Steven       |
    |    149 | Zlotkey, 
      Eleni     |    100 |
      King,  Steven       |
    |    150 | Tucker, 
      Peter      |    145 |
      Russell,  John      |
    |    151 | Bernstein, 
      David   |    145 | Russell, 
      John      |
    |    152 | Hall, 
      Peter       
      |    145 | Russell, 
      John      |
    |    153 | Olsen,  Christopher
      |    145 | Russell, 
      John      |
    |    154 | Cambrault,  Nanette
      |    145 | Russell, 
      John      |
    |    155 | Tuvault, 
      Oliver    |    145 | Russell, 
      John      |
    |    156 | King, 
      Janette      |    146 |
      Partners,  Karen    |
    |    157 | Sully, 
      Patrick     |    146 |
      Partners,  Karen    |
    |    158 | McEwen, 
      Allan      |    146 |
      Partners,  Karen    |
    |    159 | Smith, 
      Lindsey     |    146 |
      Partners,  Karen    |
    |    160 | Doran, 
      Louise      |    146 |
      Partners,  Karen    |
    |    161 | Sewall, 
      Sarath     |    146 |
      Partners,  Karen    |
    |    162 | Vishney, 
      Clara     |    147 |
      Errazuriz,  Alberto |
    |    163 | Greene, 
      Danielle   |    147 | Errazuriz, 
      Alberto |
    |    164 | Marvins, 
      Mattea    |    147 |
      Errazuriz,  Alberto |
    |    165 | Lee, 
      David        
      |    147 | Errazuriz,  Alberto |
    |    166 | Ande, 
      Sundar       |    147
      | Errazuriz,  Alberto |
    |    167 | Banda, 
      Amit        |   
      147 | Errazuriz,  Alberto |
    |    168 | Ozer, 
      Lisa        
      |    148 | Cambrault,  Gerald  |
    |    169 | Bloom, 
      Harrison    |    148 |
      Cambrault,  Gerald  |
    |    170 | Fox, 
      Tayler       
      |    148 | Cambrault,  Gerald  |
    |    171 | Smith, 
      William     |    148 |
      Cambrault,  Gerald  |
    |    172 | Bates, 
      Elizabeth   |    148 | Cambrault, 
      Gerald  |
    |    173 | Kumar, 
      Sundita     |    148 |
      Cambrault,  Gerald  |
    |    174 | Abel, 
      Ellen       
      |    149 | Zlotkey, 
      Eleni     |
    |    175 | Hutton, 
      Alyssa     |    149 |
      Zlotkey,  Eleni     |
    |    176 | Taylor, 
      Jonathon   |    149 | Zlotkey, 
      Eleni     |
    |    177 | Livingston, 
      Jack   |    149 | Zlotkey, 
      Eleni     |
    |    178 | Grant, 
      Kimberely   |    149 | Zlotkey, 
      Eleni     |
    |    179 | Johnson, 
      Charles   |    149 | Zlotkey, 
      Eleni     |
    |    180 | Taylor, 
      Winston    |    120 | Weiss, 
      Matthew     |
    |    181 | Fleaur, 
      Jean       |    120 |
      Weiss,  Matthew     |
    |    182 | Sullivan, 
      Martha   |    120 | Weiss, 
      Matthew     |
    |    183 | Geoni, 
      Girard      |    120 |
      Weiss,  Matthew     |
    |    184 | Sarchand,  Nandita 
      |    121 | Fripp, 
      Adam        |
    |    185 | Bull, 
      Alexis       |    121
      | Fripp,  Adam        |
    |    186 | Dellinger, 
      Julia   |    121 | Fripp, 
      Adam        |
    |    187 | Cabrio, 
      Anthony    |    121 | Fripp, 
      Adam        |
    |    188 | Chung, 
      Kelly       |    122
      | Kaufling,  Payam    |
    |    189 | Dilly, 
      Jennifer    |    122 |
      Kaufling,  Payam    |
    |    190 | Gates, 
      Timothy     |    122 |
      Kaufling,  Payam    |
    |    191 | Perkins, 
      Randall   |    122 | Kaufling, 
      Payam    |
    |    192 | Bell, 
      Sarah       
      |    123 | Vollman,  Shanta   
      |
    |    193 | Everett, 
      Britney   |    123 | Vollman, 
      Shanta    |
    |    194 | McCain, 
      Samuel     |    123 |
      Vollman,  Shanta    |
    |    195 | Jones, 
      Vance       |    123
      | Vollman,  Shanta    |
    |    196 | Walsh, 
      Alana       |    124
      | Mourgos,  Kevin     |
    |    197 | Feeney, 
      Kevin      |    124 |
      Mourgos,  Kevin     |
    |    198 | OConnell, 
      Donald   |    124 | Mourgos, 
      Kevin     |
    |    199 | Grant, 
      Douglas     |    124 |
      Mourgos,  Kevin     |
    |    200 | Whalen, 
      Jennifer   |    101 | Kochhar, 
      Neena     |
    |    201 | Hartstein,  Michael
      |    100 | King, 
      Steven       |
    |    202 | Fay, 
      Pat          
      |    201 | Hartstein,  Michael |
    |    203 | Mavris, 
      Susan      |    101 |
      Kochhar,  Neena     |
    |    204 | Baer, 
      Hermann      |    101 |
      Kochhar,  Neena     |
    |    205 | Higgins, 
      Shelley   |    101 | Kochhar, 
      Neena     |
    |    206 | Gietz, 
      William     |    205 |
      Higgins,  Shelley   |
    +--------+---------------------+--------+---------------------+
    +-------------+
    |            
      |
    +-------------+
    | 13. feladat |
    +-------------+
    +---------------+------------------+-----------------+
    | department_id | Department Name  | No of Employees |
    +---------------+------------------+-----------------+
    |          
      110 | Accounting      
      |              
      2 |
    |           
      10 | Administration  
      |              
      1 |
    |           
      90 | Executive       
      |              
      3 |
    |          
      100 |
      Finance         
      |              
      6 |
    |           
      40 | Human Resources 
      |              
      1 |
    |           
      60 |
      IT              
      |              
      5 |
    |           
      20 | Marketing       
      |              
      2 |
    |           
      70 | Public Relations
      |              
      1 |
    |           
      30 | Purchasing      
      |              
      6 |
    |           
      80 |
      Sales           
      |             
      34 |
    |           
      50 | Shipping        
      |             
      45 |
    +---------------+------------------+-----------------+
    +-------------+
    |            
      |
    +-------------+
    | 14. feladat |
    +-------------+
    +-------------+------------+------------+------------+---------------+
    | EMPLOYEE_ID | START_DATE | END_DATE   |
      JOB_ID     | DEPARTMENT_ID |
    +-------------+------------+------------+------------+---------------+
    |         101 |
      1989-09-21 | 1993-10-27 | AC_ACCOUNT
      |           110
      |
    |         101 |
      1993-10-28 | 1997-03-15 | AC_MGR    
      |           110
      |
    |         102 |
      1993-01-13 | 1998-07-24 | IT_PROG   
      |           
      60 |
    |         114 |
      1998-03-24 | 1999-12-31 | ST_CLERK  
      |           
      50 |
    |         201 |
      1996-02-17 | 1999-12-19 | MK_REP    
      |           
      20 |
    +-------------+------------+------------+------------+---------------+
    +-------------+
    |            
      |
    +-------------+
    | 15. feladat |
    +-------------+
    +-------------+--------------+
    | EMPLOYEE_ID | Napok száma  |
    +-------------+--------------+
    |         101
      |         2731 |
    |         102
      |         2018 |
    |         114
      |          647 |
    |         122
      |          364 |
    |         176
      |          646 |
    |         201
      |         1401 |
    +-------------+--------------+
    +-------------+
    |            
      |
    +-------------+
    | 16. feladat |
    +-------------+
    +-------------------------+----------------------+-------------------+
    |
      Régió                  
      | Alkalmazottak száma  | Osztályok száma   |
    +-------------------------+----------------------+-------------------+
    |
      Americ                 
      |                  
      26
      |               
      24 |
    |
      Asia                   
      |                   
      0
      |                
      0 |
    | Europe          
            
      |                   
      0
      |                
      2 |
    | Middle East and Africa 
      |                   
      0
      |                
      0 |
    +-------------------------+----------------------+-------------------+
    +-------------+
    |            
      |
    +-------------+
    | 17. feladat |
    +-------------+
    +---------------------+--------------------------+----------------------+
    |
      CITY               
      |
      COUNTRY_NAME            
      | COUNT(DEPARTMENT_ID) |
    +---------------------+--------------------------+----------------------+
    |
      Beijing            
      |
      China                   
      |                   
      0 |
    |
      Bern               
      |
      Switzerland             
      |                   
      0 |
    |
      Bombay             
      |
      India                   
      |                   
      0 |
    |
      Geneva             
      |
      Switzerland             
      |                   
      0 |
    |
      Hiroshima          
      |
      Japan                   
      |                   
      0 |
    |
      Roma               
      |
      Italy                   
      |                   
      0 |
    | Sao
      Paulo          
      |
      Brazil                  
      |                   
      0 |
    |
      Seattle            
      | United States of America
      |                   
      2 |
    |
      Singapore          
      |
      Singapore               
      |                   
      0 |
    | South Brunswick     | United States
      of America
      |                   
      0 |
    | South San Francisco | United States of America
      |                   
      1 |
    |
      Stretford          
      | United
      Kingdom          
      |                   
      0 |
    |
      Sydney             
      |
      Australia               
      |                   
      0 |
    |
      Tokyo              
      |
      Japan                   
      |                   
      0 |
    |
      Utrecht            
      |
      Netherlands             
      |                   
      0 |
    |
      Venice             
      |
      Italy                   
      |                   
      0 |
    |
      Whitehorse          |
      Canada                  
      |                   
      0 |
    +---------------------+--------------------------+----------------------+