Oracle SQL：经典查询练手第五篇(1)(3)

/*-------6、列出在同一部门共事，入职日期晚但工资高于其他同事的员工：  
名字、工资、入职日期（关联子查询）。---------*/  
 
SQL> SELECT FIRST_NAME || ' ' || LAST_NAME AS 姓名,  
   2          SALARY AS 工资,HIRE_DATE AS 入职日期  
   3  FROM EMPLOYEES EMP1  
   4  WHERE EXISTS (  
   5        SELECT 1 FROM EMPLOYEES EMP2  
   6        WHERE EMP2.DEPARTMENT_ID = EMP1.DEPARTMENT_ID  
  7        AND   EMP1.HIRE_DATE > EMP2.HIRE_DATE  
   8        AND   EMP1.SALARY    > EMP2.SALARY  
  9        );  
 
姓名                                                   工资 入职日期  
---------------------------------------------- ---------- -----------  
Nancy Greenberg                                  12000.00 1994-8-17  
Jose Manuel Urman                                 7800.00 1998-3-7  
Shelli Baida                                      2900.00 1997-12-24  
Adam Fripp                                        8200.00 1997-4-10  
Matthew Weiss                                     8000.00 1996-7-18  
Jennifer Dilly                                    3600.00 1997-8-13  
Julia Dellinger                                   3400.00 1998-6-24  
Laura Bissot                                      3300.00 1997-8-20  
Kevin Mourgos                                     5800.00 1999-11-16  
Shanta Vollman                                    6500.00 1997-10-10  
Vance Jones                                       2800.00 1999-3-17  
Anthony Cabrio                                    3000.00 1999-2-7  
Girard Geoni                                      2800.00 2000-2-3  
Douglas Grant                                     2600.00 2000-1-13  
Donald OConnell                                   2600.00 1999-6-21  
Randall Perkins                                   2500.00 1999-12-19  
Martha Sullivan                                   2500.00 1999-6-21  
Kevin Feeney                                      3000.00 1998-5-23  
Alana Walsh                                       3100.00 1998-4-24  
Samuel McCain                                     3200.00 1998-7-1  
Timothy Gates                                     2900.00 1998-7-11  
Jean Fleaur                                       3100.00 1998-2-23  
Winston Taylor                                    3200.00 1998-1-24  
Michael Rogers                                    2900.00 1998-8-26  
Britney Everett                                   3900.00 1997-3-3  
Kelly Chung                                       3800.00 1997-6-14  
Alexis Bull                                       4100.00 1997-2-20  
Randall Matos                                     2600.00 1998-3-15  
John Seo                                          2700.00 1998-2-12  
Stephen Stiles                                    3200.00 1997-10-26  
Mozhe Atkinson                                    2800.00 1997-10-30  
Irene Mikkilineni                                 2700.00 1998-9-28  
Julia Nayer                                       3200.00 1997-7-16  
Hazel Philtanker                                  2200.00 2000-2-6  
Ki Gee                                            2400.00 1999-12-12  
Steven Markle                                     2200.00 2000-3-8  
Sarah Bell                                        4000.00 1996-2-4  
Nandita Sarchand                                  4200.00 1996-1-27  
Lisa Ozer                                        11500.00 1997-3-11  
Clara Vishney                                    10500.00 1997-11-11  
Eleni Zlotkey                                    10500.00 2000-1-29   
Gerald Cambrault                                 11000.00 1999-10-15  
Alberto Errazuriz                                12000.00 1997-3-10  
Tayler Fox                                        9600.00 1998-1-24  
Harrison Bloom                                   10000.00 1998-3-23  
Danielle Greene                                   9500.00 1999-3-19  
Charles Johnson                                   7211.00 2000-1-4  
Mattea Marvins                                    7200.00 2000-1-24  
Ellen Abel                                       11000.00 1996-5-11  
Karen Partners                                   13500.00 1997-1-5  
John Russell                                     14000.00 1996-10-1  
Peter Tucker                                     10000.00 1997-1-30  
David Bernstein                                   9500.00 1997-3-24  
Jonathon Taylor                                   8600.00 1998-3-24  
Alyssa Hutton                                     8800.00 1997-3-19  
Peter Hall                                        9000.00 1997-8-20  
Jack Livingston                                   8000.00 1998-4-23  
Christopher Olsen                                 8000.00 1998-3-30  
Elizabeth Bates                                   7300.00 1999-3-24  
William Smith                                     7400.00 1999-2-23  
Nanette Cambrault                                 7500.00 1998-12-9  
   
61 rows selected  
 
/*-------7、哪些员工跟Den(FIRST_NAME)、Raphaely(LAST_NAME)  
不在同一个部门（非关联子查询）。---------*/  
 
SQL> SELECT FIRST_NAME || ' ' || LAST_NAME  
  2  FROM EMPLOYEES  
   3  WHERE DEPARTMENT_ID <>  
  4        (SELECT DEPARTMENT_ID FROM EMPLOYEES  
   5         WHERE FIRST_NAME = 'Den' 
  6         AND LAST_NAME  = 'Raphaely' 
  7        );  
   
FIRST_NAME||''||LAST_NAME  
----------------------------------------------  
Steven King  
Neena Kochhar  
Lex De Haan  
Alexander Hunold  
Bruce Ernst  
David Austin  
Valli Pataballa  
--等等  
 
--或者  
 
SQL> SELECT FIRST_NAME || ' ' || LAST_NAME  
   2  FROM EMPLOYEES  
   3  WHERE DEPARTMENT_ID NOT IN 
   4        (SELECT DEPARTMENT_ID FROM EMPLOYEES  
   5         WHERE FIRST_NAME = 'Den' 
   6         AND LAST_NAME  = 'Raphaely' 
   7        );  
 
/*-------8、哪些员工跟Den(FIRST_NAME)、Raphaely(LAST_NAME)  
不在同一个部门（关联子查询）。---------*/  
 
SQL> SELECT FIRST_NAME || ' ' || LAST_NAME  
   2  FROM EMPLOYEES EMP1  
   3  WHERE NOT EXISTS (  
   4        SELECT 1 FROM EMPLOYEES EMP2  
   5        WHERE EMP1.DEPARTMENT_ID = EMP2.DEPARTMENT_ID  
   6        AND EMP2.FIRST_NAME =  'Den' 
   7        AND EMP2.LAST_NAME  =  'Raphaely');  
   
FIRST_NAME||''||LAST_NAME  
----------------------------------------------  
Kimberely Grant 
Lex De Haan  
Neena Kochhar  
Steven King  
Pat Fay  
Michael Hartstein  
Diana Lorentz  
Valli Pataballa  
--等等  
 
/*-------9、Finance部门有哪些职位（非关联子查询）。---------*/  
 
SQL> SELECT DISTINCT JOB_ID FROM EMPLOYEES  
   2  WHERE DEPARTMENT_ID = (  
   3        SELECT DEPARTMENT_ID FROM DEPARTMENTS  
   4        WHERE DEPARTMENT_NAME = 'Finance');  
   
JOB_ID  
----------  
FI_ACCOUNT  
FI_MGR  
 
--或者  
 
SQL> SELECT DISTINCT JOB_ID FROM EMPLOYEES  
   2  WHERE DEPARTMENT_ID IN (  
   3        SELECT DEPARTMENT_ID FROM DEPARTMENTS  
   4        WHERE DEPARTMENT_NAME = 'Finance');  
   
JOB_ID  
----------  
FI_ACCOUNT  
FI_MGR  
 
 
/*-------10、Finance部门有哪些职位（关联子查询）。---------*/  
SQL> SELECT DISTINCT JOB_ID FROM EMPLOYEES  
   2  WHERE EXISTS(  
   3        SELECT 1 FROM DEPARTMENTS  
   4        WHERE EMPLOYEES.DEPARTMENT_ID = DEPARTMENTS.DEPARTMENT_ID  
   5        AND DEPARTMENTS.DEPARTMENT_NAME = 'Finance');  
   
JOB_ID  
----------  
FI_ACCOUNT  
FI_MGR