[推荐]ORACLE SQL：经典查询练手第三篇(不懂装懂，永世饭桶！)
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[推荐]ORACLE SQL：经典查询练手第三篇(不懂装懂，永世饭桶！)
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[推薦]ORACLE SQL：經典查詢練手第三篇(不懂裝懂，永世飯桶！)
Name????????Type?????????Nullable?Default?Comments?
-----------?------------?--------?-------?--------?
REGION_ID???NUMBER?????????????????????????????????
REGION_NAME?VARCHAR2(25)?Y
2.?列出前五位每個員工的名字，工資、漲薪后的的工資（漲幅為8%），以“元”為單位進行四舍五入。
3.?找出誰是最高領導，將名字按大寫形式顯示。
4.?找出First_Name?為David，Last_Name為Austin?的直接領導名字。
5.?First_Name?為Alexander，Last_Name為Hunold領導誰。（誰向David?報告）。
6.?哪些員工的工資高于他直接上司的工資，列出員工的名字和工資，上司的名字和工資。
7.?哪些員工和Chen(LAST_NAME)同部門。
8.?哪些員工跟De?Haan(LAST_NAME)做一樣職位。
9.?哪些員工跟Hall(LAST_NAME)不在同一個部門。
10.?哪些員工跟William（FIRST_NAME）、Smith(LAST_NAME)做不一樣的職位。
11.?顯示有提成的員工的信息：名字、提成、所在部門名稱、所在地區的名稱。
12.?顯示Executive部門有哪些職位。
13.?整個公司中，最高工資和最低工資相差多少。
14.?提成大于0?的人數。
15.?顯示整個公司的最高工資、最低工資、工資總和、平均工資保留到整數位。
16.?整個公司有多少個領導。
17.?列出在同一部門入職日期晚但工資高于其他同事的員工：名字、工資、入職日期。
-----在沒有設置NLS_LANG的情況下：
SQL>?SELECT?TO_CHAR(SALARY,'L99,999.99')
???2??FROM?HR.EMPLOYEES
???3??WHERE?ROWNUM?<?5;
TO_CHAR(SALARY,'L99,999.99')
----------------------------
?????????￥24,000.00
?????????￥20,000.00
?????????￥20,000.00
??????????￥9,000.00
SQL>?SELECT?TO_CHAR(SALARY,'$99,999.99')
???2??FROM?HR.EMPLOYEES
???3??WHERE?ROWNUM?<?5;
?
TO_CHAR(SALARY,'$99,999.99')
----------------------------
?$24,000.00
?$20,000.00
?$20,000.00
??$9,000.00
/*--說明：對于'$99,999.99'格式符：
L：表示強制顯示當地貨幣符號
$:?表示顯示美元符號
9:?表示一個數字
0:?表示強制0顯示
.:?表示一個小數點
,:?表示一個千位分隔符
--------------*/
/*--------2、列出前五位每個員工的名字，工資、漲薪后的的工資（漲幅為8%），以“元”為單位進行四舍五入。---------*/
SQL>?SELECT?FIRST_NAME,SALARY,ROUND(SALARY?*?1.08)?FROM?HR.EMPLOYEES
???2??WHERE?ROWNUM?<=5;
?
FIRST_NAME???????????????SALARY?ROUND(SALARY*1.08)
--------------------?----------?------------------
Steven?????????????????24000.00??????????????25920
Neena??????????????????20000.00??????????????21600
Lex????????????????????20000.00??????????????21600
Alexander???????????????9000.00???????????????9720
Bruce???????????????????6000.00???????????????6480
/*--------3、找出誰是最高領導，將名字按大寫形式顯示。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||?'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?MANAGER_ID?IS?NULL;
?
NAME
----------------------------------------------
STEVEN?KING
/*--------4、找出David?的直接領導的名字。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?EMPLOYEE_ID?IN(
???4??SELECT?MANAGER_ID?FROM?HR.EMPLOYEES
???5??WHERE?FIRST_NAME?=?'David'?AND?LAST_NAME?=?'Austin');
?
NAME
----------------------------------------------
ALEXANDER?HUNOLD
--或采用以下方法
SQL>?SELECT?UPPER(?EMP1.FIRST_NAME?||'?'?||??EMP1.LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES?EMP1,HR.EMPLOYEES?EMP2
???3??WHERE?EMP1.EMPLOYEE_ID?=?EMP2.MANAGER_ID
???4??AND?EMP2.FIRST_NAME?=?'David'?AND?EMP2.LAST_NAME?=??'Austin';?
NAME
----------------------------------------------
ALEXANDER?HUNOLD
?
/*--------5、First_Name?為Alexander，LAST_NAME為Hunold領導誰。（誰向David?報告）。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?MANAGER_ID?IN(
???4??SELECT?EMPLOYEE_ID?FROM?HR.EMPLOYEES
???5??WHERE?FIRST_NAME?=?'Alexander'?AND?LAST_NAME?=?'Hunold');
?
NAME
----------------------------------------------
BRUCE?ERNST
DAVID?AUSTIN
VALLI?PATABALLA
DIANA?LORENTZ
--或采用以下方法
SQL>?SELECT?UPPER(?EMP1.FIRST_NAME?||?'?'?||??EMP1.LAST_NAME)?AS?NAME
??2??FROM?HR.EMPLOYEES?EMP1,HR.EMPLOYEES?EMP2
??3??WHERE?EMP1.MANAGER_ID?=?EMP2.EMPLOYEE_ID
??4??AND?EMP2.FIRST_NAME?=?'Alexander'?AND?EMP2.LAST_NAME?=??'Hunold';
?
NAME
----------------------------------------------
BRUCE?ERNST
DAVID?AUSTIN
VALLI?PATABALLA
DIANA?LORENTZ
/*--------6、哪些員工的工資高于他直接上司的工資，列出員工的名字和工資，上司的名字和工資。---------*/
SQL>?SELECT?E.FIRST_NAME,E.SALARY,M.FIRST_NAME,M.SALARY
??2??FROM?EMPLOYEES?E,EMPLOYEES?M
??3??WHERE?E.MANAGER_ID?=?M.EMPLOYEE_ID?AND?E.SALARY?>?M.SALARY;
?
FIRST_NAME???????????????SALARY?FIRST_NAME???????????????SALARY
--------------------?----------?--------------------?----------
Lisa???????????????????11500.00?Gerald?????????????????11000.00
Ellen??????????????????11000.00?Eleni??????????????????10500.00
--要是只列出員工的名字與工資的話，還可以這樣：
SQL>?SELECT?E.FIRST_NAME,E.SALARY
??2??FROM?EMPLOYEES?E?WHERE?E.SALARY?>
??3?(SELECT?M.SALARY?FROM?EMPLOYEES?M?
??4??WHERE?E.MANAGER_ID?=?M.EMPLOYEE_ID);
?
FIRST_NAME???????????????SALARY
--------------------?----------
Lisa???????????????????11500.00
Ellen??????????????????11000.00
/*--------7、哪些員工和Chen(LAST_NAME)同部門。---------*/
SQL>?SELECT?FIRST_NAME?FROM?EMPLOYEES
??2??WHERE?DEPARTMENT_ID?IN
??3??(SELECT?DEPARTMENT_ID?FROM?EMPLOYEES?WHERE?LAST_NAME?=?'Chen')
??4??AND?LAST_NAME?<>?'Chen';
?
FIRST_NAME
--------------------
Nancy
Daniel
Ismael
Jose?Manuel
Luis
--或者--
SQL>?SELECT?E1.FIRST_NAME?FROM?EMPLOYEES?E1,EMPLOYEES?E2
??2??WHERE?E1.DEPARTMENT_ID?=?E2.DEPARTMENT_ID
??3??AND?E2.LAST_NAME?=?'Chen'?AND?E1.LAST_NAME?<>?'Chen';
?
FIRST_NAME
--------------------
Nancy
Daniel
Ismael
Jose?Manuel
Luis
/*--------8、哪些員工跟De?Haan(LAST_NAME)做一樣職位。---------*/
SQL>?SELECT?FIRST_NAME?FROM?EMPLOYEES
??2??WHERE?JOB_ID?IN
??3??(SELECT?JOB_ID?FROM?EMPLOYEES
??4??WHERE?LAST_NAME?=?'De?Haan')
??5??AND?LAST_NAME?<>?'De?Haan';
?
FIRST_NAME
--------------------
Neena
--或者--
SQL>?SELECT?E1.FIRST_NAME?FROM?EMPLOYEES?E1,EMPLOYEES?E2
??2??WHERE?E1.JOB_ID?=?E2.JOB_ID?
??3??AND?E2.LAST_NAME?=?'De?Haan'?AND?E1.LAST_NAME?<>?'De?Haan';
?
FIRST_NAME
--------------------
Neena
/*--------9、哪些員工跟Hall(LAST_NAME)不在同一個部門。---------*/
SQL>?SELECT?FIRST_NAME?||?'?'?||?LAST_NAME?FROM?HR.EMPLOYEES
??2??WHERE?DEPARTMENT_ID?NOT?IN(
??3??SELECT?DEPARTMENT_ID?FROM?HR.EMPLOYEES
??4??WHERE?LAST_NAME?=?'Hall');
?
FIRST_NAME||''||LAST_NAME
----------------------------------------------
Steven?King
Neena?Kochhar
Lex?De?Haan
Alexander?Hunold
Bruce?Ernst
David?Austin
Valli?Pataballa
Diana?Lorentz
Nancy?Greenberg
--...初始有72條數據
--或者：
SQL>?SELECT?e1.FIRST_NAME?FROM?EMPLOYEES?e1,EMPLOYEES?e2
??2??WHERE?e1.DEPARTMENT_ID?=?e2.DEPARTMENT_ID(+)
??3??and?e2.LAST_NAME(+)?=?'Hall'
??4??and?e2.LAST_NAME?IS?NULL;
/*-------10、哪些員工跟William（FIRST_NAME）、Smith(LAST_NAME)做不一樣的職位。--------*/
SQL>?SELECT?FIRST_NAME?||?'?'?||?LAST_NAME?FROM?HR.EMPLOYEES
??2??WHERE?JOB_ID?<>?(SELECT?DISTINCT?JOB_ID?FROM?EMPLOYEES
??3??WHERE?FIRST_NAME?=?'William'?AND?LAST_NAME?=?'Smith');?
FIRST_NAME||''||LAST_NAME
----------------------------------------------
Steven?King
Neena?Kochhar
Lex?De?Haan
Alexander?Hunold
----...初始有77條數據
SQL>?SELECT?E.FIRST_NAME?||?'?'?||?E.LAST_NAME?AS?NAME,
??2??E.COMMISSION_PCT,D.DEPARTMENT_NAME,L.CITY
??3??FROM?HR.EMPLOYEES?E,HR.DEPARTMENTS?D,HR.LOCATIONS?L
??4??WHERE?E.DEPARTMENT_ID?=?D.DEPARTMENT_ID
??5??AND?D.LOCATION_ID?=?L.LOCATION_ID
??6??AND?E.COMMISSION_PCT?IS?NOT?NULL;
/*--------12、顯示Executive部門有哪些職位。---------*/
SQL>?SELECT?DISTINCT?E.JOB_ID?FROM?HR.EMPLOYEES?E,HR.DEPARTMENTS?D
??2??WHERE?D.DEPARTMENT_ID?=?E.DEPARTMENT_ID
??3??AND?D.DEPARTMENT_NAME?=?'Executive';
?
JOB_ID
----------
AD_PRES
AD_VP
/*--------13、整個公司中，最高工資和最低工資相差多少。---------*/
SQL>?SELECT?MAX(SALARY)?-?MIN(SALARY)?FROM?HR.EMPLOYEES;
?
MAX(SALARY)-MIN(SALARY)
-----------------------
??????????????????21900
/*--------14、提成大于0?的人數。---------*/
SQL>?SELECT?COUNT(*)?AS?提成大小0的人數?FROM?HR.EMPLOYEES
??2??WHERE?COMMISSION_PCT?>?0;
?
???????提成大小0的人數
---------------
?????????????35
--或者
SQL>?SELECT?COUNT(COMMISSION_PCT)?AS?提成大小0的人數??
??2???FROM?HR.EMPLOYEES
??3???WHERE?COMMISSION_PCT?>?0;
???????提成大小0的人數
---------------
?????????????35
/*--------15、顯示整個公司的最高工資、最低工資、工資總和、平均工資保留到整數位。---------*/
SQL>?SELECT?MAX(NVL(SALARY,0))?AS?最高工資,
??2???????????MIN(NVL(SALARY,0))?AS?最低工資,
??3???????????SUM(NVL(SALARY,0))?AS?工資總和,
??4???????????ROUND(AVG(NVL(SALARY,0)))?AS?平均工資
??5??FROM?HR.EMPLOYEES;
??????最高工資???????最低工資???????工資總和???????平均工資
??????----------????----------??????----------?????---------
??????24000??????????2100???????????698011?????????6523
/*--------16、整個公司有多少個領導。---------*/
SQL>?SELECT?COUNT(DISTINCT(MANAGER_ID))??FROM?HR.EMPLOYEES
???2??WHERE?MANAGER_ID?IS?NOT?NULL;
?
COUNT(DISTINCT(MANAGER_ID))
---------------------------
?????????????????????????18
/*--------17、列出在同一部門入職日期晚但工資高于其他同事的員工：
名字、工資、入職日期。---------*/
SQL>?SELECT?DISTINCT?E1.FIRST_NAME?||?'?'?||?E1.LAST_NAME?AS?姓名,
??2?????????E1.SALARY?AS?工資,E1.HIRE_DATE?AS?入職日期
??3??FROM?HR.EMPLOYEES?E1,HR.EMPLOYEES?E2
??4??WHERE?E1.DEPARTMENT_ID?=?E2.DEPARTMENT_ID
??5??AND?E1.HIRE_DATE?>?E2.HIRE_DATE
??6??AND?E1.SALARY?>?E2.SALARY
??7??ORDER?BY?工資?DESC;
姓名???????????????????????????????????????????????????工資?入職日期
----------------------------------------------?----------?-----------
John?Russell?????????????????????????????????????14000.00?1996-10-1
Karen?Partners???????????????????????????????????13500.00?1997-1-5
Alberto?Errazuriz????????????????????????????????12000.00?1997-3-10
Nancy?Greenberg??????????????????????????????????12000.00?1994-8-17
Lisa?Ozer????????????????????????????????????????11500.00?1997-3-11
Ellen?Abel???????????????????????????????????????11000.00?1996-5-11
Gerald?Cambrault?????????????????????????????????11000.00?1999-10-15
Clara?Vishney????????????????????????????????????10500.00?1997-11-11
Eleni?Zlotkey????????????????????????????????????10500.00?2000-1-29
Harrison?Bloom???????????????????????????????????10000.00?1998-3-23
Peter?Tucker?????????????????????????????????????10000.00?1997-1-30
Tayler?Fox????????????????????????????????????????9600.00?1998-1-24
Danielle?Greene???????????????????????????????????9500.00?1999-3-19
David?Bernstein???????????????????????????????????9500.00?1997-3-24
Peter?Hall????????????????????????????????????????9000.00?1997-8-20
Alyssa?Hutton?????????????????????????????????????8800.00?1997-3-19
Jonathon?Taylor???????????????????????????????????8600.00?1998-3-24
Adam?Fripp????????????????????????????????????????8200.00?1997-4-10
Christopher?Olsen?????????????????????????????????8000.00?1998-3-30
Jack?Livingston???????????????????????????????????8000.00?1998-4-23?
Matthew?Weiss?????????????????????????????????????8000.00?1996-7-18
Jose?Manuel?Urman?????????????????????????????????7800.00?1998-3-7
Nanette?Cambrault?????????????????????????????????7500.00?1998-12-9
William?Smith?????????????????????????????????????7400.00?1999-2-23
Elizabeth?Bates???????????????????????????????????7300.00?1999-3-24
Charles?Johnson???????????????????????????????????7211.00?2000-1-4
Mattea?Marvins????????????????????????????????????7200.00?2000-1-24
Shanta?Vollman????????????????????????????????????6500.00?1997-10-10
Kevin?Mourgos?????????????????????????????????????5800.00?1999-11-16
Nandita?Sarchand??????????????????????????????????4200.00?1996-1-27
Alexis?Bull???????????????????????????????????????4100.00?1997-2-20
Sarah?Bell????????????????????????????????????????4000.00?1996-2-4
Britney?Everett???????????????????????????????????3900.00?1997-3-3
Kelly?Chung???????????????????????????????????????3800.00?1997-6-14
Jennifer?Dilly????????????????????????????????????3600.00?1997-8-13
Julia?Dellinger???????????????????????????????????3400.00?1998-6-24
Laura?Bissot??????????????????????????????????????3300.00?1997-8-20
Julia?Nayer???????????????????????????????????????3200.00?1997-7-16
Samuel?McCain?????????????????????????????????????3200.00?1998-7-1
Stephen?Stiles????????????????????????????????????3200.00?1997-10-26
Winston?Taylor????????????????????????????????????3200.00?1998-1-24?
Alana?Walsh???????????????????????????????????????3100.00?1998-4-24
Jean?Fleaur???????????????????????????????????????3100.00?1998-2-23
Anthony?Cabrio????????????????????????????????????3000.00?1999-2-7
Kevin?Feeney??????????????????????????????????????3000.00?1998-5-23
Michael?Rogers????????????????????????????????????2900.00?1998-8-26
Shelli?Baida??????????????????????????????????????2900.00?1997-12-24
Timothy?Gates?????????????????????????????????????2900.00?1998-7-11
Girard?Geoni??????????????????????????????????????2800.00?2000-2-3
Mozhe?Atkinson????????????????????????????????????2800.00?1997-10-30
Vance?Jones???????????????????????????????????????2800.00?1999-3-17
Irene?Mikkilineni?????????????????????????????????2700.00?1998-9-28
John?Seo??????????????????????????????????????????2700.00?1998-2-12
Donald?OConnell???????????????????????????????????2600.00?1999-6-21
Douglas?Grant?????????????????????????????????????2600.00?2000-1-13
Randall?Matos?????????????????????????????????????2600.00?1998-3-15
Martha?Sullivan???????????????????????????????????2500.00?1999-6-21
Randall?Perkins???????????????????????????????????2500.00?1999-12-19
Ki?Gee????????????????????????????????????????????2400.00?1999-12-12
Hazel?Philtanker??????????????????????????????????2200.00?2000-2-6
Steven?Markle?????????????????????????????????????2200.00?2000-3-8
?
61?rows?selected
?
[推薦]ORACLE SQL：
經典查詢練手第三篇(不懂裝懂，永世飯桶！)
?
——通過知識共享樹立個人品牌。
?
?本文與大家共同討論與分享ORACLE SQL的一些常用經典查詢，歡迎大家補充，同時你認為有那些經典的也可分享出來。在本文中，對每一個問題，你要是認為有什么更好的解決方法也歡迎你及時提出。交流與分享才能共同進步嘛，感謝！
?接上兩篇:
[推薦]ORACLE SQL：經典查詢練手第一篇
[推薦]ORACLE SQL：經典查詢練手第二篇
本篇相對上兩篇來說難度有所增加，繼續努力，通過我為大家設立的這個系列，只要你對每一篇，每一個試題都實踐測試，認真練習。我相信你對常用、經典的SQL已能熟能生巧，信手拈來！
?
?
本文使用ORACLE自帶的人力資源（HR）實例數據，本文所用表結構如下：
HR.EMPLOYEES員工表結構如下：
?
HR.DEPARTMENTS表結構如下：
?
HR.REGIONS表結構如下：
?
SQL>?DESC?HR.REGIONS;Name????????Type?????????Nullable?Default?Comments?
-----------?------------?--------?-------?--------?
REGION_ID???NUMBER?????????????????????????????????
REGION_NAME?VARCHAR2(25)?Y
?
?
用SQL完成以下問題列表：
?
1.?讓SELECT?TO_CHAR(SALARY,'L99,999.99')?FROM?HR.EMPLOYEES?WHERE??ROWNUM?<?5?輸出結果的貨幣單位是￥和$。2.?列出前五位每個員工的名字，工資、漲薪后的的工資（漲幅為8%），以“元”為單位進行四舍五入。
3.?找出誰是最高領導，將名字按大寫形式顯示。
4.?找出First_Name?為David，Last_Name為Austin?的直接領導名字。
5.?First_Name?為Alexander，Last_Name為Hunold領導誰。（誰向David?報告）。
6.?哪些員工的工資高于他直接上司的工資，列出員工的名字和工資，上司的名字和工資。
7.?哪些員工和Chen(LAST_NAME)同部門。
8.?哪些員工跟De?Haan(LAST_NAME)做一樣職位。
9.?哪些員工跟Hall(LAST_NAME)不在同一個部門。
10.?哪些員工跟William（FIRST_NAME）、Smith(LAST_NAME)做不一樣的職位。
11.?顯示有提成的員工的信息：名字、提成、所在部門名稱、所在地區的名稱。
12.?顯示Executive部門有哪些職位。
13.?整個公司中，最高工資和最低工資相差多少。
14.?提成大于0?的人數。
15.?顯示整個公司的最高工資、最低工資、工資總和、平均工資保留到整數位。
16.?整個公司有多少個領導。
17.?列出在同一部門入職日期晚但工資高于其他同事的員工：名字、工資、入職日期。
?
?各試題解答如下（歡迎大家指出不同的方法或建議！）：
/*--------1、改變NLS_LANG?的值，讓SELECT?TO_CHAR(SALARY,'L99,999.99')?FROM?HR.EMPLOYEES?WHERE?ROWNUM?<?5?輸出結果的貨幣單位是￥和$。---------*/-----在沒有設置NLS_LANG的情況下：
SQL>?SELECT?TO_CHAR(SALARY,'L99,999.99')
???2??FROM?HR.EMPLOYEES
???3??WHERE?ROWNUM?<?5;
TO_CHAR(SALARY,'L99,999.99')
----------------------------
?????????￥24,000.00
?????????￥20,000.00
?????????￥20,000.00
??????????￥9,000.00
SQL>?SELECT?TO_CHAR(SALARY,'$99,999.99')
???2??FROM?HR.EMPLOYEES
???3??WHERE?ROWNUM?<?5;
?
TO_CHAR(SALARY,'$99,999.99')
----------------------------
?$24,000.00
?$20,000.00
?$20,000.00
??$9,000.00
/*--說明：對于'$99,999.99'格式符：
L：表示強制顯示當地貨幣符號
$:?表示顯示美元符號
9:?表示一個數字
0:?表示強制0顯示
.:?表示一個小數點
,:?表示一個千位分隔符
--------------*/
/*--------2、列出前五位每個員工的名字，工資、漲薪后的的工資（漲幅為8%），以“元”為單位進行四舍五入。---------*/
SQL>?SELECT?FIRST_NAME,SALARY,ROUND(SALARY?*?1.08)?FROM?HR.EMPLOYEES
???2??WHERE?ROWNUM?<=5;
?
FIRST_NAME???????????????SALARY?ROUND(SALARY*1.08)
--------------------?----------?------------------
Steven?????????????????24000.00??????????????25920
Neena??????????????????20000.00??????????????21600
Lex????????????????????20000.00??????????????21600
Alexander???????????????9000.00???????????????9720
Bruce???????????????????6000.00???????????????6480
/*--------3、找出誰是最高領導，將名字按大寫形式顯示。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||?'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?MANAGER_ID?IS?NULL;
?
NAME
----------------------------------------------
STEVEN?KING
/*--------4、找出David?的直接領導的名字。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?EMPLOYEE_ID?IN(
???4??SELECT?MANAGER_ID?FROM?HR.EMPLOYEES
???5??WHERE?FIRST_NAME?=?'David'?AND?LAST_NAME?=?'Austin');
?
NAME
----------------------------------------------
ALEXANDER?HUNOLD
--或采用以下方法
SQL>?SELECT?UPPER(?EMP1.FIRST_NAME?||'?'?||??EMP1.LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES?EMP1,HR.EMPLOYEES?EMP2
???3??WHERE?EMP1.EMPLOYEE_ID?=?EMP2.MANAGER_ID
???4??AND?EMP2.FIRST_NAME?=?'David'?AND?EMP2.LAST_NAME?=??'Austin';?
NAME
----------------------------------------------
ALEXANDER?HUNOLD
?
/*--------5、First_Name?為Alexander，LAST_NAME為Hunold領導誰。（誰向David?報告）。---------*/
SQL>?SELECT?UPPER(FIRST_NAME?||'?'?||?LAST_NAME)?AS?NAME
???2??FROM?HR.EMPLOYEES
???3??WHERE?MANAGER_ID?IN(
???4??SELECT?EMPLOYEE_ID?FROM?HR.EMPLOYEES
???5??WHERE?FIRST_NAME?=?'Alexander'?AND?LAST_NAME?=?'Hunold');
?
NAME
----------------------------------------------
BRUCE?ERNST
DAVID?AUSTIN
VALLI?PATABALLA
DIANA?LORENTZ
--或采用以下方法
SQL>?SELECT?UPPER(?EMP1.FIRST_NAME?||?'?'?||??EMP1.LAST_NAME)?AS?NAME
??2??FROM?HR.EMPLOYEES?EMP1,HR.EMPLOYEES?EMP2
??3??WHERE?EMP1.MANAGER_ID?=?EMP2.EMPLOYEE_ID
??4??AND?EMP2.FIRST_NAME?=?'Alexander'?AND?EMP2.LAST_NAME?=??'Hunold';
?
NAME
----------------------------------------------
BRUCE?ERNST
DAVID?AUSTIN
VALLI?PATABALLA
DIANA?LORENTZ
/*--------6、哪些員工的工資高于他直接上司的工資，列出員工的名字和工資，上司的名字和工資。---------*/
SQL>?SELECT?E.FIRST_NAME,E.SALARY,M.FIRST_NAME,M.SALARY
??2??FROM?EMPLOYEES?E,EMPLOYEES?M
??3??WHERE?E.MANAGER_ID?=?M.EMPLOYEE_ID?AND?E.SALARY?>?M.SALARY;
?
FIRST_NAME???????????????SALARY?FIRST_NAME???????????????SALARY
--------------------?----------?--------------------?----------
Lisa???????????????????11500.00?Gerald?????????????????11000.00
Ellen??????????????????11000.00?Eleni??????????????????10500.00
--要是只列出員工的名字與工資的話，還可以這樣：
SQL>?SELECT?E.FIRST_NAME,E.SALARY
??2??FROM?EMPLOYEES?E?WHERE?E.SALARY?>
??3?(SELECT?M.SALARY?FROM?EMPLOYEES?M?
??4??WHERE?E.MANAGER_ID?=?M.EMPLOYEE_ID);
?
FIRST_NAME???????????????SALARY
--------------------?----------
Lisa???????????????????11500.00
Ellen??????????????????11000.00
/*--------7、哪些員工和Chen(LAST_NAME)同部門。---------*/
SQL>?SELECT?FIRST_NAME?FROM?EMPLOYEES
??2??WHERE?DEPARTMENT_ID?IN
??3??(SELECT?DEPARTMENT_ID?FROM?EMPLOYEES?WHERE?LAST_NAME?=?'Chen')
??4??AND?LAST_NAME?<>?'Chen';
?
FIRST_NAME
--------------------
Nancy
Daniel
Ismael
Jose?Manuel
Luis
--或者--
SQL>?SELECT?E1.FIRST_NAME?FROM?EMPLOYEES?E1,EMPLOYEES?E2
??2??WHERE?E1.DEPARTMENT_ID?=?E2.DEPARTMENT_ID
??3??AND?E2.LAST_NAME?=?'Chen'?AND?E1.LAST_NAME?<>?'Chen';
?
FIRST_NAME
--------------------
Nancy
Daniel
Ismael
Jose?Manuel
Luis
/*--------8、哪些員工跟De?Haan(LAST_NAME)做一樣職位。---------*/
SQL>?SELECT?FIRST_NAME?FROM?EMPLOYEES
??2??WHERE?JOB_ID?IN
??3??(SELECT?JOB_ID?FROM?EMPLOYEES
??4??WHERE?LAST_NAME?=?'De?Haan')
??5??AND?LAST_NAME?<>?'De?Haan';
?
FIRST_NAME
--------------------
Neena
--或者--
SQL>?SELECT?E1.FIRST_NAME?FROM?EMPLOYEES?E1,EMPLOYEES?E2
??2??WHERE?E1.JOB_ID?=?E2.JOB_ID?
??3??AND?E2.LAST_NAME?=?'De?Haan'?AND?E1.LAST_NAME?<>?'De?Haan';
?
FIRST_NAME
--------------------
Neena
/*--------9、哪些員工跟Hall(LAST_NAME)不在同一個部門。---------*/
SQL>?SELECT?FIRST_NAME?||?'?'?||?LAST_NAME?FROM?HR.EMPLOYEES
??2??WHERE?DEPARTMENT_ID?NOT?IN(
??3??SELECT?DEPARTMENT_ID?FROM?HR.EMPLOYEES
??4??WHERE?LAST_NAME?=?'Hall');
?
FIRST_NAME||''||LAST_NAME
----------------------------------------------
Steven?King
Neena?Kochhar
Lex?De?Haan
Alexander?Hunold
Bruce?Ernst
David?Austin
Valli?Pataballa
Diana?Lorentz
Nancy?Greenberg
--...初始有72條數據
--或者：
SQL>?SELECT?e1.FIRST_NAME?FROM?EMPLOYEES?e1,EMPLOYEES?e2
??2??WHERE?e1.DEPARTMENT_ID?=?e2.DEPARTMENT_ID(+)
??3??and?e2.LAST_NAME(+)?=?'Hall'
??4??and?e2.LAST_NAME?IS?NULL;
/*-------10、哪些員工跟William（FIRST_NAME）、Smith(LAST_NAME)做不一樣的職位。--------*/
SQL>?SELECT?FIRST_NAME?||?'?'?||?LAST_NAME?FROM?HR.EMPLOYEES
??2??WHERE?JOB_ID?<>?(SELECT?DISTINCT?JOB_ID?FROM?EMPLOYEES
??3??WHERE?FIRST_NAME?=?'William'?AND?LAST_NAME?=?'Smith');?
FIRST_NAME||''||LAST_NAME
----------------------------------------------
Steven?King
Neena?Kochhar
Lex?De?Haan
Alexander?Hunold
----...初始有77條數據
?
?
?
/*--------11、顯示有提成的員工的信息：名字、提成、所在部門名稱、所在地區的名稱。---------*/SQL>?SELECT?E.FIRST_NAME?||?'?'?||?E.LAST_NAME?AS?NAME,
??2??E.COMMISSION_PCT,D.DEPARTMENT_NAME,L.CITY
??3??FROM?HR.EMPLOYEES?E,HR.DEPARTMENTS?D,HR.LOCATIONS?L
??4??WHERE?E.DEPARTMENT_ID?=?D.DEPARTMENT_ID
??5??AND?D.LOCATION_ID?=?L.LOCATION_ID
??6??AND?E.COMMISSION_PCT?IS?NOT?NULL;
/*--------12、顯示Executive部門有哪些職位。---------*/
SQL>?SELECT?DISTINCT?E.JOB_ID?FROM?HR.EMPLOYEES?E,HR.DEPARTMENTS?D
??2??WHERE?D.DEPARTMENT_ID?=?E.DEPARTMENT_ID
??3??AND?D.DEPARTMENT_NAME?=?'Executive';
?
JOB_ID
----------
AD_PRES
AD_VP
/*--------13、整個公司中，最高工資和最低工資相差多少。---------*/
SQL>?SELECT?MAX(SALARY)?-?MIN(SALARY)?FROM?HR.EMPLOYEES;
?
MAX(SALARY)-MIN(SALARY)
-----------------------
??????????????????21900
/*--------14、提成大于0?的人數。---------*/
SQL>?SELECT?COUNT(*)?AS?提成大小0的人數?FROM?HR.EMPLOYEES
??2??WHERE?COMMISSION_PCT?>?0;
?
???????提成大小0的人數
---------------
?????????????35
--或者
SQL>?SELECT?COUNT(COMMISSION_PCT)?AS?提成大小0的人數??
??2???FROM?HR.EMPLOYEES
??3???WHERE?COMMISSION_PCT?>?0;
???????提成大小0的人數
---------------
?????????????35
/*--------15、顯示整個公司的最高工資、最低工資、工資總和、平均工資保留到整數位。---------*/
SQL>?SELECT?MAX(NVL(SALARY,0))?AS?最高工資,
??2???????????MIN(NVL(SALARY,0))?AS?最低工資,
??3???????????SUM(NVL(SALARY,0))?AS?工資總和,
??4???????????ROUND(AVG(NVL(SALARY,0)))?AS?平均工資
??5??FROM?HR.EMPLOYEES;
??????最高工資???????最低工資???????工資總和???????平均工資
??????----------????----------??????----------?????---------
??????24000??????????2100???????????698011?????????6523
/*--------16、整個公司有多少個領導。---------*/
SQL>?SELECT?COUNT(DISTINCT(MANAGER_ID))??FROM?HR.EMPLOYEES
???2??WHERE?MANAGER_ID?IS?NOT?NULL;
?
COUNT(DISTINCT(MANAGER_ID))
---------------------------
?????????????????????????18
/*--------17、列出在同一部門入職日期晚但工資高于其他同事的員工：
名字、工資、入職日期。---------*/
SQL>?SELECT?DISTINCT?E1.FIRST_NAME?||?'?'?||?E1.LAST_NAME?AS?姓名,
??2?????????E1.SALARY?AS?工資,E1.HIRE_DATE?AS?入職日期
??3??FROM?HR.EMPLOYEES?E1,HR.EMPLOYEES?E2
??4??WHERE?E1.DEPARTMENT_ID?=?E2.DEPARTMENT_ID
??5??AND?E1.HIRE_DATE?>?E2.HIRE_DATE
??6??AND?E1.SALARY?>?E2.SALARY
??7??ORDER?BY?工資?DESC;
姓名???????????????????????????????????????????????????工資?入職日期
----------------------------------------------?----------?-----------
John?Russell?????????????????????????????????????14000.00?1996-10-1
Karen?Partners???????????????????????????????????13500.00?1997-1-5
Alberto?Errazuriz????????????????????????????????12000.00?1997-3-10
Nancy?Greenberg??????????????????????????????????12000.00?1994-8-17
Lisa?Ozer????????????????????????????????????????11500.00?1997-3-11
Ellen?Abel???????????????????????????????????????11000.00?1996-5-11
Gerald?Cambrault?????????????????????????????????11000.00?1999-10-15
Clara?Vishney????????????????????????????????????10500.00?1997-11-11
Eleni?Zlotkey????????????????????????????????????10500.00?2000-1-29
Harrison?Bloom???????????????????????????????????10000.00?1998-3-23
Peter?Tucker?????????????????????????????????????10000.00?1997-1-30
Tayler?Fox????????????????????????????????????????9600.00?1998-1-24
Danielle?Greene???????????????????????????????????9500.00?1999-3-19
David?Bernstein???????????????????????????????????9500.00?1997-3-24
Peter?Hall????????????????????????????????????????9000.00?1997-8-20
Alyssa?Hutton?????????????????????????????????????8800.00?1997-3-19
Jonathon?Taylor???????????????????????????????????8600.00?1998-3-24
Adam?Fripp????????????????????????????????????????8200.00?1997-4-10
Christopher?Olsen?????????????????????????????????8000.00?1998-3-30
Jack?Livingston???????????????????????????????????8000.00?1998-4-23?
Matthew?Weiss?????????????????????????????????????8000.00?1996-7-18
Jose?Manuel?Urman?????????????????????????????????7800.00?1998-3-7
Nanette?Cambrault?????????????????????????????????7500.00?1998-12-9
William?Smith?????????????????????????????????????7400.00?1999-2-23
Elizabeth?Bates???????????????????????????????????7300.00?1999-3-24
Charles?Johnson???????????????????????????????????7211.00?2000-1-4
Mattea?Marvins????????????????????????????????????7200.00?2000-1-24
Shanta?Vollman????????????????????????????????????6500.00?1997-10-10
Kevin?Mourgos?????????????????????????????????????5800.00?1999-11-16
Nandita?Sarchand??????????????????????????????????4200.00?1996-1-27
Alexis?Bull???????????????????????????????????????4100.00?1997-2-20
Sarah?Bell????????????????????????????????????????4000.00?1996-2-4
Britney?Everett???????????????????????????????????3900.00?1997-3-3
Kelly?Chung???????????????????????????????????????3800.00?1997-6-14
Jennifer?Dilly????????????????????????????????????3600.00?1997-8-13
Julia?Dellinger???????????????????????????????????3400.00?1998-6-24
Laura?Bissot??????????????????????????????????????3300.00?1997-8-20
Julia?Nayer???????????????????????????????????????3200.00?1997-7-16
Samuel?McCain?????????????????????????????????????3200.00?1998-7-1
Stephen?Stiles????????????????????????????????????3200.00?1997-10-26
Winston?Taylor????????????????????????????????????3200.00?1998-1-24?
Alana?Walsh???????????????????????????????????????3100.00?1998-4-24
Jean?Fleaur???????????????????????????????????????3100.00?1998-2-23
Anthony?Cabrio????????????????????????????????????3000.00?1999-2-7
Kevin?Feeney??????????????????????????????????????3000.00?1998-5-23
Michael?Rogers????????????????????????????????????2900.00?1998-8-26
Shelli?Baida??????????????????????????????????????2900.00?1997-12-24
Timothy?Gates?????????????????????????????????????2900.00?1998-7-11
Girard?Geoni??????????????????????????????????????2800.00?2000-2-3
Mozhe?Atkinson????????????????????????????????????2800.00?1997-10-30
Vance?Jones???????????????????????????????????????2800.00?1999-3-17
Irene?Mikkilineni?????????????????????????????????2700.00?1998-9-28
John?Seo??????????????????????????????????????????2700.00?1998-2-12
Donald?OConnell???????????????????????????????????2600.00?1999-6-21
Douglas?Grant?????????????????????????????????????2600.00?2000-1-13
Randall?Matos?????????????????????????????????????2600.00?1998-3-15
Martha?Sullivan???????????????????????????????????2500.00?1999-6-21
Randall?Perkins???????????????????????????????????2500.00?1999-12-19
Ki?Gee????????????????????????????????????????????2400.00?1999-12-12
Hazel?Philtanker??????????????????????????????????2200.00?2000-2-6
Steven?Markle?????????????????????????????????????2200.00?2000-3-8
?
61?rows?selected
?
posted on 2011-06-20 12:52 yonghu86 閱讀(...) 評論(...) 編輯 收藏轉載于:https://www.cnblogs.com/huyong/archive/2011/06/20/2085137.html
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