Sq l Queries

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Gopal Prasad Patel Queries compiled by Gopal Prasad Patel 'The following are the most twisted 150 queries………………………..i think it will be very much useful and handy in case 'when u can't solve these queries.....of course !! It took to bit of brain 'to solve these...(may be one or 2 or 3 are doubtful!! but will work...sometimes different answers will come up if u r working with oracle on a network and on a personal edition...... ....I welcome feedbacks..!! TABLES: 1) Table name - programmer name not null varchar2(8) name dob not null date date of birth doj not null date date of joining sex not null varchar2(1) male or female prof1 varchar2(8) known language 1 prof2 varchar2(8) known language 2 salary not null number(4) salary Entry eg: Gopal 21-apr-66 21-apr-92 m pascal basic 3200 2) Table name - software name not null varchar2(8) name title not null varchar2(20) developed project name dev_in not null varchar2(8) language developed scost number(7,2) software cost dcost number(5) development cost sold number(3) number of software sold Entry eg: [email protected] Page 1 of 63

Transcript of Sq l Queries

Page 1: Sq l Queries

Gopal Prasad Patel

Queries compiled by Gopal Prasad Patel

'The following are the most twisted 150 queries………………………..i think it will be very much useful and handy in case 'when u can't solve these queries.....of course !! It took to bit of brain'to solve these...(may be one or 2 or 3 are doubtful!! but will work...sometimes different answers will come up if u r working with oracle on a network and on a personal edition......

....I welcome feedbacks..!!

TABLES:

1) Table name - programmer

name not null varchar2(8) namedob not null date date of birthdoj not null date date of joiningsex not null varchar2(1) male or femaleprof1 varchar2(8) known language 1prof2 varchar2(8) known language 2salary not null number(4) salary

Entry eg:Gopal 21-apr-66 21-apr-92 m pascal basic 3200

2) Table name - software

name not null varchar2(8) nametitle not nullvarchar2(20) developed project namedev_in not null varchar2(8) language developedscost number(7,2) software costdcost number(5) development costsold number(3) number of software sold

Entry eg:Gopal parachutes basic 399.95 6000 43

3) Table name - studies

name not null varchar2(8) namesplace not null varchar2(9) studies placecourse not null varchar2(5) course studiedccost not null number(5) course cost

Entry example:Gopal Sabhari pgdca 4500devdutt bdps dcs 5000

QUERIES - I

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1) Find out the SELLING COST AVERAGE for the packages developed in PASCAL?2) Display the names and ages of all programmers.3) Display the names and ages of all the programmers4) What is the highest numbers of copies sold by a package?5) Display the names and date of birth of all the programmer born in JANUARY.6) Display lowest course fee.7) How many programmer has done PGDCA course.8) How much revenue has been earned through sales of packages in C.9) Display the details of software developed by Ramesh?10) How many programmers studied at SABHARI.11) Display the details of PACKAGES whose sales crossed the 20000 mark.12) Find out the number of copies which should be sold in order to recover the development cost of each package.13) What is the price of the costliest software developed in BASIC?14) Display the details of packages for which development cost has been recovered.15) How many packages were developed in dbase?16) How many programmers studies at paragathi?17) How many programmers paid 5000 to 10000 for their course?18) What is the average course fee?19) Display the details of programmers knowing c?20) How many programmers know either Cobol or Pascal?21) How many programmers don't know Pascal & C?22) How old is the oldest male programmers?23) What is the average age of female programmers?24) Calculate the experience in years for each programmers and display along with the names in descending order?25) Who are the programmers who celebrate their birthday during the current month?26) How many female programmers are there?27) What are the languages known by the male programmers?28) What is the Average salary?29) How many people draw 2000 to 4000?30) Display the details of those who don't know Clipper, Cobol or Pascal?31) How many Female programmers knowing C are above 24 years of age?32) Who are the programmers who will be celebrating their Birthday within a week?33 Display the details of those with less than a year's experience?34 Display the details of those who will be completing 2 years of service this year?35 Calculate the amount to be recovered for those packages whose development cost has not been recovered?36)ist the packages which have not been sold so far?37) Find out the cost of the software developed by Mary?38) Display the institutes names from the studies table without duplicates?39) How many different courses are mentioned in the studies table?40) Display the names of the programmers whose names contain 2 occurrences of the letter A?41) Display the names of programmers whose names contain unto 5 characters?42) How many female programmers knowing COBOL have more than 2 years experience?43) What is the length of the shortest name in the programmer table?44) What is the average development cost of a package developed in COBOL?45) Display the name,sex,dob(DD/MM/YY format), doj for all the programmers without using conversion function?46) Who are the programmers who were born on the last day of the month?47) What is the amount paid in salaries of the male programmers who do not know Cobol?48) Display the title, scost, dcost and difference between scost and dcost in descending order of difference?

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49) Display the name, dob, doj of those month of birth and month of joining are same?50) Display the names of the packages whose names contain more than 1 word?

QUERIES - II

1) Display THE NUMBER OF packages developed in EACH language.2) Display THE NUMBER OF packages developed by EACH person.3) Display THE NUMBER OF male and female programmer.4) Display THE COSTLIEST packages and HIGEST selling developed in EACH language.5) Display THE NUMBER OF people BORN in EACH YEAR.6) Display THE NUMBER OF people JOINED in EACH YEAR.7) Display THE NUMBER OF people BORN in EACH MONTH.8) Display THE NUMBER OF people JOINED in EACH MONTH.9) Display the language wise COUNTS of prof1.10) Display the language wise COUNTS of prof2.11) Display THE NUMBER OF people in EACH salary group.12) Display THE NUMBER OF people who studied in EACH institute.13) Display THE NUMBER OF people who studied in EACH course.14) Display the TOTAL development COST of the packages developed in EACH language.15) Display the selling cost of the package developed in EACH language.16) Display the cost of the package developed by EACH programmer.17) Display the sales values of the package developed in EACH programmer.18) Display the NUMBER of packages developed by EACH programmer.19) Display the sales COST of packages developed by EACH programmer language wise.20) Display EACH programmers name, costliest package and cheapest packages developed by Him/Her.21) Display EACH language name with AVERAGE development cost, AVERAGE cost, selling cost and AVERAGE price per copy.22) Display EACH institute name with NUMBER of courses, AVERAGE cost per course.23) Display EACH institute name with NUMBER of students. 24) Display names of male and female programmers. 25) Display the programmer's name and their packages. 26) Display the NUMBER of packages in EACH language.27) Display the NUMBER of packages in EACH language for which development cost is less than 1000.28) Display the AVERAGE difference BETWEEN scost and dcost for EACH language.29) Display the TOTAL scost, dcsot and amount TOBE recovered for EACH programmer for whose dcost HAS NOT YET BEEN recovered.30) Display highest, lowest and average salaries for THOSE earning MORE than 2000.

QUERIES - III

1) Who is the highest paid C programmer?2) Who is the highest paid female cobol programmer?3) Display the name of the HIGEST paid programmer for EACH language (prof1)4) Who is the LEAST experienced programmer?5) Who is the MOST experienced programmer?6) Which language is known by ONLY ONE programmer?7) Who is the YONGEST programmer knowing DBASE?8) Which institute has MOST NUMBER of students?

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9) Who is the above programmer?10) Which female programmer earns MORE than 3000/- but DOES NOT know C, C++, Oracle or Dbase?11) Which is the COSTLIEST course?12) Which course has been done by MOST of the students?13) Display name of the institute and course Which has below AVERAGE course fee?14) Which institute conducts COSTLIEST course?15) Which course has below AVERAGE number of students?16) Which institute conducts the above course?17) Display names of the course WHOSE fees are within 1000(+ or -) of the AVERAGE fee.18) Which package has the HIGEST development cost?19) Which package has the LOWEST selling cost?20) Who developed the package, which has sold the LEAST number of copies?21) Which language was used to develop the package WHICH has the HIGEST sales amount?22) How many copies of the package that has the LEAST DIFFRENCE between development and selling cost were sold?23) Which is the COSTLIEAST package developed in PASCAL?24) Which language was used to develop the MOST NUMBER of package?25) Which programmer has developed the HIGEST NUMBER of package?26) Who is the author of the COSTLIEST package?27) Display names of packages WHICH have been sold LESS THAN the AVERAGE number of copies?28) Who are the female programmers earning MORE than the HIGEST paid male programmers?29) Which language has been stated as prof1 by MOST of the programmers?30) Who are the authors of packages, WHICH have recovered MORE THAN double the development cost?31) Display programmer names and CHEAPEST package developed by them in EACH language?32) Who is the YOUNGEST male programmer born in 1965?33) Display language used by EACH programmer to develop the HIGEST selling and LOWEST selling package.34) Who is the OLDEST female programmer WHO joined in 199235) In WHICH year where the MOST NUMBER of programmer born?36) In WHICH month did MOST NUMBRER of programmer join?37) In WHICH language are MOST of the programmer's proficient?38) Who are the male programmers earning BELOW the AVERAGE salary of female programmers?

QUERY - IV

1) Display the details of THOSE WHO are drawing the same salary.2) Display the details of software developed by male programmers earing MORE than 3000.3) Display details of packages developed in PASCAL by female programmers.4) Display the details of these programmer WHO joined BEFORE 1990. 5)Display details of software developed in C by female programmers of PRAGATHI.6) Display NUMBER of packages NUMBER of copies sold and sales value of EACH programmer Institute-wise.7) Display details of software developed in DBASE by male programmers WHO belong to the institute on which MOST NUMBER OF programmers studies.8) Display the details of the software that was developed by male programmers born BEFORE 1965 and female programmers born AFTER 1975.9) Display the details of the software that was developed in the language that is NOT the programmers first proficiency.

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10) Display details of software that was developed in the language which is NITHER first NOR second proficiency of the programmer.11) Display details of software developed by male students of SABHARI.12) Display the names of programmers WHO HAVE NOT developed any package.13) What is the total cost of the software developed by the programmers by APPLE?14) Who are the programmers WHO JOINED in the same day?15) Who are the programmers WHO HAVE THE SAME PROF2?16) Display the total sales values of software, institutes-wise.17) In which institutes did the person who developed the COSTLIEST package study?18) Which language listed in prof1 and prof2 HAS NOT BEEN used to develop any package? 19) How much does the person WHO developed the HIGHEST selling package earn and WHAT course did he/she undergo?20) How many months will it take for each programmer to recover the cost of the course underwent?21) Which is the COSTLIEST package developed by a person with under 3 years expenence?22) What is the AVERAGE salary for those WHOSE software's sales value is more than 50,000?23) How many packages were developed by the students WHO studied in the institute that Charge the LOWEST course fee?24) How many packages were developed by the person WHO developed the CHEAPEST package. Where did he\she study?25) How many packages were developed by female programmers earning MORE than the HIGHEST paid male programmer?26) How many packages were developed by the MOST experienced programmers from BDPS.27) List the programmers (from software table) and institutes they studied, including those WHO DIDN'T develop any package.28) List each profit with the number of programmers having that prof1 and the number of packages developed in that prof1.29) List programmer names (from programmer table) and number of packages EACH developed. 30) List all the details of programmers who has done a course at S.S.I.L.

QUERIES - I

1) Find out the SELLING COST AVERAGE for the packages developed in PASCAL?

SELECT AVG(SCOST) FROM SOFTWARE WHERE DEV_IN LIKE 'PASCAL'

Output:AVG(SCOST)---------- 2362.48

2) Display the names and ages of all programmers.

SELECT NAME AS NAME,FLOOR((SYSDATE-DOB)/365) AS AGE FROM PROGRAMMER

OR

SELECT 100 + MONTHS_BETWEEN(SYSDATE,DOB)/12 FROM PROGRAMMER;

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Output:NAME AGE-------- ----------ANAND 34ALTAF 36JAGADESH 30JULIANA 32KAMALA 32MARY 30NELSON 35PATRICK 35QADIR 35RAMESH 33REBECCA 33REMITHA 30REVATHI 31VIJAYA 35

3) Display the names and ages of all the programmers.

SELECT NAME FROM STUDIES WHERE COURSE LIKE 'DAP'

Output:NAME--------NELSONREVATHI

4) What is the highest numbers of copies sold by a package?

SELECT MAX(SOLD) FROM SOFTWARE

Output: SOLD---------- 114

5) Display the names and date of birth of all the programmer born in JANUARY.

SELECT DOB,NAME FROM PROGRAMMER WHERE TO_CHAR(DOB,'MON') LIKE 'JAN'

Output:DOB NAME--------- --------

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31-JAN-68 JULIANA01-JAN-67 REBECCA

6) Display lowest course fee.

SELECT MIN(CCOST) FROM STUDIES

Output:MIN(CCOST)---------- 3500

7) How many programmer has done PGDCA course.

SELECT COUNT(NAME) FROM STUDIES WHERE COURSE LIKE 'PGDCA'

Output:COUNT(NAME)----------- 3

8) How much revenue has been earned through sales of packages in C.

SELECT SUM(SOLD*SCOST) FROM SOFTWARE WHERE DEV_IN LIKE 'C'

Output:SUM(SOLD*SCOST)--------------- 1137759) Display the details of software developed by Ramesh?

SELECT * FROM SOFTWARE WHERE NAME='RAMESH'

Output:NAME TITLE DEV_IN SCOST DCOST SOLD-------- -------------------- -------- ---------- ---------- ----------RAMESH HOTEL MANAGEMENT DBASE 12000 35000 4RAMESH DEAD LEE PASCAL 99.95 4500 73

10) How many programmers studied at SABHARI.

SELECT COUNT(NAME) AS NOPROGRAMMERS FROM STUDIES WHERE SPLACE='SABHARI'

Output:NOPROGRAMMERS-------------

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4

11) Display the details of PACKAGES whose sales crossed the 20000 mark.

SELECT * FROM SOFTWARE WHERE (SOLD*SCOST)>20000

Output:NAME TITLE DEV_IN SCOST DCOST SOLD-------- -------------------- -------- ---------- ---------- ----------ANAND VIDEO TITLING PACK PASCAL 7500 16000 9JAGADESH SHARES MANAGEMENT ORACLE 3000 12000 14KAMALA PAYROLL PACKAGE DBASE 9000 20000 7MARY FINANCILA ACC S/W ORACLE 18000 85000 4MARY CODE GENERATOR C 4500 20000 23MARY READ ME C++ 300 1200 84QADIR BOMBS AWAY ASSEMBLY 499.95 530 114QADIR VACCINES C 1900 3400 21RAMESH HOTEL MANAGEMENT DBASE 12000 35000 4REMITHA PC UTILITIES C 725 5000 51REVATHI QUIZ MASTER BASIC 3200 2100 15

12) Find out the number of copies which should be sold in order to recover the development cost of each package.

SELECT ROUND(DCOST/SCOST) FROM SOFTWARE WHERE SCOST*SOLD<DCOST

Output:ROUND(DCOST/SCOST)------------------ 1 5 68

13) What is the price of the costliest software developed in BASIC?

SELECT MAX(SCOST)FROM SOFTWARE WHERE DEV_IN LIKE 'BASIC'

Output:MAX(SCOST)---------- 3200

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14) Display the details of packages for which development cost has been recovered.

SELECT * FROM SOFTWARE WHERE (SOLD*SCOST)>DCOST

Output:NAME TITLE DEV_IN SCOST DCOST SOLD-------- -------------------- -------- ---------- ---------- ----------ANAND PARACHUTES BASIC 399.95 6000 43ANAND VIDEO TITLING PACK PASCAL 7500 16000 9JAGADESH SERIAL LINK UTILITY JAVA 800 7500 10JAGADESH SHARES MANAGEMENT ORACLE 3000 12000 14KAMALA PAYROLL PACKAGE DBASE 9000 20000 7MARY CODE GENERATOR C 4500 20000 23MARY READ ME C++ 300 1200 84PATRICK GRAPHIC EDITOR PASCAL 750 5000 11QADIR BOMBS AWAY ASSEMBLY 499.95 530 114QADIR VACCINES C 1900 3400 21RAMESH HOTEL MANAGEMENT DBASE 12000 35000 4RAMESH DEAD LEE PASCAL 99.95 4500 73REMITHA PC UTILITIES C 725 5000 51REMITHA TSR HELP PACKAGE ASSEMBLY 2500 6000 6REVATHI QUIZ MASTER BASIC 3200 2100 15VIJAYA ISK EDITOR C 900 700 6

15) How many packages were developed in dbase?

SELECT COUNT(TITLE) AS TOTAL FROM SOFTWARE WHERE DEV_IN='DBASE'

Output: TOTAL---------- 2

16) How many programmers studies at paragathi?

SELECT COUNT(NAME)FROM STUDIES WHERE SPLACE='PRAGATHI'

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Output:COUNT(NAME)----------- 317) How many programmers paid 5000 to 10000 for their course?

SELECT COUNT(NAME) AS NOOFPROGRAMMERS FROM STUDIES WHERE CCOST>=5000 AND CCOST<=10000

Output:NOOFPROGRAMMERS--------------- 6

18) What is the average course fee?

SELECT AVG(CCOST) AS AVERAGECOST FROM STUDIES

Output:AVERAGE_COST------------ 10471.429

19) Display the details of programmers knowing c?

SELECT * FROM PROGRAMMER WHERE PROF1='C' OR PROF2='C'

Output:NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- ----------KAMALA 30-OCT-68 02-JAN-92 F C DBASE 2900QADIR 31-AUG-65 21-APR-93 M ASSEMBLY C 3000REMITHA 19-APR-70 20-APR-93 F C ASSEMBLY 3600VIJAYA 14-DEC-65 02-MAY-92 F FOXPRO C 3500

20) How many programmers know either Cobol or Pascal?

SELECT COUNT(NAME) AS PROGRAMMERS FROM PROGRAMMER WHERE PROF1='COBOL' OR PROF1='PASCAL' OR PROF2='COBOL'

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OR PROF2='PASCAL'

Output:PROGRAMMERS----------- 8

21) How many programmers don't know Pascal & C?

SELECT COUNT(NAME) AS PROGRAMMER FROM PROGRAMMER WHERE PROF1!='C' AND PROF1!='PASCAL' AND PROF2!='C' AND PROF2!='PASCAL'

Output:PROGRAMMER---------- 6

22) How old is the oldest male programmers?

SELECT MAX(FLOOR((SYSDATE - DOB)/365)) AS OLDESTMALEPROGRAMMERAGE FROM PROGRAMMER

Output:OLDESTMALEPROGRAMMERAGE----------------------- 36

23) What is the average age of female programmers?

SELECT FLOOR(AVG(FLOOR((SYSDATE - DOB)/365))) AS AVERAGEFEMALEAGE FROM PROGRAMMER

Output:AVERAGEFEMALEAGE---------------- 32

24) Calculate the experience in years for each programmers and display along with the names in descending order?

SELECT NAME AS PRNAME,FLOOR((SYSDATE - DOJ)/365) AS EXPERIENCE FROM PROGRAMMER ORDER BY NAME DESC

Output:PR_NAME EXPERIENCE

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-------- ----------VIJAYA 8REVATHI 9REMITHA 7REBECCA 10RAMESH 10QADIR 7PATRICK 10NELSON 11MARY 10KAMALA 9JULIANA 10JAGADISH 6ANAND 8ALTAF 10

25) Who are the programmers who celebrate their birthday during the current month?

SELECT NAME FROM PROGRAMMER WHERE TO_CHAR(DOB,'MM')=TO_CHAR(SYSDATE,'MM')

Output:NAME--------ANANDREMITHA

26) How many female programmers are there?

SELECT COUNT(NAME) AS NOFPROG FROM PROGRAMMER WHERE SEX='F'

Output:NO_OF_FEMALE_PROGRAMMERS------------------------ 7

27) What are the languages known by the male programmers?

SELECT DISTINCT PROF1 AS LANGUAGES FROM PROGRAMMER WHERE SEX='M' UNION SELECT DISTINCT PROF2 AS LANGUAGES FROM PROGRAMMER WHERE SEX='M'

Output:

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LANGUAGE--------ASSEMBLYBASICCCLIPPERCOBOLDBASEJAVAORACLEPASCAL

28) What is the Average salary?

SELECT AVG(SALARY) AS AVGSAL FROM PROGRAMMER

Output:AVERAGE_SALARY-------------- 3235.714329) How many people draw 2000 to 4000?

SELECT NAME AS PRNAME FROM PROGRAMMER WHERE SALARY>= 2000 OR SALARY <=4000

Output:NAME--------ANANDALTAFJULIANAKAMALANELSONPATRICKQADIRRAMESHREBECCAREMITHAREVATHIVIJAYA

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30) Display the details of those who don't know Clipper, Cobol or Pascal?

SELECT * FROM PROGRAMMER WHERE PROF1 NOT IN ('CLIPPER','COBOL','PASCAL')AND PROF2 NOT IN ('CLIPPER','COBOL','PASCAL')

Output:NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- ----------JAGADESH 06-OCT-70 04-OCT-94 M ORACLE JAVA 4100KAMALA 30-OCT-68 02-JAN-92 F C DBASE 2900MARY 24-JUN-70 01-FEB-91 F C++ ORACLE 4500QADIR 31-AUG-65 21-APR-93 M ASSEMBLY C 3000REMITHA 19-APR-70 20-APR-93 F C ASSEMBLY 3600VIJAYA 14-DEC-65 02-MAY-92 F FOXPRO C 3500

31) How many Female programmers knowing C are above 24 years of age?

SELECT COUNT(NAME) AS NOOFFPRGFROM PROGRAMMERWHERE SEX='F'AND (PROF1='C' OR PROF2='C')AND ((SYSDATE-DOB)/365) > 24

Output: NOOFFPRG---------- 3

32) Who are the programmers who will be celebrating their Birthday within a week?

SELECT NAME FROM PROGRAMMER WHERE TO_CHAR(DOB,'WW') LIKE TO_CHAR(SYSDATE,'WW')

OR

select * from programmer whereto_char(dob,'dd') between to_char(sysdate,'dd') andto_char(next_day(sysdate,(to_char(sysdate,'day'))),'dd') andto_char(dob,'mon') between to_char(sysdate,'mon') andto_char(next_day(sysdate,(to_char(sysdate,'day'))),'mon')

Output:no rows selected

33 Display the details of those with less than a year's experience?

SELECT * FROM PROGRAMMER WHERE FLOOR((SYSDATE - DOJ)/365)<1

Output:

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NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- --------ANAND 21-APR-66 21-APR-92 M PASCAL BASIC 3200ALTAF 02-JUL-64 13-NOV-90 M CLIPPER COBOL 2800JAGADISH 06-OCT-70 04-OCT-94 M ORACLE JAVA 4100JULIANA 31-JAN-68 21-APR-90 F COBOL DBASE 3000KAMALA 30-OCT-68 02-JAN-92 F C DBASE 2900MARY 24-JUN-70 01-FEB-91 F C++ ORACLE 4500NELSON 11-SEP-65 11-OCT-89 M COBOL DBASE 2500PATRICK 19-NOV-65 21-APR-90 M PASCAL CLIPPER 2800QADIR 31-AUG-65 21-APR-93 M ASSEMBLY C 3000RAMESH 03-MAY-67 28-FEB-91 M PASCAL DBASE 3200REBECCA 01-JAN-67 01-DEC-90 F BASIC COBOL 2500REMITHA 19-APR-70 20-APR-93 F C ASSEMBLY 3600REVATHI 02-DEC-69 02-JAN-92 F PASCAL BASIC 3700VIJAYA 14-DEC-65 02-MAY-92 F FOXPRO C 3500

14 rows selected.

34 Display the details of those who will be completing 2 years of service this year?

SELECT NAME AS PRNAME FROM PROGRAMMER WHERE FLOOR((SYSDATE-DOJ)/365)=2;

OR

select * from programmer where(to_number(to_char(sysdate,'yyyy'))-to_number(to_char(doj,'yyyy')))=2;

OR

SELECT * FROM PROGRAMMER WHERE(100 + MONTHS_BETWEEN('31-DEC-00',DOJ)/12)>=2 AND(100 + MONTHS_BETWEEN(SYSDATE,DOJ)/12) != 2;

Output:no rows selected

35 Calculate the amount to be recovered for those packages whose development cost has not been recovered?

SELECT (DCOST-(SCOST*SOLD)),TITLE FROM SOFTWARE WHERE (SCOST*SOLD)<DCOST

Output:(DCOST-(SCOST*SOLD)) TITLE-------------------- -------------------- 3500 INVENTORY CONTROL 13000 FINANCILA ACC S/W 72800 HOTEL MANAGEMENT

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36)ist the packages which have not been sold so far?

SELECT TITLE AS SOFTNAME FROM SOFTWARE WHERE SOLD=0

Output:SOFTNAME--------------------INVENTORY CONTROL

37) Find out the cost of the software developed by Mary?

SELECT TITLE AS SOFTNAME,SCOST AS SOFTCOST FROM SOFTWARE WHERE NAME='MARY'

Output:SOFTNAME SOFTCOST-------------------- ----------FINANCILA ACC S/W 18000CODE GENERATOR 4500READ ME 300

38) Display the institutes names from the studies table without duplicates?

SELECT DISTINCT SPLACE FROM STUDIES

Output:SPLACE---------APPLEBDPSBITSBRILLIANTCCITPRAGATHIS.S.I.LSABHARI

39) How many different courses are mentioned in the studies table?

SELECT DISTINCT COURSE AS COURSES FROM STUDIES

Output:COURS-----DAPDCADCA/P

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DCAPDCPDCSHDCPPGDCA

40) Display the names of the programmers whose names contain 2 occurrences of the letter A?

SELECT NAME FROM PROGRAMMER WHERE NAME LIKE '%A%A%'

Output:NAME--------ANANDALTAFJAGADESHJULIANAKAMALAVIJAYA

41) Display the names of programmers whose names contain unto 5 characters?

SELECT NAME FROM PROGRAMMER WHERE LENGTH(NAME)=5

Output:NAME--------ANANDALTAFQADIR

42) How many female programmers knowing COBOL have more than 2 years experience?

SELECT NAME AS PRNAME FROM PROGRAMMER WHERE FLOOR((SYSDATE-DOJ)/365)>2 AND SEX='F' AND (PROF1='COBOL' OR PROF2='COBOL')

Output:PRNAME--------JULIANAREBECCA

43) What is the length of the shortest name in the programmer table?

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SELECT MIN(LENGTH(NAME)) AS SHORTNAME FROM PROGRAMMER

Output: SHORTNAME---------- 4

44) What is the average development cost of a package developed in COBOL?

SELECT AVG(DCOST) AS AVGCOST FROM SOFTWARE WHERE DEV_IN='COBOL'

Output: AVGCOST---------- 3500

45) Display the name,sex,dob(DD/MM/YY format), doj for all the programmers without using conversion function?

SELECT NAME AS PRNAME, SEX AS SEX, SUBSTR(DOB,1,2)||'/'||SUBSTR(DOB,4,3)||'/'||SUBSTR(DOB,8,2) AS DATEOFBIRTH, SUBSTR(DOJ,1,2)||'/'||SUBSTR(DOJ,4,3)||'/'||SUBSTR(DOJ,8,2) AS DATEOFJOIN FROM PROGRAMMER

Output:PRNAME S DATEOFBIR DATEOFJOI-------- - --------- ---------ANAND M 21/APR/66 21/APR/92ALTAF M 02/JUL/64 13/NOV/90JAGADESH M 06/OCT/70 04/OCT/94JULIANA F 31/JAN/68 21/APR/90KAMALA F 30/OCT/68 02/JAN/92MARY F 24/JUN/70 01/FEB/91NELSON M 11/SEP/65 11/OCT/89PATRICK M 19/NOV/65 21/APR/90QADIR M 31/AUG/65 21/APR/93RAMESH M 03/MAY/67 28/FEB/91REBECCA F 01/JAN/67 01/DEC/90REMITHA F 19/APR/70 20/APR/93REVATHI F 02/DEC/69 02/JAN/92VIJAYA F 14/DEC/65 02/MAY/92

46) Who are the programmers who were born on the last day of the month?

SELECT NAME AS PRNAME FROM PROGRAMMER WHERE LAST_DAY(DOB) LIKE DOB

Output:

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PRNAME--------JULIANAQADIR

47) What is the amount paid in salaries of the male programmers who do not know Cobol?

SELECT SALARY AS SALOFPR FROM PROGRAMMER WHERE SEX='M' AND (PROF1!='COBOL' OR PROF2!='COBOL)

Output: SALOFPR---------- 3200 2800 4100 2500 2800 3000 3200

48) Display the title, scost, dcost and difference between scost and dcost in descending order of difference?

SELECT TITLE AS SOFTNAME,SCOST AS SOFTCOST,DCOST AS DEVCOST,DCOST - SCOST DIFF FROM SOFTWARE ORDER BY 4 DESC

Output:SOFTNAME SOFTCOST DEVCOST DIFF-------------------- ---------- ---------- ----------HOTEL MANAGEMENT 1100 75000 73900FINANCILA ACC S/W 18000 85000 67000HOTEL MANAGEMENT 12000 35000 23000CODE GENERATOR 4500 20000 15500PAYROLL PACKAGE 9000 20000 11000SHARES MANAGEMENT 3000 12000 9000VIDEO TITLING PACK 7500 16000 8500SERIAL LINK UTILITY 800 7500 6700PARACHUTES 399.95 6000 5600.05DEAD LEE 99.95 4500 4400.05PC UTILITIES 725 5000 4275GRAPHIC EDITOR 750 5000 4250TSR HELP PACKAGE 2500 6000 3500VACCINES 1900 3400 1500

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READ ME 300 1200 900INVENTORY CONTROL 3000 3500 500BOMBS AWAY 499.95 530 30.05ISK EDITOR 900 700 -200QUIZ MASTER 3200 2100 -1100

49) Display the name, dob, doj of those month of birth and month of joining are same?

SELECT NAME AS PRNAME FROM PROGRAMMER WHERE TO_CHAR(DOB,'MM')=TO_CHAR(DOJ,'MM')

Output:PRNAME--------ANANDJAGADESHREMITHA

50) Display the names of the packages whose names contain more than 1 word?

SELECT TITLE AS PACKAGES FROM SOFTWARE WHERE TITLE LIKE '% %'

Output:PACKAGES--------------------VIDEO TITLING PACKSERIAL LINK UTILITYSHARES MANAGEMENTINVENTORY CONTROLPAYROLL PACKAGEFINANCILA ACC S/WCODE GENERATORREAD MEGRAPHIC EDITORBOMBS AWAYHOTEL MANAGEMENTDEAD LEEPC UTILITIESTSR HELP PACKAGEHOTEL MANAGEMENTQUIZ MASTERISK EDITOR

QUERIES - II

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1) Display THE NUMBER OF packages developed in EACH language.

SELECT DEV_IN AS LANGUAGE,COUNT(TITLE) AS NOOFPACK FROM SOFTWARE GROUP BY DEV_IN

Output:LANGUAGE NOOFPACK-------- ----------ASSEMBLY 2BASIC 2C 4C++ 1COBOL 1DBASE 2JAVA 1ORACLE 2PASCAL 4

2) Display THE NUMBER OF packages developed by EACH person.

SELECT NAME AS PRNAME,COUNT(TITLE)AS NOOFPACK FROM SOFTWARE GROUP BY NAME

Output:PRNAME NOOFPACK-------- ----------ANAND 2JAGADESH 2JULIANA 1KAMALA 1MARY 3PATRICK 1QADIR 2RAMESH 2REMITHA 2REVATHI 2VIJAYA 1

3) Display THE NUMBER OF male and female programmer.

SELECT SEX,COUNT(NAME) AS NAMEFROM PROGRAMMERGROUP BY SEXOutput:S NAME- ---------F 7M 7

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4) Display THE COSTLIEST packages and HIGEST selling developed in EACH language.

SELECT DEV_IN AS LANGAUGE,MAX(SCOST) AS COSTPACK,MAX(SOLD) AS HIGHPACKSFROM SOFTWARE GROUP BY DEV_IN

Output:LANGAUGE COSTPACK HIGHPACK-------- ---------- ----------ASSEMBLY 2500 114BASIC 3200 43C 4500 51C++ 300 84COBOL 3000 0DBASE 12000 7JAVA 800 10ORACLE 18000 14PASCAL 7500 73

5) Display THE NUMBER OF people BORN in EACH YEAR.

SELECT TO_CHAR(DOB,'YY') AS YEAR,COUNT(NAME) AS PRNO FROM PROGRAMMER GROUP BY TO_CHAR(DOB,'YY')

Output:YE PRNO-- ----------64 165 466 167 268 269 170 3

6) Display THE NUMBER OF people JOINED in EACH YEAR.

SELECT TO_CHAR(DOJ,'YY') AS YEAR,COUNT(NAME) AS PRNO FROM PROGRAMMER GROUP BY TO_CHAR(DOJ,'YY')

Output:YE PRNO-- ----------89 1

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90 491 292 493 294 1

7) Display THE NUMBER OF people BORN in EACH MONTH.

SELECT SUBSTR(DOB,4,3) AS MONTHOFBIRTH,COUNT(NAME) AS PRNO FROM PROGRAMMER GROUP BY SUBSTR(DOB,4,3)

Output:MON PRNO--- ----------APR 2AUG 1DEC 2JAN 2JUL 1JUN 1MAY 1NOV 1OCT 2SEP 1

8) Display THE NUMBER OF people JOINED in EACH MONTH.

SELECT SUBSTR(DOJ,4,3) AS MONTHOFJOIN,COUNT(NAME) AS PRNO FROM PROGRAMMER GROUP BY SUBSTR(DOJ,4,3)

Output:MON PRNO--- ----------APR 5DEC 1FEB 2JAN 2MAY 1NOV 1OCT 2

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9) Display the language wise COUNTS of prof1.

SELECT PROF1 AS LANGUAGE, COUNT(PROF1) AS PROF1COUNT FROM PROGRAMMER GROUP BY PROF1

Output:LANGUAGE PROF1COUNT-------- ----------Assembly 1Basic 1C 2C++ 1Clipper 1Cobol 2Foxpro 1Oracle 1Pascal 4

10) Display the language wise COUNTS of prof2.

SELECT PROF2 AS LANGUAGE, COUNT(PROF2) AS PROF2COUNT FROM PROGRAMMER GROUP BY PROF2

Output:LANGUAGE PROF2COUNT-------- ----------Assembly 1Basic 2C 2Clipper 1Cobol 2Dbase 4Java 1Oracle 1

11) Display THE NUMBER OF people in EACH salary group.

SELECT SALARY,COUNT(NAME) AS PEOPLE FROM PROGRAMMER GROUP BY SALARY

Output:

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SALARY PEOPLE---------- ---------- 2500 2 2800 2 2900 1 3000 2 3200 2 3500 1 3600 1 3700 1 4100 1 4500 1

12) Display THE NUMBER OF people who studied in EACH institute.

SELECT SPLACE AS INSTITUTE,COUNT(NAME) AS PEOPLE FROM STUDIES GROUP BY SPLACE

Output:INSTITUTE PEOPLE--------- ----------APPLE 1BDPS 2BITS 1BRILLIANT 1CCIT 1PRAGATHI 3S.S.I.L 1SABHARI 4

13) Display THE NUMBER OF people who studied in EACH course.

SELECT COURSE AS STUDY,COUNT(NAME) AS PEOPLE FROM STUDIES GROUP BY COURSE

Output:STUDY PEOPLE----- ----------DAP 2DCA 4DCA/P 1DCAP 1DCP 1DCS 1HDCP 1

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PGDCA 3

14) Display the TOTAL development COST of the packages developed in EACH language.

SELECT DEV_IN AS LANGUAGE,SUM(DCOST) AS TOTCOST FROM SOFTWARE GROUP BY DEV_IN

Output:LANGUAGE TOTCOST-------- ----------ASSEMBLY 6530BASIC 8100C 29100C++ 1200COBOL 3500DBASE 55000JAVA 7500ORACLE 97000PASCAL 100500

15) Display the selling cost of the package developed in EACH language.

SELECT DEV_IN AS LANGUAGE,SUM(SCOST) AS SELLCOST FROM SOFTWARE GROUP BY DEV_IN

Output:LANGUAGE SELLCOST-------- ----------ASSEMBLY 2999.95BASIC 3599.95C 8025C++ 300COBOL 3000DBASE 21000JAVA 800ORACLE 21000PASCAL 9449.95

16) Display the cost of the package developed by EACH programmer.

SELECT NAME AS PRNAME,SUM(DCOST) AS TOTCOST FROM SOFTWARE GROUP BY NAME

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Output:PRNAME TOTCOST-------- ----------ANAND 22000JAGADESH 19500JULIANA 3500KAMALA 20000MARY 106200PATRICK 5000QADIR 3930RAMESH 39500REMITHA 11000REVATHI 77100VIJAYA 700

17) Display the sales values of the package developed in EACH programmer.

SELECT NAME AS PRNAME, SUM(SCOST*SOLD) AS SALESVAL FROM SOFTWARE GROUP BY NAME

Output:PRNAME SALESVAL-------- ----------ANAND 84697.85JAGADESH 50000JULIANA 0KAMALA 63000MARY 200700PATRICK 8250QADIR 96894.3RAMESH 55296.35REMITHA 51975REVATHI 50200GOPAL 5400

18) Display the NUMBER of packages developed by EACH programmer.

SELECT NAME AS PRNAME,COUNT(TITLE) AS TOTPACK FROM SOFTWARE GROUP BY NAME

Output:PRNAME TOTPACK-------- ----------ANAND 2JAGADESH 2JULIANA 1KAMALA 1MARY 3GOPAL 1NIHAR 2RAMESH 2

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REMITHA 2REVATHI 2VIJAYA 1

19) Display the sales COST of packages developed by EACH programmer language wise.

SELECT SUM(SCOST) AS SELLCOST FROM SOFTWARE GROUP BY DEV_IN

Output: SELLCOST---------- 2999.95 3599.95 8025 300 3000 21000 800 21000 9449.92

20) Display EACH programmers name, costliest package and cheapest packages developed by Him/Her.

SELECT NAME PRNAME,MIN(DCOST) CHEAPEST,MAX(DCOST) COSTLIEST FROM SOFTWARE GROUP BY NAME

Output:PRNAME CHEAPEST COSTLIEST-------- ---------- ----------ANAND 6000 16000JAGADESH 7500 12000JULIANA 3500 3500KAMALA 20000 20000MARY 1200 85000PATRICK 5000 5000QADIR 530 3400RAMESH 4500 35000REMITHA 5000 6000REVATHI 2100 75000VIJAYA 700 700

21) Display EACH language name with AVERAGE development cost, AVERAGE cost, selling cost and AVERAGE price per copy.

SELECT DEV_IN AS LANGUAGE,AVG(DCOST) AS AVGDEVCOST,AVG(SCOST) AS AVGSELLCOST,AVG(SCOST) AS PRICEPERCPY FROM SOFTWARE

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GROUP BY DEV_IN

Output:LANGUAGE AVGDEVCOST AVGSELLCOST PRICEPERCPY-------- ---------- ----------- -----------ASSEMBLY 3265 1499.975 1499.975BASIC 4050 1799.975 1799.975C 7275 2006.25 2006.25C++ 1200 300 300COBOL 3500 3000 3000DBASE 27500 10500 10500JAVA 7500 800 800ORACLE 48500 10500 10500PASCAL 25125 2362.4875 2362.4875

22) Display EACH institute name with NUMBER of courses, AVERAGE cost per course.

SELECT SPLACE AS INSTITUTE,COUNT(COURSE) AS NOOFCOURS,AVG(CCOST) AS AVGCOSTPERCOUR FROM STUDIES GROUP BY SPLACE

Output:INSTITUTE NOOFCOURS AVGCOSTPERCOUR--------- ---------- --------------APPLE 1 14000BDPS 2 27000BITS 1 22000BRILLIANT 1 11000CCIT 1 7200PRAGATHI 3 5466.66667S.S.I.L 1 3500SABHARI 4 4625

23) Display EACH institute name with NUMBER of students.

SELECT SPLACE AS INSTITUTE,COUNT(NAME) AS NOOFSTUD FROM STUDIES GROUP BY SPLACE

Output:INSTITUTE NOOFSTUD--------- ----------APPLE 1BDPS 2BITS 1BRILLIANT 1CCIT 1PRAGATHI 3S.S.I.L 1

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SABHARI 4

24) Display names of male and female programmers.

SELECT NAME AS PRNAME,SEX AS SEX FROM PROGRAMMER ORDER BY SEX

Output:PRNAME S-------- -JULIANA FKAMALA FMARY FREMITHA FVIJAYA FREVATHI FREBECCA FANAND MPATRICK MRAMESH MQADIR MNELSON MALTAF MJAGADESH M

25) Display the programmer's name and their packages.

SELECT NAME AS PRNAME,TITLE AS PACKAGE FROM SOFTWARE ORDER BY NAME

Output:PRNAME PACKAGE-------- --------------------ANAND PARACHUTESANAND VIDEO TITLING PACKJAGADESH SERIAL LINK UTILITYJAGADESH SHARES MANAGEMENTJULIANA INVENTORY CONTROLKAMALA PAYROLL PACKAGEMARY FINANCILA ACC S/WMARY CODE GENERATORMARY READ MEPATRICK GRAPHIC EDITORQADIR BOMBS AWAYQADIR VACCINESRAMESH HOTEL MANAGEMENTRAMESH DEAD LEEREMITHA PC UTILITIES

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REMITHA TSR HELP PACKAGEREVATHI HOTEL MANAGEMENTREVATHI QUIZ MASTERVIJAYA ISK EDITOR

26) Display the NUMBER of packages in EACH language.

SELECT COUNT(TITLE) AS NOOFPACK,DEV_IN AS LANGUAGE FROM SOFTWARE GROUP BY DEV_IN

Output: NOOFPACK LANGUAGE---------- -------- 2 ASSEMBLY 2 BASIC 4 C 1 C++ 1 COBOL 2 DBASE 1 JAVA 2 ORACLE 4 PASCAL

27) Display the NUMBER of packages in EACH language for which development cost is less than 1000.

SELECT COUNT(TITLE) AS NOOFPACK,DEV_IN AS LANGUAGE FROM SOFTWARE WHERE DCOST<1000 GROUP BY DEV_IN

Output: NOOFPACK LANGUAGE---------- -------- 1 ASSEMBLY 1 C

28) Display the AVERAGE difference BETWEEN scost and dcost for EACH language.

SELECT DEV_IN AS LANGUAGE,AVG(DCOST - SCOST) AS DIFF FROM SOFTWARE GROUP BY DEV_IN

Output:AVG(DCOST-SCOST)---------------- 1765.025 2250.025 5268.75

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900 500 17000 6700 38000 22762.52

29) Display the TOTAL scost, dcsot and amount TOBE recovered for EACH programmer for whose dcost HAS NOT YET BEEN recovered.

SELECT SUM(SCOST), SUM(DCOST), SUM(DCOST-(SOLD*SCOST)) FROM SOFTWAREGROUP BY NAMEHAVING SUM(DCOST)>SUM(SOLD*SCOST)

Output:SUM(SCOST) SUM(DCOST) SUM(DCOST-(SOLD*SCOST))---------- ---------- ----------------------- 3000 3500 3500 4300 77100 26900

30) Display highest, lowest and average salaries for THOSE earning MORE than 2000.

SELECT MAX(SALARY), MIN(SALARY), AVG(SALARY) FROM PROGRAMMERWHERE SALARY > 2000

Output:MAX(SALARY) MIN(SALARY) AVG(SALARY)----------- ----------- ----------- 4500 2500 3235.7143

QUERIES - III

1) Who is the highest paid C programmer?

SELECT * FROM PROGRAMMER WHERE SALARY=(SELECT MAX(SALARY) FROM PROGRAMMER WHERE PROF1 LIKE 'C' OR PROF2 LIKE 'C')

Output:NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- ---------REMITHA 19-APR-70 20-APR-93 F C ASSEMBLY 3600

2) Who is the highest paid female cobol programmer?

SELECT * FROM PROGRAMMER WHERE SALARY=(SELECT MAX(SALARY) FROM PROGRAMMERWHERE (PROF1 LIKE 'COBOL' OR PROF2 LIKE 'COBOL'))

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AND SEX LIKE 'F'

Output:NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- ---------JULIANA 31-JAN-68 21-APR-90 F COBOL DBASE 3000

3) Display the name of the HIGEST paid programmer for EACH language (prof1)

SELECT DISTINCT NAME, SALARY, PROF1 FROM PROGRAMMERWHERE (SALARY,PROF1) IN (SELECT MAX(SALARY),PROF1 FROM PROGRAMMER GROUP BY PROF1)

Output:NAME SALARY PROF1-------- --------- --------REBECCA 2500 BASICALTAF 2800 CLIPPERDADIR 3000 ASSEMBLYJULIANA 3000 COBOLVIJAYA 3500 FOXPROREMITHA 3600 CREVATHI 3700 PASCALJAGADESH 4100 ORACLEMARY 4500 C++

4) Who is the LEAST experienced programmer?

SELECT FLOOR((SYSDATE-DOJ)/365) EXP,NAME FROM PROGRAMMERWHERE FLOOR((SYSDATE-DOJ)/365) = (SELECT MIN(FLOOR((SYSDATE-DOJ)/365)) FROM PROGRAMMER)

Output: EXP NAME--------- -------- 5 JAGADESH

5) Who is the MOST experienced programmer?

SELECT FLOOR((SYSDATE-DOJ)/365) EXP,NAME,PROF1,PROF2 FROM PROGRAMMERWHERE FLOOR((SYSDATE-DOJ)/365) = (SELECT MAX(FLOOR((SYSDATE-DOJ)/365)) FROM PROGRAMMER)AND (PROF1 LIKE 'COBOL' OR PROF2 LIKE 'COBOL')

Output: EXP NAME PROF1 PROF2

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--------- -------- -------- -------- 10 NELSON COBOL DBASE

6) Which language is known by ONLY ONE programmer?

SELECT PROF1 FROM PROGRAMMER GROUP BY PROF1 HAVING PROF1 NOT IN

(SELECT PROF2 FROM PROGRAMMER) AND COUNT(PROF1)=1 UNION SELECT PROF2 FROM PROGRAMMER GROUP BY PROF2 HAVING PROF2 NOT IN

(SELECT PROF1 FROM PROGRAMMER) AND COUNT(PROF2)=1;

Output:PROF1--------C++FoxproJava

7) Who is the YONGEST programmer knowing DBASE?

SELECT FLOOR((SYSDATE-DOB)/365) AGE, NAME, PROF1, PROF2 FROM PROGRAMMERWHERE FLOOR((SYSDATE-DOB)/365) = (SELECT MIN(FLOOR((SYSDATE-DOB)/365)) FROM PROGRAMMER WHERE PROF1 LIKE 'DBASE' OR PROF2 LIKE 'DBASE')

Output: AGE NAME PROF1 PROF2---- -------- -------- -------- 31 JULIANA COBOL DBASE 31 KAMALA C DBASE

8) Which institute has MOST NUMBER of students?

SELECT SPLACE FROM STUDIES GROUP BY SPLACE HAVING COUNT(SPLACE)= (SELECT MAX(COUNT(SPLACE)) FROM STUDIES GROUP BY SPLACE)

Output:SPLACE---------SABHARI

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9) Who is the above programmer?

SELECT NAME FROM PROGRAMMER WHERE PROF1 IN (SELECT PROF1 FROM PROGRAMMER GROUP BY PROF1 HAVING PROF1 NOT IN (SELECT PROF2 FROM PROGRAMMER) AND COUNT(PROF1)=1 UNION SELECT PROF2 FROM PROGRAMMER GROUP BY PROF2 HAVING PROF2 NOT IN (SELECT PROF1 FROM PROGRAMMER) AND COUNT(PROF2)=1))UNION SELECT NAME FROM PROGRAMMER WHERE PROF2 IN (SELECT PROF1 FROM PROGRAMMER GROUP BY PROF1 HAVING PROF1 NOT IN (SELECT PROF2 FROM PROGRAMMER) AND COUNT(PROF1)=1 UNION SELECT PROF2 FROM PROGRAMMER GROUP BY PROF2 HAVING PROF2 NOT IN (SELECT PROF1 FROM PROGRAMMER) AND COUNT(PROF2)=1))

Output:NAME--------JAGADESHMARYVIJAYA

10) Which female programmer earns MORE than 3000/- but DOES NOT know C, C++, Oracle or Dbase?

SELECT * FROM PROGRAMMER WHERE SEX LIKE 'F' AND SALARY >3000AND (PROF1 NOT IN('C','C++','ORACLE','DBASE')OR PROF2 NOT IN('C','C++','ORACLE','DBASE'))

Output:NAME DOB DOJ S PROF1 PROF2 SALARY-------- --------- --------- - -------- -------- ---------REMITHA 19-APR-70 20-APR-93 F C ASSEMBLY 3600REVATHI 02-DEC-69 12-JAN-92 F PASCAL BASIC 3700VIJAYA 14-DEC-65 12-MAY-92 F FOXPRO C 3500

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11) Which is the COSTLIEST course?

SELECT COURSE FROM STUDIES WHERE CCOST = (SELECT MAX(CCOST) FROM STUDIES)

Output:COURS-----DCA

12) Which course has been done by MOST of the students?

SELECT COURSE FROM STUDIES GROUP BY COURSE HAVING COUNT(COURSE)= (SELECT MAX(COUNT(COURSE)) FROM STUDIES GROUP BY COURSE)

Output:COURS-----DCA

13) Display name of the institute and course Which has below AVERAGE course fee?

SELECT SPLACE,COURSE FROM STUDIES WHERE CCOST < (SELECT AVG(CCOST) FROM STUDIES)

Output:SPLACE COURS--------- -----SABHARI PGDCASABHARI PGDCACCIT DCAS.S.I.L. DCAPRAGATHI DCPSABHARI PGDCAPRAGATHI DAPPRAGATHI DCAPSABHARI PGDCABDPS DCSSABHARI DAP

14) Which institute conducts COSTLIEST course?

SELECT SPLACE FROM STUDIES WHERE CCOST = (SELECT MAX(CCOST) FROM STUDIES)

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Output:SPLACE---------BDPS

15) Which course has below AVERAGE number of students?

SELECT COURSE FROM STUDIES HAVING COUNT(NAME)<(SELECT AVG(COUNT(NAME)) FROM STUDIES GROUP BY COURSE)GROUP BY COURSE;

Output:COURS-----DCA/PDCAPDCPDCSHDCP

16) Which institute conducts the above course?

SELECT SPLACE FROM STUDIES WHERE COURSE IN (SELECT COURSE FROM STUDIES HAVING COUNT(NAME) < (SELECT AVG(COUNT(NAME)) FROM STUDIES GROUP BY COURSE) GROUP BY COURSE);

Output:SPLACE---------BRILLIANTPRAGATHIPRAGATHIBDPSAPPLE

17) Display names of the course WHOSE fees are within 1000(+ or -) of the AVERAGE fee.

SELECT COURSE FROM STUDIES WHERE CCOST < (SELECT AVG(CCOST)+1000 FROM STUDIES) AND CCOST > (SELECT AVG(CCOST)-1000 FROM STUDIES)

Output:

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COURS-----DCA/P

18) Which package has the HIGEST development cost?

SELECT TITLE,DCOST FROM SOFTWARE WHERE DCOST = (SELECT MAX(DCOST) FROM SOFTWARE)

Output:TITLE DCOST-------------------- ---------FINANCILA ACC S/W 85000

19) Which package has the LOWEST selling cost?

SELECT TITLE,SCOST FROM SOFTWARE WHERE SCOST = (SELECT MIN(SCOST) FROM SOFTWARE)

Output:TITLE SCOST-------------------- ---------DEAD LEE 99.92

20) Who developed the package, which has sold the LEAST number of copies?

SELECT NAME,SOLD FROM SOFTWARE WHERE SOLD = (SELECT MIN(SOLD) FROM SOFTWARE)

Output:NAME SOLD-------- ---------JULIANA 0

21) Which language was used to develop the package WHICH has the HIGEST sales amount? SELECT DEV_IN,SCOST FROM SOFTWARE WHERE SCOST = (SELECT MAX(SCOST) FROM SOFTWARE)

Output:DEV_IN SCOST-------- ---------ORACLE 18000

22) How many copies of the package that has the LEAST DIFFRENCE between development and selling cost were sold?

SELECT SOLD,TITLE FROM SOFTWARE

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WHERE TITLE = (SELECT TITLE FROM SOFTWARE WHERE (DCOST-SCOST)=(SELECT MIN(DCOST-SCOST) FROM SOFTWARE))

Output:SOLD TITLE---- -------------------- 15 QUIZ MASTER

23) Which is the COSTLIEAST package developed in PASCAL?

SELECT TITLE FROM SOFTWARE WHERE DCOST = (SELECT MAX(DCOST) FROM SOFTWARE WHERE DEV_IN LIKE 'PASCAL')

Output:TITLE--------------------HOTEL MANAGEMENT

24) Which language was used to develop the MOST NUMBER of package?

SELECT DEV_IN FROM SOFTWARE GROUP BY DEV_IN HAVING MAX(DEV_IN) = (SELECT MAX(DEV_IN) FROM SOFTWARE)

Output:DEV_IN--------PASCAL

25) Which programmer has developed the HIGEST NUMBER of package?

SELECT NAME FROM SOFTWARE GROUP BY NAME HAVING MAX(NAME) = (SELECT MAX(NAME) FROM SOFTWARE)

Output:NAME--------VIJAYA

26) Who is the author of the COSTLIEST package?

SELECT NAME,DCOST FROM SOFTWARE WHERE DCOST = (SELECT MAX(DCOST) FROM SOFTWARE)

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Output:NAME DCOST-------- ---------MARY 85000

27) Display names of packages WHICH have been sold LESS THAN the AVERAGE number of copies?

SELECT TITLE FROM SOFTWARE WHERE SOLD < (SELECT AVG(SOLD) FROM SOFTWARE)

Output:TITLE--------------------VIDEO TITLING PACKSERIAL LINK UTILITYSHARES MANAGMENTINVENTORY CONTROLPAYROLL PACKAGEFINANCILA ACC S/WCODE GENERATORGRAPHIC EDITORVACCINESHOTEL MANAGEMENTTSR HELP PACKAGEHOTEL MANAGEMENTQUIZ MASTERISK EDITOR

28) Who are the female programmers earning MORE than the HIGEST paid male programmers?

SELECT NAME FROM PROGRAMMER WHERE SEX LIKE 'F' AND SALARY > (SELECT(MAX(SALARY)) FROM PROGRAMMER WHERE SEX LIKE 'M')

Output:NAME--------MARY

29) Which language has been stated as prof1 by MOST of the programmers?

SELECT PROF1 FROM PROGRAMMER GROUP BY PROF1 HAVING PROF1 = (SELECT MAX(PROF1) FROM PROGRAMMER)

Output:PROF1

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--------PASCAL

30) Who are the authors of packages, WHICH have recovered MORE THAN double the development cost?

SELECT NAME distinctFROM SOFTWARE WHERE SOLD*SCOST > 2*DCOST

Output:NAME--------ANANDJAGDESHKAMALAMARYQADIRREMITHAREVATHIVIJAYA

31) Display programmer names and CHEAPEST package developed by them in EACH language?

SELECT NAME,TITLE FROM SOFTWARE WHERE DCOST IN (SELECT MIN(DCOST) FROM SOFTWARE GROUP BY DEV_IN)

Output:NAME TITLE-------- --------------------QADIR BOMBOS AWAYVIJAYA ISK EDITORMARY READ MEREVATHI QUIZ MASTERJULIANA INVENTORY CONTROLRAMESH DEAD LEEJAGADESH SERIAL LINK UTILITYJAGDESH SHARES MANAGMENTKAMALA PAYROLL PACKAGEMARY CODE GENERATOR

32) Who is the YOUNGEST male programmer born in 1965?

SELECT NAME FROM PROGRAMMER WHERE DOB=(SELECT (MAX(DOB)) FROM PROGRAMMER

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WHERE TO_CHAR(DOB,'YYYY') LIKE '1965')

Output:NAME--------VIJAYA

33) Display language used by EACH programmer to develop the HIGEST selling and LOWEST selling package.

SELECT NAME, DEV_IN FROM SOFTWAREWHERE SOLD IN (SELECT MAX(SOLD) FROM SOFTWARE GROUP BY NAME)UNIONSELECT NAME, DEV_IN FROM SOFTWAREWHERE SOLD IN (SELECT MIN(SOLD) FROM SOFTWARE GROUP BY NAME)

Output:NAME DEV_IN-------- --------ANAND BASICANAND PASCALJAGADESH JAVAJAGDESH ORACLEJULIANA COBOLKAMALA DBASEMARY C++MARY ORACLEPATRICK PASCALQADIR ASSEMBLYQADIR CRAMESH DBASERAMESH PASCALREMITHA ASSEMBLYREMITHA CREVATHI BASICREVATHI PASCALVIJAYA C

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34) Who is the OLDEST female programmer WHO joined in 1992

SELECT NAME FROM PROGRAMMER WHERE DOJ=(SELECT (MIN(DOJ)) FROM PROGRAMMER WHERE TO_CHAR(DOJ,'YYYY') LIKE '1992')

Output:NAME--------KAMALAREVATHI

35) In WHICH year where the MOST NUMBER of programmer born?

SELECT DISTINCT TO_CHAR(DOB,'YYYY') FROM PROGRAMMER WHERE TO_CHAR(DOJ,'YYYY') = (SELECT MIN(TO_CHAR(DOJ,'YYYY')) FROM PROGRAMMER)

Output:TO_C----1965

36) In WHICH month did MOST NUMBRER of programmer join?

SELECT DISTINCT TO_CHAR(DOJ,'MONTH') FROM PROGRAMMER WHERE TO_CHAR(DOJ,'MON') = (SELECT MIN(TO_CHAR(DOJ,'MON')) FROM PROGRAMMER)

Output:TO_CHAR(D---------APRIL

37) In WHICH language are MOST of the programmer's proficient?

SELECT PROF1 FROM PROGRAMMER GROUP BY PROF1 HAVING COUNT(PROF1)=(SELECT MAX(COUNT(PROF1)) FROM PROGRAMMER GROUP BY PROF1) OR COUNT(PROF2)=(SELECT MAX(COUNT(PROF2)) FROM PROGRAMMER GROUP BY PROF2)UNION SELECT PROF2

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FROM PROGRAMMER GROUP BY PROF2HAVING COUNT(PROF1)=(SELECT MAX(COUNT(PROF1)) FROM PROGRAMMER GROUP BY PROF1) OR COUNT(PROF2)=(SELECT MAX(COUNT(PROF2)) FROM PROGRAMMER GROUP BY PROF2)

Output:PROF1--------DBASEPASCAL

38) Who are the male programmers earning BELOW the AVERAGE salary of female programmers?

SELECT NAME FROM PROGRAMMER WHERE SEX LIKE 'M' AND SALARY < (SELECT(AVG(SALARY)) FROM PROGRAMMER WHERE SEX LIKE 'F')

Output:NAME--------ANANDALTAFNELSONPATRICKDADIRRAMESH

QUERY - IV

1) Display the details of THOSE WHO are drawing the same salary.select a.name,a.salaryfrom programmer a,programmer bwhere a.salary=b.salary and a.name <> b.name

OR

select name, salary from programmer wheresalary = any(select salary from programmer p group by salary havingsalary=p.salary and count(*)>1)

2) Display the details of software developed by male programmers earing MORE than 3000. select software.*

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from programmer p,software swhere p.name=s.name and salary>3000 and sex='m';

3) Display details of packages developed in PASCAL by female programmers.select s.*from programmer p,software swhere p.name=s.name and sex='f' and dev_in='pascal';

4) Display the details of these programmer WHO joined BEFORE 1990. select *

from programmerwhere to_char(doj,'yy')<90;

5)Display details of software developed in C by female programmers of PRAGATHI.select s.*from software s,studies st,programmer pwhere s.name=st.name and p.name=s.name and sex='f' and splace='pragathi';

6) Display NUMBER of packages NUMBER of copies sold and sales value of EACH programmer Institute-wise.

Select studies.splace, count(software.dev_in), count(software.sold), sum(software.sold*software.scost)

from software,studieswhere software.name=studies.name group by studies.splace;

7) Display details of software developed in DBASE by male programmers WHO belong to the institute on which MOST NUMBER OF programmers studies. select software.* from programmer,software,studies

where programmer.name=software.name and software.name=studies.name and programmer.name=studies.name and sex='m' and dev_in='dbase' and splace= (select splace

from studies group by splace having count(splace) =(select max(count(splace))

from studies group by splace));

8) Display the details of the software that was developed by male programmers born BEFORE 1965 and female programmers born AFTER 1975. select software.* from programmer p,software s

where s.name=p.name and sex='m' and to_char(dob,'yy')<64 or sex='f' and To_char(dob,'yy')>75);

9) Display the details of the software that was developed in the language that is NOT the programmers first proficiency. select * from software where dev_in in(select unique(prof2) from programmer where prof2 not in(select prof1

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from programmer)); or

select distinct x.* from software x, programmer ywhere y.prof1 <> x.dev_inand x.name = y.name

10) Display details of software that was developed in the language which is NITHER first NOR second proficiency of the programmer. select s.* from programmer p,software swhere s.name=p.name and (dev_in <> prof1 and dev_in <> prof2);

11) Display details of software developed by male students of SABHARI. select s.* from programmer p,software s,studies st where p.name=s.name and s.name=st.name and sex='m' and splace='sabhari';

12) Display the names of programmers WHO HAVE NOT developed any package. select name from programmer where name not in(select name from software);or

select distinct name from programmer minusselect distinct name from software;

13) What is the total cost of the software developed by the programmers by APPLE? select sum(scost) from software s,studies st where s.name=st.name and splace='apple';or

select sum(x.scost) from software x, studies y wherex.name=y.namegroup by y.splacehavingy.splace = 'APPLE'

14) Who are the programmers WHO JOINED in the same day? select a.name,a.doj from programmer a,programmer b where a.doj=b.doj and a.name <> b.name;or

select name from programmer where to_char(doj,'dd')=any(select to_char(doj,'dd') from programmergroup byto_Char(doj,'dd')havingcount(*)>1)

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15) Who are the programmers WHO HAVE THE SAME PROF2? select unique(a.name),a.prof2 from programmer a,programmer b where a.prof2=b.prof2 and a.name <> b.name;

or

select name from programmer where prof2 = any(select prof2 from programmer group by prof2 having count(*) >1);

16) Display the total sales values of software, institutes-wise.select studies.splace,sum(software.sold*software.scost)from software,studieswhere studies.name=software.name group by studies.splace;

17) In which institutes did the person who developed the COSTLIEST package study?select splacefrom software st,studies swhere s.name=st.name group by splace,dcost having max(dcost)=(select max(dcost)

from software);or

select x.splace from studies x, software y wherey.scost = ( select max(y.scost) from software y) andx.name=y.name;

18) Which language listed in prof1 and prof2 HAS NOT BEEN used to develop any package? select prof1from programmerwhere prof1 not in(select dev_in

from software) union select prof2

from programmerwhere prof2 not in(select dev_in from software);

or

(select distinct prof1 from prgrammer unionselect distinct prof2 from programmer) minusselect distinct dev_in from software;

19) How much does the person WHO developed the HIGHEST selling package earn and WHAT course did he/she undergo?

select p1.salary,s2.coursefrom programmer p1,software s1,studies s2where p1.name=s1.name and s1.name=s2.name and scost=(select max(scost) from software);

20) How many months will it take for each programmer to recover the cost of the course underwent?

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select p.name,ceil(ccost/salary)from programmer p,studies s

where s.name=p.name;

21) Which is the COSTLIEST package developed by a person with under 3 years expenence?select dev_infrom programmer p,software swhere p.name=s.name and dcost= (select max(software.dcost)

from programmer p, software swhere p.name=s.name and to_char(round(((sysdate-

doj)/365)+100))<3);

or

select x.title from software x, programmer y where(months_between(sysdate, y.doj)/12) > 3 andx.name=y.name;

22) What is the AVERAGE salary for those WHOSE software's sales value is more than 50,000? select avg(salary) from programmer p,software s where p .name=s.name and sold*scost>50000;

23) How many packages were developed by the students WHO studied in the institute that Charge the LOWEST course fee? select count(s.name) from software s,studies stwhere s.name=st.name group by s.name,ccost having min(ccost)=(select min(ccost) from studies);

24) How many packages were developed by the person WHO developed the CHEAPEST package. Where did he\she study? select count(*) from programmer p,software swhere s .name=p.name group by dev_in having min(dcost)=(select min(dcost) from software);

25) How many packages were developed by female programmers earning MORE than the HIGHEST paid male programmer?

select count(dev_in)from programmer p,software s

where s.name=p.name and sex='f' and salary>(select max(salary)from programmer p,software swhere s.name=p.name and sex='m');

26) How many packages were developed by the MOST experienced programmers from BDPS. select count(*) from software s,programmer pwhere p.name=s.name group by doj having max(doj)=(select max(doj) from studies st,programmer p, software swhere p.name=s.name and st.name=p.name and (splace='bdps'));

or

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select count(x.name) from software x, programmer y, studies x wheremonths_between(sysdate, y.doj)/12) = (select max(months_between(sysdate,y.doj)/12)from programmer y, studies = wherex.splace = 'BDPS' and y.name = z.name) andx.name=y.name andz.splace='BDPS'

27) List the programmers (from software table) and institutes they studied, including those WHO DIDN'T develop any package. select name,splace from studies where name not in(select name from software);or

(select distinct x.name, z.splace from programmer x, software y, studies z wherex.name not in (select y.name from software y) andx.name = z.name) union(select distinct y.name, z.splace fromsoftware y, studies z where y.name=z.name);

28) List each profit with the number of programmers having that prof1 and the number of packages developed in that prof1. select count(*),sum(scost*sold-dcost) "PROFIT" from software where dev_in in (select prof1 from programmer) group by dev_in;

29) List programmer names (from programmer table) and number of packages EACH developed. select s.name,count(dev_in) from programmer p1,software s where p1.name=s.name group by s.name;or

select programmer name, count(title) from programmer , softwarewhereprogrammer name = software.name(+)group by programmer.name;

30) List all the details of programmers who has done a course at S.S.I.L. select programmer.* from programmer,studieswhere splace='SSIL' and programmer.name=software.name and programmer.name=studies.name and studies.splace='s.s.i.l.';

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