This question asked in CBSE Comptt., 2014
Consider the following tables SCHOOL and ADMIN and answer following questions:
CODE | TEACHER | SUBJECT | DOJ | PERIODS | EXPERIENCE |
1001 | RAVI SHANKAR | ENGLISH | 12/03/2000 | 24 | 10 |
1009 | PRIYA RAI | PHYSICS | 03/09/1998 | 26 | 12 |
1203 | LIS ANAND | ENGLISH | 09/04/2000 | 27 | 5 |
1045 | YASH RAJ | MATHS | 24/08/2000 | 24 | 15 |
1123 | GANAN | PHYSICS | 16/07/1999 | 28 | 3 |
1167 | HARISH B | CHEMISTRY | 19/10/1999 | 27 | 5 |
1215 | UMESH | PHYSICS | 11/05/1198 | 22 | 16 |
CODE | GENDER | DESIGNATION |
1001 | MALE | VICE PRINCIPAL |
1009 | FEMALE | COORDINATOR |
1203 | FEMALE | COORDINATOR |
1045 | MALE | HOD |
1123 | MALE | SENIOR TEACHER |
1167 | MALE | SENIOR TEACHER |
1215 | MALE | HOD |
Give the output of the following SQL queries:
Question 1 (i)
Select Designation Count (*) From Admin Group By Designation Having Count (*) <2;
Answer:
The query will display the designation and number of teachers grouped by their designation and having count less than 2.
Question 1(ii)
SELECT max (EXPERIENCE) FROM SCHOOL;
Answer:
The query will display the maximum value in the column EXPERIENCE of table SCHOOL.
Question 1(iii)
SELECT TEACHER FROM SCHOOL WHERE EXPERIENCE >12 ORDER BY TEACHER;
Answer:
The query will display the name of teachers who have more than 12 years of experience, in ascending order of names.
Question 1(iv)
SELECT COUNT (*), GENDER FROM ADMIN GROUP BY GENDER;
Answer:
The query will display the number of male and female teachers.