In a Database Karnataka_Sangam there are two tables with the instances given below :

Table : STUDENTS

ADMNO	NAME	CLASS	SEC	RN	ADDRESS	PHONE
1211	Meena	12	D	4	A-26	3245678
1212	Vani	10	D	1	B-25	5456789
1213	Meena	12	A	1
1214	Karish	10	B	3	AB-234	4567890
1215	Suraj	11	C	2	ZW12	4345677

Table : SPORTS

ADMNO	GAME	COACHNAME	GRADE
1215	Cricket	Mr. Ravi	A
1213	Vollyball	Ms. Chadha	B
1211	Vollyball	Mr. Govardhan	A
1212	Basket Ball	Mr. Tewani	B

Write SQL queries for the following :

(i) To count how many addresses are not having NULL values in the address column of STUDENTS table.

(ii) To display Name, Class from STUDENTS table and the corresponding Grade from SPORTS table.

(iii) To display Name of the student and their corresponding Coachnames from STUDENTS and SPORTS tables.

(i)

SELECT COUNT(ADDRESS) FROM STUDENTS;

Output

+----------------+
| COUNT(ADDRESS) |
+----------------+
|              4 |
+----------------+

(ii)

SELECT S.NAME, S.CLASS, SP.GRADE 
FROM STUDENTS S, SPORTS SP 
WHERE S.ADMNO = SP.ADMNO;

Output

+-------+-------+-------+
| NAME  | CLASS | GRADE |
+-------+-------+-------+
| MEENA |    12 | A     |
| VANI  |    10 | B     |
| MEENA |    12 | B     |
| SURAJ |    11 | A     |
+-------+-------+-------+

(iii)

SELECT S.NAME, SP.COACHNAME 
FROM STUDENTS S, SPORTS SP 
WHERE S.ADMNO = SP.ADMNO;

Output

+-------+--------------+
| NAME  | COACHNAME    |
+-------+--------------+
| MEENA | MR.GOVARDHAN |
| VANI  | MR.TEWANI    |
| MEENA | MS.CHADHA    |
| SURAJ | MR.RAVI      |
+-------+--------------+