A83       KRISHNA   30000 Select count(SALARY) from EMP; will result in
A. 1
B. 0
C. 3
D. None of the Mentioned
Answer:A
A83       KRISHNA   30000 Select count(SALARY) from EMP; will result in
A. 1 B. 0 C. 3 D. None of the Mentioned
Explanation: The COUNT() function returns the number of rows that matches a specified criteria.The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column.