COUNT is a method which will count the total no of columns,total no of rows,total no of values.Like :-
SELECT COUNT(Column_Name) FROM Table_Name
This will count total no of rows where First_Name is Saurabh.
SELECT Count(*) FROM Table_Name WHERE First_Name = 'Saurabh'
SELECT COUNT(First_Name) AS NoOfStudents FROM STUDENTS
STUDENTS is a Table_Name
Max :-
SELECT MAX(Column1) From Table1
SELECT MAX(DateOfBirth) AS BirthDate FROM Employee WHERE DateOfBirth > 12202009
Min :-
SELECT MIN(Column1) From Table1
SELECT MIN(DateOfBirth) AS BirthDate FROM Employee WHERE DateOfBirth < 12202009
SELECT COUNT(Column_Name) FROM Table_Name
This will count total no of rows where First_Name is Saurabh.
SELECT Count(*) FROM Table_Name WHERE First_Name = 'Saurabh'
SELECT COUNT(First_Name) AS NoOfStudents FROM STUDENTS
STUDENTS is a Table_Name
Max :-
SELECT MAX(Column1) From Table1
SELECT MAX(DateOfBirth) AS BirthDate FROM Employee WHERE DateOfBirth > 12202009
Min :-
SELECT MIN(Column1) From Table1
SELECT MIN(DateOfBirth) AS BirthDate FROM Employee WHERE DateOfBirth < 12202009