Проблема с графом()

Question

Я хочу написать запрос для извлечения COUNT(of employees with the salary=1000) и COUNT(of total no of employees) из той же таблицы. любые идеи ??

Answer 1

select 
    count(*) totalCount, 
    count(case when salary = 1000 then 1 else NULL end) specialCount 
from Employees 

COUNT подсчитывает непустые строки.

Answer 2

SELECT COUNT(EmployeeID) as 'Total Employees', 
    (SELECT COUNT(EmployeeID) FROM Employees WHERE Salary = 1000) as 'Salaried' 
    FROM Employees 

Answer 3

select count(*) as employeeCount, 
(select count(*) from employee where salary=1000) as bigmoneyEmployeeCount 
from employee 

Answer 4

Другой метод:

SELECT 
    COUNT(*) AS total_employees, 
    SUM(CASE WHEN salary = 1000 THEN 1 ELSE 0 END) AS employees_with_1000_salary 
FROM 
    Employees