الرجاء كيف يمكنني حل التمارين التالية :
1- Create a query to display the total number of employees and, of that total, the number of
employees hired in 1995, 1996, 1997, and 1998. Create appropriate column headings.
من المفروض أن يظهر الحل بالشكل التالي ولكن ما هي التعليمة الصحيحة لذلك
total 1995 1996 1997 1998
20 1 2 2 3
2- Create a matrix query to display the job, the salary for that job based on department
number, and the total salary for that job, for departments 20, 50, 80, and 90, giving each
column an appropriate heading.