longoriarey5683 longoriarey5683
  • 21-10-2019
  • Computers and Technology
contestada

Write an aggregate expression for the number of entries in the VendorName column, including null values - 1) COUNT(Invoice + Null) 2) SUM(VendorName) 3) COUNTIVendorName) 4) COUNT)

Respuesta :

Limosa
Limosa Limosa
  • 25-10-2019

Answer:

COUNT(*)

Explanation:

COUNT (*) function is the function which returns numbers of the rows which satisfies WHERE clause of the SELECT statement.

There are the following examples to find that, how many rows in Vendor table have value "RAW" in the menu_code column:

=> SELECT COUNT(*) FROM Vendor WHERE menu_code = 'RAW';

Answer Link

Otras preguntas

Brittany wants to make cookies for the whole fourth grade. One batch of dough makes 2 dozen cookies. There are 68 fourth grader at her school.Is it reasonable t
Why are SI units helpful for describing objects? A. They are the standard used by scientists worldwide. B. They are more accurate. C. They do not meas
What is 28/42 in simplest form
What is 0.56 as a fraction
How do lines of latitude and longitude help you locate places on earth surface with greater accuracy?
nate solves the problem 3x5=15 by writing and solving 15 divide 5=3. explain why nates method works
what is a rule for the pattern 8,6,9,7,10...
Give an example of how a cells structure relates to its function in the body
What does tho map tell you about Muhammad's followers? Please help!
When a tuning fork vibrates over an open pipe and the air in the pipe starts to vibrate, the vibrations in the tube are caused by a. harmonics. b. beats. c. rei