With SQL, how can you return the number of not null records in the “Persons” table ?
A. SELECT COUNT() FROM Persons
B. SELECT COLUMNS() FROM Persons
C. SELECT COLUMNS(*) FROM Persons
D. SELECT COUNT(*) FROM Persons
Answer:A
With SQL, how can you return the number of not null records in the “Persons” table ?
A. SELECT COUNT() FROM Persons B. SELECT COLUMNS() FROM Persons C. SELECT COLUMNS(*) FROM Persons D. SELECT COUNT(*) FROM Persons