SQL| SQL Statement To Return Number Of Records From A Table| SlightBook

With SQL, how can you return the number of records in the "Persons" table?

A) SELECT COLUMNS() FROM Persons

B) SELECT COLUMNS(*) FROM Persons

C) SELECT COUNT(*) FROM Persons

D) SELECT COUNT() FROM Persons

The COUNT() function returns the number of rows that match a specified criterion.

COUNT() Syntax

SELECT COUNT(column_name) FROM table_name WHERE condition;

COUNT() Example is given as follows:
The following SQL statement finds the number of courses:

Example

SELECT COUNT(CourseID) FROM SlghtBook;

With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?

How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table?

With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?

With SQL, how can you insert a new record into the "Persons" table?

With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?