What Would The Following Sql Statement Return Select Count First Name From Employees

Select count first name from employees.

What would the following sql statement return select count first name from employees. If the employees table has the following columns and you want to write a select statement to return the employee last name and department number for employee number 176 which of the following sql statements should you use. The employees table contains these columns. The select will return value 0 into v count. Select count from employees.

The sql count function is an aggregate function that returns the number of rows returned by a query. Select first name last name total sales from salesman s1 where total sales all select total sales from salesman s2 where s1 salesman id s2 salesman id. Which value is displayed. Select count category from styles.

No employees earn more than 50000. Select count from employees. Which of the following would be returned by this sql statement. The total number of non null first names in the employees table 14.

Evaluate this select statement. What would the following sql statement return. The total number of non null first names in the employees table using your existing knowledge of the employees table would the following two statements produce the same result. Employee id number 9 last name varchar2 20 first name varchar2 20 salary number 7 2 department id.

Mark for review 1 points. Select first name last name department id from employees where department id in 50 80 and first name like c or last name like s mark for review 1 points first name last name department id shelly higgins 110 first name last name department id curtis davies 50. What would the following sql statement return. Mark for review 1 points 6 7 the statement will not execute successfully.

The select will fail because it does not return exactly one row. A listing of all unique salaries in the employees table the total number of rows in the employees table the total amount of salaries in the employees table the number of unique salaries in the employees table 3. Begin select count into v count from employees where salary 50000. 0 correct correct 7.

Select count commission pct from employees. Select count commission pct from employees. You issue this select statement. Select count first name from employees.

Which select statement will calculate the number of rows in the products table. Select count from products. Yes no the second statement is invalid the first statement is invalid. What would the following sql statement return.

The following illustrates the syntax of the sql count function. Select count from products. Select count distinct salary from employees. You can use the count function in the select statement to get the number of employees the number of employees in each department the number of employees who hold a specific job etc.

Look at this pl sql block. The following sql statement is an example of a correlated subquery. Select count from employees.