# Using Statistical Aggregate Functions:VARP : VARP « Analytical Functions « SQL Server / T-SQL Tutorial

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 SQL Server / T-SQL Tutorial » Analytical Functions » VARP
14.13.1.Using Statistical Aggregate Functions:VARP
 ```The VARP function also returns the variance of the provided values for the entire data population of the expression. 6> 7> CREATE TABLE employee( 8>    id          INTEGER NOT NULL PRIMARY KEY, 9>    first_name  VARCHAR(10), 10>    last_name   VARCHAR(10), 11>    salary      DECIMAL(10,2), 12>    start_Date  DATETIME, 13>    region      VARCHAR(10), 14>    city        VARCHAR(20), 15>    managerid   INTEGER 16> ); 17> GO 1> INSERT INTO employee VALUES (1, 'Jason' ,  'Martin', 5890,'2005-03-22','North','Vancouver',3); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (2, 'Alison',  'Mathews',4789,'2003-07-21','South','Utown',4); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (3, 'James' ,  'Smith',  6678,'2001-12-01','North','Paris',5); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (4, 'Celia' ,  'Rice',   5567,'2006-03-03','South','London',6); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (5, 'Robert',  'Black',  4467,'2004-07-02','East','Newton',7); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (6, 'Linda' ,  'Green' , 6456,'2002-05-19','East','Calgary',8); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (7, 'David' ,  'Larry',  5345,'2008-03-18','West','New York',9); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (8, 'James' ,  'Cat',    4234,'2007-07-17','West','Regina',9); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (9, 'Joan'  ,  'Act',    6123,'2001-04-16','North','Toronto',10); 2> GO (1 rows affected) 1> 2> select * from employee; 3> GO id          first_name last_name  salary       start_Date              region     city                 managerid ----------- ---------- ---------- ------------ ----------------------- ---------- -------------------- -----------           1 Jason      Martin          5890.00 2005-03-22 00:00:00.000 North      Vancouver                      3           2 Alison     Mathews         4789.00 2003-07-21 00:00:00.000 South      Utown                          4           3 James      Smith           6678.00 2001-12-01 00:00:00.000 North      Paris                          5           4 Celia      Rice            5567.00 2006-03-03 00:00:00.000 South      London                         6           5 Robert     Black           4467.00 2004-07-02 00:00:00.000 East       Newton                         7           6 Linda      Green           6456.00 2002-05-19 00:00:00.000 East       Calgary                        8           7 David      Larry           5345.00 2008-03-18 00:00:00.000 West       New York                       9           8 James      Cat             4234.00 2007-07-17 00:00:00.000 West       Regina                         9           9 Joan       Act             6123.00 2001-04-16 00:00:00.000 North      Toronto                       10 (9 rows affected) 1> 2> 3> 4> SELECT VARP(salary) Variance_salary 5> FROM employee 6> GO Variance_salary ------------------------       671718.02469135658 (1 rows affected) 1> 2> 3> drop table employee; 4> GO```
 14.13.VARP 14.13.1. Using Statistical Aggregate Functions:VARP